Overview
The AD620BRZ-R7 is a low-cost, high-accuracy instrumentation amplifier produced by Analog Devices Inc. It is designed for use in low-noise, low-power applications and offers a wide range of features that make it versatile and highly effective. The amplifier requires only one external resistor to set gains from 1 to 10,000, making it highly configurable for various applications. It features a low input bias current of 1.0 nA max, achieved through Superβeta processing in the input stage, and has a low input voltage noise of 9 nV/√Hz at 1 kHz. The AD620BRZ-R7 is available in an 8-lead SOIC package and is suitable for battery-powered and portable equipment due to its low power consumption of 1.3 mA max supply current.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 1 Channel |
| 3 dB Bandwidth | 1 MHz (G = 1), 120 kHz (G = 100) |
| Slew Rate | 1.2 V/μs typ |
| Supply Voltage Range | ±2.3 V to ±18 V |
| Input Offset Voltage | 15 μV max |
| Input Offset Drift | 0.6 μV/°C max |
| Input Bias Current | 1.0 nA max |
| Common-Mode Rejection Ratio (CMRR) | 110 dB (G = 100) |
| Settling Time | 15 μs to 0.01% |
| Operating Temperature Range | −40°C to +85°C |
| Package Type | 8-Lead SOIC |
Key Features
- Easy to Use: Gain set with one external resistor (gain range 1 to 10,000).
- Low Noise: 9 nV/√Hz input voltage noise at 1 kHz, 0.28 μV p-p noise (0.1 Hz to 10 Hz).
- Low Power Consumption: 1.3 mA max supply current.
- High Performance: Higher performance than three op-amp IA designs, excellent DC and AC specifications.
- Compact Design: Available in 8-lead SOIC and DIP packaging.
- Flexible Applications: Suitable for precision sensor amplification, medical equipment, and industrial instrumentation applications).
Applications
- Weigh Scales: Precision amplification for weight measurement systems).
- ECG and Medical Instrumentation: Used in medical applications such as ECG and noninvasive blood pressure monitors).
- Transducer Interface: Amplifies signals from various transducers).
- Data Acquisition Systems: Ideal for precision data acquisition systems).
- Industrial Process Controls: Used in industrial control systems and pressure/temperature transducers).
- Battery-Powered and Portable Equipment: Suitable for battery-powered and portable devices due to low power consumption).
Q & A
- What is the gain range of the AD620BRZ-R7?
The AD620BRZ-R7 can be set to gains ranging from 1 to 10,000 using a single external resistor).
- What is the input bias current of the AD620BRZ-R7?
The input bias current is 1.0 nA max, achieved through Superβeta processing in the input stage).
- What is the common-mode rejection ratio (CMRR) of the AD620BRZ-R7?
The CMRR is 110 dB at a gain of 100).
- What is the operating temperature range of the AD620BRZ-R7?
The operating temperature range is −40°C to +85°C).
- What is the package type of the AD620BRZ-R7?
The AD620BRZ-R7 is available in an 8-lead SOIC package).
- What are some common applications of the AD620BRZ-R7?
Common applications include weigh scales, ECG and medical instrumentation, transducer interfaces, data acquisition systems, and industrial process controls).
- What is the supply voltage range for the AD620BRZ-R7?
The supply voltage range is ±2.3 V to ±18 V).
- What is the slew rate of the AD620BRZ-R7?
The slew rate is 1.2 V/μs typ).
- How does the AD620BRZ-R7 handle noise?
The AD620BRZ-R7 has a low input voltage noise of 9 nV/√Hz at 1 kHz and 0.28 μV p-p noise in the 0.1 Hz to 10 Hz band).
- Is the AD620BRZ-R7 suitable for battery-powered devices?
Yes, it is suitable due to its low power consumption of 1.3 mA max supply current).
