LT6013/LT6014
1
60134fb
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Single/Dual 145µA,
9.5nV/√Hz, A
V
≥5, Rail-to-Rail
Output Precision Op Amps
APPLICATIO S
U
FEATURES
TYPICAL APPLICATIO
U
DESCRIPTIO
U
■
Thermocouple Amplifiers
■
Precision Photodiode Amplifiers
■
Instrumentation Amplifiers
■
Battery-Powered Precision Systems
■
Low-Voltage Precision Systems
■
Micro-Power Sensor Interface
■
35µV Maximum Offset Voltage (LT6013A)
■
Low 1/f Noise: 200nV
P-P
(0.1Hz to 10Hz)
40nV
RMS
(0.1Hz to 10Hz)
■
Low White Noise: 9.5nV/√Hz (1kHz)
■
Rail-to-Rail Output Swing
■
145µA Supply Current per Amplifier
■
250pA Maximum Input Bias Current (LT6013A)
■
A
V
≥5 Stable; Up to 500pF C
LOAD
■
0.2V/µs Slew Rate
■
1.4MHz Gain Bandwidth Product
■
120dB Minimum Voltage Gain, V
S
= ±15V
■
0.8µV/°C Maximum V
OS
Drift
■
2.7V to ±18V Supply Voltage Operation
■
Operating Temperature Range: –40°C to 85°C
■
Available in SO-8 and Space Saving 3mm × 3mm
DFN Packages
The LT
®
6013 and LT6014 op amps combine low noise and
high precision input performance with low power con-
sumption and rail-to-rail output swing. The amplifiers are
stable in a gain of 5 or more and feature greatly improved
CMRR and PSRR versus frequency compared to other
precision op amps.
Input offset voltage is factory-trimmed to less than 35µV.
The low drift and excellent long-term stability ensure a
high accuracy over temperature and time. The 250pA
maximum input bias current and 120dB minimum voltage
gain further maintain this precision over operating
conditions.
The LT6013 and LT6014 operate from any supply voltage
from 2.7V to 36V and draw only 145µA of supply current
per amplifier on a 5V supply. The output swings to within
40mV of either supply rail, making the amplifiers very
useful for low voltage single supply operation.
The amplifiers are fully specified at 5V and ±15V supplies
and from –40°C to 85°C. The single LT6013 and dual
LT6014 are both available in SO-8 and space saving
3mm × 3mm DFN packages. For unity gain stable ver-
sions, refer to the LT6010 and LT6011 data sheets.
Gain of 10 Single Ended to Differential Converter
–
+
1/2 LT6014
V+
V–
8.06k2k
VIN
5 • VIN
60134 TA01a
+
–
1/2 LT6014
10k
2k
–5 • VIN
LT6013/LT6014 0.1Hz to 10Hz Voltage Noise
TIME (SEC)
0
INPUT VOLTAGE NOISE (0.1µV/DIV)
8
60134 TA01b
246 107135 9
VS = 5V, 0V
TA = 25°C
EQUIVALENT RMS VOLTAGE = 40nVRMS
LT6013/LT6014
2
60134fb
1
2
3
4
8
7
6
5
TOP VIEW
*DNC
V
+
OUT
NC
*DNC
–IN
+IN
V
–
S8 PACKAGE
8-LEAD PLASTIC SO
–
+
TOP VIEW
DD PACKAGE
8-LEAD (3mm × 3mm) PLASTIC DFN
5
6
7
8
4
3
2
1*DNC
–IN
+IN
V
–
*DNC
V
+
OUT
NC
–
+
Total Supply Voltage (V
+
to V
–
) .............................. 40V
Differential Input Voltage (Note 2) .......................... 10V
Input Voltage .................................................... V
+
to V
–
Input Current (Note 2) ....................................... ±10mA
Output Short-Circuit Duration (Note 3) ........... Indefinite
Operating Temperature Range (Note 4) .. – 40°C to 85°C
Specified Temperature Range (Note 5) ... – 40°C to 85°C
ORDER PART
NUMBER
DD PART MARKING*
T
JMAX
= 125°C, θ
JA
= 160°C/W
UNDERSIDE METAL CONNECTED TO V
–
(PCB CONNECTION OPTIONAL)
LT6013CDD
LT6013IDD
LT6013ACDD
LT6013AIDD
(Note 1)
ABSOLUTE AXI U RATI GS
WWWU
PACKAGE/ORDER I FOR ATIO
UU
W
ORDER PART
NUMBER
S8 PART MARKING
LT6013CS8
LT6013IS8
LT6013ACS8
LT6013AIS8
6013
6013I
6013A
6013AI
T
JMAX
= 150°C, θ
JA
= 190°C/W
Maximum Junction Temperature
DD Package ..................................................... 125°C
S8 Package...................................................... 150°C
Storage Temperature Range
DD Package ..................................... – 65°C to 125°C
S8 Package...................................... – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
LBHC
ORDER PART
NUMBER
DD PART MARKING*
T
JMAX
= 125°C, θ
JA
= 160°C/W
UNDERSIDE METAL CONNECTED TO V
–
(PCB CONNECTION OPTIONAL)
LT6014CDD
LT6014IDD
LT6014ACDD
LT6014AIDD
TOP VIEW
DD PACKAGE
8-LEAD (3mm × 3mm) PLASTIC DFN
5
6
7
8
4
3
2
1OUT A
–IN A
+IN A
V
–
V
+
OUT B
–IN B
+IN B
B
A
ORDER PART
NUMBER
S8 PART MARKING
LT6014CS8
LT6014IS8
LT6014ACS8
LT6014AIS8
6014
6014I
6014A
6014AI
T
JMAX
= 150°C, θ
JA
= 190°C/W
1
2
3
4
8
7
6
5
TOP VIEW
V+
OUT B
–IN B
+IN B
OUT A
–IN A
+IN A
V–
S8 PACKAGE
8-LEAD PLASTIC SO
B
A
LBCB
*Temperature and electrical grades are identified by a label on the shipping container.
