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AD7924:  4-Channel, 1 MSPS, 12-Bit A/D Converter with Sequencer in 16-Lead TSSOP

Product Details


The AD7904/AD7914/AD7924 are, respectively, 8-bit, 10-bit, and 12-bit, high speed, low power, 4-channel successive approxi-mation ADCs. The parts operate from a single 2.7 V to 5.25 V power supply and feature throughput rates up to 1 MSPS. The parts contain a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 8 MHz.

The conversion process and data acquisition are controlled using CS and the serial clock signal, allowing the device to easily inter-face with microprocessors or DSPs. The input signal is sampled on the falling edge of CS and conversion is also initiated at this point. There are no pipeline delays associated with the part.

The AD7904/AD7914/AD7924 use advanced design techniques to achieve very low power dissipation at maximum throughput rates. At maximum throughput rates, the AD7904/AD7914/ AD7924 consume 2 mA maximum with 3 V supplies; with 5 V supplies, the current consumption is 2.7 mA maximum.

Through the configuration of the control register, the analog input range for the part can be selected as 0 V to REFIN or 0 V to 2 × REFIN, with either straight binary or twos complement output coding. The AD7904/AD7914/AD7924 each feature four single-ended analog inputs with a channel sequencer to allow a pre-programmed selection of channels to be converted sequentially.

The conversion time for the AD7904/AD7914/AD7924 is determined by the SCLK frequency, which is also used as the master clock to control the conversion.

FEATURES and BENEFITS

  • Fast throughput rate: 1 MSPS
  • Specified for AVDD of 2.7 V to
    5.25 V
  • Low power:
    6 mW maximum at 1 MSPS with 3 V supplies
    13.5 mW maximum at 1 MSPS with 5 V supplies
  • 4 single-ended inputs with sequencer
  • Wide input bandwidth:
    AD7924, 70 dB SNR at 50 kHz input frequency
  • Flexible power/serial clock speed management
  • No pipeline delays
  • High speed serial interface: SPI/QSPI™/ MICROWIRE™/DSP compatible
  • Shutdown mode: 0.5 μA maximum
  • 16-lead TSSOP package
  • Qualified for automotive applications

AD7924 Functional Block Diagram

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Documentation

Title Content Type File Type
AD7904/AD7914/AD7924: 4-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 16-Lead TSSOP Data Sheet  (Rev C, 06/2013) (pdf, 435 kB) Data Sheets PDF
AD7924 Known Good Die Data Sheet (Rev 0, 10/2011) (pdf, 144 kB) Data Sheets PDF
MS-2210: Designing Power Supplies for High Speed ADC  (pdf, 327 kB) Technical Articles PDF
Brochure: Monitor and Control Solutions for Communications Systems Overview HTML
Optical and High Speed Networking  (pdf, 2236 kB)
Analog Devices’ optical and high speed networking ICs solve a depth and breadth of challenges faced by today’s designers of datacom and telecom systems, optical modules, and subsystems. Analog Devices products address a wide range of networking applications from O/E/O conversion, clock recovery, and backplane transmission to monitoring and control of optical power, power management, and clock generation and distribution.
Overview PDF
8- to 18-Bit SAR ADCs ... From the Leader in High Performance Analog  (pdf, 1885 kB)
8- to 18-Bit SAR ADCs with Sample Rates up to 3 MSPS -- The latest additions to ADI’s ADC portfolio offer unrivaled functionality in terms of channel count and power supply voltage, optimal power/speed ratios, and the smallest packages to meet the demands of any data acquisition application, including portable, industrial, medical, wireless, and communications.
Overview PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

Product Recommendations & Reference Designs

Companion Products

Suggested Companion Products


Recommended Input Buffer Amplifiers for the AD7924
  • For low distortion, low noise, dual supplies, we recommend the AD8599.
  • For precision, low noise, low cost, single supply, we recommend the AD8605 family of operational amplifiers.
  • For single supply, high speed, low power, we suggest the ADA4857-1, ADA4841-1 or the AD8031.
Recommended Precison References - 2.5V for the AD7924
  • For applications requiring the lowest noise performance and output trim adjust, we recommend the ADR441.
  • For high output current applications, we recommend the ADR431 or the REF192.
  • For wide supply applications, we recommend the AD780.
  • For cost sensitive applications, we suggest the AD1582 or the ADR391.
Recommended Power Solutions

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Price, packaging, availability

AD7924 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD7924-KGD-DF Status: Production CHIPS OR DIE 0 Tray, 5000 - $23.80 Y  Material Info Notify Me Purchase
AD7924BRU Status: Production 16 ld TSSOP 16 Ind Tube, 96 $6.18 $5.26 N  Material Info PCN Purchase
AD7924BRU-REEL7 Status: Obsolete 16 ld TSSOP 16 Ind Reel, 1000 - - N  Material Info PCN/PDN Contact ADI
AD7924BRUZ Status: Production 16 ld TSSOP 16 Comm. Tube, 96 $5.35 $4.55 Y  Material Info PCN Purchase Sample
AD7924BRUZ-REEL Status: Production 16 ld TSSOP 16 Comm. Reel, 2500 - $4.55 Y  Material Info PCN Purchase
AD7924BRUZ-REEL7 Status: Production 16 ld TSSOP 16 Comm. Reel, 1000 - $4.55 Y  Material Info PCN Purchase
AD7924WYRUZ-REEL7 Status: Production TSSOP 4.4 MM 16 Ind Reel, 1000 - $4.87 Y  Material Info PCN Purchase Sample
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.


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