AD8428 Datenblatt PDF ( Pinout, schematic )

Teilenummer : AD8428

Function : Low Noise, Low Gain Drift, G = 2000 Instrumentation Amplifier

Hersteller : Analog Devices

Pinout :

AD8428 datenblatt

Beschreibung :

The AD8428 is an ultralow noise instrumentation amplifier designed to accurately measure tiny, high speed signals. It delivers industry-leading gain accuracy, noise, and bandwidth. All gain setting resistors for the AD8428are internal to the part and are precisely matched. Care is taken in both the chip pinout and layout. This results in excellent gain drift and quick settling to the final gain value after the part is powered on. The high CMRR of the AD8428prevents unwanted signals
from corrupting the signal of interest. The pinout of the AD8428 is designed to avoid parasitic capacitance mismatches that can degrade CMRR at high frequencies. The AD8428is one of the fastest instrumentation amplifiers available. The circuit architectureis designed for high bandwidth
at high gain. The AD8428 uses a current feedback topology for the initial preamplifier gain stage of 200, followed by a difference amplifier stage of 10. This architecture results in a 3.5 MHz bandwidth at a gain of 2000 for an equivalent gain bandwidth product of 7 GHz.

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

Sensor interface
Medical instrumentation
Patient monitoring

Vs= ±15 V, VREF= 0 V, TA= 25°C, G = 2000, RL= 10 kΩ, unless otherwise noted.

Datenblatt PDF Download

AD8428 pdf

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