Consult LTC Marketing for parts specified with wider operating temperature ranges.
*Do Not Connect *Do Not Connect
LT6013/LT6014
3
60134fb
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = 5V, 0V; VCM = 2.5V; RL to 0V; unless otherwise specified. (Note 5)
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OS
Input Offset Voltage (Note 8) LT6013AS8 10 35 µV
T
A
= 0°C to 70°C●60 µV
T
A
= –40°C to 85°C●75 µV
LT6013S8, LT6014AS8 20 60 µV
T
A
= 0°C to 70°C●85 µV
T
A
= –40°C to 85°C●110 µV
LT6013ADD 20 60 µV
T
A
= 0°C to 70°C●110 µV
T
A
= –40°C to 85°C●150 µV
LT6014S8 20 75 µV
T
A
= 0°C to 70°C●100 µV
T
A
= –40°C to 85°C●125 µV
LT6013DD, LT6014ADD 30 85 µV
T
A
= 0°C to 70°C●135 µV
T
A
= –40°C to 85°C●170 µV
LT6014DD 30 125 µV
T
A
= 0°C to 70°C●175 µV
T
A
= –40°C to 85°C●210 µV
∆V
OS
/∆T Input Offset Voltage Drift (Note 6) S8 Packages ●0.2 0.8 µV/°C
DD Packages ●0.2 1.4 µV/°C
I
OS
Input Offset Current (Note 8) LT6013AS8, LT6013ADD 100 250 pA
T
A
= 0°C to 70°C●500 pA
T
A
= –40°C to 85°C●600 pA
LT6014AS8, LT6014ADD 100 500 pA
T
A
= 0°C to 70°C●600 pA
T
A
= –40°C to 85°C●700 pA
LT6013/LT6014 (Standard grades) 150 800 pA
T
A
= 0°C to 70°C●1000 pA
T
A
= –40°C to 85°C●1200 pA
I
B
Input Bias Current (Note 8) LT6013AS8, LT6013ADD 100 ±250 pA
T
A
= 0°C to 70°C●±500 pA
T
A
= –40°C to 85°C●±600 pA
LT6013S8, LT6013DD, LT6014AS8, LT6014ADD 100 ±400 pA
T
A
= 0°C to 70°C●±600 pA
T
A
= –40°C to 85°C●±800 pA
LT6014S8, LT6014DD 150 ±800 pA
T
A
= 0°C to 70°C●±1000 pA
T
A
= –40°C to 85°C●±1200 pA
e
n
Input Noise Voltage Density f = 1kHz, LT6013/LT6014 9.5 nV/√Hz
f = 1kHz, LT6013A/LT6014A 9.5 13 nV/√Hz
Input Noise Voltage (Low Frequency) Bandwidth = 0.01Hz to 1Hz 200 nV
P-P
50 nV
RMS
Bandwidth = 0.1Hz to 10Hz 200 nV
P-P
40 nV
RMS
LT6013/LT6014
4
60134fb
i
n
Input Noise Current Density f = 1kHz 0.15 pA/√Hz
Input Noise Current (Low Frequency) Bandwidth = 0.01Hz to 1Hz 7 pA
P-P
1.3 pA
RMS
Bandwidth = 0.1Hz to 10Hz 5 pA
P-P
0.4 pA
RMS
R
IN
Input Resistance Common Mode, V
CM
= 1V to 3.8V 120 GΩ
Differential 20 MΩ
C
IN
Input Capacitance 4pF
V
CM
Input Voltage Range (Positive) Guaranteed by CMRR ●3.8 4 V
Input Voltage Range (Negative) Guaranteed by CMRR ●0.7 1 V
CMRR Common Mode Rejection Ratio V
CM
= 1V to 3.8V ●107 135 dB
Minimum Supply Voltage Guaranteed by PSRR ●2.4 2.7 V
PSRR Power Supply Rejection Ratio V
S
= 2.7V to 36V, V
CM
= 1/2V
S
●112 135 dB
A
VOL
Large-Signal Voltage Gain R
L
= 10k, V
OUT
= 1V to 4V ●300 2000 V/mV
R
L
= 2k, V
OUT
= 1V to 4V ●250 2000 V/mV
Channel Separation V
OUT
= 1V to 4V, LT6014 ●110 140 dB
V
OUT
Maximum Output Swing No Load, 50mV Overdrive 35 55 mV
(Positive, Referred to V
+
)●65 mV
I
SOURCE
= 1mA, 50mV Overdrive 120 170 mV
●220 mV
Maximum Output Swing No Load, 50mV Overdrive 40 55 mV
(Negative, Referred to 0V) ●65 mV
I
SINK
= 1mA, 50mV Overdrive 150 225 mV
●275 mV
I
SC
Output Short-Circuit Current (Note 3) V
OUT
= 0V, 1V Overdrive, Source 8 14 mA
●4mA
V
OUT
= 5V, –1V Overdrive, Sink 8 21 mA
●4mA
SR Slew Rate A
V
= –10, R
F
= 50k, R
G
= 5k 0.15 0.2 V/µs
T
A
= 0°C to 70°C●0.12 V/µs
T
A
= –40°C to 85°C●0.1 V/µs
GBW Gain Bandwidth Product f = 10kHz 1 1.4 MHz
●0.9 MHz
t
s
Settling Time A
V
= –4, 0.01%, V
OUT
= 1.5V to 3.5V 20 µs
t
r
, t
f
Rise Time, Fall Time A
V
= 5, 10% to 90%, 0.1V Step 1 µs
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = 5V, 0V; VCM = 2.5V; RL to 0V; unless otherwise specified. (Note 5)
