The AD8217 is a high‑voltage, high‑resolution current shunt amplifier featuring a fixed gain of 20 V/V, low offset drift (±100 nV/°C) and excellent common‑mode rejection from 4.5 V to 80 V. It includes an internal LDO that powers the device directly from the common‑mode voltage, eliminating the need for an external supply.
The device is supplied in an 8‑lead MSOP package and is specified for operation from –40 °C to +125 °C. It is intended for high‑side current sensing in telecom, power‑management and motor‑control applications, providing a buffered, ground‑referenced output that can interface directly with ADCs or other converters.
| Gain | 20 V/V |
|---|---|
| Gain Accuracy | ±0.1 % |
| Gain Temperature Coefficient | ±0.35 % over temperature |
| Offset Drift | ±100 nV/°C |
| Input Bias Current | 500 µA typ (800 µA max) |
| Common‑Mode Input Voltage Range | 4.5 V to 80 V |
| CMRR | 90 dB to 100 dB |
| Output Voltage Range (Low) | 0.01 V |
| Output Voltage Range (High) | 5 V |
| Output Impedance | 2 Ω |
| Small‑Signal Bandwidth | 500 kHz |
| Slew Rate | 1 V/µs |
| Power‑Supply Operating Range | 4.5 V to 80 V |
| Quiescent Current | 800 µA |
| PSRR | 90 dB to 110 dB |
| Operating Temperature Range | –40 °C to +125 °C |
| Package | 8‑lead MSOP (RM‑8) |
| Internal LDO | Included |
The AD8217 has a fixed gain of 20 V/V.
The device accepts common‑mode voltages from 4.5 V up to 80 V.
Yes, it includes an internal LDO that powers the device from the common‑mode voltage.
The AD8217 is supplied in an 8‑lead MSOP (RM‑8) package.