Datasheet ICL7611, ICL7612 Datasheet (Intersil Corporation)

ICL7611, ICL7612

Data Sheet October 1999

1.4MHz, Low Power CMOS Operational
Amplifiers

The ICL761X/762X/764X series is a family of monolithic
CMOS operational amplifiers. These devices provide the
designer with high performance operation at low supply
voltages and selectable quiescent currents, and are an ideal
design tool when ultra low input current and low power
dissipation are desired.

The basic amplifier will operate at supply voltages ranging
from ±1V to ±8V, and may be operated from a single
Lithium cell.

A unique quiescent current programming pin allows setting
of standby current to 1mA, 100µA, or 10µA, with no external
components. This results in power consumption as low as
20µW. The output swing ranges to within a few millivolts of
the supply voltages.

Of particular significance is the extremely low (1pA) input
current, input noise current of 0.01pA/√
impedance. These features optimize performance in very
high source impedance applications.

The inputs are internally protected. Outputs are fully
protected against short circuits to ground or to either supply.

ACperformanceisexcellent,withaslew rate of 1.6V/µs, and
unity gain bandwidth of 1MHz at I

Because of the low power dissipation, junction temperature
rise and drift are quite low. Applications utilizing these
features may include stable instruments, extended life
designs, or high density packages.

Hz, and 1012Ω input

= 1mA.

Q

File Number 2919.5

Features

• Wide Operating Voltage Range . . . . . . . . . . . ±1V to ±8V

• High Input Impedance . . . . . . . . . . . . . . . . . . . . . . 10

12

• Programmable Power Consumption. . . . . . Low as 20µW

• Input Current Lower Than BIFETs . . . . . . . . . . . 1pA (Typ)

• Output Voltage Swing . . . . . . . . . . . . . . . . . . . V+ and V-

• Input Common Mode VoltageRange Greater Than Supply
Rails (ICL7612)

Applications

• Portable Instruments

• Telephone Headsets

• Hearing Aid/Microphone Amplifiers

• Meter Amplifiers

• Medical Instruments

• High Impedance Buffers

Pinouts

ICL7611, ICL7612

(PDIP, SOIC)

TOP VIEW

BAL

-IN

+IN

1
2

-

+

3
4

V-

8
7
6
5

IQ SET
V+
OUT
BAL

Ω

Ordering Information

TEMP.

PART

NUMBER

ICL7611BCPA 0 to 70 8 Ld PDIP - B Grade E8.3
ICL7611DCPA 0 to 70 8 Ld PDIP - D Grade E8.3
ICL7611DCBA 0 to 70 8 Ld SOIC - D Grade M8.15
ICL7611DCBA-T 0 to 70 8 Ld SOIC - D Grade

ICL7612BCPA 0 to 70 8 Ld PDIP - B Grade E8.3
ICL7612DCPA 0 to 70 8 Ld PDIP - D Grade E8.3
ICL7612DCBA 0 to 70 8 Ld SOIC - D Grade M8.15
ICL7612DCBA-T 0 to 70 8 Ld SOIC - D Grade

RANGE

(oC) PACKAGE

Tape and Reel

Tape and Reel

1

PKG.

NO.

M8.15

M8.15

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 321-724-7143

| Copyright © Intersil Corporation 1999

ICL7611, ICL7612

Absolute Maximum Ratings Thermal Information

Supply Voltage V+ to V-. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V

Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . V- -0.3 to V+ +0.3V

Differential Input Voltage (Note 1) . . . . . . . . . [(V+ +0.3) - (V- -0.3)]V

Duration of Output Short Circuit (Note 2). . . . . . . . . . . . . . Unlimited

Operating Conditions

Temperature Range

ICL76XXC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0oC to 70oC

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

NOTES:

1. Long term offset voltage stability will be degraded if large input differential voltages are applied for long periods of time.

2. The outputs may be shorted to ground or to either supply, for V
exceeded.

3. θJA is measured with the component mounted on an evaluation PC board in free air.