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
LT6013/LT6014
5
60134fb
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OS
Input Offset Voltage (Note 8) LT6013AS8 20 60 µV
T
A
= 0°C to 70°C●80 µV
T
A
= –40°C to 85°C●110 µV
LT6013S8 25 85 µV
T
A
= 0°C to 70°C●110 µV
T
A
= –40°C to 85°C●135 µV
LT6013ADD 25 85 µV
T
A
= 0°C to 70°C●135 µV
T
A
= –40°C to 85°C●170 µV
LT6013DD, LT6014AS8 30 135 µV
T
A
= 0°C to 70°C●160 µV
T
A
= –40°C to 85°C●185 µV
LT6014S8 35 150 µV
T
A
= 0°C to 70°C●175 µV
T
A
= –40°C to 85°C●200 µV
LT6014ADD 35 160 µV
T
A
= 0°C to 70°C●210 µV
T
A
= –40°C to 85°C●225 µV
LT6014DD 40 200 µV
T
A
= 0°C to 70°C●250 µV
T
A
= –40°C to 85°C●275 µV
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = 5V, 0V; VCM = 2.5V; RL to 0V; unless otherwise specified. (Note 5)
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
∆V
OS
Offset Voltage Match (Note 7) LT6014AS8 50 120 µV
T
A
= 0°C to 70°C●170 µV
T
A
= –40°C to 85°C●220 µV
LT6014ADD 50 170 µV
T
A
= 0°C to 70°C●270 µV
T
A
= –40°C to 85°C●340 µV
LT6014S8 50 150 µV
T
A
= 0°C to 70°C●200 µV
T
A
= –40°C to 85°C●250 µV
LT6014DD 60 250 µV
T
A
= 0°C to 70°C●350 µV
T
A
= –40°C to 85°C●420 µV
∆I
B
Input Bias Current Match (Note 7) LT6014AS8, LT6014ADD 200 800 pA
T
A
= 0°C to 70°C●1200 pA
T
A
= –40°C to 85°C●1400 pA
LT6014S8, LT6014DD 300 1600 pA
T
A
= 0°C to 70°C●2000 pA
T
A
= –40°C to 85°C●2400 pA
∆CMRR Common Mode Rejection Ratio LT6014 ●101 135 dB
Match (Note 7)
∆PSRR Power Supply Rejection Ratio LT6014 ●106 135 dB
Match (Note 7)
I
S
Supply Current per Amplifier 145 165 µA
T
A
= 0°C to 70°C●210 µA
T
A
= –40°C to 85°C●230 µA
The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.
VS = ±15V, VCM = 0V, RL to 0V, unless otherwise specified. (Note 5)
LT6013/LT6014
6
60134fb
∆V
OS
/∆T Input Offset Voltage Drift (Note 6) S8 Packages ●0.2 0.8 µV/°C
DD Packages ●0.2 1.2 µV/°C
I
OS
Input Offset Current (Note 8) LT6013AS8, LT6013ADD 100 250 pA
T
A
= 0°C to 70°C●500 pA
T
A
= –40°C to 85°C●600 pA
LT6014AS8, LT6014ADD 100 500 pA
T
A
= 0°C to 70°C●600 pA
T
A
= –40°C to 85°C●700 pA
LT6013/LT6014 (Standard grades) 150 800 pA
T
A
= 0°C to 70°C●1000 pA
T
A
= –40°C to 85°C●1200 pA
I
B
Input Bias Current (Note 8) LT6013AS8, LT6013ADD 100 ±250 pA
T
A
= 0°C to 70°C●±500 pA
T
A
= –40°C to 85°C●±600 pA
LT6013S8, LT6013DD, LT6014AS8, LT6014ADD 100 ±400 pA
T
A
= 0°C to 70°C●±600 pA
T
A
= –40°C to 85°C●±800 pA
LT6014S8, LT6014DD 150 ±800 pA
T
A
= 0°C to 70°C●±1000 pA
T
A
= –40°C to 85°C●±1200 pA
e
n
Input Noise Voltage Density f = 1kHz, LT6013/LT6014 9.5 nV/√Hz
f = 1kHz, LT6013A/LT6014A 9.5 13 nV/√Hz
Input Noise Voltage (Low Frequency) Bandwidth = 0.01Hz to 1Hz 200 nV
P-P
50 nV
RMS
Bandwidth = 0.1Hz to 10Hz 200 nV
P-P
40 nV
RMS
i
n
Input Noise Current Density f = 1kHz 0.15 pA/√Hz
Input Noise Current (Low Frequency) Bandwidth = 0.01Hz to 1Hz 7 pA
P-P
1.3 pA
RMS
Bandwidth = 0.1Hz to 10Hz 5 pA
P-P
0.4 pA
RMS
R
IN
Input Resistance Common Mode, V
CM
= ±13.5V 400 GΩ
Differential 20 MΩ
C
IN
Input Capacitance 4pF
V
CM
Input Voltage Range Guaranteed by CMRR ●±13.5 ±14 V
CMRR Common Mode Rejection Ratio V
CM
= –13.5V to 13.5V 115 135 dB
●112 135 dB
Minimum Supply Voltage Guaranteed by PSRR ●±1.2 ±1.35 V
PSRR Power Supply Rejection Ratio V
S
= ±1.35V to ±18V ●112 135 dB
A
VOL
Large-Signal Voltage Gain R
L
= 10k, V
OUT
= –13.5V to 13.5V 1000 2000 V/mV
●600 V/mV
R
L
= 5k, V
