LMC6035,LMC6036
LMC6035/LMC6036 Low Power 2.7V Single Supply CMOS Operational Amplifiers
Literature Number: SNOS875E
LMC6035/LMC6036
Low Power 2.7V Single Supply CMOS Operational
Amplifiers
General Description
The LMC6035/6 is an economical, low voltage op amp ca-
pable of rail-to-rail output swing into loads of 600Ω.
LMC6035 is available in a chip sized package (8-Bump
micro SMD) using National’s micro SMD package technol-
ogy. Both allow for single supply operation and are guaran-
teed for 2.7V, 3V, 5V and 15V supply voltage. The 2.7 supply
voltage corresponds to the End-of-Life voltage (0.9V/cell) for
three NiCd or NiMH batteries in series, making the
LMC6035/6 well suited for portable and rechargeable sys-
tems. It also features a well behaved decrease in its speci-
fications at supply voltages below its guaranteed 2.7V op-
eration. This provides a “comfort zone” for adequate
operation at voltages significantly below 2.7V. Its ultra low
input currents (I
IN
) makes it well suited for low power active
filter application, because it allows the use of higher resistor
values and lower capacitor values. In addition, the drive
capability of the LMC6035/6 gives these op amps a broad
range of applications for low voltage systems.
Features
(Typical Unless Otherwise Noted)
nLMC6035 in micro SMD Package
nGuaranteed 2.7V, 3V, 5V and 15V Performance
nSpecified for 2 kΩand 600ΩLoads
nWide Operating Range: 2.0V to 15.5V
nUltra Low Input Current: 20fA
nRail-to-Rail Output Swing
@600Ω: 200mV from either rail at 2.7V
@100kΩ: 5mV from either rail at 2.7V
nHigh Voltage Gain: 126dB
nWide Input Common-Mode Voltage Range
-0.1V to 2.3V at V
S
= 2.7V
nLow Distortion: 0.01% at 10kHz
nLMC6035 Dual LMC6036 Quad
nSee AN-1112 for micro SMD considerations
Applications
nFilters
nHigh Impedance Buffer or Preamplifier
nBattery Powered Electronics
nMedical Instrumentation
Connection Diagram
8-Bump microSMD
01283065
Top View
(Bump Side Down)
microSMD Connection Table
Bump Number LM6035IBP
LMC6035IBPX
LMC6035ITL
LMC6035ITLX
A1 OUTPUT A OUTPUT B
B1 IN A
−
V
+
C1 IN A
+
OUTPUT A
C2 V
−
IN A
−
C3 IN B
+
IN A
+
B3 IN B
−
V
−
A3 OUTPUT B IN B
+
A2 V
+
IN B
−
October 2002
LMC6035/LMC6036 Low Power 2.7V Single Supply CMOS Operational Amplifiers
© 2002 National Semiconductor Corporation DS012830 www.national.com
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
ESD Tolerance (Note 2)
Human Body Model 3000V
Machine Model 300V
Differential Input Voltage ±Supply Voltage
Supply Voltage (V
+
−V
−
) 16V
Output Short Circuit to V
+
(Note 8)
Output Short Circuit to V
−
(Note 3)
Lead Temperature (soldering, 10
sec.) 260˚C
Current at Output Pin ±18mA
Current at Input Pin ±5mA
Current at Power Supply Pin 35mA
Storage Temperature Range −65˚C to +150˚C
Junction Temperature (Note 4) 150˚C
Operating Ratings (Note 1)
Supply Voltage 2.0V to 15.5V
Temperature Range
LMC6035I and LMC6036I −40˚C ≤T
J
≤+85˚C
Thermal Resistance (θ
JA
)
8-pin MSOP 230˚C/W
8-pin SOIC 175˚C/W
14-pin SOIC 127˚C/W
14-pin TSSOP 137˚C/W
8-Bump (6 mil) micro SMD 220˚C/W
8-Bump (12 mil) Thin micro
SMD
220˚C/W
DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25˚C, V
+
= 2.7V, V
−
= 0V, V
CM
= 1.0V, V
O
= 1.35V and R
L
>1MΩ.
Boldface limits apply at the temperature extremes.
