CS3004
Precision Low-voltage Amplifier
Features
& Description
Low Offset:
– 10
µV
Max.
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).
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
Pin Configurations
2.1 mA Supply Current
Slew rate:
– 0.25 V/µs
Out A 1
-In A 2
+In A 3
V- 4
A
- +
B
+ -
CS3004
(Top View)
8 V+
7 Out B
6 -In B
5 +In B
OUT A
1
-IN A
2
+IN A
3
V-
4
A
– +
Exposed
Thermal
Die Pad
Exposed
Thermal
Die Pad
2
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
B
+ –
8-Lead SOIC
1. Must not be connected.
2. Connect thermal die pad to V-.
QFN-8
1000
200
150
100
100
50
0
10
-50
-100
-150
1
0.01
-200
0.1
1
10
0
1
2
3
4
5
6
7
8
9
10
Frequency (Hz)
Time (sec)
Noise vs. Frequency (Measured)
0.01 Hz to 10 Hz Noise Performance
Cirrus Logic, Inc.
Copyright
©
Cirrus Logic, Inc. 2007
(All Rights Reserved)
AUG ‘07
DS719F1
CIRRUS [ CIRRUS LOGIC ]
