REV. A
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reliable. However, no responsibility is assumed by Analog Devices for its
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may result from its use. No license is granted by implication or otherwise
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a
OP420
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 www.analog.com
Fax: 781/326-8703 © Analog Devices, Inc., 2002
Quad Micropower
Operational Amplifier
PIN CONNECTIONS
GENERAL DESCRIPTION
The OP420 quad micropower operational amplifier is a single-
chip quad patterned after the OP20 precision micropower single
operational amplifier. A Darlington PNP input stage allows the
input common-mode voltage to include V–. The wide input
range combined with low power supply drain (~40 µA/section at
5 V) provides a unique solution for designs requiring high func-
tional density and portable operation. Applications include
2-wire transmitters for process control loops, battery-operated
remote-line filters, signal preconditioning amplifiers, and a
variety of multiple-gain block arrays.
–IN
–IN
Q1
Q3 Q4
C1
Q5 Q6
Q2
Q7
Q9
Q11
Q10
Q13
Q8
Q12
Q33
Q26
Q27
Q29
V–
OUTPUT
V+
Q28
Figure 1. Simplified Schematic (1/4 Shown)
FEATURES
Low Supply Current: 200 ␮A Max @ VS = 5 V
Single-Supply Operation: 5 V to 30 V
Dual-Supply Operation: 2.5 V to 15 V
Low Input Offset Voltage: 500 ␮V Typ
Low Input Offset Voltage Drift: 5 ␮V/ⴗC Typ
High Common-Mode Input Range: V– to (V+ – 1.5 V)
High CMRR: 100 dB Typ
High Open-Loop Gain: 1100 V/mV Typ
LM 148 Pinout
OUT A
–IN A
+IN A
V+
+IN B
–IN B
OUT B
N.C.
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
N.C.
16
15
14
13
12
11
10
98
7
6
5
4
3
2
1
+
+
+
+
16-Pin SOL
(S-Suffix)
9 10 11 12 13
+IN1
NC
V+
NC
+IN2
+IN4
NC
V–
NC
+IN3
–IN1
OUT1
NC
OUT4
–IN4
–IN2
OUT2
NC
OUT3
–IN3
3 2 1 20 19
4
5
6
7
8
18
17
16
15
14
OP420CRC/883
20-Lead LCC
(RC-Suffix)
OUT 1
–IN 1
+IN 1
V+
+IN 2
–IN 2
OUT 2
OUT 4
–IN 4
+IN 4
V–
+IN 3
–IN 3
OUT 3
14
13
12
11
10
9
8
1
3
2
4
5
6
7
+
+
+
+
14-Pin Hermetic DIP
(Y-Suffix)
14-Pin Epoxy DIP
(P-Suffix)
REV. A
–2–
OP420–SPECIFICATIONS
(VS = ⴞ15 V, TA = 25ⴗC, unless otherwise noted.)
ELECTRICAL CHARACTERISTICS
OP420C
OP420G
Parameter Symbol Conditions Min Typ Max Unit
INPUT OFFSET VOLTAGE V
OS
V
S
= ±2.5 V to ±15 V 1 4 mV
INPUT OFFSET
CURRENT*I
OS
V
S
= ±2.5 V to ±15 V 0.8 2.5 nA
INPUT BIAS CURRENT*I
B
V
S
= ±2.5 V to ±15 V 12 30 nA
INPUT NOISE VOLTAGE
DENSITY e
n
f
O
= 10 Hz 50 nV/√Hz
f
O
= 100 Hz 50 nV/√Hz
INPUT NOISE CURRENT
DENSITY i
n
f
O
= 10 Hz 0.12 pA/√Hz
f
O
= 100 Hz 0.12 pA/√Hz
INPUT VOLTAGE RANGE IVR V+ = 5 V, V– = 0 V 0/3.5 V
V
S
= ±15 V –15/13.5 V
COMMON-MODE CMRR V+ = 5 V, V– = 0 V
REJECTION RATIO 0 V ≤ V
CM
≤ 3.5 V 80 96 dB
V
S
= ±15 V
–15 V ≤ V
CM
≤ 13.5 V 80 96 dB
POWER SUPPLY PSRR V
S
= ±2.5 V to ± 15 V,
REJECTION RATIO V– = 0 V, V+ = 5 V to 30 V 20 50 µV/V
LARGE SIGNAL VOLTAGE
GAIN A
VO
R
L
= 25 kΩ,
V
O
= ±10 V 400 900 V/mV
SLEW RATE SR 0.05 V/µs
CLOSED-LOOP
BANDWIDTH BW A
VCL
= 1.0 150 kHz
R
L
= 10 kΩ150 kHz
OUTPUT VOLTAGE
SWING V
O
V+ = 5 V, V– = 0 V,
R
L
= 10 kΩ0.8/4.0 V
V
S
= ±15 V
R
L
= 25 kΩ±14.0 V
SUPPLY CURRENT I
SY
V
S
= ±2.5 V, No Load — 170 300 µA
(Four Amplifiers) V
S
= ±15 V, No Load 360 460 µA
NOTE
*I
OS
and I
B
are measured at V
CM
= 0°.
