ADA4841-2YRZ-R7

The ADA4841-1/ADA4841-2 are unity gain stable, low noise and distortion, rail-to-rail output amplifiers that have a quiescent current of 1.5 mA maximum. In spite of their low power consumption, these amplifiers offer low wideband voltage noise performance of 2.1 nV/√Hz and 1.4 pA/√Hz current noise, along with excellent spurious-free dynamic range (SFDR) of -105 dBc at 100 kHz. To maintain a low noise environment at lower frequencies, the amplifiers have low 1/f noise of 7 nV/√Hz and 13 pA/√Hz at 10 Hz. The ADA4841-1/ADA4841-2 output can swing to less than 50 mV of either rail. The input common-mode voltage range extends down to the negative supply. The ADA4841-1/ ADA4841-2 can drive up to 10 pF of capacitive load with minimal peaking. The ADA4841-1/ADA4841-2 provide the performance required to efficiently support emerging 16-bit to 18-bit ADCs and are ideal for portable instrumentation, high channel count, industrial measurement, and medical applications. The ADA4841-1/ ADA4841-2 are ideally suited to drive the 16-bit PulSAR ADCs. The ADA4841-1/ADA4841-2 packages feature RoHS compliant lead finishes. The amplifiers are rated to work over the industrial temperature range -40°C to +125°C.

Applications

• Low power, low noise signal processing
• Battery-powered instrumentation
• 16-bit PulSAR ADC drivers

Key features

• Low power: 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 0.7%
• Low offset voltage: 0.3 mV maximum
• Rail-to-rail output
• Power down
• Wide supply range: 2.7 V to 12 V