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Precision ADCs
Documents Difference between AD7656 and AD7656-1
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  • -AD7656: FAQ
    • Difference between AD7656 and AD7656-1
    • AD7656: RC between AVcc and DVcc
    • AD7656: power and decoupling caps requirements
    • AD7656: Is it possible to read 2 channels as opposed to all 6
    • My question is the same, but for two different devices, AD974 and AD7656.
    • In Your data sheet for the AD7856ARS page 7. Pin 7 CREF1, it says 470n NP0. Is this correct? We cant find such high value with NP0.
    • burned out issue of AD7656
    • Part number of the EMC Filter in the AD7656EVB
    • AD7656/ AD7656-1 - grounding considerations
    • AD7656/AD7656-1 - need for RESET
    • AD7656/AD7656-1 - problems even after RESET
    • AD7656/AD7657/AD7658: What order is channel data presented in serial mode, single DOUT line
  • +AD7657-1: FAQ
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  • AD7398 SPI Voltage vs VCC
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Difference between AD7656 and AD7656-1

Q: What are the similarities and differences between AD7656 and AD7656-1?

A:

  • The AD7656-1 is a pin to pin and software compatible upgrade to the AD7656.
  • The AD7656-1 has reduced decoupling requirements and reduced bill of materials cost compared with the AD7656.
  • Both parts contain low noise, wide bandwidth, track-and-hold amplifiers but differ in full power bandwidth. The AD7656 can handle input frequencies up to 12 MHz, the AD7656-1 can handle up to 4.5 MHz.
  • Functionality-wise, the only difference is that the AD7656 can work with a 2.5V or 3V reference whereas the AD7656-1 can only accept a 2.5V reference.
  • There are AC/DC specification differences that could affect calibration routines – please refer to the datasheet specification table for more information.
  • ad7656-1
  • ad7656
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