CS3001
CS3002
Precision Low-voltage Amplifier; DC to 2 kHz
Features
& Description
Offset: 10
μV
Max
Low Drift: 0.05
μV/°C
Max
Low Noise
Low
Description
The CS3001 single amplifier and the CS3002 dual am-
plifier are designed for precision amplification of low-
level signals and are ideally suited to applications that
require very high closed-loop gains. These amplifiers
achieve excellent offset stability, super-high open-loop
gain, and low noise over time and temperature. The de-
vices also exhibit excellent CMRR and PSRR. The
common mode input range includes the negative supply
rail. The amplifiers operate with any total supply voltage
from 2.7 V to 6.7 V (±1.35 V to ±3.35 V).
– 6 nV/√Hz @ 0.5 Hz
– 0.1 to 10 Hz = 125 nVp-p
– 1/f corner @ 0.08 Hz
Open-loop
Voltage Gain
– 300 dB Typical
– 200 dB Minimum
Rail-to-rail
Output Swing
Slew Rate: 5 V/μs
Pin Configurations
CS3001
PWDN
-In
+In
V-
1
2
3
4
-
+
8
7
6
5
NC
V+
Output
NC
Out A
1
-In A
2
+In A
3
V-
4
A
- +
B
+ -
CS3002
8
V+
7
Out B
6
-In B
5
+In B
Applications
Thermocouple/Thermopile
Amplifiers
Load Cell and Bridge Transducer Amplifiers
Precision Instrumentation
Battery-powered Systems
8-lead SOIC
8-lead SOIC
Noise vs. Frequency (Measured)
100
CS3001
Dexter Research
Thermopile 1M
R2
64.9k
nV/√Hz
10
1
0.001
R1
100
C1
0.015μF
0.01
0.1
Frequency (Hz)
1
10
Thermopile Amplifier with a Gain of 650 V/V
Copyright
Cirrus Logic, Inc. 2009
(All Rights Reserved)
JUL ‘09
DS490F9
CIRRUS [ CIRRUS LOGIC ]
