CS3011_09 Datasheet, PDF (1/18 Pages) Cirrus Logic – Precision Low-voltage Amplifier; DC to 1 kHz

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
 Open-loop Voltage Gain
– 300 dB Typ
– 200 dB Min
 Rail-to-rail Output Swing
 Slew Rate: 2 V/μs
Applications
 Thermocouple/Thermopile Amplifiers
 Load Cell and Bridge Transducer Amplifiers
 Precision Instrumentation
 Battery-powered Systems
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).
Pin Configurations
CS3011
CS3012
PDWN 1
-In ²
-
+In 3
+
V- 4
8 NC
Out A 1
7 V+
-In A 2
6 Output +In A 3
5 NC
V- ₄
-A+
+B-
8 _V+
7 Out B
6 -In B
5 +In B
8-lead SOIC
8-lead SOIC
Noise vs. Frequency (Measured)
100
10
1
0.001
0.010
0.1
1
10
Frequency (Hz)
Dexter Research
Thermopile ST60
R1
100
CS3011
R2
64.9k
C1
0.015μF
http://www.cirrus.com
Copyright  Cirrus Logic, Inc. 2009
(All Rights Reserved)
JUL ‘09
DS597F6