The MAX9943/MAX9944 family of high-voltage amplifiers offers precision, low drift, and low-power consumption
The MAX9943 (single) and MAX9944 (dual) are high‑voltage operational amplifiers designed for sensor signal conditioning, industrial instrumentation, and loop‑powered systems. They operate from +3 V to +19 V dual supplies or +6 V to +38 V single supply and are rated for -40 °C to +125 °C.
Key features include a 2.4 MHz gain‑bandwidth product, 550 µA supply current per amplifier, 20 mA output current, low input offset voltage (≤100 µV) and drift (0.4 µV/°C), and rail‑to‑rail output capability. The datasheet details absolute maximum ratings, electrical characteristics, pin configurations, and layout recommendations.
| Supply Voltage Range | +3 V to +19 V dual, +6 V to +38 V single |
|---|---|
| Supply Current | 550 µA per amplifier |
| Output Current | 20 mA |
| Input Offset Voltage | ≤100 µV (max) |
| Input Offset Voltage Drift | 0.4 µV/°C |
It operates from +3 V to +19 V with dual supplies or from +6 V to +38 V with a single supply.
Each amplifier draws about 550 µA of supply current.
The devices can source up to 20 mA of output current.