CS3011
CS3012
Precision Low Voltage Amplifier; DC to 1 kHz
Features
Low Offset: 10
µV
Max
Low Drift: 0.05
µV/°C
Max
Low Noise
– 12 nV/√Hz @ 0.5 Hz
– 0.1 to 10 Hz = 250 nVp-p
– 1/f corner @ 0.08 Hz
Description
The CS3011 single amplifier and the CS3012 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).
Open-Loop Voltage Gain
– 1000 Trillion Typ
– 10 Billion Min
Rail-to-Rail Output Swing
Slew rate: 2 V/µs
Pin Configurations
CS3011
PWDN
-In
1
2
3
4
-
+
8 NC
7 V+
6 Output
5 NC
Out A 1
-In A 2
+In A 3
V- 4
A
- +
B
+ -
CS3012
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
+In
V-
8-lead SOIC
8-lead SOIC
Noise vs. Frequency (Measured)
100
nV/√Hz
CS3011
Dexter
Research
Dexter
Research
Thermopile ST60
Thermopile ST60
R2
64.9k
10
1
0.001
R1
100
C1
0.015µF
0.010
0.1
Frequency (Hz)
1
10
Thermopile Amplifier with a Gain of 650 V/V
Cirrus Logic, Inc.
http://www.cirrus.com
Copyright Cirrus Logic, Inc. 2003
(All Rights Reserved)
JUN ‘03
DS597F1
1
CIRRUS [ CIRRUS LOGIC ]
