The document describes the features and characteristics of the AD8224 Rev. B instrumentation amplifier, including dual-channel, JFET input, rail-to-rail input, and precision.
The document describes the AD8224, the first single-supply, JFET input instrumentation amplifier available in a space-saving 16-lead LFCSP package. It is designed for high-performance portable instrumentation, offering double channel density with lower cost per channel compared to typical single instrumentation amplifiers.
Key features include rail-to-rail output capability, operation on a single +5 V supply or dual supplies up to ±18 V, and low input bias currents of 10 pA maximum (B Grade). The device supports gain settings from 1 to 1000 with a single resistor.
| Input Bias Current (Max) | 10 pA |
|---|---|
| Input Offset Current (Max) | 0.6 pA |
| Small Signal Bandwidth (G=1) | 1.5 MHz |
| Input Voltage Noise Density | 14 nV/VHz |
| Slew Rate | 2 V/us |
| Quiescent Current per Amplifier | 750 pA |
| Gain Range | 1 to 1000 |
The maximum input bias current is 10 pA for B Grade devices.
It supports a single supply of 4.5 V to 36 V or dual supplies from +2.25 V to +18 V.