AD8644ARZ

AD8644ARZ is a quad operational amplifier from Analog Devices. It provides four identical rail-to-rail input/output (RRIO) op-amps in a RoHS-packaged device, designed for compact precision signal conditioning.
Key points
- Four RRIO op-amps in a single package; suitable for single- or dual-supply operation.
- Low input offset voltage and low input bias currents, with low noise for precision sensing.
- Good bandwidth and distortion characteristics for instrumentation, ADC front ends, active filters, transimpedance, and audio paths.
- ARZ denotes a specific RoHS-compliant packaging variant; check the datasheet for exact pinout and package type.
Common applications
- Instrumentation front ends
- Sensor conditioning for ADCs
- Transimpedance and differential amplification
- Active filters and audio preamps
Design notes
- Ensure signals stay within the device’s input common-mode and supply rails.
- Follow recommended layout practices to preserve noise performance.
- For exact electrical specs, timing, and package details, consult the AD8644ARZ datasheet on Analog Devices’ website.

Here are the key features of AD8644ARZ:
- Quad rail-to-rail input/output operational amplifiers in one package
- Very low noise and low distortion suitable for precision signal conditioning
- Unity-gain stability; flexible configurations (inverting, non-inverting, buffers)
- Low input bias current and low offset voltage with good offset drift
- Wide bandwidth and fast slew rate for handling rapid signals
- Operates on single or dual supply with a wide supply voltage range
- Extended temperature range for reliability in harsh environments
- Small 8-pin package (ARZ variant) and RoHS-compliant manufacturing
Note: Packaging and exact electrical figures vary by variant; consult the datasheet for specific numbers and pinout.

AD8644ARZ comes in a 14‑lead package: a 14‑pin TSSOP (RoHS compliant).

- Pin count: 14 pins
- Function: Quad operational amplifier (four RRIO op-amps) with low-noise, precision performance for single-supply applications.

The AD8644ARZ is manufactured by Analog Devices, Inc. (ADI). Analog Devices is an American multinational semiconductor company that designs and manufactures analog, mixed-signal, and DSP integrated circuits for various markets (industrial, automotive, communications, consumer).

AD8644ARZ is a quad, low-noise, rail-to-rail I/O op-amp. Typical applications: multichannel instrumentation front-ends; sensor conditioning (thermocouples, RTDs, strain gauges); photodiode/transimpedance amps; high-speed buffering/ADC front-ends; audio/video preamplifiers; medical instrumentation; active filters and summing amplifiers; data-acquisition front ends.