OUT
= –13.5V to 13.5V 500 1500 V/mV
●300 V/mV
Channel Separation V
OUT
= –13.5V to 13.5V, LT6014 ●120 140 dB
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = ±15V, VCM = 0V, RL to 0V, unless otherwise specified. (Note 5)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
LT6013/LT6014
7
60134fb
V
OUT
Maximum Output Swing No Load, 50mV Overdrive 45 80 mV
(Positive, Referred to V
+
)●100 mV
I
SOURCE
= 1mA, 50mV Overdrive 140 195 mV
●240 mV
Maximum Output Swing No Load, 50mV Overdrive 45 80 mV
(Negative, Referred to V
–
)●100 mV
I
SINK
= 1mA, 50mV Overdrive 150 250 mV
●300 mV
I
SC
Output Short-Circuit Current V
OUT
= 0V, 1V Overdrive (Source) 8 15 mA
(Note 3) ●5mA
V
OUT
= 0V, –1V Overdrive (Sink) 8 20 mA
●5mA
SR Slew Rate A
V
= –10, R
F
= 50k, R
G
= 5k 0.15 0.2 V/µs
T
A
= 0°C to 70°C●0.12 V/µs
T
A
= –40°C to 85°C●0.1 V/µs
GBW Gain Bandwidth Product f = 10kHz 1.1 1.6 MHz
●1 MHz
t
s
Settling Time A
V
= –4, 0.01%, V
OUT
= 0V to 10V 40 µs
t
r
, t
f
Rise Time, Fall Time A
V
= 5, 10% to 90%, 0.1V Step 0.9 µs
∆V
OS
Offset Voltage Match (Note 7) LT6014AS8 50 270 µV
T
A
= 0°C to 70°C●320 µV
T
A
= –40°C to 85°C●370 µV
LT6014ADD 50 320 µV
T
A
= 0°C to 70°C●420 µV
T
A
= –40°C to 85°C●450 µV
LT6014S8 70 300 µV
T
A
= 0°C to 70°C●350 µV
T
A
= –40°C to 85°C●400 µV
LT6014DD 80 400 µV
T
A
= 0°C to 70°C●500 µV
T
A
= –40°C to 85°C●550 µV
∆I
B
Input Bias Current Match (Note 7) LT6014AS8, LT6014ADD 200 800 pA
T
A
= 0°C to 70°C●1200 pA
T
A
= –40°C to 85°C●1400 pA
LT6014S8, LT6014DD 300 1600 pA
T
A
= 0°C to 70°C●2000 pA
T
A
= –40°C to 85°C●2400 pA
∆CMRR Common Mode Rejection Ratio LT6014 ●109 135 dB
Match (Note 7)
∆PSRR Power Supply Rejection Ratio LT6014 ●106 135 dB
Match (Note 7)
I
S
Supply Current per Amplifier 200 250 µA
T
A
= 0°C to 70°C●290 µA
T
A
= –40°C to 85°C●310 µA
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = ±15V, VCM = 0V, RL to 0V, unless otherwise specified. (Note 5)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
LT6013/LT6014
8
60134fb
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Distribution of Input Offset Voltage
Input Offset Voltage
vs Temperature
Offset Voltage
vs Input Common Mode Voltage
Input Bias Current vs Temperature
Input Bias Current
vs Input Common Mode Voltage
–25
INPUT OFFSET VOLTAGE (µV)
0
PERCENT OF UNITS (%)
5
15
20
25
60134 G01
10
30 V
S
= 5V, 0V
T
A
= 25°C
LT6013AS8
–45 –35 –15 –5 5 15 25 35 45
TEMPERATURE (°C)
–50
–125
OFFSET VOLTAGE (µV)
–100
–50
–25
0
125
50
050 75
60134 G02
–75
75
100
25
–25 25 100 125
VS = 5V, 0V
REPRESENTATIVE UNITS
INPUT COMMON MODE VOLTAGE (V)
1000
900
800
600
400
200
700
500
300
100
0
60134 G03
CHANGE IN OFFSET VOLTAGE (µV)
V
S
= 5V, 0V
T
A
= 85°C
T
A
= –40°C
T
A
= 25°C
00.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 5.04.5
TEMPERATURE (°C)
–50
–800
INPUT BIAS CURRENT (pA)
–600
–200
0
50
800
60134 G05
–400
0
–25 75 100
25 125
200
400
600
V
S
= 5V, 0V
TYPICAL PART
INPUT COMMON MODE VOLTAGE (V)
0
–400
–300
–200
CHANGE IN INPUT BIAS CURRENT (pA)
–100
0
100
200
400
300
0.5 1.0 1.5 2.0
60134 G06
2.5 3.0 3.5 4.0 4.5
V
S
= 5V, 0V
T
A
= 85°C
T
A
= 25°C
T
A
= –40°C
INPUT BIAS CURRENT (pA)
–175
0
PERCENT OF UNITS (%)
5
15
30
35
20
25
–75 25–25
60134 G04
10
–125 75 125 175
LT6013AS8
Distribution of Input Bias Current
ELECTRICAL CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those beyond which the life of the
device may be impaired.
