ADA4637-1BRZ

The ADA4627-1/ADA4637-1 are wide bandwidth precision amplifiers featuring low noise, very low offset, drift, and bias current. The devices operate from ±5 V to ±15 V dual supply. The ADA4627-1/ADA4637-1 provide benefits previously found in few amplifiers. These amplifiers combine the best specifications of precision dc and high speed ac op amps. The ADA4637-1 is a decompensated version of the ADA4627-1 and is stable at a noise gain of 5 or greater. With a typical offset voltage of only 70 μV, drift of less than 1 μV/°C, and noise of only 0.86 μV p-p (0.1 Hz to 10 Hz), the ADA4627-1/ADA4637-1 are suited for applications where error sources cannot be tolerated. The ADA4627-1/ADA4637-1 are specified for both the industrial temperature range of -25°C to +85°C and the extended industrial temperature range of -40°C to +125°C. The ADA4627-1/ADA4637-1 are available in tiny 8-lead LFCSP and 8-lead SOIC packages.

Applications

• High impedance sensors
• Photodiode amplifier
• Precision instrumentation
• Phase-locked loop filters
• High end, professional audio
• DAC output amplifier
• ATE
• Medical

Key features

• Low offset voltage: 200 μV maximum
• Offset drift: 1 μV/°C typical
• Very low input bias current: 5 pA maximum
• Extended temperature range: -40°C to +125°C
• ±2.25 V to ±15 V dual supply
• ADA4627-1 GBW: 19 MHz
• ADA4637-1 GBW: 79 MHz
• Voltage noise: 6.1 nV/√Hz at 1 kHz
• ADA4627-1 slew rate: 82 V/μs
• ADA4637-1 slew rate: 170 V/μs
• High gain: 120 dB typical
• High CMRR: 116 dB typical
• High PSRR: 112 dB typical