Cirrus Logic CS3004 - Manual

Copyright  Cirrus Logic, Inc. 2009
(All Rights Reserved)
Cirrus Logic, Inc.
http://www.cirrus.com
CS3004
Precision Low-voltage Amplifier
Features & Description
 Low Offset:
– 10 μV Max.
 Low Drift:
– 0.05 μV/°C Max.
 Low Noise:
– 17 nV/ √Hz
 Open-loop Voltage Gain:
– 150 dB Typ.
 Rail-to-Rail Inputs
 Rail-to-Rail Output Swing
– to within 10 mV of supply voltage
 2.1 mA Supply Current
 Slew rate:
– 0.25 V/ μs
Applications
 Thermocouple/Thermopile Amplifiers
 Load Cell and Bridge Transducer Amplifiers
 Precision Instrumentation
 Battery-powered Systems
Description
The CS3004 dual amplifier is designed for precision am-
plification of low-level signals. These amplifiers achieve
excellent offset stability, high open loop gain, and low
noise. The devices also exhibit excellent CMRR and
PSRR. The common mode input range includes the sup-
ply rails. The amplifiers operate with any supply voltage
from 2.7 V to 5 V (±1.35 V to ±2.50 V).
Pin Configuration
CS3004
8-Lead SOIC
(Top View)
Out A
-In A
+In A
V-
V+
Out B
-In B
+In B
A
B
-
-
+
+
1
2
3
4
8
7
6
5
1
10
100
1000
0.01 0.1 1 10
Frequency (Hz)
-200
-150
-100
-50
0
50
100
150
200
0 1 2 3 4 5 6 7 8 9 10
Time (sec)
Noise vs. Frequency (Measured) 0.01 Hz to 10 Hz Noise Performance
JUL ‘09
DS719F2