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AD8222
PRODUCTIONPrecision, Dual-Channel Instrumentation Amplifier
- Part Models
- 12
- 1ku List Price
- Starting From $4.39
Part Details
- Two channels in small 4 mm × 4 mm LFCSP
- Gain set with 1 resistor per amplifier (G = 1 to 10,000)
- Low noise
- 8 nV/√Hz at 1 kHz
- 0.25 µV p-p (0.1 Hz to 10 Hz)
- High accuracy dc performance (B grade)
- 60 µV maximum input offset voltage
- 0.3 µV/°C maximum input offset drift
- 1.0 nA maximum input bias current
- 126 dB minimum CMRR (G = 100)
- Excellent ac performance
- 140 kHz bandwidth (G = 100)
- 13 µs settling time to 0.001%
- Differential output option (single channel)
- Fully specified
- Adjustable common-mode output
- Supply range: ±2.3 V to ±18 V
- Download AD8222-KGD Data Sheet.
- Available As Known Good Die and fully guaranteed to data sheet specifications
The AD8222 is a dual-channel, high performance instrumentation amplifier that requires only one external resistor per amplifier to set gains of 1 to 10,000.
The AD8222 is the first dual-instrumentation amplifier in the small 4 mm × 4mm LFCSP. It requires the same board area as a typical single instrumentation amplifier. The smaller package allows a 2× increase in channel density and a lower cost per channel, all with no compromise in performance.
The AD8222 can also be configured as a single-channel, differential output instrumentation amplifier. Differential outputs provide high noise immunity, which can be useful when the output signal must travel through a noisy environment, such as with remote sensors. The configuration can also be used to drive differential input analog-to-digital converters (ADCs). The AD8222 maintains a minimum CMRR of 80 dB to 4 kHz for all grades at G = 1. High CMRR over frequency allows the AD8222 to reject wideband interference and line harmonics, greatly simplifying filter requirements. The AD8222 also has a typical CMRR drift over temperature of just 0.07 µV/V/°C at G = 1.
The AD8222 operates on both single and dual supplies and only requires 2.2 mA maximum supply current for both amplifiers. It is specified over the industrial temperature range of −40°C to +85°C and is fully RoHS compliant.
For a single-channel version, see the AD8221.
Applications
- Multichannel data acquisition for
- ECG and medical instrumentation
- Industrial process controls
- Wheatstone bridge sensors
- Differential drives for
- High resolution input ADCs
- Remote sensors
Documentation
Data Sheet 2
Application Note 4
Technical Articles 2
Evaluation Design File 1
Technical Book 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| AD8222ACPZ-R7 | 16-Lead LFCSP (4mm x 4mm w/ EP) | ||
| AD8222ACPZ-RL | 16-Lead LFCSP (4mm x 4mm w/ EP) | ||
| AD8222ACPZ-WP | 16-Lead LFCSP (4mm x 4mm w/ EP) | ||
| AD8222BCPZ-R7 | 16-Lead LFCSP (4mm x 4mm w/ EP) | ||
| AD8222BCPZ-RL | 16-Lead LFCSP (4mm x 4mm w/ EP) | ||
| AD8222BCPZ-WP | 16-Lead LFCSP (4mm x 4mm w/ EP) | ||
| AD8222HACPZ-R7 | 16-Lead LFCSP (4mm x 4mm x 0.85mm) | ||
| AD8222HACPZ-RL | 16-Lead LFCSP (4mm x 4mm x 0.85mm) | ||
| AD8222HACPZ-WP | 16-Lead LFCSP (4mm x 4mm x 0.85mm) | ||
| AD8222HBCPZ-R7 | 16-Lead LFCSP (4mm x 4mm x 0.85mm) | ||
| AD8222HBCPZ-RL | 16-Lead LFCSP (4mm x 4mm x 0.85mm) | ||
| AD8222HBCPZ-WP | 16-Lead LFCSP (4mm x 4mm x 0.85mm) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
May 5, 2014 - 14_0020 Conversion of 4x4mm body Size LFCSP Package Outlines from Punch to Sawn and Transfer of Assembly Site to Amkor Philippines. |
||
| AD8222ACPZ-R7 | PRODUCTION | |
| AD8222ACPZ-RL | PRODUCTION | |
| AD8222ACPZ-WP | ||
| AD8222BCPZ-R7 | PRODUCTION | |
| AD8222BCPZ-RL | PRODUCTION | |
| AD8222BCPZ-WP | ||
| AD8222HACPZ-R7 | PRODUCTION | |
| AD8222HACPZ-RL | PRODUCTION | |
| AD8222HACPZ-WP | ||
| AD8222HBCPZ-R7 | PRODUCTION | |
| AD8222HBCPZ-RL | PRODUCTION | |
| AD8222HBCPZ-WP | ||
|
Feb 15, 2010 - 07_0061 LFCSP Package Manufacturing Line Transfer from Amkor Korea to Amkor PRC |
||
| AD8222BCPZ-RL | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- AD8222
In-Amp Diamond Plot Tool
The Diamond Plot Tool is a web application that generates a configuration-specific Output Voltage Range vs. Input Common-Mode Voltage graph, also known as the Diamond Plot, for Analog Devices Instrumentation Amplifiers. Based on user inputs such as supply voltage, gain, and input signal range, the tool detects saturation and recommends in-amps for which the input signal is in-range and the configuration is valid. Avoid saturation, find the best in-amp for your design, and save time.
Open ToolSPICE Model 1
Signal Chain Designer - BETA
Signal Chain Designer is a web-based tool designed to create and simulate complex precision signal chains. See your circuit’s performance before you commit to your PCB: transfer function, noise, power consumption, input range, and DC error. Quickly experiment with different parts and architectures. Signal chains can be exported to LTspice for further analysis.
Open ToolLTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
AD8222 Evaluation Board