Note 2: The inputs are protected by back-to-back diodes and internal
series resistors. If the differential input voltage exceeds 10V, the input
current must be limited to less than 10mA.
Note 3: A heat sink may be required to keep the junction temperature
below absolute maximum ratings.
Note 4: The LT6013C/LT6014C and LT6013I/LT6014I are guaranteed
functional over the operating temperature range of – 40°C to 85°C.
Note 5: The LT6013C and LT6014C are guaranteed to meet the specified
performance from 0°C to 70°C and are designed, characterized and
expected to meet specified performance from –40°C to 85°C but is not
tested or QA sampled at these temperatures. The LT6013I and LT6014I are
guaranteed to meet specified performance from –40°C to 85°C.
Note 6: This parameter is not 100% tested.
Note 7: Matching parameters are the difference between the two
amplifiers. ∆CMRR and ∆PSRR are defined as follows: (1) CMRR and
PSRR are measured in µV/V for the individual amplifiers. (2) The
difference between matching amplifiers is calculated in µV/V. (3) The
result is converted to dB.
Note 8: The specifications for V
OS
, I
B
, and I
OS
depend on the grade and on
the package. The following table clarifies the notations.
STANDARD GRADE A GRADE
S8 Package LT6013S8, LT6014S8 LT6013AS8, LT6014AS8
DFN Package LT6013DD, LT6014DD LT6013ADD, LT6014ADD
LT6013/LT6014
9
60134fb
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Output Voltage Swing
vs Temperature
Output Saturation Voltage
vs Load Current (Output High)
Output Saturation Voltage
vs Load Current (Output Low)
TEMPERATURE (°C)
–50
OUTPUT VOLTAGE SWING (mV)
–20
25
60134 G11
40
–25 0 50
20
V
–
V
+
–40
–60
60
75 100 125
V
S
= 5V, 0V
NO LOAD
OUTPUT HIGH
OUTPUT LOW
LOAD CURRENT (mA)
0.01
0.01
OUTPUT HIGH SATURATION VOLTAGE (V)
0.1
1
0.1 1 10
60134 G12
TA = 85°C
TA = 25°C
VS = 5V, 0V
TA = –40°C
LOAD CURRENT (mA)
0.01
0.01
OUTPUT LOW SATURATION VOLTAGE (V)
0.1
1
0.1 1 10
60134 G13
T
A
= 85°C
T
A
= 25°C
V
S
= 5V, 0V
T
A
= –40°C
0.01Hz to 1Hz Voltage Noise
TIME (SEC)
0
INPUT VOLTAGE NOISE (0.1µV/DIV)
80
60134 G10
20 40 60 1007010 30 50 90
VS = 5V, 0V
TA = 25°C
0.1Hz to 10Hz Voltage Noise
TIME (SEC)
08
60134 G09
246 107135 9
TIME (SEC)
INPUT VOLTAGE NOISE (0.1µV/DIV)
VS = 5V, 0V
TA = 25°C
0.01Hz to 1Hz Current Noise
TIME (SEC)
080
60134 G32
20 40 60 1007010 30 50 90
INPUT CURRENT NOISE (2pA/DIV)
V
S
= 5V, 0V
T
A
= 25°C
BALANCED SOURCE RESISTANCE
0.1Hz to 10Hz Current Noise
TIME (SEC)
08
60134 G31
246 107135 9
TIME (SEC)
INPUT CURRENT NOISE (2pA/DIV)
V
S
= 5V, 0V
T
A
= 25°C
BALANCED SOURCE RESISTANCE
en, in vs Frequency
Total Input Noise
vs Source Resistance
FREQUENCY (Hz)
1
1
INPUT VOLTAGE NOISE DENSITY (nV/√Hz)
INPUT CURRENT NOISE DENSITY (fA/√Hz)
10 100
1000
10 100 1000
60134 G07
CURRENT NOISE
UNBALANCED
SOURCE RESISTORS
VOLTAGE NOISE
1/f CORNER = 40Hz
1/f CORNER = 2Hz
V
S
= 5V, 0V
T
A
= 25°C
SOURCE RESISTANCE (Ω)
100 1k 10k 100k 1M 10M
0.0001
TOTAL INPUT NOISE (µV/√Hz)
0.01
10
100M
60134 G08
0.001
0.1
1
TOTAL NOISE
RESISTOR NOISE ONLY
VS = 5V, 0V
TA = 25°C
f = 1kHz
UNBALANCED
SOURCE RESISTORS
LT6013/LT6014
10
60134fb
