AD7657
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AD7657

250 kSPS, 6-Channel, Simultaneous Sampling, Bipolar, 14-Bit A/D Converter

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 3
1ku List Price Starting From $12.48
Features
  • 6 independent ADCs
  • True bipolar analog inputs
  • Pin-/software-selectable ranges: ±10 V, ±5 V
  • Fast throughput rate: 250 kSPS
  • iCMOS process technology
  • Wide input bandwidth 86.5 dB SNR at 50 kHz input frequency
  • Low power 140 mW at 250 kSPS with 5 V supplies
  • On-chip reference and reference buffers
  • Parallel, serial, and daisy-chain interface modes
  • High speed serial interface SPI®-/QSPI-/MICROWIRE-/DSP-compatible
  • Standby mode: 100 µW maximum
  • 64-lead LQFP
Additional Details
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The AD7656 / AD7657 / AD7658 contain six 16-/14-/12-bit, fast, low power, successive approximation ADCs all in the one package that is designed on the iCMOS process (industrial CMOS). iCMOS is a process combining high voltage silicon with submicron CMOS and complementary bipolar technologies. It enables the development of a wide range of high performance analog ICs, capable of 33 V operation in a footprint that no previous generation of high voltage parts could achieve. Unlike analog ICs using conventional CMOS processes, iCMOS components can accept bipolar input signals while providing increased performance, which dramatically reduces power consumption and package size.

The AD7656 / AD7657 / AD7658 feature throughput rates up to 250 kSPS. The parts contain low noise, wide bandwidth, track-and-hold amplifiers that can handle input frequencies up to 12 MHz.

The conversion process and data acquisition are controlled using CONVST signals and an internal oscillator. Three CONVST pins allow independent, simultaneous sampling of the three ADC pairs. The AD7656 / AD7657 / AD7658 all have a high speed parallel and serial interface, allowing the devices to interface with microprocessors or DSPs. In serial interface mode, the parts have a daisy-chain feature that allows multiple ADCs to connect to a single serial interface. The AD7656 / AD7657 / AD7658 can accommodate true bipolar input signals in the ±4 × VREF range and ±2 × VREF range. The AD7656 / AD7657 / AD7658 also contain an on-chip 2.5 V reference.

For reduced decoupling requirements visit the AD7657-1 product page

PRODUCT HIGHLIGHTS

  1. Six 16-/14-/12-bit, 250 kSPS ADCs on board.
  2. Six true bipolar, high impedance analog inputs.
  3. Parallel and high speed serial interfaces.

APPLICATIONS

  • Power line monitoring systems
  • Instrumentation and control systems
  • Multi-axis positioning systems
Part Models 3
1ku List Price Starting From $12.48

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
AD7657BSTZ
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AD7657BSTZ-REEL
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AD7657YSTZ
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Product Lifecycle

PCN

Dec 1, 2009

- 09_0258

AD7657 and AD7658 Data Sheet Update

AD7657BSTZ

PRODUCTION

AD7657BSTZ-REEL

PRODUCTION

AD7657YSTZ

PRODUCTION

Nov 16, 2009

- 06_0157

Qualification of the 8" H6 Thin Film BiPolar Wafer Fab Process at Analog Devices, Limerick, Ireland

AD7657BSTZ

PRODUCTION

AD7657BSTZ-REEL

PRODUCTION

AD7657YSTZ

PRODUCTION

Jan 5, 2009

- 07_0077

Certification of STATSChipPAC Shanghai, China and AMKOR Philippines as additional sources for Assembly & Test of QFP Packages

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Dec 1, 2009

- 09_0258

arrow down

AD7657 and AD7658 Data Sheet Update

AD7657BSTZ

PRODUCTION

AD7657BSTZ-REEL

PRODUCTION

AD7657YSTZ

PRODUCTION

Nov 16, 2009

- 06_0157

arrow down

Qualification of the 8" H6 Thin Film BiPolar Wafer Fab Process at Analog Devices, Limerick, Ireland

AD7657BSTZ

PRODUCTION

AD7657BSTZ-REEL

PRODUCTION

AD7657YSTZ

PRODUCTION

Jan 5, 2009

- 07_0077

arrow down

Certification of STATSChipPAC Shanghai, China and AMKOR Philippines as additional sources for Assembly & Test of QFP Packages

Software & Part Ecosystem

Software & Part Ecosystem

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Evaluation Kit

Evaluation Kits 1

EVAL-AD7657

AD7657_evaluation_kit

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EVAL-AD7657

AD7657_evaluation_kit

Product Detail

The EVAL-AD7657CBZ is a fully featured evaluation kit for the AD7657. This board operates in stand alone mode or in conjunction with the Evaluation Controller board . When operated with the Evaluation Controller board, software is provided enabling the user to perform detailed analysis of the ADC's performance. This software includes the technical note describing the operation and set up of the evaluation board in standalone operation or when operated with the Evaluation Controller board.

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