AD620AN Description
The AD620AN is a low-cost, high-accuracy instrumentation amplifier that provides gains from 1 to 10,000 with a single external resistor. It features a compact 8-lead package, low power consumption (1.3 mA max), and is ideal for battery-powered and portable applications. With a maximum nonlinearity of 40 ppm, offset voltage of 50 μV, and offset drift of 0.6 μV/°C, it excels in precision data acquisition and medical applications. The amplifier boasts low noise, low input bias current (1.0 nA), and fast settling time (15 μs to 0.01%), making it suitable for multiplexed systems.
AD620AN Pinout
AD620AN Symbol
AD620AN Footprint
AD620AN 3D Model
AD620AN Simplified Schematic
AD620AN Circuit
AD620AN Specification
| Specification | Value |
| Gain Range | 1 to 10,000 |
| Gain Error | ±0.1% of gain setting |
| Slew Rate | 1.2V/µs |
| -3db Bandwidth | 1 MHz |
| Current - Input Bias | 500 pA |
| Voltage - Input Offset | 30 µV |
| Current - Supply | 900µA |
| Current - Output / Channel | 18 mA |
| Voltage - Supply Span (Min) | 4.6 V |
| Voltage - Supply Span (Max) | 36 V |
| nput Current Noise | 0.1 pA/√Hz |
| Power Supply Voltage | ±2.3 V to ±18 V (total range) |
| Supply Current | 1.3 mA maximum |
| Operating Temperature | -40°C ~ 85°C |
| Settling Time | 15 μs to 0.01% |
| Package Type | 8 DIP |
AD620AN Features
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 3 op amp IA designs
Available in 8-lead DIP and SOIC packaging
Low power, 1.3 mA max supply current
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)
9 nV/√Hz @ 1 kHz, input voltage noise
0.28 μV p-p noise (0.1 Hz to 10 Hz)
Excellent ac specifications
120 kHz bandwidth (G = 100)
15 μs settling time to 0.01%
AD620AN Applications
Weigh scales
ECG and medical instrumentation
Transducer interface
Data acquisition systems
Industrial process controls
Battery-powered and portable equipment
AD620AN Package
The AD620AN is available in an 8-lead Dual In-Line Package (DIP), a widely used and robust package type. The DIP configuration features two rows of four pins each, arranged in a standard 0.3-inch (7.62 mm) pin spacing, making it easy to mount on a printed circuit board (PCB). This package design allows for convenient manual soldering or automatic placement in high-volume manufacturing.
FAQs
What is the significance of AD620AN's settling time?
The AD620AN has a settling time of 15 μs to 0.01%, making it suitable for multiplexed applications where quick and accurate signal processing is crucial.
What is the gain range of AD620AN?
The AD620AN allows for gains from 1 to 10,000, set by a single external resistor, offering flexibility in various amplification needs.
What types of applications is the AD620AN suitable for?
The AD620AN is ideal for precision data acquisition systems, such as weigh scales and transducer interfaces. It is also well-suited for medical applications, including ECG and noninvasive blood pressure monitors, due to its low noise and high accuracy.