Symbol Parameter Conditions
LMC6035I/LMC6036I
Units
Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
V
OS
Input Offset Voltage 0.5 5
6
mV
TCV
OS
Input Offset Voltage
Average Drift 2.3 µV/˚C
I
IN
Input Current (Note 11) 0.02 90 pA
I
OS
Input Offset Current (Note 11) 0.01 45 PA
R
IN
Input Resistance >10 Tera Ω
CMRR Common Mode Rejection
Ratio
0.7V ≤V
CM
≤12.7V,
V
+
= 15V
63
60
96 dB
+PSRR Positive Power Supply
Rejection Ratio
5V ≤V
+
≤15V,
V
O
= 2.5V
63
60
93 dB
−PSRR Negative Power Supply
Rejection Ratio
0V ≤V
−
≤−10V,
V
O
= 2.5V, V
+
=5V
74
70
97 dB
V
CM
Input Common-Mode
Voltage Range
V
+
= 2.7V
For CMRR ≥40dB
−0.1 0.3
0.5 V
2.0
1.7
2.3
V
+
=3V
For CMRR ≥40dB
−0.3 0.1
0.3 V
2.3
2.0
2.6
V
+
=5V
For CMRR ≥50dB
−0.5 −0.2
0.0 V
4.2
3.9
4.5
V
+
= 15V
For CMRR ≥50dB
−0.5 −0.2
0.0 V
14.0
13.7
14.4
LMC6035/LMC6036
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DC Electrical Characteristics (Continued)
Unless otherwise specified, all limits guaranteed for T
J
= 25˚C, V
+
= 2.7V, V
−
= 0V, V
CM
= 1.0V, V
O
= 1.35V and R
L
>1MΩ.
Boldface limits apply at the temperature extremes.
Symbol Parameter Conditions
LMC6035I/LMC6036I
Units
Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
A
V
Large Signal Voltage Gain
(Note 7)
R
L
= 600ΩSourcing 100
75
1000 V/mV
Sinking 25
20
250 V/mV
R
L
=2kΩSourcing 2000 V/mV
Sinking 500 V/mV
V
O
Output Swing V
+
= 2.7V
R
L
= 600Ωto 1.35V
2.0
1.8
2.5
V
0.2 0.5
0.7
V
+
= 2.7V
R
L
=2kΩto 1.35V
2.4
2.2
2.62
V
0.07 0.2
0.4
V
+
= 15V
R
L
= 600Ωto 7.5V
13.5
13.0
14.5
V
0.36 1.25
1.50
V
+
= 15V,
R
L
=2kΩto 7.5V
14.2
13.5
14.8
V
0.12 0.4
0.5
I
O
Output Current V
O
= 0V Sourcing 4
3
8
mA
V
O
= 2.7V Sinking 3
2
5
I
S
Supply Current LMC6035 for Both Amplifiers
V
O
= 1.35V
0.65 1.6
1.9 mA
LMC6036 for All Four Amplifiers
V
O
= 1.35V
1.3 2.7
3.0
AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25˚C, V
+
= 2.7V, V
−
= 0V, V
CM
= 1.0V, V
O
= 1.35V and R
L
>1MΩ.
Boldface limits apply at the temperature extremes.
Symbol Parameter Conditions Typ Units
(Note 5)
SR Slew Rate (Note 9) 1.5 V/µs
GBW Gain Bandwidth Product V
+
= 15V 1.4 MHz
θ
m
Phase Margin 48 ˚
G
m
Gain Margin 17 dB
Amp-to-Amp Isolation (Note 10) 130 dB
e
n
Input-Referred Voltage Noise f = 1kHz 27
V
CM
=1V
i
n
Input Referred Current Noise f = 1kHz 0.2
THD Total Harmonic Distortion f = 10kHz, A
V
= −10
R
L
=2kΩ,V
O
=8V
PP
0.01 %
LMC6035/LMC6036
www.national.com3
AC Electrical Characteristics (Continued)
Unless otherwise specified, all limits guaranteed for T
J
= 25˚C, V
+
= 2.7V, V
−
= 0V, V
CM
= 1.0V, V
O
= 1.35V and R
L
>1MΩ.
Boldface limits apply at the temperature extremes.
