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Description

The AD8426 is a dual-channel, low cost, wide supply range instrumentation amplifier that requires only one external resistor to set any gain from 1 to 1000. The device is designed to work with a variety of signal voltages. A wide input range and rail-to-rail output allow the signal to make full use of the supply rails. Because the input range can also go below the negative supply, small signals near ground can be amplified without requiring dual supplies. The IC operates on supplies ranging from ±1.35 V to ±18 V for dual supplies and 2.2 V to 36 V for a single supply.

The robust inputs are designed to connect to real world sensors. In addition to its wide operating range, the AD8426 can handle voltages beyond the rails. For example, with a ±5 V supply, the part is guaranteed to withstand ±35 V at the input with no damage. Minimum and maximum input bias currents are specified to facilitate open-wire detection.

Features

1. LFCSP package has no metal pad
2. More routing room
3. No current leakage to pad
4. Gain set with 1 external resistor
5. Gain range: 1 to 1000
6. Input voltage goes below ground
7. Inputs protected beyond supplies
8. Very wide power supply range
9. Single supply: 2.2 V to 36 V
10. Typical supply current (per amplifier): 350 μA
11. Specified temperature range: −40°C to +125°C

Applications : 

1. Industrial process controls
2. Bridge amplifiers
3. Medical instrumentation
4. Portable data acquisition
5. Multichannel systems