Specifications subject to change without notice.
REV. A –3–
OP420
ELECTRICAL CHARACTERISTICS
(VS = ⴞ15 V, –55ⴗC ⱕ +125ⴗC for OP420C, –40ⴗC ⱕ TA ⱕ +85ⴗC for OP420G, unless
otherwise noted.)
OP420C/OP420G
Parameter Symbol Conditions Min Typ Max Unit
AVERAGE INPUT OFFSET
Voltage Drift
1
TCV
OS
Unnulled 8 15 µV°C
INPUT OFFSET
VOLTAGE V
OS
V
S
= ±2.5 V to ±15 V 5.5 mV
INPUT OFFSET
CURRENT
2
I
OS
V
S
= ±2.5 V to ±15 V 4 nA
INPUT BIAS CURRENT
2
I
B
V
S
= ±2.5 V to ±15 V 40 nA
INPUT VOLTAGE RANGE IVR V+ = 5 V, V– = 0 V 0/3.2 V
V
S
= ±15 V –15/13.2 V
COMMON-MODE CMRR V+ = 5 V, V– = 0 V,
Rejection Ratio 0 V ≤ V
CM
≤ 3.2 V 73 92 dB
V
S
= ±15 V
–15 V ≤ V
CM
≤ 13.2 V 73 92 dB
POWER SUPPLY PSRR V
S
= ±2.5 V to ±15 V,
Rejection Ratio V– = 0 V, V+ = 5 V to 30 V 25 80 µV/V
LARGE-SIGNAL
VOLTAGE GAIN A
VO
V
S
= ±15 V, R
L
= 50 kΩ,
V
O
= 10 V 200 650 V/mV
OUTPUT VOLTAGE
SWING V
O
V+ = 5 V, V– = 0 V,
R
L
= 20 kΩ1.0/3.8 V
V
S
= ±15 V,
R
L
= 50 kΩ±13.8 V
SUPPLY CURRENT I
SY
V
S
= ±2.5 V, No Load 210 400 µA
(Four Amplifiers) V
S
= ±15 V, No Load 420 640 µA
NOTES
1
Sample tested.
2
I
OS
and I
B
are measured at V
CM
= 0°.
REV. A
OP420
–4–
ORDERING GUIDE
Package Options
T
A
= 25°C V
OS
Max (mV) Cer DIP 14-Pin LCC 20-Contact Plastic Operating Temperature Range
4.0 OP420CY*OP420CRC/883 MIL
4.0 OP420GP*XIND
4.0 OP420GS*XIND
*Not for new design; obsolete April 2002.
ABSOLUTE MAXIMUM RATINGS
1
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±18 V
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . ±30 V
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . Supply Voltage
Output Short-Circuit Duration . . . . . . . . . . . . . . Continuous
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (One Amplifier Only)
Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C
Lead Temperature Range (Soldering, 60 sec) . . . . . . . 300°C
Operating Temperature Range
OP420CY, OP420CRC . . . . . . . . . . . . . . –55°C to +125°C
OP420G . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to +85°C
Junction Temperature (T
J
) . . . . . . . . . . . . . –65°C to +150°C
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although
the OP420 features proprietary ESD protection circuitry, permanent damage may occur on devices
subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are
recommended to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE
Package Type ␪
JA2
␪
JC
Unit
14-Pin Hermetic DIP (Y) 99 12 °C/W
14-Pin Plastic DIP (P) 76 33 °C/W
16-Pin SOL (S) 92 27 °C/W
NOTES
1
Absolute Maximum Ratings apply to packaged parts, unless otherwise noted.
2
␪
JA
is specified for worst-case mounting conditions, i.e., ␪
JA
is specified for
device in socket for CerDIP and P-DIP packages; ␪
JA
is specified for device
soldered to printed circuit board for SOL package.
