CS3011_07 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
z Low Offset: 10 µV Max
z Low Drift: 0.05 µV/°C Max
z Low Noise
– 12 nV/√Hz @ 0.5 Hz
– 0.1 to 10 Hz = 250 nVp-p
– 1/f corner @ 0.08 Hz
z Open-loop Voltage Gain
– 300 dB Typ
– 200 dB Min
z Rail-to-rail Output Swing
z Slew Rate: 2 V/µs
Applications
z Thermocouple/Thermopile Amplifiers
z Load Cell and Bridge Transducer Amplifiers
z Precision Instrumentation
z 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
CS3011
R2
64.9k
R1
C1
100
0.015µF
Thermopile Amplifier with a Gain of 650 V/V
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 2007
(All Rights Reserved)
NOV ‘07
DS597F5