ADA4522-4 Datasheet

• Low offset voltage: 5 μV maximum
• Extremely low offset voltage drift: 22 nV/°C maximum
• Low voltage noise density: 
  • 5.8 nV/√Hz typical 
  • 117 nV p-p typical from 0.1 Hz to 10 Hz
• Low input bias current: 50 pA typical
• Unity-gain crossover: 3 MHz typical
• Single-supply operation: input voltage range includes ground and rail-to-rail output
• Wide range of operating voltages 
  • Single-supply operation: 4.5 V to 55 V 
  • Dual-supply operation: ±2.25 V to ±27.5 V
• Integrated EMI filters
• Unity-gain stable

• Inductance, capacitance, and resistance (LCR) meter/megohmmeter front-end amplifiers
• Load cell and bridge transducers
• Magnetic force balance scales
• High precision shunt current sensing
• Thermocouple/resistance temperature detector (RTD) sensors
• Programmable logic controller (PLC) input and output amplifiers

The ADA4522-4 are quad channel, zero drift op amps with low noise and power, ground sensing inputs, and rail-to-rail output, optimized for total accuracy over time, temperature, and voltage conditions. The wide operating voltage and temperature ranges, as well as the high open-loop gain and very low dc and ac errors make the devices well suited for amplifying very small input signals and for accurately reproducing larger signals in a wide variety of applications.

The ADA4522-4 performance is specified at 5.0 V, 30 V, and 55 V power supply voltages. These devices operate over the range of 4.5 V to 55 V, and are excellent for applications using single-ended supplies of 5 V, 10 V, 12 V, and 30 V, or for applications using higher single supplies and dual supplies of ±2.5 V, ±5 V, and ±15 V. The ADA4522-1 /  ADA4522-2 / ADA4522-4 use on-chip filtering to achieve high immunity to electromagnetic interference (EMI).

The ADA4522-4 are fully specified over the extended industrial temperature range of −40°C to +125°C and are available in 14-lead SOIC, and 14-lead TSSOP packages.