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Channel Separation vs Frequency
CMRR vs Frequency
FREQUENCY (Hz)
110
40
CHANNEL SEPARATION (dB)
60
80
100
120
100 1k 10k 100k 1M
60134 G20
20
0
140
160 LT6014
VS = 5V, 0V
TA = 25°C
FREQUENCY (Hz)
110
40
COMMON MODE REJECTION RATIO (dB)
60
80
100
120
100 1k 10k 100k 1M
60134 G21
20
0
140
160 T
A
= 25°C
PSRR vs Frequency, Single Supply
FREQUENCY (Hz)
0.1
0
POWER SUPPLY REJECTION RATIO (dB)
80
100
120
140
1 10 100 1k 10k 100k 1M
60134 G19
60
40
20
VS = 5V, 0V
TA = 25°C
THD + Noise vs Frequency
THD + Noise vs Frequency Settling Time vs Output Step
FREQUENCY (Hz)
10
0.0001
THD + NOISE (%)
0.01
10
1k 10k100 100k
60134 G16
0.001
0.1
1
VS = 5V, 0V
VOUT = 2VP-P
TA = 25°C
AV = 5
FREQUENCY (Hz)
10
0.0001
THD + NOISE (%)
0.01
10
1k 10k100
60134 G17
0.001
0.1
1
VS = ±15V
VOUT = 20VP-P
TA = 25°C
AV = 5
SETTLING TIME (µs)
0
0
OUTPUT STEP (V)
2
3
4
10 20 25 30
60134 G18
1
515
VS = 5V, 0V
AV = 5
TA = 25°C
0.1%
0.01%
Supply Current vs Supply Voltage Warm-Up Drift
SUPPLY VOLTAGE (±V)
0
SUPPLY CURRENT (µA)
300
400
500
16
60134 G14
200
100
250
350
450
150
50
042 86 12 14 18
10 20
PER AMPLIFIER
T
A
= 85°C
T
A
= –40°C
T
A
= 25°C
TIME AFTER POWER-ON (SECONDS)
0
CHANGE IN OFFSET VOLTAGE (µV)
1
2
3
30 60 90 120
60134 G15
150
±15V
±2.5V
PSRR vs Frequency, Split Supplies
FREQUENCY (Hz)
0.1
0
POWER SUPPLY REJECTION RATIO (dB)
80
100
120
140
1 10 100 1k 10k 100k 1M
60134 G22
60
40
20
V
S
= ±15V
T
A
= 25°C
POSITIVE
SUPPLY
NEGATIVE
SUPPLY
LT6013/LT6014
11
60134fb
Small-Signal Transient Response Large-Signal Transient Response Rail-to-Rail Output Swing
20mV/DIV
A
V
= 5 2µs/DIV 60134 G28
1V/DIV
A
V
= –4 20µs/DIV 60134 G29
V
S
= 5V, 0V
R
L
= 2k
1V/DIV
A
V
= –4 100µs/DIV 60134 G30
V
S
= 5V, 0V
R
L
= 2k
TYPICAL PERFOR A CE CHARACTERISTICS
UW
5V
0V
5V
0V
Gain vs Frequency, AV = 5
Gain and Phase vs Frequency
Gain vs Frequency, AV = –4
FREQUENCY (Hz)
–10
OPEN-LOOP GAIN (dB)
PHASE SHIFT (DEG)
50
60
–20
–30
40
10
30
20
0
1k 100k 1M 10M
60134 G25
–40
–80
–240
–120
–160
–200
–280
10k
PHASE
GAIN
VS = 5V, 0V
TA = 25°C
RL = 10k
FREQUENCY (Hz)
1k
–2
GAIN (dB)
14
18
22
10k 100k 1M
60134 G26
10
6
2
V
S
= 5V, 0V
T
A
= 25°C
C
L
= 500pF
C
L
= 50pF
FREQUENCY (Hz)
1k
–4
GAIN (dB)
12
16
20
10k 100k 1M
60134 G27
8
4
0
V
S
= 5V, 0V
T
A
= 25°C
C
L
= 500pF
C
L
= 50pF
Output Impedance vs Frequency Open-Loop Gain vs Frequency
FREQUENCY (Hz)
1
OUTPUT IMPEDANCE (Ω)
1000
0.1
10
100
1 100 1k 10k
60134 G23
0.01
10 100k
V
S
= 5V, 0V
T
A
= 25°C
A
V
= 100
A
V
= 10
A
V
= 5
FREQUENCY (Hz)
20
120
100
80
60
40
–20
0
OPEN-LOOP GAIN (dB)
140
0.01 10 100 1k 10k 100k 1M 10M
60134 G24
–40
0.1 1
V
S
= 5V, 0V
T
A
= 25°C
R
L
= 10k
LT6013/LT6014
12
60134fb
Not Unity-Gain Stable
The
LT6013 and
LT6014 amplifiers are optimized for the
lowest possible noise and smallest package size, and are
intentionally decompensated to be stable in a gain con-
figuration of 5 or greater. Do not connect the amplifiers in
a gain less than 5 (such as unity-gain). For a unity-gain
stable amplifier with similar performance though slightly
higher noise and lower bandwidth, see the LT6010 and
LT6011/LT6012 datasheets.
