Overview
The AD8221ARZ-RL, produced by Analog Devices Inc., is a high-performance, gain-programmable instrumentation amplifier. It is renowned for delivering the industry’s highest Common Mode Rejection Ratio (CMRR) over frequency in its class. This amplifier is designed to provide excellent AC specifications, including a minimum CMRR of 80 dB up to 10 kHz and a bandwidth of 825 kHz at a gain of 1. The AD8221ARZ-RL operates over a wide power supply range of ±2.3 V to ±18 V and is specified for performance over a temperature range of −40°C to +85°C, with operational capability up to 125°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Power Supply Range | ±2.3 V | ±18 V | V | |
| Operating Temperature | −40°C | +85°C | °C | |
| Bandwidth (G = 1) | 825 kHz | kHz | ||
| CMRR (G = 1) | 80 dB | dB | ||
| Slew Rate | 2 V/µs | V/µs | ||
| Input Offset Voltage (Vos) | 60 µV | µV | ||
| Input Bias Current | 0.5 nA | 2 nA | 3 nA | nA |
| Output Current per Channel | 18 mA | mA | ||
| Package | 8-SOIC |
Key Features
- Gain programmable with a single external resistor, allowing a gain range of 1 to 1000.
- Wide power supply range: ±2.3 V to ±18 V, making it versatile for various applications.
- Excellent AC specifications, including 80 dB minimum CMRR to 10 kHz and 825 kHz bandwidth at G = 1.
- Low noise characteristics: 8 nV/√Hz input voltage noise at 1 kHz and 0.25 µV p-p input noise (0.1 Hz to 10 Hz).
- High accuracy DC performance with low offset voltage (25 µV maximum) and low offset drift (0.3 µV/°C maximum).
- Available in space-saving MSOP and SOIC packages, suitable for multichannel or space-constrained applications.
Applications
- Weigh scales and industrial process controls.
- Bridge amplifiers and precision data acquisition systems.
- Medical instrumentation and strain gages.
- Transducer interfaces and aerospace instrumentation.
- Precision signal conditioning in various industrial and medical environments).
Q & A
- What is the gain range of the AD8221ARZ-RL? The gain range is from 1 to 1000, set by a single external resistor.
- What is the power supply range for the AD8221ARZ-RL? The power supply range is ±2.3 V to ±18 V.
- What is the CMRR of the AD8221ARZ-RL at a gain of 1? The CMRR is 80 dB minimum up to 10 kHz.
- What is the bandwidth of the AD8221ARZ-RL at a gain of 1? The bandwidth is 825 kHz.
- What is the slew rate of the AD8221ARZ-RL? The slew rate is 2 V/µs.
- What are the typical applications of the AD8221ARZ-RL? Typical applications include weigh scales, industrial process controls, bridge amplifiers, precision data acquisition systems, medical instrumentation, and transducer interfaces.
- What is the input offset voltage of the AD8221ARZ-RL? The maximum input offset voltage is 60 µV.
- What is the input bias current of the AD8221ARZ-RL? The input bias current is 0.5 nA to 3 nA over temperature.
- What are the package options for the AD8221ARZ-RL? It is available in 8-lead SOIC and MSOP packages.
- Is the AD8221ARZ-RL suitable for high-temperature environments? Yes, it is operational from −40°C to +125°C.