Symbol Parameter Conditions Typ Units
(Note 5)
V
+
= 10V
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.
Note 2: Human body model, 1.5kΩin series with 100pF.
Note 3: Applies to both single-supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature can result in exceeding the
maximum allowed junction temperature of 150˚C. Output currents in excess of 30mA over long term may adversely affect reliability.
Note 4: The maximum power dissipation is a function of TJ(MAX),θJA, and TA. The maximum allowable power dissipation at any ambient temperature is
PD=(T
J(MAX) −TA)/θJA. All numbers apply for packages soldered directly onto a PC board with no air flow.
Note 5: Typical Values represent the most likely parametric norm or one sigma value.
Note 6: All limits are guaranteed by testing or statistical analysis.
Note 7: V+= 15V, VCM = 7.5V and R Lconnected to 7.5V. For Sourcing tests, 7.5V ≤VO≤11.5V. For Sinking tests, 3.5V ≤VO≤7.5V.
Note 8: Do not short circuit output to V+when V+is greater than 13V or reliability will be adversely affected.
Note 9: V+= 15V. Connected as voltage follower with 10V step input. Number specified is the slower of the positive and negative slew rates.
Note 10: Input referred, V += 15V and RL= 100kΩconnected to 7.5V. Each amp excited in turn with 1kHz to produce VO=12V
PP.
Note 11: Guaranteed by design.
LMC6035/LMC6036
www.national.com 4
Typical Performance Characteristics Unless otherwise specified, V
S
= 2.7V, single supply, T
A
=
25˚C
Supply Current vs. Supply Voltage (Per Amplifier) Input Current vs. Temperature
01283052 01283053
Sourcing Current vs. Output Voltage Sourcing Current vs. Output Voltage
01283054 01283055
Sinking Current vs. Output Voltage Sinking Current vs. Output Voltage
01283056 01283057
LMC6035/LMC6036
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Typical Performance Characteristics Unless otherwise specified, V
S
= 2.7V, single supply, T
A
=
25˚C (Continued)
Output Voltage Swing vs. Supply Voltage Input Noise vs. Frequency
01283058 01283059
Input Noise vs. Frequency Amp to Amp Isolation vs. Frequency
01283060 01283061
Amp to Amp Isolation vs. Frequency +PSRR vs. Frequency
01283062
01283032
LMC6035/LMC6036
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Typical Performance Characteristics Unless otherwise specified, V
S
= 2.7V, single supply, T
A
=
25˚C (Continued)
−PSRR vs. Frequency CMRR vs. Frequency
01283033 01283034
CMRR vs. Input Voltage CMRR vs. Input Voltage
01283035 01283036
Input Voltage vs. Output Voltage Input Voltage vs. Output Voltage
01283014 01283015
LMC6035/LMC6036
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Typical Performance Characteristics Unless otherwise specified, V
S
= 2.7V, single supply, T
A
=
25˚C (Continued)
Frequency Response vs. Temperature Frequency Response vs. Temperature
01283016 01283017
Gain and Phase vs. Capacitive Load Gain and Phase vs. Capacitive Load
01283018 01283019
Slew Rate vs. Supply Voltage Non-Inverting Large Signal Response
01283037
01283020
LMC6035/LMC6036
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Typical Performance Characteristics Unless otherwise specified, V
S
= 2.7V, single supply, T
A
=
25˚C (Continued)
Non-Inverting Large Signal Response Non-Inverting Large Signal Response
01283021 01283022
Non-Inverting Small Signal Response Non-Inverting Small Signal Response
01283023 01283024
Non-Inverting Large Signal Response Inverting Large Signal Response
01283025 01283026
LMC6035/LMC6036
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Typical Performance Characteristics Unless otherwise specified, V
S
= 2.7V, single supply, T
A
=
25˚C (Continued)
Inverting Large Signal Response Inverting Large Signal Response
01283027 01283028
Inverting Small Signal Response Inverting Small Signal Response
01283029 01283030
Inverting Small Signal Response Stability vs. Capacitive Load
01283031
01283038
LMC6035/LMC6036
www.national.com 10
Typical Performance Characteristics Unless otherwise specified, V
S
= 2.7V, single supply, T
A
=
25˚C (Continued)
Stability vs. Capacitive Load Stability vs. Capacitive Load
01283039 01283040
Stability vs. Capacitive Load Stability vs. Capacitive Load
01283041 01283042
Stability vs. Capacitive Load
01283043
LMC6035/LMC6036
www.national.com11
1.0 Application Notes
1.1 Background
The LMC6035/6 is exceptionally well suited for low voltage
applications. A desirable feature that the LMC6035/6 brings
to low voltage applications is its output drive capability — a
hallmark for National’s CMOS amplifiers. The circuit of Fig-
ure 1 illustrates the drive capability of the LMC6035/6 at 3V
of supply. It is a differential output driver for a one-to-one
audio transformer, like those used for isolating ground from
the telephone lines. The transformer (T1) loads the op amps
with about 600Ωof AC load, at 1 kHz. Capacitor C1 functions
to block DC from the low winding resistance of T1. Although
the value of C1 is relatively high, its load reactance (Xc) is
negligible compared to inductive reactance (X
I
) of T1.
