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Intersil Electronic Components Datasheet

ICL7650S Datasheet

Super Chopper-Stabilized Operational Amplifier

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ICL7650S pdf
®
Data Sheet
November 2002
ICL7650S
FN2920.6
2MHz, Super Chopper-Stabilized
Operational Amplifier
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/µs
• 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
Ordering Information
PART NUMBER
ICL7650SCPA-1
ICL7650SCPD
ICL7650SCBA-1
TEMP.
RANGE
(oC)
PACKAGE
0 to 70 8 Ld PDIP
0 to 70 14 Ld PDIP
0 to 70 8 Ld SOIC
PKG.
NO.
E8.3
E14.3
M8.15
Pinouts
ICL7650S (PDIP, SOIC)
TOP VIEW
ICL7650S (PDIP)
TOP VIEW
CEXTA 1
-IN 2
+IN 3
V- 4
-
+
8 CEXTB
7 V+
6 OUTPUT
5 CRETN
CEXTB 1
CEXTA 2
NC (GUARD) 3
-IN 4
+IN 5
NC (GUARD) 6
V- 7
-
+
14 INT/EXT
13 EXT CLK IN
12 INT CLK OUT
11 V+
10 OUTPUT
9 OUT CLAMP
8 CRETN
1 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 registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2002. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.


Intersil Electronic Components Datasheet

ICL7650S Datasheet

Super Chopper-Stabilized Operational Amplifier

No Preview Available !

ICL7650S pdf
Functional Diagram
ICL7650S
INT/EXT
EXT CLK IN
CLK OUT
+IN
-IN
A
A
-
NULL
+
OSC.
A
A
B
C
INTERNAL
BIAS
+
MAIN
-
C
B
P
N
CAP RETURN
CEXTA
CEXTB
OUTPUT
CLAMP
EXT CLK IN
A = CLK OUT
A
B
C
2


Part Number ICL7650S
Description Super Chopper-Stabilized Operational Amplifier
Maker Intersil Corporation
Total Page 13 Pages
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