ICL7650S
TM
Data Sheet
April 2000
File Number
2920.5
2MHz, Super Chopper-Stabilized
Operational Ampli鏗乪r
The ICL7650S Super Chopper-Stabilized Ampli鏗乪r 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 coef鏗乧ient,
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鈥檚 unique CMOS chopper-stabilized ampli鏗乪r circuitry
is user-transparent, virtually eliminating the traditional
chopper ampli鏗乪r problems of intermodulation effects,
chopping spikes, and overrange lockup.
The chopper ampli鏗乪r achieves its low offset by comparing
the inverting and non-inverting input voltages in a nulling
ampli鏗乪r, nulled by alternate clock phases. Two external
capacitors are required to store the correcting potentials on
the two ampli鏗乪r 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
鈥?/div>
Guaranteed
Max Input Offset Voltage for
All
Temperature
Ranges
鈥?Low Long-Term and Temperature Drifts of Input Offset
Voltage
鈥?/div>
Guaranteed
Max Input Bias Current. . . . . . . . . . . . . .10pA
鈥?/div>
Extremely Wide
Common Mode
Voltage Range . . . . . . . . . . . . . . . . . . . . . . . +3.5V to -5V
鈥?/div>
Reduced
Supply Current . . . . . . . . . . . . . . . . . . . . . . 2mA
鈥?/div>
Guaranteed
Minimum Output Source/Sink Current
鈥?Extremely High Gain . . . . . . . . . . . . . . . . . . . . . . . .150dB
鈥?Extremely High CMRR and PSRR . . . . . . . . . . . . . .140dB
鈥?High Slew Rate. . . . . . . . . . . . . . . . . . . . . . . . . . . .2.5V/碌s
鈥?Wide Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2MHz
鈥?Unity-Gain Compensated
鈥?Clamp Circuit to Avoid Overload Recovery Problems and
Allow Comparator Use
鈥?Extremely Low Chopping Spikes at Input and Output
鈥?/div>
Improved, Direct
Replacement for Industry-Standard
ICL7650 and other Second-Source Parts
Ordering Information
PART NUMBER
ICL7650SCPA-1
ICL7650SCPD
ICL7650SCBA-1
ICL7650SCTV-1
TEMP.
RANGE
(
o
C)
0 to 70
0 to 70
0 to 70
0 to 70
PACKAGE
8 Ld PDIP
14 Ld PDIP
8 Ld SOIC
8 Pin Metal Can
PKG.
NO.
E8.3
E14.3
M8.15
T8.C
Pinouts
ICL7650S (PDIP, SOIC)
TOP VIEW
C
EXTA
-IN
+IN
V-
1
2
3
4
8
C
EXTB
V+
OUTPUT
C
RETN
-IN
2
C
EXTA
1
ICL7650S (METAL CAN)
TOP VIEW
C
EXTB
8
7
V+/CASE
ICL7650S (PDIP)
TOP VIEW
C
EXTB
1
C
EXTA
2
NC (GUARD) 3
14 INT/EXT
13 EXT CLK IN
12 INT CLK OUT
+
-
7
6
5
-
+
3
4
V-
5
6
OUTPUT
-IN 4
+IN 5
-
11 V+
10 OUTPUT
9 OUT CLAMP
8 C
RETN
+
+IN
C
RETN
NC (GUARD) 6
V- 7
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 trademark of Intersil Corporation.
|
Copyright
漏
Intersil Corporation 2000
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