Overview
The AD620BR, produced by Analog Devices Inc., is a low-cost, high-accuracy instrumentation amplifier. It is designed to offer high precision and low power consumption, making it suitable for a variety of applications, including battery-powered, portable, and remote devices. The AD620BR features an adjustable gain range from 1 to 10,000, which can be set using a single external resistor. This amplifier is known for its compact 8-lead SOIC and DIP packaging, which is smaller than discrete designs and offers lower power consumption with a maximum supply current of 1.3 mA.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | ±2.3 | ±18 | V | |
| Operating Temperature Range | −40 | +85 | °C | |
| Maximum Nonlinearity | 40 | ppm | ||
| Offset Voltage | 50 | μV | ||
| Offset Drift | 0.6 | μV/°C | ||
| Input Bias Current | 1.0 | nA | ||
| Input Voltage Noise | 9 | nV/√Hz at 1 kHz | ||
| Common-Mode Rejection Ratio (G=10) | 93 | 110 | 100 | dB |
| Settling Time (to 0.01%) | 15 | μs | ||
| Maximum Supply Current | 1.3 | mA | ||
| Power Dissipation | 650 | mW |
Key Features
- Adjustable Gain: The AD620BR allows gain adjustment from 1 to 10,000 using a single external resistor.
- Low Power Consumption: Maximum supply current of 1.3 mA, making it suitable for battery-powered and portable applications.
- High Accuracy: Maximum nonlinearity of 40 ppm, offset voltage of 50 μV max, and offset drift of 0.6 μV/°C max.
- Low Noise: Input voltage noise of 9 nV/√Hz at 1 kHz and 0.28 μV peak-to-peak noise in the 0.1 Hz to 10 Hz range.
- Fast Settling Time: Settling time of 15 μs to 0.01%.
- Compact Packaging: Available in 8-lead SOIC and DIP packages, which are smaller than discrete designs.
- Common-Mode Rejection Ratio: Minimum of 93 dB at G = 10.
Applications
- Precision Data Acquisition Systems: Ideal for applications such as weigh scales and transducer interfaces where high accuracy is crucial.
- Medical Devices: Suitable for medical applications like ECG and noninvasive blood pressure monitors due to its low noise and low input bias current.
- Industrial Process Controls: Used in industrial process controls where precise signal amplification is required.
- Portable and Remote Devices: Its low power consumption makes it a good fit for battery-powered, portable, and remote applications.
Q & A
- What is the gain range of the AD620BR?
The AD620BR has an adjustable gain range from 1 to 10,000, set using a single external resistor.
- What is the maximum supply current of the AD620BR?
The maximum supply current is 1.3 mA.
- What is the common-mode rejection ratio of the AD620BR at G = 10?
The common-mode rejection ratio is a minimum of 93 dB at G = 10.
- What is the input voltage noise of the AD620BR at 1 kHz?
The input voltage noise is 9 nV/√Hz at 1 kHz.
- What is the settling time of the AD620BR to 0.01%?
The settling time is 15 μs to 0.01%.
- What are the typical applications of the AD620BR?
Typical applications include precision data acquisition systems, medical devices, industrial process controls, and portable or remote devices.
- What is the maximum nonlinearity of the AD620BR?
The maximum nonlinearity is 40 ppm.
- What is the offset voltage of the AD620BR?
The offset voltage is 50 μV max.
- What is the input bias current of the AD620BR?
The input bias current is 1.0 nA max.
- What are the available package types for the AD620BR?
The AD620BR is available in 8-lead SOIC and DIP packages.
- What is the operating temperature range of the AD620BR?
The operating temperature range is −40°C to +85°C.