SUPPLY

Thermal Resistance (Typical, Note 3) θJA (oC/W)

PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

Maximum Junction Temperature (Plastic Package) . . . . . . . .150oC

Maximum Storage Temperature Range. . . . . . . . . . -65oC to 150oC

Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300oC

(SOIC - Lead Tips Only)

≤10V. Care must be taken to insure that the dissipation rating is not

Electrical Specifications V

PARAMETER SYMBOL

Input Offset Voltage V

Temperature
Coefficient of V

Input Offset Current I

Input Bias Current I

Common Mode
Voltage Range
(Except ICL7612)

Extended Common
Mode Voltage Range
(ICL7612 Only)

Output Voltage Swing V

Large Signal Voltage
Gain

OS

OS

∆VOS/∆TRS≤ 100kΩ - - 15 - - 25 - µV/oC

OS

BIAS

V

CMRIQ

V

CMRIQ

OUTIQ

A

VOL

= ±5V, Unless Otherwise Specified

SUPPLY

TEST

CONDITIONS TEMP (oC)

RS≤ 100kΩ 25 - - 5 - - 15 mV

Full - - 7 - - 20 mV

25 - 0.5 30 - 0.5 30 pA

Full - - 300 - - 300 pA

25 - 1.0 50 - 1.0 50 pA

Full - - 400 - - 400 pA

= 10µA25±4.4 - - ±4.4 - - V
IQ = 100µA25±4.2 - - ±4.2 - - V
IQ = 1mA 25 ±3.7 - - ±3.7 - - V

= 10µA25±5.3 - - ±5.3 - - V
IQ = 100µA 25 +5.3, -5.1 - - +5.3, -5.1 - - V
IQ = 1mA 25 +5.3, -4.5 - - +5.3, -4.5 - - V

= 10µA, RL = 1MΩ 25 ±4.9 - - ±4.9 - - V

Full ±4.8 - - ±4.8 - - V

IQ = 100µA, RL = 100kΩ 25 ±4.9 - - ±4.9 - - V

Full ±4.8 - - ±4.8 - - V

IQ = 1mA, RL = 10kΩ 25 ±4.5 - - ±4.5 - - V

Full ±4.3 - - ±4.3 - - V

VO = ±4.0V, RL=1MΩ,
IQ = 10µA

VO= ±4.0V,RL= 100kΩ,
IQ= 100µA

VO= ±4.0V, RL= 10kΩ,
IQ = 1mA

25 80 104 - 80 104 - dB

Full 75 - - 75 - - dB

25 80 102 - 80 102 - dB

Full 75 - - 75 - - dB

25 76 83 - 76 83 - dB

Full 72 - - 72 - - dB

ICL7611B, ICL7612B ICL7611D, ICL7612D

UNITSMIN TYP MAX MIN TYP MAX

2

ICL7611, ICL7612

Electrical Specifications V

PARAMETER SYMBOL

= ±5V, Unless Otherwise Specified (Continued)

SUPPLY

TEST

CONDITIONS TEMP (oC)

ICL7611B, ICL7612B ICL7611D, ICL7612D

UNITSMIN TYP MAX MIN TYP MAX

Unity Gain Bandwidth GBW IQ = 10µA 25 - 0.044 - - 0.044 - MHz

IQ = 100µA 25 - 0.48 - - 0.48 - MHz
IQ = 1mA 25 - 1.4 - - 1.4 - MHz

Input Resistance R
Common Mode

CMRR RS≤ 100kΩ, IQ = 10µA 25 70 96 - 70 96 - dB

Rejection Ratio

IN

25 - 10

RS≤ 100kΩ, IQ= 100µA 25 70 91 - 70 91 - dB

12

--1012- Ω

RS≤ 100kΩ, IQ = 1mA 25 60 87 - 60 87 - dB

Power Supply
Rejection Ratio
(V

SUPPLY

= ±8V to

±2V)
Input Referred Noise

PSRR RS≤ 100kΩ, IQ = 10µA 25 80 94 - 80 94 - dB

RS≤ 100kΩ, IQ= 100µA 25 80 86 - 80 86 - dB
RS≤ 100kΩ, IQ = 1mA 25 70 77 - 70 77 - dB

e

RS = 100Ω, f = 1kHz 25 - 100 - - 100 - nV/√Hz

N

Voltage
Input Referred Noise

i

RS = 100Ω, f = 1kHz 25 - 0.01 - - 0.01 - pA/√Hz

N

Current
Supply Current

(No Signal, No Load)

I

SUPPLYIQ

SET = +5V, Low Bias 25 - 0.01 0.02 - 0.01 0.02 mA
IQ SET = 0V,

25 - 0.1 0.25 - 0.1 0.25 mA

Medium Bias
IQ SET = -5V, High Bias 25 - 1.0 2.5 - 1.0 2.5 mA

Channel Separation VO1/VO2AV = 100 25 - 120 - - 120 - dB
Slew Rate

(AV = 1, CL = 100pF,
VIN = 8V

P-P

)

