The AD620ARZ is a low‑cost, high‑accuracy instrumentation amplifier (in‑amp) manufactured by Analog Devices
Specifications
Manufacturer:
Analog Devices Inc.
Product Number:
AD620ARZ
Description:
IC INST AMP 1 CIRCUIT 8SOIC
Highlight:
AD620ARZ instrumentation amplifier
,low-cost in-amp IC
,high-accuracy integrated circuit
Introduction
AD620ARZ Instrumentation Amplifier
The AD620ARZ is a low-cost, high-accuracy instrumentation amplifier manufactured by Analog Devices, designed for precision signal conditioning applications.
Core Functions
- Differential Signal Amplification: Amplifies low-level differential input signals from sensors like strain gauges, thermocouples, and biopotential electrodes with high gain and precision.
- Gain Setting: Easily configured using a single external resistor (RG) with gain range from 1 to 10,000 using formula: G = 1 + 49.4 kΩ / RG.
- High Common-Mode Rejection: Excellent CMRR of typically 110 dB at G=10, effectively suppressing noise common to both input terminals.
- Low Power Consumption: Maximum supply current of 1.3 mA, ideal for battery-powered and portable devices.
- Wide Power Supply Range: Accepts dual supplies from ±2.3V to ±18V.
High Precision DC Performance
- Maximum nonlinearity: 40 ppm
- Maximum input offset voltage: 50 μV
- Maximum offset drift: 0.6 μV/°C
- Low input bias current: 1.0 nA max (Superβeta input stage)
- Low Noise: Input voltage noise of 9 nV/√Hz at 1 kHz and 0.28 μV p-p (0.1 Hz to 10 Hz).
- Fast Settling Time: Settles to 0.01% accuracy in 15 μs, suitable for multiplexed data acquisition systems.
Typical Applications
- Weigh Scales & Precision Load Cells: Amplifying millivolt-level output from strain-gauge sensors
- Medical Instrumentation: ECG machines, non-invasive blood pressure monitors, and bio-signal acquisition devices
- Sensor Interfaces: Signal conditioning for pressure, temperature, flow, and industrial transducers
- Data Acquisition Systems: Precision analog-front-end (AFE) for high-resolution ADCs
- Industrial Process Control: Monitoring and controlling analog signals in factory automation
- Battery-Powered Portable Equipment: Handheld meters, remote sensors, and field instruments
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