Description
The AD620 is a low cost, high accuracy instrumentation amplifier that requires only one external resistor to set gains of 1 to 10,000. Furthermore, the AD620 features 8-lead SOIC and DIP packaging that is smaller than discrete designs and offers lower power (only 1.3 mA max supply current), making it a good fit for battery powered, portable (or remote) applications.
The AD620, with its high accuracy of 40 ppm maximum nonlinearity, low offset voltage of 50 µV max, and offset drift of 0.6 µV/°C max, is ideal for use in precision data acquisition systems, such as weigh scales and transducer interfaces. Furthermore, the low noise, low input bias current, and low power of the AD620 make it well suited for medical applications such as ECG and non-invasive blood pressure monitors.
FEATURES AND BENEFITS
EASY TO USE
Gain Set with One External Resistor (Gain Range 1 to 10,000)
Wide Power Supply Range (±2.3 V to ±18 V)
Higher Performance than Three
Op Amp IA Designs
Available in 8-Lead DIP and SOIC Packaging
Low Power, 1.3 mA max Supply
LOW NOISE
9 nV/√Hz, @ 1 kHz, Input Voltage Noise
0.28 µV p-p Noise (0.1 Hz to 10 Hz)
EXCELLENT DC PERFORMANCE (B GRADE)
50 µV max, Input Offset Voltage
0.6 µV/°C max, Input Offset Drift
1.0 nA max, Input Bias Current
100 dB min Common-Mode
Rejection Ratio (G = 10)
EXCELLENT AC SPECIFICATIONS
120 kHz Bandwidth (G = 100)
15 µs Settling Time to 0.01%
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