SR IQ = 10µA, RL = 1MΩ 25 - 0.016 - - 0.016 - V/µs

IQ = 100µA, RL= 100kΩ 25 - 0.16 - - 0.16 - V/µs
IQ = 1mA, RL = 10kΩ 25 - 1.6 - - 1.6 - V/µs

Rise Time
(VIN = 50mV,
CL= 100pF)

t

IQ = 10µA, RL = 1MΩ 25 -20- -20-µs

r

IQ= 100µA, RL= 100kΩ 25 - 2 - - 2 - µs
IQ = 1mA, RL = 10kΩ 25 - 0.9 - - 0.9 - µs

Overshoot Factor
(VIN = 50mV,
CL= 100pF)

OS IQ = 10µA, RL = 1MΩ 25 - 5 - - 5 - %

IQ= 100µA, RL= 100kΩ 25 -10- -10- %
IQ = 1mA, RL = 10kΩ 25 -40- -40- %

Electrical Specifications V

SUPPLY

PARAMETER SYMBOL

Input Offset Voltage V

Temperature Coefficient of V

OS

Input Offset Current I

Input Bias Current I

Common Mode Voltage Range
(Except ICL7612)

3

= ±1V, IQ = 10µA, Unless Otherwise Specified

TEST

CONDITIONS

RS≤ 100kΩ 25 - - 5 mV

OS

TEMP

(oC)

ICL7611B, ICL7612B

UNITSMIN TYP MAX

Full - - 7 mV

∆VOS/∆TRS≤ 100kΩ - - 15 - µV/oC

OS

25 - 0.5 30 pA

Full - - 300 pA

BIAS

25 - 1.0 50 pA

Full - - 500 pA

V

CMR

25 ±0.6 - - V

ICL7611, ICL7612

Electrical Specifications V

PARAMETER SYMBOL

Extended Common Mode
Voltage Range (ICL7612 Only)

Output Voltage Swing V

= ±1V, IQ = 10µA, Unless Otherwise Specified (Continued)

SUPPLY

TEST

CONDITIONS

V

CMR

RL = 1MΩ 25 ±0.98 - - V

OUT

TEMP

(oC)

25 +0.6 to

ICL7611B, ICL7612B

UNITSMIN TYP MAX

-- V

-1.1

Full ±0.96 - - V

Large Signal Voltage Gain A

VOLVO

= ±0.1V, RL=1MΩ 25 - 90 - dB

Full - 80 - dB
Unity Gain Bandwidth GBW 25 - 0.044 - MHz
Input Resistance R

IN

25 - 10

12

- Ω
Common Mode Rejection Ratio CMRR RS≤ 100kΩ 25 - 80 - dB
Power Supply Rejection Ratio PSRR RS≤ 100kΩ 25 - 80 - dB
Input Referred Noise Voltage e
Input Referred Noise Current i
Supply Current I

SUPPLY

Slew Rate SR AV = 1, CL = 100pF,

Rise Time t

RS = 100Ω, f = 1kHz 25 - 100 - nV/√Hz

N

RS = 100Ω, f = 1kHz 25 - 0.01 - pA/√Hz

N

No Signal, No Load 25 - 6 15 µA

25 - 0.016 - V/µs

VIN = 0.2V
VIN= 50mV, CL= 100pF RL=1MΩ 25 - 20 - µs

r

, RL=1MΩ

P-P

Overshoot Factor OS VIN= 50mV,CL= 100pF, RL=1MΩ 25 - 5 - %

Schematic Diagram

BAL

+INPUT

-INPUT

V+

V­V+

V-

INPUT STAGE

3K3K

Q

P1

Q

Q

N2

N1

Q

N3

I

Q

SETTING STAGE

900K

Q

BAL

Q

P1

Q

Q

N4

Q

P5

100K

P3

N5

Q

N8

Q

P4

Q

N6

Q

P6

Q

N7

OUTPUT STAGE

Q

P7

Q

Q

N10

N9

Q

P8

CFF = 9pF

C

= 33pF

C

6.3V

6.3V

V+

Q

P9

OUTPUT

Q

N11

V-

V+ IQ SET

4

ICL7611, ICL7612

Application Information

Static Protection

All devices are static protected by the use of input diodes.
However, strong static fields should be avoided, as it is
possible for the strong fields to cause degraded diode
junction characteristics, which may result in increased input
leakage currents.

