The AD8219 is a high voltage, high resolution, unidirectional current shunt amplifier. It features a set gain of 60 V/V, with a maximum ±0.3% gain error over the entire temperature range. The buffered output voltage directly integrates with the current shunt resistor to provide a high-precision unidirectional current measurement.
The AD8219 is a high‑voltage, high‑resolution current shunt amplifier featuring a fixed gain of 60 V/V, a wide common‑mode voltage range of 4 V to 80 V, and operation across –40 °C to +125 °C. It includes a zero‑drift core that provides typical offset drift of ±100 nV/°C and a buffered output that can directly interface with converters.
Typical applications include high‑side current sensing for telecom (48 V), power‑management circuits, base‑station bias control, and motor‑control systems. The device is supplied in an 8‑lead MSOP package and offers robust ESD protection, wide supply range (4 V‑80 V), and low quiescent current.
| Gain | 60 V/V |
|---|---|
| Voltage Offset | ±200 μV |
| Offset Drift | ±100 nV/°C |
| Input Bias Current | 130 μA (typ) |
| Common‑Mode Input Voltage Range | 4 V to 80 V |
| Output Voltage Range (Low) | 0.01 V |
| Power‑Supply Operating Range | 4 V to 80 V |
| Quiescent Current (over temperature) | 800 μA |
The AD8219 has a fixed gain of 60 V/V.
It supports a common‑mode voltage range from 4 V to 80 V.
The AD8219 is offered in an 8‑lead MSOP (Mini Small Outline Package).
The typical offset drift is ±100 nV/°C.