Intersil Corporation ICL7621, ICL7641, ICL7642 Datasheet

ICL7621, ICL7641, ICL7642

Data Sheet April 1999

Dual/Quad, 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. They 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. The output swing ranges to within a few millivolts of the
supply voltages.

The quiescent supply current of these amplifiers is set to 3
different ranges at the factory. Both amps of the dual
ICL7621 are set to an I
the quad ICL7641 and ICL7642 are set to an I

of 100µA, while each amplifier of

Q

of 1mA and

Q

10µA respectively. This results in power consumption as low
as 20µW per amplifier.

Of particular significance is the extremely low (1pA) input
current, input noise current of 0.01pA/√

Hz, and 1012Ω input
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.

ACperformance is excellent, with a slew rate of 1.6V/µs, and
unity gain bandwidth of 1MHz at I

= 1mA.

Q

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.

Ordering Information

TEMP.

PART NUMBER

RANGE (oC) PACKAGE

ICL7621ACPA 0 to 70 8 Ld PDIP -

A Grade - IQ = 100µA

ICL7621BCPA 0 to 70 8 Ld PDIP -

B Grade - IQ = 100µA

ICL7621DCPA 0 to 70 8 Ld PDIP -

D Grade - IQ = 100µA

ICL7621AMTV -55 to 125 8 Pin Metal Can -

A Grade - IQ = 100µA

ICL7621DCBA 0 to 70 8 Ld SOIC -

D Grade - IQ = 100µA

ICL7621DCBA-T 0 to 70 8 Ld SOIC - D Grade -

Tape and Reel ­IQ = 100µA

ICL7641ECPD 0 to 70 14 Ld PDIP - E Grade -

IQ = 1mA

ICL7642ECPD 0 to 70 14 Ld PDIP - E Grade -

IQ = 10µA

PKG.

NO.

E8.3

E8.3

E8.3

T8.C

M8.15

M8.15

E14.3

E14.3

File Number

3403.3

Features

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

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

12

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

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

• Available as Duals and Quads (Ref er to ICL7611 for Singles)

• Low Power Replacement for Many Standard Op Amps

Applications

• Portable Instruments

• Telephone Headsets

• Hearing Aid/Microphone Amplifiers

• Meter Amplifiers

• Medical Instruments

• High Impedance Buffers

Pinouts

ICL7621 (PDIP, SOIC)

TOP VIEW

OUT

-IN

+IN

1

A

2

A

A

V-

-

+

3
4

8

V+

7

OUT

6

+

-IN

-

5

+IN

ICL7621 (METAL CAN)

TOP VIEW

V+

8

OUT

-IN

A

+IN

1

A

-

+

2

3

A

4
V-

OUT

7

-

+

-IN

6

+IN

5

ICL7641 (PDIP), ICL7642 (PDIP)

TOP VIEW

OUT

-IN

+IN

+IN

-IN

OUT

V+

1

A

-

2

A

A

B

B

B

+

3
4
5

-

+

6
7

OUT

14

-

-IN

13

+

+IN

12

V-

11

+IN

10

-

+

-IN

9

OUT

8

B

B

B

B

B

B

D

D

D

C

C

C

Ω

1

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

http://www.intersil.com or 407-727-9207

| Copyright © Intersil Corporation 1999

ICL7621, ICL7641, ICL7642

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

ICL76XXM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55oC to 125oC

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 operationofthe
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) θJC (oC/W)

SOIC Package . . . . . . . . . . . . . . . . . . . 160 N/A

Metal Can Package . . . . . . . . . . . . . . . 160 75

8 Lead PDIP Package . . . . . . . . . . . . . 120 N/A

14 Lead PDIP Package . . . . . . . . . . . . 80 N/A

Maximum Junction Temperature (Hermetic Packages). . . . . . . .175oC

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

OS

Input Offset Current I

OS

∆VOS/∆TRS≤ 100kΩ - - 10 - - 15 - - 25 - µV/oC

OS

= ±5V, Unless Otherwise Specified

SUPPLY

TEST

CONDITIONS

TEMP.

(oC)

ICL7621A ICL7621B ICL7621D

RS≤ 100kΩ 25 - - 2 - - 5 - - 15 mV

Full

- - 3 - - 7 - - 20 mV

25 - 0.5 30 - 0.5 30 - 0.5 30 pA

UNITSMIN TYP MAX MIN TYP MAX MIN TYP MAX

0 to 70 - - 300 - - 300 - - 300 pA

-55 to 125 - - 800 - 800 - 800 pA

Input Bias Current I

BIAS

25 - 1.0 50 - 1.0 50 - 1.0 50 pA

0 to 70 - - 400 - - 400 - - 400 pA

-55 to 125 - - 4000 - - 4000 - - 4000 pA

Common Mode Voltage

V

CMRIQ

= 100µA25±4.2 - - ±4.2 - - ±4.2 - - V

Range
Output Voltage Swing V

OUTIQ

= 100µA,

RL = 100kΩ

25 ±4.9 - - ±4.9 - - ±4.9 - - V

0 to 70 ±4.8 - - ±4.8 - - ±4.8 - - V

-55 to 125 ±4.5 - - ±4.5 - - ±4.5 - - V

Large Signal
Voltage Gain

A

VOLVO

= ±4.0V,
RL = 100kΩ ,
IQ = 100µA

25 86 102 - 80 102 - 80 102 - dB

0 to 70 80 - - 75 - - 75 - - dB

-55 to 125 74 - - 68 - - 68 - - dB
Unity Gain Bandwidth GBW IQ = 100µA 25 - 0.48 - - 0.48 - - 0.48 - MHz
Input Resistance R
Common Mode

