Overview
The AD8222BCPZ-WP is a high-performance, dual-channel instrumentation amplifier produced by Analog Devices Inc. This device is notable for its compact 4 mm × 4 mm LFCSP (Lead Frame Chip Scale Package) and its ability to set gains from 1 to 10,000 using only one external resistor per amplifier. The AD8222BCPZ-WP is designed to offer excellent DC and AC performance, making it suitable for a variety of applications requiring high accuracy and low noise.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Input Offset Voltage (VOSI) | 120 µV (max) | VS = ±5 V to ±15 V, TA = −40°C to +85°C |
| Average Temperature Coefficient of VOSI | 0.4 µV/°C (max) | TA = −40°C to +85°C |
| Input Bias Current (IBIAS) | 2.0 nA (max) | TA = −40°C to +85°C |
| Common Mode Rejection Ratio (CMRR) | 126 dB (min) at G = 100 | TA = −40°C to +85°C |
| Bandwidth | 140 kHz (−3 dB) at G = 100 | TA = 25°C |
| Settling Time | 13 µs to 0.001% | TA = 25°C |
| Power Supply Operating Range | ±2.3 V to ±18 V | |
| Quiescent Current (per Amplifier) | 1.1 mA (max) | TA = −40°C to +85°C |
| Temperature Range | −40°C to +85°C (specified), −40°C to +125°C (operational) |
Key Features
- Dual-channel instrumentation amplifier in a compact 4 mm × 4 mm LFCSP package.
- Gain settable from 1 to 10,000 using only one external resistor per amplifier.
- 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 low input offset voltage and drift.
- 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.
- Adjustable common-mode output.
- Operates on both single and dual supplies.
- RoHS compliant.
Applications
- Multichannel data acquisition for Electrocardiogram (ECG) and medical instrumentation.
- Industrial process controls.
- Wheatstone bridge sensors.
- Differential drives for high-resolution input ADCs.
- Remote sensors.
Q & A
- What is the AD8222BCPZ-WP used for?
The AD8222BCPZ-WP is a dual-channel instrumentation amplifier used in various applications requiring high accuracy and low noise, such as medical instrumentation, industrial process controls, and remote sensing.
- How is the gain set on the AD8222BCPZ-WP?
The gain on the AD8222BCPZ-WP is set using only one external resistor per amplifier, allowing gains from 1 to 10,000.
- What is the input offset voltage of the AD8222BCPZ-WP?
The input offset voltage (VOSI) of the AD8222BCPZ-WP is 120 µV (max) over the temperature range of −40°C to +85°C.
- What is the common mode rejection ratio (CMRR) of the AD8222BCPZ-WP?
The CMRR of the AD8222BCPZ-WP is 126 dB (min) at a gain of 100.
- What is the bandwidth of the AD8222BCPZ-WP?
The bandwidth of the AD8222BCPZ-WP is 140 kHz (−3 dB) at a gain of 100.
- What is the settling time of the AD8222BCPZ-WP?
The settling time of the AD8222BCPZ-WP is 13 µs to 0.001%.
- What is the power supply operating range of the AD8222BCPZ-WP?
The power supply operating range of the AD8222BCPZ-WP is ±2.3 V to ±18 V.
- Is the AD8222BCPZ-WP RoHS compliant?
Yes, the AD8222BCPZ-WP is RoHS compliant.
- What is the temperature range for the AD8222BCPZ-WP?
The specified temperature range for the AD8222BCPZ-WP is −40°C to +85°C, and it is operational up to +125°C.
- Can the AD8222BCPZ-WP be used in differential output configuration?
Yes, the AD8222BCPZ-WP can be configured as a single-channel differential output instrumentation amplifier.
