TC7652 View Datasheet(PDF) - Microchip Technology
Part Name
Description
Manufacturer
TC7652 Datasheet PDF : 16 Pages
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TC7652
Low Noise, Chopper Stabilized Operational Amplifier
Features
• Low Offset Over Temperature Range: 10µV
• Ultra Low Long Term Drift: 150nV/Month
• Low Temperature Drift: 100nV/°C
• Low DC Input Bias Current: 15pA
• High Gain, CMRR and PSRR: 110dB Min
• Low Input Noise Voltage: 0.2µVp-p (DC to 1Hz)
• Internally Compensated for Unity Gain Operation
• Clamp Circuit for Fast Overload Recovery
Applications
• Instrumentation
• Medical Instrumentation
• Embedded Control
• Temperature Sensor Amplifier
• Strain Gage Amplifier
Device Selection Table
Part Number
TC7652CPA
TC7652CPD
Package
8-Pin Plastic DIP
14-Pin Plastic DIP
Temperature
Range
0°C to +70°C
0°C to +70°C
Package Type
8-Pin DIP
CA 1
8 CB
-Input 2
7
TC7652CPA
VDD
+Input 3
6 Output
VSS 4
5
Output
Clamp
14-Pin DIP
CB 1
14 INT/EXT
CA 2
13
EXT CLK
In
NC 3
12
INT CLK
Out
TC7652CPD
-Input 4
11 VDD
+Input 5
NC 6
VSS 7
10 Output
9
Output
Clamp
8 CRETN
NC = No Internal Connection
(May Be Used As Input Guard)
General Description
The TC7652 is a lower noise version of the TC7650,
sacrificing some input specifications (bias current and
bandwidth) to achieve a 10x reduction in noise. All the
other benefits of the chopper technique are present,
(i.e, freedom from offset adjust, drift and reliability prob-
lems from external trim components). Like the TC7650,
the TC7652 requires only two noncritical external caps
for storing the chopped null potentials. There are no
significant chopping spikes, internal effects or over-
range lockup problems.
© 2002 Microchip Technology Inc.
DS21464B-page 1
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