AD7938BCPZ

AD7938BCPZ

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AD7938BCPZ
IC ADC 12BIT SAR 32LFCSP
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$10.37

Price update:a months ago
Available in stock: 600
45
Serves customers in 45 countries
1000+
Worldwide Manufacturers
$140M
$140M Growth in 5 Years
50.0M+
50M Parts Shipped in 5 Years
Analog Devices Inc.

Analog Devices Inc.

Analog Devices (NASDAQ: ADI) leads in crafting high-performance analog, mixed-signal, and digital signal processing integrated circuits. For decades, they've tackled signal processing challenges across global electronics. With over 100,000 clients, their products convert real-world phenomena into electrical signals. Merged with Maxim Integrated, they offer top-tier mixed-signal and power management technologies, solving complex problems from DC to 100 GHz and sensor to cloud.

View All Product from Analog Devices Inc.
AD7938BCPZ Products

The AD7938/AD7939 are 12-bit and 10-bit, high speed, lowpower, successive approximation (SAR) analog-to-digitalconverters (ADCs). The parts operate from a single 2.7 V to5.25 V power supply and feature throughput rates up to1.5 MSPS. The parts contain a low noise, wide bandwidth,differential track-and-hold amplifier that can handle inputfrequencies up to 50 MHz.

The AD7938/AD7939 feature eight analog input channels witha channel sequencer that allows a preprogrammed selection ofchannels to be converted sequentially. These parts can operatewith either single-ended, fully differential, or pseudodifferential analog inputs.

The conversion process and data acquisition are controlledusing standard control inputs that allow easy interfacing withmicroprocessors and DSPs. The input signal is sampled on thefalling edge of CONVST and the conversion is also initiated atthis point.

The AD7938/AD7939 have an accurate on-chip 2.5 V referencethat can be used as the reference source for the analog-to-digitalconversion. Alternatively, this pin can be overdriven to providean external reference.

These parts use advanced design techniques to achieve verylow power dissipation at high throughput rates. They alsofeature flexible power management options. An on-chip controlregister allows the user to set up different operating conditions,including analog input range and configuration, output coding,power management, and channel sequencing.

Product Highlights

  • High throughput with low power consumption.
  • Eight analog inputs with a channel sequencer.
  • Accurate on-chip 2.5 V reference.
  • Single-ended, pseudo differential, or fully differentialanalog inputs that are software selectable.
  • Single-supply operation with VDRIVE function. The VDRIVEfunction allows the parallel interface to connect directly to3 V or 5 V processor systems independent of VDD.
  • No pipeline delay.
  • Accurate control of the sampling instant via a CONVSTinput and once-off conversion control.
  • Feature

    • Throughput rate: 1.5 MSPS
    • Specified for VDD of 2.7 V to 5.25 V
    • Power consumption
      • 6 mW maximum at 1.5 MSPS with 3 V supplies
      • 13.5 mW maximum at 1.5 MSPS with 5 V supplies
    • 8 analog input channels with a sequencer
    • Software-configurable analog inputs
      • 8-channel single-ended inputs
      • 4-channel fully differential inputs
      • 4-channel pseudo differential inputs
      • 7-channel pseudo differential inputs
    • Accurate on-chip 2.5 V reference
    • ±0.2% maximum at 25°C, 25 ppm/°C maximum
    • 69 dB SINAD at 50 kHz input frequency
    • No pipeline delays
    • High speed parallel interface—word/byte modes
    • Full shutdown mode: 2 μA maximum
    • 32-lead LFCSP and TQFP packages

    Product Attributes

    TYPE DESCRIPTION Select all
    Voltage - Supply, Analog 2.7V ~ 5.25V
    Number of Bits 12
    Voltage - Supply, Digital 2.7V ~ 5.25V
    Sampling Rate (Per Second) 1.5M
    Number of Inputs 4, 7, 8
    Operating Temperature -40°C ~ 85°C
    Input Type Differential, Pseudo-Differential, Single Ended
    Package / Case 32-VFQFN Exposed Pad, CSP
    Data Interface Parallel
    Supplier Device Package 32-LFCSP-VQ (5x5)
    Configuration MUX-S/H-ADC
    Mounting Type Surface Mount
    Ratio - S/H:ADC 1:1
    Number of A/D Converters 1
    Architecture SAR
    Package Tray
    Reference Type External, Internal
    Product Status Active

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    $10.37

    Price update:a months ago
    Available in stock: 600
    Analog Devices Inc.

    Analog Devices Inc.

    Analog Devices (NASDAQ: ADI) leads in crafting high-performance analog, mixed-signal, and digital signal processing integrated circuits. For decades, they've tackled signal processing challenges across global electronics. With over 100,000 clients, their products convert real-world phenomena into electrical signals. Merged with Maxim Integrated, they offer top-tier mixed-signal and power management technologies, solving complex problems from DC to 100 GHz and sensor to cloud.

    View All Product from Analog Devices Inc.

    Blog