AD8228 Low Gain Drift Precision Instrumentation Amplifier Fixed G = 10, 100

Weigh scales Industrial process controls Bridge amplifiers Precision data acquisition systems Medical instrumentation Strain gages Transducer interfaces

The AD8228 is a high performance instrumentation amplifier with very high gain accuracy. Because all gain setting resistors are internal and laser trimmed, gain accuracy and gain drift are better than can be achieved with typical instrumentation amplifiers.

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.

The AD8228 operates on both single and dual supplies. Because the part can operate on supplies up to ±18 V, it is well suited for applications where high common-mode input voltages are encountered. The AD8228 is available in 8-lead MSOP and SOIC packages.

Performance is specified over the entire industrial temperature range of −40°C to +85°C for all grades. Furthermore, the AD8228 is operational from −40°C to +125°C. For a pin-compatible amplifier with similar specifications, but with a gain range of 1 to 1000, see the AD8221.

Applications

Data Sheet, Rev 0, 08/2008

Features and Benefits
  • Easy to use
  • Pin strappable gains of 10 and 100
  • Wide power supply range: ±2.3 V to ±18 V
  • DC specifications (B Grade, G = 10)
    2 ppm/°C gain drift
    0.02% gain error
    50 μV maximum input offset voltage
    0.8 μV/°C maximum input offset drift
    0.6 nA maximum input bias current
    100 dB CMRR
  • AC specifications
    650 kHz, –3 dB bandwidth (G = 10)
    2 V/μs slew rate
  • Low noise
    8 nV/√Hz, @ 1 kHz (G = 100)
    0.3 μV p-p from 0.1 Hz to 10 Hz (G = 100)
Amplifiers
SPICE Models
Data Sheets
Documentnote
AD8228: Low Gain Drift Precision Instrumentation Amplifier Data Sheet (Rev. 0)PDF 338 kB
User Guides
Documentnote
UG-261: Evaluation Boards for the AD62x, AD822x and AD842x SeriesPDF 604 kB
Technical Books
Documentnote
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
AD8253ARMZ Production10 ld MSOPOTH 50-40 to 85C5.894.95Y
AD8253ARMZ-R7 Production10 ld MSOPREEL 1000-40 to 85C04.95Y
AD8253ARMZ-RL Production10 ld MSOPREEL 3000-40 to 85C04.95Y
AD8228:低增益漂移精密仪表放大器 (Rev. 0) ad8228
AD8228: Low Gain Drift Precision Instrumentation Amplifier Data Sheet (Rev. 0) ad8228
AD8228 SPICE Macro-Model ad8228
UG-261: Evaluation Boards for the AD62x, AD822x and AD842x Series ad620