Overview
The AD620AR-REEL7, produced by Analog Devices Inc., is a low-cost, high-accuracy instrumentation amplifier. It is designed to be highly versatile and efficient, requiring only one external resistor to set gains ranging from 1 to 10,000. This amplifier is available in 8-lead SOIC and DIP packaging, making it smaller and more power-efficient than discrete designs. With a maximum supply current of 1.3 mA, it is well-suited for battery-powered, portable, and remote applications. The AD620AR-REEL7 features high accuracy, low noise, and low input bias current, making it ideal for precision data acquisition systems and medical applications.
Key Specifications
| Parameter | Rating |
|---|---|
| Supply Voltage | ±2.3 V to ±18 V |
| Input Offset Voltage | 50 μV max |
| Input Offset Drift | 0.6 μV/°C max |
| Input Bias Current | 1.0 nA max |
| Common-Mode Rejection Ratio (G = 10) | 100 dB min |
| Bandwidth (G = 100) | 120 kHz |
| Settling Time to 0.01% | 15 μs |
| Input Voltage Noise | 9 nV/√Hz @ 1 kHz |
| Noise (0.1 Hz to 10 Hz) | 0.28 μV p-p |
| Operating Temperature Range | −40°C to +85°C |
| Storage Temperature Range | −65°C to +125°C |
| Package Type | 8-Lead SOIC |
Key Features
- Easy to use with gain set by 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 consumption with a maximum supply current of 1.3 mA
- Excellent DC performance: low offset voltage, low offset drift, and low input bias current
- Low noise: 9 nV/√Hz input voltage noise at 1 kHz and 0.28 μV p-p noise in the 0.1 Hz to 10 Hz band
- Excellent AC specifications: 120 kHz bandwidth and 15 μs settling time to 0.01%
Applications
- Weigh scales and transducer interfaces
- ECG and medical instrumentation
- Data acquisition systems
- Industrial process controls
- Battery-powered and portable equipment
Q & A
- What is the gain range of the AD620AR-REEL7? The gain range of the AD620AR-REEL7 is 1 to 10,000, set by one external resistor.
- What is the power supply range for the AD620AR-REEL7? The power supply range is ±2.3 V to ±18 V.
- What is the maximum input offset voltage of the AD620AR-REEL7? The maximum input offset voltage is 50 μV.
- What is the input bias current of the AD620AR-REEL7? The input bias current is 1.0 nA max.
- What is the common-mode rejection ratio (CMRR) of the AD620AR-REEL7 at a gain of 10? The CMRR is 100 dB min at a gain of 10.
- What is the bandwidth of the AD620AR-REEL7 at a gain of 100? The bandwidth is 120 kHz at a gain of 100.
- How long does it take for the AD620AR-REEL7 to settle to 0.01%? The settling time to 0.01% is 15 μs.
- What is the input voltage noise of the AD620AR-REEL7 at 1 kHz? The input voltage noise is 9 nV/√Hz at 1 kHz.
- In what types of packaging is the AD620AR-REEL7 available? It is available in 8-lead DIP and SOIC packaging.
- What are some typical applications of the AD620AR-REEL7? Typical applications include weigh scales, medical instrumentation, data acquisition systems, industrial process controls, and battery-powered equipment.
