Datasheet Analog Devices AD8428

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 FUNCTIONAL BLOCK DIAGRAM
–IN
3kΩ The AD8428 is an ultralow noise instrumentation amplifier …

FEATURES FUNCTIONAL BLOCK DIAGRAM Fixed gain of 2000
Access to internal nodes provides flexibility
Low noise: 1.5 nV/√Hz voltage noise
High accuracy dc performance
Gain drift: 10 ppm/°C maximum
Input offset voltage, average temperature coefficient:
1 μV/°C maximum
Total gain error: 0.2% maximum
CMRR, dc to 60 Hz: 130 dB minimum
Excellent ac specifications
−3 dB small signal bandwidth: 3.5 MHz
Slew rate: 40 V/μs minimum
Power supply operating range: ±4 V to ±18 V
ESD protection: 5000 V (HBM)
Temperature range for specified performance: −40°C to +85°C
Operational up to 125°C
Known Good Die (KGD): these die are fully guaranteed to
data sheet specifications. +VS –FIL –IN
3kΩ 6kΩ 6kΩ 120kΩ OUT 30.15Ω
3kΩ 6kΩ 6kΩ 120kΩ REF +IN AD8428-KGD
–VS +FIL 20263-001 Data Sheet Low Noise, Low Gain Drift, G = 2000,
Instrumentation Amplifier
AD8428-KGD Figure 1. APPLICATIONS …