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  4. AD8295


Overview

Features and Benefits

  • Saves board space
  • Includes precision in-amp, 2 op amps, and 2 matched resistors
  • 4 mm × 4 mm LFCSP
  • No heat slug for more routing room
  • Differential output fully specified
  • Wide power supply range: ±2.3 V to ±18 V
  • In amp specifications:
    Gain set with 1 external resistor (gain range: 1 to 1000)
    8 nV/√Hz, @ 1 kHz, max input voltage noise
    90 dB min CMRR (G = 1)
    0.8 nA max input bias current
    1.2 MHz, −3 dB bandwidth (G = 1)
    2 V/µs slew rate
  • 1 ppm/°C, 0.03% resistor matching

Product Details

The AD8295 contains all the components necessary for a precision instrumentation amplifier front end in one small 4 mm × 4 mm package. It contains a high performance instrumentation amplifier, two general-purpose operational amplifiers, and two precisely matched 10 kΩ resistors.

The AD8295 has been designed to make PCB routing easy and efficient. The AD8295 components are arranged in a logical way so that typical application circuits have short routes and few vias. Unlike most chip scale packages, the AD8295 does not have an exposed metal pad on the back of the part, which frees up additional space for routing and vias. The AD8295 comes in a 4 mm × 4 mm LFCSP that requires half the board space of an 8-pin SOIC package.

The AD8295 includes a high performance, programmable gain instrumentation amplifier. Gain is set from 1 to 1000 with a single resistor. The low noise and excellent common-mode rejection of the AD8295 enable the part to easily detect small signals even in the presence of large common-mode interference. For a similar instrumentation amplifier without the associated signal conditioning circuitry, see the AD8221 or AD8222 data sheet.

The AD8295 operates on both single and dual supplies and is well suited for applications where ±10 V input voltages are encountered. Performance is specified over the entire industrial temperature range of −40°C to +85°C for all grades. The AD8295 is operational from −40°C to +125°C; see the Typical Performance Characteristics section for expected operation up to 125°C.

Applications

  • Industrial process controls
  • Wheatstone bridges
  • Precision data acquisition systems
  • Medical instrumentation
  • Strain gauges
  • Transducer interfaces
  • Differential output
  • Data Sheet, Rev 0, 11/2008

    Product Lifecycle icon-recommended Production

    At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

    Reference Designs (1)

    Design Resources

    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 Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    AD8295ACPZ-R7 Material Declaration Reliability Data 16-Lead LFCSP (4mm x 4mm x 0.85mm)
    AD8295ACPZ-RL Material Declaration Reliability Data 16-Lead LFCSP (4mm x 4mm x 0.85mm)
    AD8295ACPZ-WP Material Declaration Reliability Data 16-Lead LFCSP (4mm x 4mm x 0.85mm)
    AD8295BCPZ-R7 Material Declaration Reliability Data 16-Lead LFCSP (4mm x 4mm x 0.85mm)
    AD8295BCPZ-RL Material Declaration Reliability Data 16-Lead LFCSP (4mm x 4mm x 0.85mm)
    AD8295BCPZ-WP Material Declaration Reliability Data 16-Lead LFCSP (4mm x 4mm x 0.85mm)
    Wafer Fabrication Data

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