Save time and deliver your solutions faster with ADI’s new suite of precision technology signal chains. Align your applications ranging from Smart Industry to Instrumentation, Electrification to Digital Health, to exactly the right precision technology combinations.
Tailor your signal chain with confidence
AD8224
PRODUCTIONPrecision, Dual-Channel, JFET Input, Rail-to-Rail Instrumentation Amplifier
- Part Models
- 12
- 1ku List Price
- Starting From $4.91
Part Details
- Two channels in a small 4 mm × 4 mm LFCSP
- Custom LFCSP package with hidden paddle
- Permits routing and vias underneath package
- Allows full bias current performance
- Low input currents
- 10 pA maximum input bias current (B grade)
- 0.6 pA maximum input offset current (B grade)
- High CMRR
- 100 dB CMRR (minimum), G = 10 (B grade)
- 90 dB CMRR (minimum) to 10 kHz, G = 10 (B grade)
- Excellent ac specifications and low power
- 1.5 MHz bandwidth (G = 1)
- 14 nV/√Hz input noise (1 kHz)
- Slew rate: 2 V/µs
- 750 µA quiescent current per amplifier
- Versatility
See the AD8224 data sheet for details
The AD8224 is the first single-supply, JFET input instrumentation amplifier available in the space-saving 16-lead, 4 mm × 4 mm LFCSP. It requires the same board area as a typical single instrumentation amplifier yet doubles the channel density and offers a lower cost per channel without compromising performance.
Designed to meet the needs of high performance, portable instrumentation, the AD8224 has a minimum common-mode rejection ratio (CMRR) of 86 dB at dc and a minimum CMRR of 80 dB at 10 kHz for G = 1. Maximum input bias current is 10 pA and typically remains below 300 pA over the entire industrial temperature range. Despite the JFET inputs, the AD8224 typically has a noise corner of only 10 Hz.
With the proliferation of mixed-signal processing, the number of power supplies required in each system has grown.
Designed to alleviate this problem, the AD8224 can operate on a ±18 V dual supply, as well as on a single +5 V supply. The device’s rail-to-rail output stage maximizes dynamic range on the low voltage supplies common in portable applications. Its ability to run on a single 5 V supply eliminates the need for higher voltage, dual supplies. The AD8224 draws 750 μA of quiescent current per amplifier, making it ideal for battery powered devices.
In addition, the AD8224 can 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 ADCs.
For a single-channel version, use the AD8220.
Applications
- Medical instrumentation
- Precision data acquisition
- Transducer interfaces
- Differential drives for high resolution input ADCs
- Remote sensors
Documentation
Data Sheet 1
Application Note 1
Technical Articles 3
Evaluation Design File 1
Technical Book 1
Rarely Asked Question Page 2
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 |
|---|---|---|---|
| AD8224ACPZ-R7 | 16-Lead LFCSP (4mm x 4mm w/ EP) | ||
| AD8224ACPZ-RL | 16-Lead LFCSP (4mm x 4mm w/ EP) | ||
| AD8224ACPZ-WP | 16-Lead LFCSP (4mm x 4mm w/ EP) | ||
| AD8224BCPZ-R7 | 16-Lead LFCSP (4mm x 4mm w/ EP) | ||
| AD8224BCPZ-RL | 16-Lead LFCSP (4mm x 4mm w/ EP) | ||
| AD8224BCPZ-WP | 16-Lead LFCSP (4mm x 4mm w/ EP) | ||
| AD8224HACPZ-R7 | 16-Lead LFCSP (4mm x 4mm x 0.85mm) | ||
| AD8224HACPZ-RL | 16-Lead LFCSP (4mm x 4mm x 0.85mm) | ||
| AD8224HACPZ-WP | 16-Lead LFCSP (4mm x 4mm x 0.85mm) | ||
| AD8224HBCPZ-R7 | 16-Lead LFCSP (4mm x 4mm x 0.85mm) | ||
| AD8224HBCPZ-RL | 16-Lead LFCSP (4mm x 4mm x 0.85mm) | ||
| AD8224HBCPZ-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. |
||
| AD8224ACPZ-R7 | PRODUCTION | |
| AD8224ACPZ-RL | PRODUCTION | |
| AD8224ACPZ-WP | ||
| AD8224BCPZ-R7 | PRODUCTION | |
| AD8224BCPZ-RL | PRODUCTION | |
| AD8224BCPZ-WP | ||
| AD8224HACPZ-WP | ||
| AD8224HBCPZ-R7 | PRODUCTION | |
| AD8224HBCPZ-RL | PRODUCTION | |
| AD8224HBCPZ-WP | ||
|
Feb 15, 2010 - 07_0061 LFCSP Package Manufacturing Line Transfer from Amkor Korea to Amkor PRC |
||
| AD8224ACPZ-RL | PRODUCTION | |
| AD8224BCPZ-R7 | PRODUCTION | |
| AD8224BCPZ-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:
- AD8224
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
AD8224 Evaluation Board