CMRR RS≤ 100kΩ,

Rejection Ratio
Power Supply

PSRR RS≤ 100kΩ,
Rejection Ratio
(V

SUPPLY

= ±8V to ±2V)

Input Referred Noise
Voltage

Input Referred Noise
Current

Supply Current

I

SUPPLY

(Per Amplifier)

IN

IQ = 100µA

IQ = 100µA

e

RS = 100Ω,

N

f = 1kHz

i

RS = 100Ω,

N

f = 1kHz
No Signal, No Load,

IQ = 100µA

25 - 10
25 76 91 - 70 91 - 70 91 - dB

25 80 86 - 80 86 - 80 86 - dB

25 - 100 - - 100 - - 100 - nV/√Hz

25 - 0.01 - - 0.01 - - 0.01 - pA/√Hz

25 - 0.1 0.25 - 0.1 0.25 - 0.1 0.25 mA

12

--1012--1012- Ω

2

ICL7621, ICL7641, ICL7642

Electrical Specifications V

PARAMETER SYMBOL

Channel

VO1/VO2AV = 100 25 - 120 - - 120 - - 120 - dB

= ±5V, Unless Otherwise Specified (Continued)

SUPPLY

TEST

CONDITIONS

TEMP.

(oC)

ICL7621A ICL7621B ICL7621D

UNITSMIN TYP MAX MIN TYP MAX MIN TYP MAX

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

VIN = 8V

P-P

,

25 - 0.16 - - 0.16 - - 0.16 - V/µs

IQ = 100µA,
RL = 100kΩ

Rise Time t

R

VIN = 50mV,

25 - 2 - - 2 - - 2 - µs
CL = 100pF,
IQ = 100µA,
RL = 100kΩ

Overshoot
Factor

OS VIN = 50mV,

CL = 100pF,

25 -10- -10- - 10 - %

IQ = 100µA,
RL = 100kΩ

Electrical Specifications V

PARAMETER SYMBOL

Input Offset Voltage V

= ±5V, Unless Otherwise Specified

SUPPLY

CONDITIONS

OS

RS≤ 100kΩ 25 - - 20 mV

TEST

TEMP.

(oC)

ICL7641E, ICL7642E

UNITSMIN TYP MAX

Full - - 25 mV
Temperature Coefficient of V
Input Offset Current I

∆VOS/∆TRS≤ 100kΩ - - 30 - µV/oC

OS

OS

25 - 0.5 30 pA

0 to 70 - - 300 pA

-55 to 125 - 800 pA

Input Bias Current I

BIAS

25 - 1.0 50 pA

0 to 70 - - 500 pA

-55 to 125 - - 4000 pA

Common Mode Voltage Range V

CMRIQ

= 10µA, ICL7642 25 ±4.4 - - V

IQ = 1mA, ICL7641 25 ±3.7 - - V

Output Voltage Swing V

OUT

ICL7642, IQ = 10µA, RL = 1MΩ 25 ±4.9 - - V

0 to 70 ±4.8 - - V

-55 to 125 ±4.7 - - V

ICL7641, IQ = 1mA, RL = 10kΩ 25 ±4.5 - - V

0 to 70 ±4.3 - - V

-55 to 125 ±4.0 - - V

Large Signal Voltage Gain A

VOL

ICL7642, VO = ±4V, RL = 1MΩ,
IQ=10µA

25 80 104 - dB

0 to 70 75 - - dB

-55 to 125 68 - - dB

ICL7641, VO= ±4V, RL= 10kΩ,IQ= 1mA 25 76 98 - dB

0 to 70 72 - - dB

-55 to 125 68 - - dB

Unity Gain Bandwidth GBW ICL 7642, IQ = 10µA 25 - 0.044 - MHz

ICL 7641, IQ = 1mA 25 - 1.4 - MHz

Input Resistance R

IN

25 - 10

12

- Ω

Common Mode Rejection Ratio CMRR ICL7642, RS≤ 100kΩ, IQ=10µA257096-dB

ICL7641, RS≤ 100kΩ, IQ = 1mA 25 60 87 - dB

Power Supply Rejection Ratio
(V

SUPPLY

= ±8V to ±2V)

PSRR ICL7642, RS≤ 100kΩ, IQ = 10µA258094-dB

ICL7641, RS≤ 100kΩ, IQ = 1mA 25 70 77 - dB

3