CS3011
CS3012
Precision Low-voltage Amplifier; DC to 1 kHz
Features
& Description
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
– 300 dB Typ
– 200 dB Min
Rail-to-rail Output Swing
Slew Rate: 2 V/µs
Pin Configurations
CS3011
PDWN 1
-In
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
Thermopile ST60
10
R2
64.9k
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
Copyright
©
Cirrus Logic, Inc. 2007
(All Rights Reserved)
NOV ‘07
DS597F5
CIRRUS [ CIRRUS LOGIC ]
