AD7887
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AD7887

2.7 V to 5.25 V, Micropower, 2-Channel, 125 kSPS, 12-Bit ADC in 8-Lead MSOP

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Part Details
Part Models 10
1ku List Price Starting From $5.64
Features
  • Specified for VDD of 2.7 V to 5.25 V
  • Flexible power/throughput rate management
  • Shutdown mode: 1 μA max
  • One or two single-ended inputs
  • Serial interface: SPI®/QSPI™/MICROWIRE™/DSP compatible
  • 8-lead narrow SOIC and MSOP packages
Additional Details
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The AD7887 is a high speed, low power, 12-bit analog-to-digital converter (ADC) that operates from a single 2.7 V to 5.25 V power supply. The AD7887 is capable of 125 kSPS throughput rate. The input track-and-hold acquires a signal in 500 ns and features a single-ended sampling scheme. The output coding for the AD7887 is straight binary, and the part is capable of converting full power signals of up to 2.5 MHz.

The AD7887 can be configured for either dual- or single-channel operation via the on-chip control register. There is a default single-channel mode that allows the AD7887 to be operated as a read-only ADC. In single-channel operation, there is one analog input (AIN0) and the AIN1/VREF pin assumes its VREF function. This VREF pin allows the user access to the part’s internal 2.5 V reference, or the VREF pin can be overdriven by an external reference to provide the reference voltage for the part. This external reference voltage has a range of 2.5 V to VDD. The analog input range on AIN0 is 0 to VREF.

In dual-channel operation, the AIN1/VREF pin assumes its AIN1 function, providing a second analog input channel. In this case, the reference voltage for the part is provided via the VDD pin. As a result, the input voltage range on both the AIN0 and AIN1 inputs is 0 to VDD.

CMOS construction ensures low power dissipation of typically 2 mW for normal operation and 3 μW in power-down mode. The part is available in an 8-lead, 0.15-inch-wide narrow body SOIC and an 8-lead MSOP package.

Product Highlights
  1. Smallest 12-bit dual-/single-channel ADC; 8-lead MSOP package.
  2. Lowest power 12-bit dual-/single-channel ADC.
  3. Flexible power management options, including automatic power-down after conversion.
  4. Read-only ADC capability.
  5. Analog input range from 0 V to VREF.
  6. Versatile serial input/output port (SPI/QSPI/MICROWIRE/ DSP compatible).

Applications
  • Battery-powered systems (personal digital assistants, medical instruments, mobile communications)
  • Instrumentation and control systems
  • High speed modems
  • Part Models 10
    1ku List Price Starting From $5.64

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    Documentation

    Documentation

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

    PCN

    Jan 5, 2015

    - 14_0246

    Qualification of ASE Chungli, as an Alternate Assembly Site for Select MSOP Devices

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    May 15, 2012

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    Feb 8, 2010

    - 04_0080

    Qualification of the 8" C6 and Q Wafer Fab Processes at Analog Devices, Limerick, Ireland.

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    Filter by Model

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    Part Models

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    PCN

    Jan 5, 2015

    - 14_0246

    arrow down

    Qualification of ASE Chungli, as an Alternate Assembly Site for Select MSOP Devices

    AD7887ARMZ

    PRODUCTION

    AD7887ARMZ-REEL

    PRODUCTION

    AD7887ARMZ-REEL7

    PRODUCTION

    May 15, 2012

    - 10_0006

    arrow down

    Halogen Free Material Change for mini SOIC Products

    AD7887ARMZ

    PRODUCTION

    AD7887ARMZ-REEL

    PRODUCTION

    AD7887ARMZ-REEL7

    PRODUCTION

    AD7887WARMZ

    PRODUCTION

    Feb 8, 2010

    - 04_0080

    arrow down

    Qualification of the 8" C6 and Q Wafer Fab Processes at Analog Devices, Limerick, Ireland.

    AD7887ARMZ

    PRODUCTION

    AD7887ARMZ-REEL

    PRODUCTION

    AD7887ARMZ-REEL7

    PRODUCTION

    AD7887ARZ

    PRODUCTION

    AD7887ARZ-REEL7

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    AD7887BRZ

    PRODUCTION

    AD7887BRZ-REEL

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    Software & Part Ecosystem

    Software & Part Ecosystem

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    Evaluation Kit

    Evaluation Kits 1

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    EVAL-AD7887

    AD7887 Evaluation Board

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    EVAL-AD7887

    AD7887 Evaluation Board

    AD7887 Evaluation Board

    Features and Benefits

    • Full featured evaluation board for the AD7887
    • On-board power supplies
    • Standalone capability
    • System demonstration platform (SDP) compatible (EVAL-SDP-CB1Z)
    • PC software for control and data analysis (download from product page)

    Product Detail

    The EVAL-AD7887SDZ is a full featured evaluation board designed to allow easy evaluation of all the features of the AD7887 analog-to-digital converter (ADC). The evaluation board can be controlled via the SDP connector (J20). The SDP board (EVAL-SDP-CB1Z) allows the evaluation board to be controlled through the USB port of a PC using the software available for download from the EVAL-AD7887SDZ product page.
    The EVAL-AD7887SDZ software provides dynamic performance analysis in the form of waveform graphs, histograms, and FFT analysis for ADC performance evaluation.
    On-board components include: the AD8033 and the AD8034 FastFET high speed precision rail-to-rail op amps, the ADP3303 high accuracy 200 mA low dropout linear regulator, and the AD780 2.5 V/3.0 V ultrahigh precision band gap voltage reference.

    Online Resources
    • Documents needed
    • AD7887 data sheet
    • EVAL-AD7887SDZ user guide
    • Required software
    • EVAL-AD7887SDZ evaluation software
    • Design and integration files
    • Schematics, layout files, bill of materials
    Evaluation Kit Contents
    • EVAL-AD7887SDZ evaluation board
    • Evaluation software CD for the AD7887
    • Mains power supply adapter
    • Screw/nut kit
    Reference Designs

    Reference Designs 2

    Software Calibrated RF Measurement System

    Software Calibrated, 1 MHz to 8 GHz, 60 dB RF Power Measurement System Using the AD8318 Logarithmic Detector

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    CN0150

    Software Calibrated, 1 MHz to 8 GHz, 60 dB RF Power Measurement System Using the AD8318 Logarithmic Detector

    CN0150

    Circuits from the lab

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    Software Calibrated, 1 MHz to 8 GHz, 60 dB RF Power Measurement System Using the AD8318 Logarithmic Detector

    Features and Benefits

    • Software calibrated RF power measurement system
    • RMS, peak, and crest factor outputs
    • Functions from 1 MHz to 8 GHz
    View Detailed Reference Design external link
    Dual Axis Tilt Measurement System

    Tilt Measurement Using a Dual Axis Accelerometer

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