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AD7329:  1 MSPS , 8-Channel, Software Selectable True Bipolar Input, 12-Bit Plus Sign A/D Converter

Product Details


The AD7329 is an 8-Channel, 12-Bit Plus Sign Successive Approximation ADC. The ADC has a high-speed serial interface that can operate at throughput rates up to 1 MSPS. The ADC has a high-speed serial interface that can operate at throughput rates up to 250 kSPS.

The AD7329 can accept True Bipolar Analog input signals. The Ad7329 has four software selectable ranges, ±10 V, ±5 V, ±2.5 V and 0 to 10 V. Each analog input channel can be independently programmed to one of the input ranges by setting the appropriate bits in the Range Registers.

The Analog Input Channels can be configured as single ended, fully differential or pseudo differential. Dedicated Control Register bits are used to configure the Analog inputs.

The ADC contains a 2.5 V Internal reference. The AD7329 also allows for external Reference operation. If a 3 V external reference is applied to the REFIN/OUT pin, the ADC can handle a True Bipolar ± 12 V Analog input range. VDD and VSS supplies of ± 12 V are required for this ± 12 V input range.

The AD7329 has multiplexer output pins and ADC input pins. These allow the user to insert buffers, differential amplifiers or antialiasing filters, if required, between the Multiplexer and the ADC. This means that for eight analog inputs only a single driver is required for the AD7329.

The AD7329 has a number of power down mode to reduce power consumption at lower throughput rates.

Product Highlights

  1. The AD7329 can accept True Bipolar Analog Input signals, ±10V, ±5V, ±2.5V and 0 to 10V unipolar signals.
  2. The Eight Analog Inputs can be configured as 8 Single-Ended inputs, 4 True Differential, 4 Pseudo Differential or 7 Pseudo Differential Inputs.
  3. SPI/QSPI/DSP/MICROWIRE compatible Interface.
  4. Low Power, TBD mW at maximum throughput rate.
  5. Channel Sequencer

FEATURES and BENEFITS

  • 12-Bit Plus Sign SAR ADC
  • Accepts True Bipolar Analog Inputs
  • Software Selectable input Ranges:
    ±10V, ±5V, ±2.5V, 0 to 10 V
  • Eight Analog Input Channels with Channel Sequencer
  • Single Ended, True Differential and Pseudo Differential Analog Input Capability
  • High Impedance Analog Inputs
  • Low Power: 21 mW
  • High Speed Serial Interface SPI/QSPI/DSP/MICROWIRE Compatible
  • MuxOUT and ADCIN pins allows separate access to Mux and ADC
  • iCMOS™ Process Technology
  • 24 Lead TSSOP package

Functional Block Diagram for AD7329

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Documentation

Title Content Type File Type
AD7329: 1 MSPS, 8-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC Data Sheet (Rev B, 01/2014) (pdf, 533 kB) Data Sheets PDF
AN-0972: How the AD7329 Helps Reduce Costs  (pdf, 138 kB) Application Notes PDF
UG-526: Evaluating the AD7329 1 MSPS, 12-Bit Plus Sign ADC  (pdf, 1367 kB) User Guides PDF
MS-2210: Designing Power Supplies for High Speed ADC  (pdf, 327 kB) Technical Articles PDF
Maximizing Eight-Channel Data-Acquisition System Performance Using a Single ADC Driver
This article shows how a single op amp can be used to drive the analog-to-digital converter (ADC) in an 8-channel data-acquisition system, reducing the cost and size of the overall system.
(ECN, July 23, 2009)
Technical Articles HTML
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Evaluation Kits & Symbols & Footprints

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Product Recommendations & Reference Designs

Companion Products

Suggested Companion Products


Recommended Input Buffer Amplifiers for the AD7329

  • For low noise and low frequency at high supply voltages( up to +-18V), we suggest the AD8597, ADA4627-1 or the dual AD8599.
  • For low noise and low frequency applications at medium supply voltages( up to +-13V), we suggest the AD8610, or the dual AD8620.

Recommended External References for the AD7329

  • For a precision 3.0V reference, we recommend AD780 or the REF193.
Recommended Power Solutions
  • For selecting voltage regulator products, use ADIsimPower.

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Price, packaging, availability

AD7329 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD7329BRUZ Status: Production 24 ld TSSOP 24 Ind Tube, 62 $7.44 $6.33 Y  Material Info PCN Purchase Sample
AD7329BRUZ-REEL Status: Production 24 ld TSSOP 24 Ind Reel, 2500 - $6.33 Y  Material Info PCN Purchase
AD7329BRUZ-REEL7 Status: Production 24 ld TSSOP 24 Ind Reel, 1000 - $6.33 Y  Material Info PCN Purchase
Price Table Help

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.

AD7329 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-AD7329SDZ Status: Production Evaluation Board - Yes -
EVAL-SDP-CB1Z Status: Production Evaluation Controller Board $99.00 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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