ICL7650S
TM
Data Sheet
April 2000
File Number 2920.5
2MHz, Super Chopper-Stabilized
Operational Amplifier
Features
• Guaranteed Max Input Offset Voltage for All Temperature
Ranges
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
• Low Long-Term and Temperature Drifts of Input Offset
Voltage
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.
• 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/µs
• Wide Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2MHz
• Unity-Gain Compensated
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.
• 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
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.
Ordering Information
TEMP.
RANGE
( C)
PKG.
NO.
o
PART NUMBER
ICL7650SCPA-1
ICL7650SCPD
PACKAGE
8 Ld PDIP
0 to 70
0 to 70
0 to 70
0 to 70
E8.3
14 Ld PDIP
E14.3
M8.15
T8.C
ICL7650SCBA-1
ICL7650SCTV-1
8 Ld SOIC
8 Pin Metal Can
Pinouts
ICL7650S (PDIP, SOIC)
ICL7650S (METAL CAN)
TOP VIEW
ICL7650S (PDIP)
TOP VIEW
TOP VIEW
C
EXTB
8
1
2
3
4
8
7
6
5
C
1
14 INT/EXT
C
C
EXTB
EXTB
EXTA
-IN
C
2
3
4
5
6
7
13 EXT CLK IN
12 INT CLK OUT
11 V+
V+
EXTA
C
1
3
7
5
V+/CASE
-
EXTA
+
NC (GUARD)
+IN
V-
OUTPUT
-
2
6
OUTPUT
-IN
-IN
C
+
-
RETN
+
+IN
NC (GUARD)
V-
10 OUTPUT
C
+IN
RETN
9
8
OUT CLAMP
4
V-
C
RETN
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil and Design is a trademark of Intersil Corporation. | Copyright © Intersil Corporation 2000
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