AD7329

PRODUCTION

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

Data Sheet (Rev. C) Product Selection Table
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Overview

  • 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

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
AD7329
1 MSPS , 8-Channel, Software Selectable True Bipolar Input, 12-Bit Plus Sign A/D Converter
AD7329 Functional Block Diagram AD7329 Pin Configuration
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Documentation

Data Sheet 1

User Guide 1

Application Note 1

Technical Articles 2

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
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ADA4841-1
PRODUCTION Low Power, Low Noise and Distortion, Rail-to-Rail Output Amplifier
ADA4841-2
PRODUCTION Low Power, Low Noise and Distortion, Rail-to-Rail Output Amplifier
Voltage References 5
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PRODUCTION 2.5V Micropower, Low Noise Precision Voltage Reference with Shutdown
REF193
PRODUCTION 3.0V Precision Micropower, Low Dropout, Low Voltage Reference
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Tools & Simulations

IBIS Model 1

Evaluation Kits

EVAL-AD7329

AD7329 Evaluation Board

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Product Details

The EVAL-AD7329CBZ is a fully featured evaluation kit for the AD7329. 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.
EVAL-AD7329
AD7329 Evaluation Board

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