ADA4941-1 is a single-supply, 18-bit ADC driver with excellent linearity and low noise. The output is a differential voltage and is suitable for single-supply data acquisition systems, instrumentation, process control, battery-powered systems and medical instrumentation.
The ADA4941-1 is a single‑supply, differential 18‑bit ADC driver designed for low‑power, low‑noise applications. It provides a single‑ended‑to‑differential conversion with a user‑adjustable gain of 2, rail‑to‑rail output, high input impedance, and a wide supply range of 2.7 V to 12 V.
Typical applications include single‑supply data‑acquisition systems, instrumentation, process control, battery‑powered devices, and medical instrumentation. The device is offered in an 8‑lead SOIC and a space‑saving 3 mm × 3 mm LFCSP package.
| Supply Voltage Range | 2.7 V to 12 V |
|---|---|
| Quiescent Current | 2.2 mA (typical at 3 V) |
| Input Resistance | 24 MΩ |
| Output Voltage Swing (G=4) | +2.90 V to +2.95 V |
| -3 dB Bandwidth (V₀=0.1 V p‑p) | 30 MHz (typical) |
| Settling Time (0.005 % for 2 V step) | 300 ns |
| Voltage Noise (100 kHz) | 10.2 nV/√Hz |
The device operates from 2.7 V up to 12 V.
Typical quiescent current is 2.2 mA at a 3 V supply.
The input resistance is 24 MΩ.