Overview
The AD621ANZ, produced by Analog Devices Inc., is a low-cost, low-power, high-accuracy instrumentation amplifier. It is designed to be easy to use and is ideally suited for a wide range of applications. The AD621ANZ offers high performance, small size, and low power consumption, making it superior to discrete in-amp designs. It is available in 8-lead DIP and SOIC packages, which are compact and suitable for portable or remote applications where power dissipation, size, and weight are critical.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Current | 1.3 | mA | ||
| Supply Voltage Range | ±2.3 | ±18 | V | |
| Total Gain Error (G = 10) | 0.05 | 0.15 | % | |
| Total Gain Drift | -1.5 | ±5 | 1.5 | ppm/°C |
| Total Offset Voltage | 125 | µV | ||
| Offset Voltage Drift | 1.0 | µV/°C | ||
| Input Voltage Noise (1 kHz) | 9 | nV/√Hz | ||
| Input Voltage Noise (0.1 Hz to 10 Hz) | 0.28 | µV p-p | ||
| Bandwidth (G = 10) | 800 | kHz | ||
| Bandwidth (G = 100) | 200 | kHz | ||
| Settling Time to 0.01% | 12 | µs |
Key Features
- Ease of use with pin-strappable gains of 10 and 100.
- All errors specified for total system performance.
- Higher performance than discrete in-amp designs.
- Available in 8-lead DIP and SOIC packages.
- Low power consumption with a maximum supply current of 1.3 mA.
- Wide power supply range from ±2.3 V to ±18 V.
- Excellent DC performance with low gain error and drift.
- Low noise characteristics with 9 nV/√Hz at 1 kHz and 0.28 µV p-p from 0.1 Hz to 10 Hz.
- Excellent AC specifications including 800 kHz bandwidth at G = 10 and 200 kHz at G = 100.
- Fast settling time of 12 µs to 0.01%.
Applications
- Weigh scales and precision data acquisition systems.
- Transducer interface circuits.
- ECG and medical instrumentation, including noninvasive blood pressure monitors.
- Industrial process controls.
- Battery-powered and portable equipment.
Q & A
- What is the maximum supply current of the AD621ANZ?
The maximum supply current is 1.3 mA.
- What are the available gain settings for the AD621ANZ?
The gains can be set to 10 and 100 via external pin strapping.
- What is the input voltage noise of the AD621ANZ at 1 kHz?
The input voltage noise is 9 nV/√Hz at 1 kHz.
- What is the bandwidth of the AD621ANZ at a gain of 10?
The bandwidth is 800 kHz at a gain of 10.
- What is the settling time of the AD621ANZ to 0.01%?
The settling time is 12 µs to 0.01%.
- What are the typical applications of the AD621ANZ?
Typical applications include weigh scales, transducer interfaces, ECG and medical instrumentation, industrial process controls, and battery-powered equipment.
- What is the total offset voltage of the AD621ANZ?
The total offset voltage is 125 µV maximum.
- What is the offset voltage drift of the AD621ANZ?
The offset voltage drift is 1.0 µV/°C maximum.
- What are the package options for the AD621ANZ?
The AD621ANZ is available in 8-lead DIP and SOIC packages.
- What is the operating temperature range for the AD621ANZ?
The operating temperature range is -40°C to +85°C.
