Datasheet

 2001-2012 Microchip Technology Inc. DS21464C-page 1
Features
• Low Offset Over Temperature Range: 10V
• 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: 0.2V
p-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
Package Type
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.
Part Number Package
Temperature
Range
TC7652CPA 8-Pin Plastic DIP 0°C to +70°C
TC7652CPD 14-Pin Plastic DIP 0°C to +70°C
1
2
3
4
8
7
6
5
C
A
Output
TC7652CPA
-Input
+Input
V
SS
V
DD
C
B
Output
Clamp
V
SS
V
DD
1
2
3
4
5
6
7
14
13
12
11
10
9
8
NC
NC = No Internal Connection
(May Be Used As Input Guard)
INT/EXT
EXT CLK
In
INT CLK
Out
Output
Output
Clamp
C
RETN
-Input
+Input
NC
TC7652CPD
C
B
C
A
8-Pin DIP
14-Pin DIP
TC7652
Low Noise, Chopper Stabilized Operational Amplifier