Figure 1 shows simple inverting and non-inverting op amp
configurations and indicates how to achieve a gain of 5 or
greater. For more general feedback networks, determine
the gain that the op amp “sees” as follows:
1. Suppose the op amp is removed from the circuit.
2. Apply a small-signal voltage at the output node of the
op amp.
3. Find the differential voltage that would appear across
the two inputs of the op amp.
4. The ratio of the output voltage to the input voltage is
the gain that the op amp “sees”. This ratio must be
5 or greater.
Do not place a capacitor bigger than 200pF between the
output to the inverting input unless there is a 5 times larger
capacitor from that input to AC ground. Otherwise, the op
amp gain would drop to less than 5 at high frequencies,
and the stability of the loop would be compromised.
The LT6013 and LT6014 can be used in lower gain
configurations when an impedance is connected between
the op amp inputs. Figure 2 shows inverting and non-
inverting unity gain connections. The R
C
network across
the op amp inputs results in a large enough noise gain at
high frequencies, thereby ensuring stability. At low fre-
quencies, the capacitor is an open circuit so the DC
precision (offset and noise) remains very good.
APPLICATIO S I FOR ATIO
WUUU
Figure 1. Use LT6013 and LT6014 in a Gain of 5 or Greater
R
F
R
G
V
IN
V
REF
NONINVERTING:
SIGNAL GAIN = 1 + R
F
/R
G
OP AMP GAIN = 1 + R
F
/R
G
STABLE IF 1 + R
F
/R
G
≥ 5
60134 F01
–
+V
IN
UNITY-GAIN:
DO NOT USE
–
+
R
F
V
REF
INVERTING:
SIGNAL GAIN = –R
F
/R
G
OP AMP GAIN = 1 + R
F
/R
G
STABLE IF 1 + R
F
/R
G
≥ 5
V
IN –
+
R
G
Figure 2. Stabilizing Op Amp for Unity Gain Operation
V
OUT
V
IN
–
+
10k
2.5k
1nF
60134 F02
V
OUT
V
IN
+
–
10k
10k
3k
1nF
UNITY GAIN INVERTER UNITY GAIN FOLLOWER
LT6013/LT6014
13
60134fb
APPLICATIO S I FOR ATIO
WUUU
Preserving Input Precision
Preserving the input accuracy of the
LT6013 and
LT6014
requires that the applications circuit and PC board layout
do not introduce errors comparable to or greater than the
10µV typical offset of the amplifiers. Temperature differen-
tials across the input connections can generate thermo-
couple voltages of 10’s of microvolts so the connections
to the input leads should be short, close together and away
from heat dissipating components. Air currents across the
board can also generate temperature differentials.
The extremely low input bias currents allow high accuracy
to be maintained with high impedance sources and feed-
back resistors. The LT6013 and LT6014 low input bias cur-
rents are obtained by a cancellation circuit on-chip. This
causes the resulting IB+ and IB– to be uncorrelated, as
implied by the IOS specification being comparable to IB. Do
not try to balance the input resistances in each input lead;
instead keep the resistance at either input as low as pos-
sible for maximum accuracy.
Leakage currents on the PC board can be higher than the
input bias current. For example, 10GΩ of leakage between
a 15V supply lead and an input lead will generate 1.5nA!
Surround the input leads with a guard ring driven to the
same potential as the input common mode to avoid exces-
sive leakage in high impedance applications.
Input Protection
The LT6013/LT6014 features on-chip back-to-back diodes
between the input devices, along with 500Ω resistors in
series with either input. This internal protection limits the
input current to approximately 10mA (the maximum al-
lowed) for a 10V differential input voltage. Use additional
external series resistors to limit the input current to 10mA
in applications where differential inputs of more than 10V
are expected. For example, a 1k resistor in series with each
input provides protection against 30V differential voltage.
Input Common Mode Range
The LT6013/LT6014 output is able to swing close to each
power supply rail (rail-to-rail out), but the input stage is
limited to operating between V
–
+ 1V and V
+
– 1.2V. Exceed-
ing this common mode range will cause the gain to drop
to zero; however, no phase reversal will occur.
Total Input Noise
The LT6013 and LT6014 amplifiers contribute negligible
noise to the system when driven by sensors (sources) with
impedance between 10kΩ and 1MΩ. Throughout this
range, total input noise is dominated by the 4kTR
S
noise
of the source. If the source impedance is less than 10kΩ,
the input voltage noise of the amplifier starts to contribute
with a minimum noise of 9.5nV/√Hz for very low source im-
pedance. If the source impedance is more than 1MΩ, the
input current noise of the amplifier, multiplied by this high
impedance, starts to contribute and eventually dominate.
Total input noise spectral density can be calculated as:
v e kTR i R
n TOTAL n S n S() ()=+ +
22
4
where e
n
= 9.5nV/√Hz , i
n
= 0.15pA/√Hz and R
S
is the total
impedance at the input, including the source impedance.
