Overview
The AD8222BCPZ-RL is a high-performance, dual-channel instrumentation amplifier produced by Analog Devices Inc. This component is notable for its compact 4 mm × 4 mm LFCSP package, which allows for a 2× increase in channel density without compromising performance. It requires only one external resistor per amplifier to set gains ranging from 1 to 10,000. The AD8222 is designed for applications requiring high accuracy, low noise, and excellent common-mode rejection ratio (CMRR), making it suitable for a variety of industrial and medical applications.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 2 |
| Gain Range | 1 to 10,000 |
| Noise at 1 kHz | 8 nV/√Hz |
| Input Offset Voltage | 60 µV (maximum) |
| Input Offset Drift | 0.3 µV/°C (maximum) |
| Input Bias Current | 1.0 nA (maximum) |
| CMRR at G = 100 | 126 dB (minimum) |
| Bandwidth at G = 100 | 140 kHz |
| Settling Time to 0.001% | 13 µs |
| Supply Range | ±2.3 V to ±18 V |
| Supply Current per Amplifier | 0.9 mA to 1.1 mA |
| Operating Temperature Range | −40°C to +85°C |
Key Features
- Compact 4 mm × 4 mm LFCSP package with two channels, increasing channel density without compromising performance.
- Gain set with one external resistor per amplifier (G = 1 to 10,000).
- Low noise: 8 nV/√Hz at 1 kHz and 0.25 µV p-p (0.1 Hz to 10 Hz).
- High accuracy dc performance with a maximum input offset voltage of 60 µV and a maximum input offset drift of 0.3 µV/°C.
- Excellent ac performance with a bandwidth of 140 kHz and a settling time of 13 µs to 0.001%.
- Differential output option for single-channel configuration, providing high noise immunity.
- Adjustable common-mode output and fully specified operation.
- Operates on both single and dual supplies with a low quiescent current.
Applications
- Multichannel data acquisition for ECG and medical instrumentation.
- Industrial process controls.
- Wheatstone bridge sensors.
- Differential drives for high-resolution input ADCs.
- Remote sensors.
Q & A
- What is the gain range of the AD8222BCPZ-RL? The gain range is from 1 to 10,000, set by one external resistor per amplifier.
- What is the noise level at 1 kHz for the AD8222BCPZ-RL? The noise level is 8 nV/√Hz at 1 kHz.
- What is the maximum input offset voltage of the AD8222BCPZ-RL? The maximum input offset voltage is 60 µV.
- Can the AD8222BCPZ-RL be configured for differential output? Yes, it can be configured as a single-channel, differential output instrumentation amplifier.
- What is the supply range for the AD8222BCPZ-RL? The supply range is ±2.3 V to ±18 V.
- What is the operating temperature range for the AD8222BCPZ-RL? The operating temperature range is −40°C to +85°C.
- How much supply current does the AD8222BCPZ-RL require per amplifier? The supply current per amplifier is 0.9 mA to 1.1 mA.
- What are the typical applications of the AD8222BCPZ-RL? Typical applications include multichannel data acquisition, ECG and medical instrumentation, industrial process controls, Wheatstone bridge sensors, and remote sensors.
- Does the AD8222BCPZ-RL support both single and dual supply operations? Yes, it supports both single and dual supply operations.
- What is the CMRR of the AD8222BCPZ-RL at a gain of 100? The CMRR at a gain of 100 is 126 dB (minimum).