Latchup Avoidance

Junction-isolated CMOS circuits employ configurations which
produce a parasitic 4-layer (PNPN) structure. The 4-layer
structure has characteristics similar to an SCR, and under
certain circumstances maybe triggered into a low impedance
state resulting in excessive supply current. To avoid this
condition, no voltage greater than 0.3V bey ond the supply
rails may be applied to any pin. In general, the op amp
supplies must be established simultaneously with, or before
any input signals are applied. If this is not possible, the drive
circuits must limit input current flow to 2mA to preventlatchup.

Choosing the Proper I

The ICL7611 and ICL7612 have a similar I
which allows the amplifier to be set to nominal quiescent
currents of 10µA, 100µA or 1mA. These current settings
change only very slightly over the entire supply voltage
range. The ICL7611/12 have an external I
permitting user selection of quiescent current. To set the I
connect the IQ terminal as follows:

IQ = 10µA - IQ pin to V+
IQ = 100µA - IQ pin to ground. If this is not possible, any

voltage from V+ - 0.8 to V- +0.8 can be used.
I

= 1mA - IQ pin to V-

Q

NOTE: The output current available is a function of the quiescent
current setting. For maximum peak-to-peak output voltage swings
into low impedance loads, IQ of 1mA should be selected.

Q

set-up scheme,

Q

control terminal,

Q

Q

=10µA, nulling may not be possible with higher values

I

Q

of V

.

OS

Frequency Compensation

The ICL7611 and ICL7612 are internally compensated, and
are stable for closed loop gains as low as unity with
capacitive loads up to 100pF.

Extended Common Mode Input Range

The ICL7612 incorporates additional processing which
allows the input CMVR to exceed each power supply rail by

0.1V for applications where V
applications where V

≤±1.5V the input CMVR is limited

SUPP

≥±1.5V. For those

SUPP

in the positive direction, but ma y exceed the negative supply
rail by 0.1V in the negative direction (e.g., for V

SUPPLY

= ±1V,

the input CMVR would be +0.6V to -1.1V).

Operation At V

Operation at V

SUPPLY

SUPPLY

= ±1V

= ±1V is guaranteed at IQ = 10µA for

A and B grades only.
Output swings to within a few millivolts of the supply rails are

achievable for R
minimum and typically +0.9V to -0.7V at V

≥ 1MΩ. Guaranteed input CMVR is ±0.6V

L

SUPPLY

= ±1V. For
applications where greater common mode range is
desirable, refer to the description of ICL7612 above.

Typical Applications

The user is cautioned that, due to extremely high input
impedances, care must be exercised in layout, construction,
board cleanliness, and supply filtering to avoid hum and
noise pickup.

Note that in no case is I
chosen by the designer with regard to frequency response
and power dissipation.

shown. The value of IQ must be

Q

Output Stage and Load Driving Considerations

Each amplifiers’ quiescent current flows primarily in the
output stage. This is approximately 70% of the I

settings.

Q

This allows output swings to almost the supply rails for
output loads of 1MΩ, 100kΩ, and 10kΩ, using the output
stage in a highly linear class A mode. In this mode,
crossover distortion is avoided and the voltage gain is
maximized. However, the output stage can also be operated
in Class AB for higher output currents. (See graphs under
TypicalOperatingCharacteristics). Duringthe transition from
Class A to Class B operation, the output transfer
characteristic is non-linear and the voltage gain decreases.

Input Offset Nulling

Offset nulling may be achieved by connecting a 25K pot
between the BAL terminals with the wiper connected to V+.
At quiescent currents of 1mA and 100µA the nulling range
provided is adequate for all V

selections; however with

OS

5

V

IN

FIGURE 1. SIMPLE FOLLOWER (NOTE 4)

V

IN

NOTE:

4. By using theICL7612 in thisapplication, the circuitwill follow rail
to rail inputs.

+5 +5

100K

FIGURE 2. LEVEL DETECTOR (NOTE 4)

+
ICL7612

-

-

ICL7612

+

1M

RL≥10K

V

OUT

TO CMOS OR
LPTTL LOGIC

V

OUT

ICL7611, ICL7612

1µF

+

-

1M

V

OUT

TO
SUCCEED­ING
INPUT
STAGE

V

V

OL

λ

ICL7611

+

NOTE: Low leakage currents allow integration times up to several
hours.

FIGURE 3. PHOTOCURRENT INTEGRATOR

10K0.5µF

V

IN

2.2M

+
ICL7611

-

10µF

1.8K = 5%
SCALE

ADJUST

20K

20K

-

COMMON

ICL7611
+

OH

-

ICL7611
+

WAVEFORM GENERATOR

1M

1M

V- V+

1M

DUTY CYCLE

680kΩ

-

ICL7611
+

NOTE: Since theoutput rangeswingsexactlyfrom railtorail, frequency
and duty cycle are virtually independent of power supply variations.