Capacitive Loads
The LT6013 and LT6014 can drive capacitive loads up to
500pF at a gain of 5. The capacitive load driving capability
increases as the amplifier is used in higher gain configu-
rations. A small series resistance between the output and
the load further increases the amount of capacitance that
the amplifier can drive.
LT6013/LT6014
14
60134fb
SI PLIFIED SCHE ATIC
WW
60134 SS
Q22
Q16
Q3
Q7
Q8
C
B
A
B
A
Q15
V
+
V
–
Q1 Q2
D2D1
Q11
Q17
Q21
Q4
Q6
Q5
C2
Q12
D3
D4
D5
Q14 Q20
Q19
Q13
Q18
R3 R4 R6
R5
R
C1
R1
500Ω
R2
500Ω
C1
C3
+IN
–IN
OUT
Q9 Q10
(One Amplifier)
LT6013/LT6014
15
60134fb
U
PACKAGE DESCRIPTIO
DD Package
8-Lead Plastic DFN (3mm × 3mm)
(Reference LTC DWG # 05-08-1698)
3.00 ±0.10
(4 SIDES)
NOTE:
1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-1)
2. DRAWING NOT TO SCALE
3. ALL DIMENSIONS ARE IN MILLIMETERS
4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE
5. EXPOSED PAD SHALL BE SOLDER PLATED
6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION
ON TOP AND BOTTOM OF PACKAGE
0.38 ± 0.10
BOTTOM VIEW—EXPOSED PAD
1.65 ± 0.10
(2 SIDES)
0.75 ±0.05
R = 0.115
TYP
2.38 ±0.10
(2 SIDES)
14
85
PIN 1
TOP MARK
(NOTE 6)
0.200 REF
0.00 – 0.05
(DD8) DFN 1203
0.25 ± 0.05
2.38 ±0.05
(2 SIDES)
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
1.65 ±0.05
(2 SIDES)2.15 ±0.05
0.50
BSC
0.675 ±0.05
3.5 ±0.05
PACKAGE
OUTLINE
0.25 ± 0.05
0.50 BSC
S8 Package
8-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610)
.016 – .050
(0.406 – 1.270)
.010 – .020
(0.254 – 0.508)× 45°
0°– 8° TYP
.008 – .010
(0.203 – 0.254)
SO8 0303
.053 – .069
(1.346 – 1.752)
.014 – .019
(0.355 – 0.483)
TYP
.004 – .010
(0.101 – 0.254)
.050
(1.270)
BSC
1234
.150 – .157
(3.810 – 3.988)
NOTE 3
8765
.189 – .197
(4.801 – 5.004)
NOTE 3
.228 – .244
(5.791 – 6.197)
.245
MIN .160 ±.005
RECOMMENDED SOLDER PAD LAYOUT
.045 ±.005
.050 BSC
.030 ±.005
TYP
INCHES
(MILLIMETERS)
NOTE:
1. DIMENSIONS IN
2. DRAWING NOT TO SCALE
3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
LT6013/LT6014
16
60134fb
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2004
LT/LT 0305 REV B • PRINTED IN USA
PART NUMBER DESCRIPTION COMMENTS
LT1112/LT1114 Dual/Quad Low Power, Picoamp Input Precision Op Amps 250pA Input Bias Current
LT1880 Rail-to-Rail Output, Picoamp Input Precision Op Amp SOT-23
LT1881/LT1882 Dual/Quad Rail-to-Rail Output, Picoamp Input Precision Op Amps C
LOAD
Up to 1000pF
LT1884/LT1885 Dual/Quad Rail-to-Rail Output, Picoamp Input Precision Op Amps 9.5nV/√Hz Input Noise
LT6011/LT6012 Dual/Quad Low Power Rail-to-Rail Output, Precision Op Amps 14nV/√Hz, Unity-Gain Stable Version of LT6014
LT6010 Single Low Power Rail-to-Rail Output, Precision Op Amp 200pA Input Bias Current, Shutdown Feature
RELATED PARTS
U
TYPICAL APPLICATIO
Low Power Hall Sensor Amplifier
–
+
LT1782
–
+
1/2 LT6014
VS
VS+
VOUT
–
7.87k
1%
VS = 3V TO 18V
IS = ~600µA
VOUT = ~40mV/mT
1, 2
4
6
10k
OFFSET
ADJUST
1
3
2
400Ω
×4
HALL ELEMENT
ASAHI-KASEI
HW-108A (RANK D)
www.asahi-kasei.co.jp
26.7k
1%
49.9k
0.1µF
49.9k
VS
4
499Ω
499Ω
4
60134 TA02
7
1
8
6
3
2
5
100k
1%
LT1790-1.25
–
+
1/2 LT6014
1µF
Precision Micropower Photodiode Amplifier
60134 TA04
CD
170pF
VS+
VS–
R1
100k
C1
20pF
VOUT
880nm IR
PHOTODIODE
OPTO-DIODE CORP
ODD-45W
λ
IPHOTODIODE
GAIN: AZ = 100kΩ =
10% TO 90% RISE TIME: tr = 3.2µs
BANDWIDTH: BW = 110kHz
IPHOTODIODE
VOUT
VS = ±1.35V TO ±18V
C1, CD SATISFY GAIN OF 5
STABILITY REQUIREMENT AT AC
OUTPUT OFFSET = 60µV MAX FOR LT6013AS8
+
–
LT6013
