The ADA4841-1/ADA4841-2 is a low-power, low-noise, low-distortion, rail-to-rail output amplifier. It features low power consumption (1.1 mA/amp), low wideband noise (2.1 nV/√Hz, 1.4 pA/√Hz), low 1/f noise (7 nV/√Hz @ 10 Hz, 13 pA/√Hz @ 10 Hz), low distortion (-105 dBc @ 100 kHz, VO = 2 V p-p), high speed (80 MHz, -3 dB bandwidth (G = +1), 12 V/μs slew rate, 175 ns settling time to 0.1%), low offset voltage (0.3 mV max), rail-to-rail output, power down, and wide supply range (2.7 V to 12 V).
The ADA4841-1 and ADA4841-2 are unity gain stable, low noise, and low distortion amplifiers featuring a rail-to-rail output. These devices are designed for low power consumption with a quiescent current of 1.5 mA maximum, making them suitable for battery-powered instrumentation and portable applications. They offer excellent performance with a wide supply range of 2.7 V to 12 V and can drive up to 20 pF of capacitive load with minimal peaking.
| Quiescent Current | 1.5 mA maximum |
|---|---|
| Wideband Voltage Noise | 2.1 nV/VHz |
| Current Noise | 1.4 pA/VHz |
| 1/f Noise | 7 nV/VHz @ 10 Hz |
| Harmonic Distortion | -105 dBc @ 100 kHz |
| Bandwidth | 80 MHz |
| Slew Rate | 12 V/us |
| Settling Time | 175 ns to 0.1% |
| Offset Voltage | 0.3 mV max |
| Supply Range | 2.7 V to 12 V |
| Capacitive Load Drive | 20 pF |
| Operating Temperature | -40°C to +125°C |
The amplifiers have a quiescent current of 1.5 mA maximum.
The wide supply range operates from 2.7 V to 12 V.
Yes, they can drive up to 20 pF of capacitive load with minimal peaking.
Yes, they are ideal for driving 16-bit to 18-bit ADCs, specifically the AD7685/AD7686.