The circuit in Figure 1 consists of one input signal and two
output signals. U1A amplifies the input with an inverting gain
of −2, while the U1B amplifies the input with a non-inverting
gain of +2. Since the two outputs are 180˚ out of phase with
each other, the gain across the differential output is 4. As the
differential output swings between the supply rails, one of
the op amps sources the current to the load, while the other
op amp sinks the current.
How good a CMOS op amp can sink or source a current is
an important factor in determining its output swing capability.
The output stage of the LMC6035/6 — like many op
amps — sources and sinks output current through two
complementary transistors in series. This “totem pole” ar-
rangement translates to a channel resistance (R
dson
) at each
supply rail which acts to limit the output swing. Most CMOS
op amps are able to swing the outputs very close to the
rails — except, however, under the difficult conditions of low
supply voltage and heavy load. The LMC6035/6 exhibits
exceptional output swing capability under these conditions.
The scope photos of Figure 2 and Figure 3 represent mea-
surements taken directly at the output (relative to GND) of
U1A, in Figure 1.Figure 2 illustrates the output swing capa-
bility of the LMC6035, while Figure 3 provides a benchmark
comparison. (The benchmark op amp is another low voltage
(3V) op amp manufactured by one of our reputable competi-
tors.)
Notice the superior drive capability of LMC6035 when com-
pared with the benchmark measurement — even though the
benchmark op amp uses twice the supply current.
Not only does the LMC6035/6 provide excellent output swing
capability at low supply voltages, it also maintains high open
loop gain (A
VOL
) with heavy loads. To illustrate this, the
LMC6035 and the benchmark op amp were compared for
their distortion performance in the circuit of Figure 1. The
graph of Figure 4 shows this comparison. The y-axis repre-
sents percent Total Harmonic Distortion (THD plus noise)
across the loaded secondary of T1. The x-axis represents
the input amplitude of a 1 kHz sine wave. (Note that T1 loses
about 20% of the voltage to the voltage divider of R
L
(600Ω)
and T1’s winding resistances — a performance deficiency of
the transformer.)
01283044
FIGURE 1. Differential Driver
01283045
FIGURE 2. Output Swing Performance of
the LMC6035 per the Circuit of Figure 1
01283046
FIGURE 3. Output Swing Performance of Benchmark
Op Amp per the Circuit of Figure 1
LMC6035/LMC6036
www.national.com 12
1.0 Application Notes (Continued)
Figure 4 shows the superior distortion performance of
LMC6035/6 over that of the benchmark op amp. The heavy
loading of the circuit causes the A
VOL
of the benchmark part
to drop significantly which causes increased distortion.
1.2 APPLICATION CIRCUITS
1.2.1 Low-Pass Active Filter
A common application for low voltage systems would be
active filters, in cordless and cellular phones for example.
The ultra low input currents (I
IN
) of the LMC6035/6 makes it
well suited for low power active filter applications, because it
allows the use of higher resistor values and lower capacitor
values. This reduces power consumption and space.