FIGURE 4. PRECISE TRIANGLE/SQUARE WAVEGENERATOR

+8V

T

= 125oC

+

V+

OUT

I

Q

V-

-

V+

-8V

A

FIGURE 5. AVERAGING ACTO DC CONVERTER FOR A/D

CONVERTERS SUCH AS ICL7106, ICL7107,
ICL7109, ICL7116, ICL7117

V

IN

FIGURE 7. VOS NULL CIRCUIT

FIGURE 6. BURN-IN AND LIFE TEST CIRCUIT

-

V

BAL

BAL

+

25k

V+

OUT

6

ICL7611, ICL7612

0.2µF

30K 160K

+

ICL7611

-

0.2µF

0.2µF

51K100K680K

+

ICL7611

-

360K

360K

(NOTE 5)

0.2µF 0.1µF0.1µF

1M

INPUT

NOTES:

5. Note that small capacitors (25pF to 50pF) may be needed for stability in some cases.

6. The low bias currents permit high resistance and low capacitance values to be used to achievelow frequency cutoff. fC= 10Hz, A
Passband ripple = 0.1dB.

FIGURE 8. FIFTH ORDER CHEBYCHEV MULTIPLE FEEDBACK LOW PASS FILTER

1M

OUTPUT

(NOTE 5)

Typical Performance Curves

10K

1K

TA = 25oC
NO LOAD

NO SIGNAL

IQ = 1mA

4

10

3

10

V+ - V- = 10V
NO LOAD
NO SIGNAL

VCL

IQ = 1mA

=4,

IQ = 100µA

100

IQ = 1mAIQ = 10µA

SUPPLY CURRENT (µA)

10

1

0246810121416

SUPPLY VOLTAGE (V)

FIGURE 9. SUPPLY CURRENT PER AMPLIFIER vs SUPPLY

VOLTAGE

1000

VS = ±5V

100

10

1.0

INPUT BIAS CURRENT (pA)

0.1

-50 -25 0 25 50 75 100 125
FREE-AIR TEMPERATURE (

o

C)

2

10

SUPPLY CURRENT (µA)

10

1

-50 -25 0 25 50 75 100 125
FREE-AIR TEMPERATURE (

IQ = 100µA

IQ = 10µA

o

C)

FIGURE 10. SUPPLY CURRENT PER AMPLIFIER vs FREE-AIR

TEMPERATURE

1000

V

= 10V

SUPP

V

= 8V

OUT

RL = 1MΩ

= 10µA

I

100

DIFFERENTIAL VOLTAGE GAIN (kV/V)

10

1

-75

RL = 100kΩ
I

Q

= 100µA

-50 -25 0 25 50 75 100 125

R

= 10kΩ

L

= 1mA

I

Q

FREE-AIR TEMPERATURE (

Q

o

C)

FIGURE 11. INPUT BIAS CURRENT vs TEMPERATURE FIGURE 12. LARGE SIGNAL DIFFERENTIAL VOLTAGE GAIN

vs FREE-AIR TEMPERATURE

7

Typical Performance Curves (Continued)

ICL7611, ICL7612

7

10

TA = 25oC

6

V

= 15V

SUPP

10

5

10

4

10

3

10

PHASE SHIFT

= 1mA)

(I

Q

2

10

10

DIFFERENTIAL VOLTAGE GAIN (V/V)

1

0.1 1.0 10 100 1K 10K 100K 1M

IQ = 10µA

FREQUENCY (Hz)

IQ = 100µA

IQ = 1mA

0

45

90

135

PHASE SHIFT (DEGREES)

180

105

100

95

90

85

80

75

COMMON MODE REJECTION RATIO (dB)

70

-75

V

= 10V

SUPP

IQ = 10µA

IQ = 100µA

IQ = 1mA

-50 -25 0 25 50 75 100 125
FREE-AIR TEMPERATURE (

o

C)

FIGURE 13. LARGE SIGNAL FREQUENCY RESPONSE FIGURE14. COMMON MODEREJECTION RATIOvsFREE-AIR

TEMPERATURE

100

V

95

90

85

80

75

IQ = 1mA

IQ = 100µA

IQ = 10µA

SUPP

= 10V

600

500

400

300

200

TA = 25oC
3V ≤ V

SUPP

≤ 16V

70

SUPPLY VOLTAGE REJECTION RATIO (dB)

