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ICL7650S

2MHz, Super Chopper-Stabilized Operational Amplifier

Renesas Electronics 

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ICL7650S

2MHz, Super Chopper-Stabilized Operational Amplifier

FN2920

Rev 10.00

April 12, 2007

The ICL7650S Super Chopper-Stabilized Amplifier offers

exceptionally low input offset voltage and is extremely stable

with respect to time and temperature. It is a direct

replacement for the industry-standard ICL7650 offering

improved input offset voltage, lower input offset voltage

temperature coefficient, reduced input bias current, and

wider common mode voltage range. All improvements are

highlighted in bold italics in the Electrical Characteristics

section. Critical parameters are guaranteed over the

entire commercial temperature range.

Intersil’s unique CMOS chopper-stabilized amplifier circuitry

is user-transparent, virtually eliminating the traditional

chopper amplifier problems of intermodulation effects,

chopping spikes, and overrange lockup.

The chopper amplifier achieves its low offset by comparing

the inverting and non-inverting input voltages in a nulling

amplifier, nulled by alternate clock phases. Two external

capacitors are required to store the correcting potentials on

the two amplifier nulling inputs; these are the only external

components necessary.

The clock oscillator and all the other control circuitry is

entirely self-contained. However the 14 lead version includes

a provision for the use of an external clock, if required for a

particular application. In addition, the ICL7650S is internally

compensated for unity-gain operation.

Features

• Guaranteed Max Input Offset Voltage for All Temperature

Ranges

• Low Long-Term and Temperature Drifts of Input Offset

Voltage

• Guaranteed Max Input Bias Current . . . . . . . . . . . . .10pA

• Extremely Wide Common Mode

Voltage Range. . . . . . . . . . . . . . . . . . . . . . . +3.5V to -5V

• Reduced Supply Current . . . . . . . . . . . . . . . . . . . . . . 2mA

• Guaranteed Minimum Output Source/Sink Current

• Extremely High Gain . . . . . . . . . . . . . . . . . . . . . . . .150dB

• Extremely High CMRR and PSRR . . . . . . . . . . . . . .140dB

• High Slew Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5V/s

• Wide Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2MHz

• Unity-Gain Compensated

• Clamp Circuit to Avoid Overload Recovery Problems and

Allow Comparator Use

• Extremely Low Chopping Spikes at Input and Output

• Improved, Direct Replacement for Industry-Standard

ICL7650 and other Second-Source Parts

• Pb-Free Plus Anneal Available (RoHS Compliant)

Ordering Information

PART

NUMBER

PART

MARKING

TEMP. RANGE (°C)

PACKAGE

PKG. DWG. #

ICL7650SCBA-1

7650S CBA-1

0 to +70

8 Ld SOIC

M8.15

ICL7650SCBA-1T

7650S CBA-1

0 to +70

8 Ld SOIC (Tape and Reel) M8.15

ICL7650SCBA-1Z (Note)

7650S CBA-1Z

0 to +70

8 Ld SOIC

M8.15

ICL7650SCBA-1ZT (Note)

7650S CBA-1Z

0 to +70

8 Ld SOIC (Tape and Reel) M8.15

ICL7650SCPA-1

7650S CPA-1

0 to +70

8 Ld PDIP

E8.3

ICL7650SCPA-1Z (Note)

7650S CPA-1Z

0 to +70

8 Ld PDIP* (Pb-free)

E8.3

ICL7650SCPD

ICL7650SCPD

0 to +70

14 Ld PDIP

E14.3

ICL7650SCPDZ

7650SCPDZ

0 to +70

14 Ld PDIP* (Pb-free)

E14.3

*Pb-free PDIPs can be used for through hole wave solder processing only. They are not intended for use in Reflow solder processing applications.

NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin

plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are

MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.

FN2920 Rev 10.00

April 12, 2007

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