The ADM4073 is a low cost, compact, high side current sense amplifier
The ADM4073 is a low‑cost, high‑side current‑sense amplifier designed for portable and battery‑powered applications such as cell phones, notebooks, and automotive power‑management systems. It offers three fixed‑gain versions (20 V/V, 50 V/V, 100 V/V) that eliminate the need for external gain‑setting resistors and provides a wide 2 V‑to‑28 V common‑mode range independent of supply voltage.
Key specifications include a supply current of 0.5‑1.2 mA, a bandwidth of up to 1.8 MHz, and operation over a temperature range of –40 °C to +125 °C. The device is supplied in a 6‑lead SOT‑23 package and is pin‑compatible with the MAX4073.
| Gain (ADM4073T) | 20 V/V |
|---|---|
| Gain (ADM4073F) | 50 V/V |
| Gain (ADM4073H) | 100 V/V |
| Supply Current | 0.5‑1.2 mA |
| Bandwidth | 1.8 MHz |
| Operating Voltage Range | 3 V‑28 V |
| Common‑Mode Input Range | 2 V‑28 V |
The device operates from –40 °C to +125 °C.
It is supplied in a 6‑lead SOT‑23 package.
The amplifier is offered with gains of 20 V/V (ADM4073T), 50 V/V (ADM4073F), and 100 V/V (ADM4073H).
Typical supply current is about 500 µA.