Overview
The AD620BR-REEL7, produced by Analog Devices Inc., is a low-cost, high-accuracy instrumentation amplifier. This device is designed to offer superior performance in terms of accuracy, power consumption, cost, size, and ease of use. It requires only one external resistor to set gains ranging from 1 to 10,000, making it highly versatile for various applications. The AD620BR-REEL7 is packaged in an 8-lead SOIC, which is smaller than discrete designs and offers lower power consumption, making it suitable for battery-powered and portable applications.
Key Specifications
| Parameter | Rating/Value |
|---|---|
| Package | 8-Lead SOIC |
| Supply Voltage | ±2.3 V to ±18 V |
| Operating Temperature Range | −40°C to +85°C |
| Input Bias Current | 500 pA max |
| Input Offset Voltage | 50 μV max |
| Offset Drift | 0.6 μV/°C max |
| Gain Range | 1 to 10,000 |
| Bandwidth | 1 MHz |
| Slew Rate | 1.2 V/μs |
| Supply Current | 1.3 mA max |
| Output Current per Channel | 18 mA |
Key Features
- High accuracy with 40 ppm maximum nonlinearity
- Low offset voltage of 50 μV max and offset drift of 0.6 μV/°C max
- Low noise: 9 nV/√Hz at 1 kHz, 0.28 μV p-p in the 0.1 Hz to 10 Hz band
- Low input bias current of 1.0 nA max due to Superβeta processing
- Fast settling time of 15 μs to 0.01%
- User-friendly pin configuration for easy addition or subtraction of reference voltages and control of output offset voltage
- Low power consumption, suitable for battery-powered and portable applications
Applications
- Precision data acquisition systems
- Weigh scales and transducer interfaces
- Medical applications such as ECG and noninvasive blood pressure monitors
- Industrial process controls
- Multiplexed applications due to its fast settling time
Q & A
- What is the gain range of the AD620BR-REEL7?
The gain range of the AD620BR-REEL7 is from 1 to 10,000, set by a single external resistor.
- What is the typical supply current of the AD620BR-REEL7?
The typical supply current is 1.3 mA max.
- What is the input bias current of the AD620BR-REEL7?
The input bias current is 500 pA max.
- What is the bandwidth of the AD620BR-REEL7?
The bandwidth is 1 MHz.
- What are the operating temperature ranges for the AD620BR-REEL7?
The operating temperature range is −40°C to +85°C.
- What is the slew rate of the AD620BR-REEL7?
The slew rate is 1.2 V/μs.
- What are some common applications of the AD620BR-REEL7?
Common applications include precision data acquisition systems, weigh scales, medical devices like ECG and blood pressure monitors, and industrial process controls.
- How does the AD620BR-REEL7 handle noise?
The AD620BR-REEL7 features low noise with 9 nV/√Hz at 1 kHz and 0.28 μV p-p in the 0.1 Hz to 10 Hz band.
- What is the significance of the Superβeta processing in the AD620BR-REEL7?
The Superβeta processing reduces the input bias current to 1.0 nA max, enhancing the amplifier's performance.
- Can the AD620BR-REEL7 be used in multiplexed applications?
Yes, the AD620BR-REEL7 is suitable for multiplexed applications due to its fast settling time of 15 μs to 0.01%.