Figure 5 shows a low pass, active filter with a Butterworth
(maximally flat) frequency response. Its topology is a Sallen
and Key filter with unity gain. Note the normalized compo-
nent values in parenthesis which are obtainable from stan-
dard filter design handbooks. These values provide a 1Hz
cutoff frequency, but they can be easily scaled for a desired
cutoff frequency (f
c
). The bold component values of Figure 5
provide a cutoff frequency of 3kHz. An example of the scal-
ing procedure follows Figure 5.
1.2.1.1 Low-Pass Frequency Scaling Procedure
The actual component values represented in bold of Figure 5
were obtained with the following scaling procedure:
1. First determine the frequency scaling factor (FSF) for
the desired cutoff frequency. Choosing f
c
at 3kHz, pro-
vides the following FSF computation:
FSF=2πx 3kHz
(desired cutoff freq.)
= 18.84 x 10
3
2. Then divide all of the normalized capacitor values by the
FSF as follows: C1’ = C
(Normalized)
/FSF C1’ =
0.707/18.84 x 10
3
= 37.93 x 10
−6
C2’ = 1.414/18.84
x10
3
= 75.05 x 10
−6
(C1’ and C2’: prior to impedance
scaling)
3. Last, choose an impedance scaling factor (Z). This Z
factor can be calculated from a standard value for C2.
Then Z can be used to determine the remaining compo-
nent values as follows:
Z = C2’/C2
(chosen)
= 75.05 x 10
−6
/6.8nF = 8.4k
C1 = C1’/Z = 37.93 x 10
−6
/8.4k = 4.52nF
(Standard capacitor value chosen for C1 is 4.7nF )R1=
R1
(normalized)
xZ=1Ωx 8.4k = 8.4kΩR2=R2
(normalized)
xZ=1Ωx 8.4k = 8.4kΩ
(Standard value chosen for R1 and R2 is 8.45kΩ)
1.2.2 High Pass Active Filter
The previous low-pass filter circuit of Figure 5 converts to a
high-pass active filter per Figure 6.
01283047
FIGURE 4. THD+Noise Performance of LMC6035 and
“Benchmark” per Circuit of Figure 1
01283048
FIGURE 5. 2-Pole, 3kHz, Active, Sallen and Key,
Lowpass Filter with Butterworth Response
01283049
FIGURE 6. 2 Pole, 300Hz, Sallen and Key,
High-Pass Filter
LMC6035/LMC6036
www.national.com13
1.0 Application Notes (Continued)
1.2.2.1 High-Pass Frequency Scaling Procedure
Choose a standard capacitor value and scale the imped-
ances in the circuit according to the desired cutoff frequency
(300Hz) as follows: C = C1 = C2 Z = 1 Farad/C
(chosen)
x2πx (desired cutoff freq.) = 1 Farad/6.8nF x2πx 300
Hz = 78.05k
R1=ZxR1
(normalized)
= 78.05k x (1/0.707) = 110.4kΩ
(Standard value chosen for R1 is 110kΩ)
R2=ZxR2
(normalized)
= 78.05k x (1/1.414) = 55.2kΩ
(Standard value chosen for R1 is 54.9kΩ)
1.2.3 Dual Amplifier Bandpass Filter
The dual amplifier bandpass (DABP) filter features the ability
to independently adjust f
c
and Q. In most other bandpass
topologies, the f
c
and Q adjustments interact with each other.
The DABP filter also offers both low sensitivity to component
values and high Qs. The following application of Figure 7,
provides a 1kHz center frequency andaQof100.
1.2.3.1 DABP Component Selection Procedure
Component selection for the DABP filter is performed as
follows:
1. First choose a center frequency (f
c
). Figure 7 represents
component values that were obtained from the following
computation for a center frequency of 1kHz. R2 = R3
= 1/(2 πf
c
C) Given: f
c
= 1kHz and C
(chosen)
=6.8nF
R2 = R3 = 1/(2πx 3kHz x 6.8nF) = 23.4kΩ
(Chosen standard value is 23.7kΩ)
2. Then compute R1 for a desired Q (f
c
/BW) as follows:
R1 = Q x R2. ChoosingaQof100, R1 = 100 x
23.7kΩ=2.37MΩ.