65

-50 -25 0 25 50 75 100 125-75
FREE-AIR TEMPERATURE (

o

C)

FIGURE15. POWERSUPPLYREJECTION RATIOvs FREE-AIR

TEMPERATURE

16

)

14

P-P

V

SUPP

= ±8V

12

10

8

V

SUPP

6

= ±5V

4

2

V

MAXIMUM OUTPUT VOLTAGE (V

SUPP

= ±2V

0

100 1K 10K 100K 1M 10M

FREQUENCY (Hz)

TA = 25oC

IQ = 1mA
IQ = 10µA
I

= 100µA

Q

100

0

EQUIVALENT INPUT NOISE VOLTAGE (nV/√Hz)

10 100 1K 10K 100K

FREQUENCY (Hz)

FIGURE 16. EQUIVALENTINPUT NOISE VOLTAGE vs

FREQUENCY

16

V

)

14

P-P

12

10

8

6

4

2

MAXIMUM OUTPUT VOLTAGE (V

0

10K 100K 1M 10M

= 10V

SUPP

IQ = 1mA

TA = -55oC
T

= 25oC

A

TA = 125oC

FREQUENCY (Hz)

FIGURE 17. OUTPUT VOLTAGE vs FREQUENCY FIGURE 18. OUTPUT VOLTAGE vs FREQUENCY

8

Typical Performance Curves (Continued)

ICL7611, ICL7612

16

)

P-P

MAXIMUM OUTPUT VOLTAGE (V

TA = 25oC

14

12

10

8

6

4

2 4 6 8 10 12 14 16

RL = 100kΩ - 1MΩ

RL = 10kΩ

SUPPLY VOLTAGE (V)

12

)

P-P

10

8

6

4

2

MAXIMUM OUTPUT VOLTAGE (V

0

-75 -50 -25 0 25 50 75 100 125

RL = 100kΩ

V

SUPP

= 1mA

I

Q

= 10V

FREE-AIR TEMPERATURE (

RL = 10kΩ

RL = 2kΩ

o

C)

FIGURE 19. OUTPUT VOLTAGE vs SUPPLY VOLTAGE FIGURE 20. OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE

40

IQ = 1mA

30

20

10

0.01

IQ = 10µA

0.1

IQ = 100µA

1.0

IQ = 1mA

MAXIMUM OUTPUT SOURCE CURRENT (mA)

0

0246810121416

SUPPLY VOLTAGE (V)

MAXIMUM OUTPUT SINK CURRENT (mA)

10

0246810121416

SUPPLY VOLTAGE (V)

FIGURE 21. OUTPUT SOURCE CURRENT vs SUPPLY VOLTAG E FIGURE 22. OUTPUT SINK CURRENT vs SUPPLY V OLTAGE

16

)

P-P

MAXIMUM OUTPUT VOLTAGE (V

TA = 25oC
V+ - V- = 10V

14

12

10

= 1mA

I

Q

8

6

4

2

0

0.1 1.0 10 100

LOAD RESISTANCE (kΩ)

8

6

4

2

0

-2

-4

INPUT AND OUTPUT VOLTAGE (V)

-6

TA = 25oC, V
R

= 10kΩ, CL = 100pF

L

024681012

= 10V

SUPP

OUTPUT

INPUT

TIME (µs)

FIGURE 23. OUTPUT VOLTAGE vs LOAD RESISTANCE FIGURE 24. VOLTAGEFOLLOWER LARGE SIGNAL PULSE

RESPONSE (IQ = 1mA)

9

Typical Performance Curves (Continued)

ICL7611, ICL7612

8

6

4

2

0

-2

-4

INPUT AND OUTPUT VOLTAGE (V)

-6

TA = 25oC, V
R

= 100kΩ, CL = 100pF

L

0 20 40 60 80 100 120

= 10V

SUPP

OUTPUT

INPUT

TIME (µs)

FIGURE 25. VOLTAGEFOLLOWER LARGE SIGNAL PULSE

RESPONSE (IQ = 100µA)

8

6

4

2

0

-2

-4

INPUT AND OUTPUT VOLTAGE (V)

-6

TA = 25oC, V

= 1MΩ, CL = 100pF

R

L

0 200 400 600 800 1000 1200

= 10V

SUPP

OUTPUT

INPUT

TIME (µs)

FIGURE 26. VOLTAGEFOLLOWER LARGE SIGNAL PULSE

RESPONSE (IQ = 10µA)

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