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AD7734:  4-Channel, ±10 V Input Range, 24-Bit Sigma-Delta A/D Converter

The AD7734 is a high precision, high throughput analog front end. True 16-bit peak-to-peak resolution is achievable with total conversion times of 500 µs (2 kHz channel switching) making it ideally suitable for high resolution multiplexing applications.

The AD7734 is based on a sigma-delta architecture and features up to 24 bits of no missing codes performance. The part can be configured ...More

AD7734:  4-Channel, ±10 V Input Range, 24-Bit Sigma-Delta A/D Converter

Product Description

The AD7734 is a high precision, high throughput analog front end. True 16-bit peak-to-peak resolution is achievable with total conversion times of 500 µs (2 kHz channel switching) making it ideally suitable for high resolution multiplexing applications.

The AD7734 is based on a sigma-delta architecture and features up to 24 bits of no missing codes performance. The part can be configured via a simple digital interface, which allows users to balance the noise performance against data throughput up to a 12.3 kHz conversion rate. The analog front end features 4 single-ended input channels with unipolar or true bipolar input ranges to ±10 V while operating from a single 5 V analog supply. The part has an over-range and under-range detection capability and accepts an analog input over-voltage to ±16.5 V not degrading the performance of the adjacent channels. The differential reference input features “No Reference” detect capability.

The AD7734 contains self-calibration and per channel system calibration options. The digital serial interface can be configured for three wire operation and is compatible with microcontrollers and digital signal processors. All interface inputs are Schmitt triggered.

The part is specified for operation over the extended industrial temperature range of –40ºC to +105ºC and is available in 28-lead TSSOP package.

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  • High resolution ADC
    - 24 bits no missing codes
    - ±0.0025% nonlinearity
  • 3-wire serial interface
    - SPI®, QSPI™, MICROWIRE™, and DSP compatible
    - Schmitt trigger on logic inputs
  • Single-supply operation
    - 5 V analog supply
    - 3 V or 5 V digital supply
  • Package: 28-lead TSSOP
  • Optimized for fast channel switching
    - 18-bit p-p resolution (21 bits effective) at 500 Hz
    - 16-bit p-p resolution (19 bits effective) at 2 kHz
    - 14-bit p-p resolution (18 bits effective) at 15 kHz
    - On-chip per channel system calibration
  • 4 single-ended analog inputs
    - Input ranges +5 V, ±5 V, +10 V, ±10 V
    - Overvoltage tolerant
    - Up to ±16.5 V not affecting adjacent channel
    - Up to ±50 V absolute maximum
  • Resolution (Bits): 24bit
  • T-Put Rate: 15.4kSPS
  • # Chan: 4
  • Supply V: Single(+5)
  • Pwr Diss: 100mW
  • Interface: Ser,SPI
  • Ain Range: Bip 10V,Bip 5.0V,Uni 10V,Uni 5.0V
  • SNR (dB): n/a
  • Pkg Type: SOP

Functional Block Diagram for AD7734

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Package Description
The package for this IC (i.e. DIP, SOIC, BGA). An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board.

For detailed drawings and chemical composition please consult our  Package Site

Pin Count
Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

Temperature Range
This is the acceptable operating range of the device. The various ranges specified are as follows:
  • Commercial: 0 to +70 degrees Celsius
  • Military : -55 to +125 degrees Celsius
  • Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
  • Automotive: -40 to +125 degrees Celsius
Price
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.

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Due to environmental concerns, ADI offers many of our products in lead-free versions. For more information about lead-free parts, please consult our Pb (Lead) free information page.

View PCN
This is the list of Product Change Notifications (PCN) published on the web for this model. Click on the link to access PCN Information.Only select pre-2009 PCN�s are available on-line. To obtain a pre-2009 PCN, contact your ADI Sales Rep. For more information on ADI's PCN process, please visit our PCN Policy Statement page

*The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
**Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.