1.3 PRINTED-CIRCUIT-BOARD LAYOUT
FOR HIGH-IMPEDANCE WORK
It is generally recognized that any circuit which must operate
with <1000pA of leakage current requires special layout of
the PC board. If one wishes to take advantage of the
ultra-low bias current of the LMC6035/6, typically <0.04pA,
it is essential to have an excellent layout. Fortunately, the
techniques for obtaining low leakages are quite simple. First,
the user must not ignore the surface leakage of the PC
board, even though it may at times appear acceptably low.
Under conditions of high humidity, dust or contamination, the
surface leakage will be appreciable.
To minimize the effect of any surface leakage, lay out a ring
of foil completely surrounding the LMC6035 or LMC6036
inputs and the terminals of capacitors, diodes, conductors,
resistors, relay terminals, etc. connected to the op amp’s
inputs. See Figure 8. To have a significant effect, guard rings
should be placed on both the top and bottom of the PC
board. This PC foil must then be connected to a voltage
which is at the same voltage as the amplifier inputs, since no
leakage current can flow between two points at the same
potential. For example, a PC board trace-to-pad resistance
of 10
12
Ω, which is normally considered a very large resis-
tance, could leak 5pA if the trace were a 5V bus adjacent to
the pad of an input. This would cause a 100 times degrada-
tion from the amplifiers actual performance. However, if a
guard ring is held within 5mV of the inputs, then even a
resistance of 10
11
Ωwould cause only 0.05pA of leakage
current, or perhaps a minor (2:1) degradation of the amplifi-
er’s performance. See Figure 9a, b, c for typical connections
of guard rings for standard op amp configurations. If both
inputs are active and at high impedance, the guard can be
tied to ground and still provide some protection; see Figure 9
d.
01283050
FIGURE 7. 2 Pole, 1kHz Active, Bandpass Filter
01283007
FIGURE 8. Example, using the LMC6036
of Guard Ring in P.C. Board Layout
LMC6035/LMC6036
www.national.com 14
1.0 Application Notes (Continued)
1.3.1 CAPACITIVE LOAD TOLERANCE
Like many other op amps, the LMC6035/6 may oscillate
when its applied load appears capacitive. The threshold of
oscillation varies both with load and circuit gain. The con-
figuration most sensitive to oscillation is a unity-gain follower.
See the Typical Performance Characteristics.
The load capacitance interacts with the op amp’s output
resistance to create an additional pole. If this pole frequency
is sufficiently low, it will degrade the op amp’s phase margin
so that the amplifier is no longer stable at low gains. As
shown in Figure 10, the addition of a small resistor
(50Ω–100Ω) in series with the op amp’s output, and a ca-
pacitor (5pF–10pF) from inverting input to output pins, re-
turns the phase margin to a safe value without interfering
with lower-frequency circuit operation. Thus, larger values of
capacitance can be tolerated without oscillation. Note that in
all cases, the output will ring heavily when the load capaci-
tance is near the threshold for oscillation.
1.4 Micro SMD Considerations
Contrary to what might be guessed, the micro SMD package
does not follow the trend of smaller packages having higher
thermal resistance. LMC6035 in micro SMD has thermal
resistance of 220˚C/W compared to 230˚C/W in MSOP. Even
when driving a 600Ωload and operating from ±7.5V sup-
plies, the maximum temperature rise will be under 4.5˚C. For
application information specific to micro SMD, see Applica-
tion note AN-1112.
Capacitive load driving capability is enhanced by using a pull
up resistor to V
+
(Figure 11). Typically a pull up resistor
conducting 500µA or more will significantly improve capaci-
tive load responses. The value of the pull up resistor must be
determined based on the current sinking capability of the
amplifier with respect to the desired output swing. Open loop
gain of the amplifier can also be affected by the pull up
resistor (see Electrical Characteristics).
