AD8221 Precision Instrumentation Amplifier
The AD8221 is a gain programmable, high performance instrumentation amplifier that delivers the industry’s highest CMRR over frequency in its class. The CMRR of instrumentation amplifiers on the market today falls off at 200 Hz. In contrast, the AD8221 maintains a minimum CMRR of 80 dB to 10 kHz for all grades at G = 1. High CMRR over frequency allows the AD8221 to reject wideband interference and line harmonics, greatly simplifying filter requirements. Possible applications include precision data acquisition, biomedical analysis, and aerospace instrumentation.
Low voltage offset, low offset drift, low gain drift, high gain accuracy, and high CMRR make this part an excellent choice in applications that demand the best dc performance possible, such as bridge signal conditioning.
Programmable gain affords the user design flexibility. A single resistor sets the gain from 1 to 1000. The AD8221 operates on both single and dual supplies and is well suited for applications where ±10 V input voltages are encountered.
The AD8221 is available in a low cost 8-lead SOIC and 8-lead MSOP, both of which offer the industry’s best performance. The MSOP requires half the board space of the SOIC, making it ideal for multichannel or space-constrained applications.
Performance is specified over the entire industrial temperature range of −40°C to +85°C for all grades. Furthermore, the AD8221 is operational from −40°C to +125°C*.
Applications
- Weigh scales
- Industrial process controls
- Bridge amplifiers
- Precision data acquisition systems
- Medical instrumentation
- Strain gages
- Transducer interfaces
Features and BenefitsAvailable in space-saving MSOPGain set with 1 external resistor (gain range 1 to 1000)Wide power supply range: ±2.3 V to ±18 VTemperature range for specified performance: −40°C to +85°COperational up to 125°CExcellent AC specifications80 dB minimum CMRR to 10 kHz (G = 1)825 kHz, –3 dB bandwidth (G = 1)2 V/µs slew rateSee data sheet for additional featuresDownload AD8221-EP Data SheetMilitary temperature range (−55°C to +125°C)Controlled manufacturing baselineOne assembly/test siteOne fabrication siteEnhanced product change notificationQualification data available on requestV62/16619 DSCC Drawing Number | Aerospace and DefenseSPICE Models |
Data Sheets
Application Notes
User Guides
Technical Books
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|
| AD8230YRZ Production | 8 ld SOIC | OTH 98 | -40 to 125C | 3.53 | 2.99 | Y |
| AD8230YRZ-REEL Production | 8 ld SOIC | REEL 2500 | -40 to 125C | 3.53 | 2.99 | Y |
| AD8230YRZ-REEL7 Production | 8 ld SOIC | REEL 1000 | -40 to 125C | 3.53 | 2.99 | Y |
Reference Materials
