CS3001_08 Datasheet, PDF (1/16 Pages) Cirrus Logic – Precision Low-voltage Amplifier; DC to 2 kHz

CS3001
CS3002
Precision Low-voltage Amplifier; DC to 2 kHz
Features & Description
‰Low Offset: 10 µV Max
‰Low Drift: 0.05 µV/°C Max
‰Low Noise
– 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
Applications
‰Thermocouple/Thermopile Amplifiers
‰Load Cell and Bridge Transducer Amplifiers
‰Precision Instrumentation
‰Battery-powered Systems
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).
Pin Configurations
CS3001
CS3002
PWDN 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
Dexter Research
Thermopile 1M
CS3001
R2
64.9k
1
0.001
0.01
0.1
1
10
Frequency (Hz)
R1
C1
100
0.015µF
Thermopile Amplifier with a Gain of 650 V/V
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 2008
(All Rights Reserved)
OCT ‘08
DS490F8