01283008
(a) Inverting Amplifier
01283009
(b) Non-Inverting Amplifier
01283010
(c) Follower
01283011
(d) Howland Current Pump
FIGURE 9. Guard Ring Connections
01283005
FIGURE 10. Rx, Cx Improve Capacitive Load Tolerance
LMC6035/LMC6036
www.national.com15
1.0 Application Notes (Continued)
Connection Diagrams
8-Pin SO/MSOP 14-Pin SO/TSSOP
01283001
Top View
01283002
Top View
Ordering Information
Package Temperature Range Transport Media NSC Drawing
Industrial
−40˚C to +85˚C
8-pin Small Outline (SO) LMC6035IM Rails M08A
LMC6035IMX 2.5k Units Tape and Reel
8-pin Mini Small Outline
(MSOP)
LMC6035IMM 1k Units Tape and Reel
MUA08A
LMC6035IMMX 3.5k Units Tape and Reel
14-pin Small Outline (SO) LMC6036IM Rails M14A
LMC6036IMX 2.5k Units Tape and Reel
14-pin Thin Shrink Small
Outline (TSSOP)
LMC6036IMT Rails MTC14
LMC6036IMTX 2.5k Units Tape and Reel
8-Bump micro SMD
(Small Bump)
LMC6035IBP 250 Units Tape and Reel BPA08FFB
LMC6035IBPX 3k Units Tape and Reel
8-Bump Thin micro SMD
(Large Bump)
LMC6035ITL 250 Units Tape and Reel TLA08JQA
LMC6035ITLX 3k Units Tape and Reel
01283006
FIGURE 11. Compensating for Large Capacitive Loads with a Pull Up Resistor
LMC6035/LMC6036
www.national.com 16
Physical Dimensions inches (millimeters)
unless otherwise noted
8-Lead (0.150" Wide) Molded
Small Outline Package, JEDEC
NS Package Number M08A
8-Lead (0.150" Wide) Molded
Mini Small Outline Package, JEDEC
NS Package Number MUA08A
LMC6035/LMC6036
www.national.com17
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
14-Lead (0.150" Wide) Molded
Small Outline Package, JEDEC
NS Package Number M14A
14-Pin TSSOP
NS Package Number MTC14
LMC6035/LMC6036
www.national.com 18
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
NOTE: UNLESS OTHERWISE SPECIFIED.
1. EPOXY COATING.
2. 63Sn/37Pb EUTECTIC BUMP.
3. RECOMMEND NON-SOLDER MASK DEFINED LANDING PAD.
4. PIN A1 IS ESTABLISHED BY LOWER LEFT CORNER WITH RESPECT TO TEXT ORIENTATION PINS ARE NUMBERED COUNTERCLOCKWISE.
5. XXX IN DRAWING NUMBER REPRESENTS PACKAGE SIZE VARIATION WHERE X1 IS PACKAGE WIDTH, X2 IS PACKAGE LENGTH AND X3 IS
PACKAGE HEIGHT.
6. REFERENCE JEDEC REGISTRATION MO-211, VARIATION BC.
8-Bump micro SMD (6 mil bumps)
NS Package Number BPA08FFB
X
1
= 1.412mm X
2
= 1.412mm X
3
= 0.850mm
LMC6035/LMC6036
www.national.com19
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
NOTE: UNLESS OTHERWISE SPECIFIED.
1. EPOXY COATING.
2. 63Sn/37Pb EUTECTIC BUMP.
3. RECOMMEND NON-SOLDER MASK DEFINED LANDING PAD.
4. PIN A1 IS ESTABLISHED BY LOWER LEFT CORNER WITH RESPECT TO TEXT ORIENTATION PINS ARE NUMBERED COUNTERCLOCKWISE.
5. XXX IN DRAWING NUMBER REPRESENTS PACKAGE SIZE VARIATION WHERE X1 IS PACKAGE WIDTH, X2 IS PACKAGE LENGTH AND X3 IS
PACKAGE HEIGHT.
6. REFERENCE JEDEC REGISTRATION MO-211, VARIATION BC.
8-Bump Thin micro SMD (12 mil bumps)
NS Package Number TLA08JQA
X
1
= 1.717mm X
2
= 1.869mm X
3
= 0.600mm
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NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and
whose failure to perform when properly used in
accordance with instructions for use provided in the
labeling, can be reasonably expected to result in a
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2. A critical component is any component of a life
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can be reasonably expected to cause the failure of
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Tel: 81-3-5639-7560
Fax: 81-3-5639-7507
www.national.com
LMC6035/LMC6036 Low Power 2.7V Single Supply CMOS Operational Amplifiers
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
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