This combination of features makes the AD8505/AD8506/AD8508 amplifiers ideal choices for battery-powered applications because they minimize errors due to power supply voltage variations over the lifetime of the battery and maintain high CMRR even for a rail-to-rail input op amp. Remote battery-powered sensors, handheld instrumentation, consumer equipment, hazard detection (for example, smoke, fire, and gas), and patient monitors can benefit from the features of the AD8505/AD8506/AD8508 amplifiers.
The AD8505/AD8506/AD8508 are specified for both the industrial temperature range of −40°C to +85°C and the extended industrial temperature range of −40°C to +125°C. The AD8505 single ampli-fier is available in a tiny 5-lead SOT-23 package. The AD8506ACBZ-REEL7 dual amplifier is available in 8-lead MSOP and 8-ball WLCSP packages. The AD8508 quad amplifier is available in 14-lead TSSOP and 14-ball WLCSP packages. The AD8505/AD8506/AD8508 are members of a growing series of zero crossover distortion op amps offered by Analog Devices, Inc., including the ADA4505-1/ ADA4505-2/ADA4505-4, that operate from a single 1.8 V to 5 V supply or from dual ±0.9 V to ±2.5 V power supplies.
Feature
- PSRR: 100 dB minimum
- CMRR: 105 dB typical
- Very low supply current: 20 μA per amplifier maximum
- 1.8 V to 5 V single supply or ±0.9 V to ±2.5 V dual supply
- Rail-to-rail input/output
- Low noise: 45 nV/√Hz at 1 kHz
- 2.5 mV offset voltage maximum
- Very low input bias current: 1 pA typical
Applications
- Pressure and position sensors
- Remote security
- Bio sensors
- IR thermometers
- Battery-powered consumer equipment
- Hazard detectors
(Picture: Pinout)
