Click to expand full text
Data Sheet
FEATURES
Fixed gain of 2000 Access to internal nodes provides flexibility Low noise: 1.5 nV/√Hz input voltage noise High accuracy dc performance
Gain drift: 5 ppm/°C Offset drift: 0.3 μV/°C Gain accuracy: 0.05% CMRR: 140 dB min Excellent ac specifications Bandwidth: 3.5 MHz Slew rate: 40 V/μs Power supply range: ±4 V to ±18 V 8-lead SOIC package ESD protection: 5000 V (HBM) Temperature range for specified performance: −40°C to +85°C Operational up to 125°C
APPLICATIONS
Sensor interface Medical instrumentation Patient monitoring
Low Noise, Low Gain Drift, G = 2000 Instrumentation Amplifier AD8428
FUNCTIONAL BLOCK DIAGRAM
+VS –FIL
–IN
3kΩ 6kΩ
6kΩ
120kΩ
30.15Ω
OUT
09731-001
3kΩ 6kΩ
6kΩ
120kΩ
REF
+IN
AD8428
–VS +FIL
Figure 1.
Table 1.
AD8428 Datasheet