REV. A –5–
Typical Performance Characteristics–OP420
150k
15k
1.5k150
15
1.5
0.15
80
100
GAIN – dB
VS = ⴞ15V
RL = 25k⍀
TA = 25ⴗC
AVCL = 10
AVCL = 1
FREQUENCY – Hz
120
60
40
20
0
-20
AVCL = 100
AVCL = 1000
TPC 1. Closed-Loop Gain vs. Frequency
LOAD RESISTANCE – ⍀
PEAK OUTPUT VOLTAGE – V
17
15
0
1k 10k
100k
10
5
VS = ⴞ15V
TA = 25ⴗC
VS = -5V
TPC 4. Maximum Output Voltage
vs. Load Resistance
10
0%
100
90
20mV
2␮s
50mV
TPC 7. Small-Signal Transient
Response
TEMPERATURE – ⴗC
INPUT OFFSET CURRENT – nA
700
-100
150
-50 0 50 100
VS = ⴞ15V
600
500
400
300
200
100
0
TPC 2. Input Offset Current vs.
Temperature
FREQUENCY – Hz
INPUT VOLTAGE NOISE DENISITY – nV/冪Hz
1000
100
10
0.1 1
100010 100
TPC 5. Input Voltage Noise Density
(e
n
) vs. Frequency
10
0%
100
90
5V
2V
200␮s
TPC 8. Large-Signal Transient
Response
TEMPERATURE – ⴗC
INPUT BIAS CURRENT – nA
14
-100
150
-50 0 50 100
12
10
8
6
4
2
0
VS = ⴞ15V
TPC 3. Input Bias Current vs.
Temperature
FREQUENCY – Hz
INPUT CURRENT NOISE DENSITY – pA/
冪
Hz
10
1.0
.01
0.1 1.0 1000
10 100
0.1
TPC 6. Input Current Noise Density
(i
n
) vs. Frequency
REV. A
OP420
–6–
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
14-PIN HERMETIC DIP
14-PIN EPOXY DIP
14
17
8
0.310 (7.87)
0.220 (5.59)
PIN 1
0.098 (2.49) MAX
0.005 (0.13) MIN
0.100 (2.54) BSC 0.320 (8.13)
0.290 (7.37)
0.015 (0.38)
0.008 (0.20)
0.765 (19.94) MAX
SEATING
PLANE
0.023 (0.58)
0.014 (0.36)
0.060 (1.52)
0.015 (0.38)
0.200 (5.08)
MAX
0.200 (5.08)
0.125 (3.18)
0.070 (1.78)
0.030 (0.76)
0.150
(3.81)
MIN
16-PIN SOL
16 9
8
1
0.1574 (4.00)
0.1497 (3.80)
0.3937 (10.00)
0.3859 (9.80)
0.050 (1.27)
BSC
PIN 1
0.2440 (6.20)
0.2284 (5.80)
SEATING
PLANE
0.0098 (0.25)
0.0040 (0.10)
0.0192 (0.49)
0.0138 (0.35)
0.0688 (1.75)
0.0532 (1.35)
8ⴗ
0ⴗ
0.0196 (0.50)
0.0099 (0.25)ⴛ 45ⴗ
0.0500 (1.27)
0.0160 (0.41)
0.0099 (0.25)
0.0075 (0.19)
OP420CRC/883 20-LEAD LCC
TOP
VIEW
0.358 (9.09)
0.342 (8.69)
SQ
1
20 4
9
8
13
19
14
3
18
BOTTOM
VIEW
0.028 (0.71)
0.022 (0.56)
45 TYP
0.015 (0.38)
MIN
0.055 (1.40)
0.045 (1.14)
0.050 (1.27)
BSC
0.075 (1.91)
REF
0.011 (0.28)
0.007 (0.18)
R TYP
0.095 (2.41)
0.075 (1.90)
0.100 (2.54) BSC
0.200 (5.08)
BSC
0.150 (3.81)
BSC
0.075
(1.91)
REF
0.358
(9.09)
MAX
SQ
0.100 (2.54)
0.064 (1.63)
0.088 (2.24)
0.054 (1.37)
INPUT
OP420
R
L
25k⍀
C
L
100k⍀
OUTPUT
Figure 2. Small-Signal Transient Response
INPUT
OP420
RL
25k⍀
CL
100pF
OUTPUT
10k⍀
40k⍀
Figure 3. Large-Signal Transient Response
REV. A
OP420
–7–
Revision History
Location Page
11/01—Data Sheet changed from REV. 0 to REV. A.
Edits to GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Edits to ELECTRICAL CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2, 3
Edits to ORDERING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Edits to ABSOLUTE MAXIMUM RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Deleted DICE CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Deleted WAFER TEST LIMITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
–8–
C00303–0–1/02(A)
PRINTED IN U.S.A.