Add to Signal Chain Designer

AD7492:  1MSPS, 4mW Internal Ref & Clk, 12-Bit Parallel ADC

Product Details


The AD7492, AD7492-4, and AD7492-5 are 12-bit high speed, low power, successive approximation ADCs. The parts operate from a single 2.7 V to 5.25 V power supply and feature throughput rates up to 1.25 MSPS. They contain a low noise, wide bandwidth track/hold amplifier that can handle bandwidths up to 10 MHz.

The conversion process and data acquisition are controlled using standard control inputs allowing for easy interface to microprocessors or DSPs. The input signal is sampled on the falling edge of CONVST and conversion is also initiated at this point. The BUSY pin goes high at the start of conversion and goes low 880 ns (AD7492/AD7492-4) or 680 ns (AD7492-5) later to indicate that the conversion is complete. There are no pipeline delays associated with the part. The conversion result is accessed via standard CS and RD signals over a high speed parallel interface.

The AD7492 uses advanced design techniques to achieve very low power dissipation at high throughput rates. With 5 V supplies and 1.25 MSPS, the average current consumption AD7492-5 is typically 2.75 mA. The part also offers flexible power/throughput rate management.

It is also possible to operate the part in a full sleep mode and a partial sleep mode, where the part wakes up to do a conversion and automatically enters a sleep mode at the end of conversion. The type of sleep mode is hardware selected by the PS/FS pin.

Using these sleep modes allows very low power dissipation numbers at lower throughput rates.

The analog input range for the part is 0 V to REFIN. The 2.5 V reference is supplied internally and is available for external referencing. The conversion rate is determined by the internal clock.

Product Highlights

  1. High Throughput with Low Power Consumption. The AD7492-5 offers 1.25 MSPS throughput with 16 mW power consumption.
  2. Flexible Power/Throughput Rate Management. The conversion time is determined by an internal clock. The part also features two sleep modes, partial and full, to maximize power efficiency at lower throughput rates.
  3. No Pipeline Delay. The part features a standard successive approximation ADC with accurate control of the sampling instant via a CONVST input and once-off conversion control.
  4. Flexible Digital Interface. The VDRIVE feature controls the voltage levels on the I/O digital pins.
  5. Fewer Peripheral Components. The AD7492 optimizes PCB space by using an internal reference and internal CLK.

FEATURES and BENEFITS

  • Specified for VDD of 2.7 V to 5.25 V
  • Throughput Rate of 1 MSPS—AD7492
  • Throughput Rate of 1.25 MSPS—AD7492-5
  • Low Power:
    4 mW Typ at 1 MSPS with 3 V Supplies
    11 mW Typ at 1 MSPS with 5 V Supplies
  • Wide Input Bandwidth
    70 dB Typ SNR at 100 kHz Input Frequency
  • 2.5 V Internal Reference
  • On-Chip CLK Oscillator
  • Flexible Power/Throughput Rate Management
  • No Pipeline Delays
  • High-Speed Parallel Interface
  • Sleep Mode: 50 nA Typ
  • 24-Lead SOIC and TSSOP Packages

Functional Block Diagram for AD7492

Similar Products

Low Resolution - Single Channel Unipolar/Bipolar 8/10/12-Bit PulSAR ADCs

Documentation

Title Content Type File Type
AD7492: 1.25 MSPS, 16 mW Internal REF and CLK, 12-Bit Parallel ADC Data Sheet (Rev A, 05/2006) (pdf, 506 kB) Data Sheets PDF
UG-371: Evaluation Board for the AD7492 1.25 MSPS, 16 mW Internal REF and CLK, 12-Bit Parallel ADC  (pdf, 4471 kB) User Guides PDF
MS-2210: Designing Power Supplies for High Speed ADC  (pdf, 327 kB) Technical Articles 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

Design Tools,Models,Drivers & Software

Title Content Type File Type
BeMicro FPGA Project for AD7492 with Nios driver FPGA HDL HTML
AD7492 FMC-SDP Interposer & Evaluation Board / Xilinx KC705 Reference Design FPGA HDL 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.

SampleSample & Buy

Price, packaging, availability

AD7492 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD7492AR Status: Last Time Buy 24 ld SOIC - Wide 24 Ind Tube, 31 $9.48 $8.05 N  Material Info PCN/PDN Purchase
AD7492ARU Status: Production 24 ld TSSOP 24 Ind Tube, 62 $9.48 $8.05 N  Material Info PCN Purchase
AD7492ARUZ Status: Production 24 ld TSSOP 24 Ind Tube, 62 $8.21 $6.97 Y  Material Info PCN Purchase
AD7492ARUZ-4 Status: Production 24 ld TSSOP 24 Ind Tube, 62 $8.21 $6.97 Y  Material Info PCN Purchase
AD7492ARUZ-4REEL Status: Last Time Buy 24 ld TSSOP 24 Ind Reel, 2500 - $6.97 Y  Material Info PCN/PDN Purchase
AD7492ARUZ-4REEL7 Status: Production 24 ld TSSOP 24 Ind Reel, 1000 - $6.97 Y  Material Info PCN Purchase
AD7492ARUZ-5 Status: Production 24 ld TSSOP 24 Ind Tube, 62 $9.03 $7.67 Y  Material Info PCN Purchase
AD7492ARUZ-5-REEL Status: Last Time Buy 24 ld TSSOP 24 Ind Reel, 2500 - $7.67 Y  Material Info PCN/PDN Purchase
AD7492ARUZ-5-REEL7 Status: Production 24 ld TSSOP 24 Ind Reel, 1000 - $7.67 Y  Material Info PCN Purchase
AD7492ARUZ-REEL Status: Production 24 ld TSSOP 24 Ind Reel, 2500 - $6.97 Y  Material Info PCN Purchase
AD7492ARUZ-REEL7 Status: Production 24 ld TSSOP 24 Ind Reel, 1000 - $6.97 Y  Material Info PCN Purchase
AD7492ARZ Status: Production 24 ld SOIC - Wide 24 Comm. Tube, 31 $8.21 $6.97 Y  Material Info PCN Purchase Sample
AD7492ARZ-REEL Status: Last Time Buy 24 ld SOIC - Wide 24 Comm. Reel, 1000 - $6.97 Y  Material Info PCN/PDN Purchase
AD7492ARZ-REEL7 Status: Production 24 ld SOIC - Wide 24 Comm. Reel, 400 - $6.97 Y  Material Info PCN Purchase
AD7492BR Status: Production 24 ld SOIC - Wide 24 Ind Tube, 31 $10.86 $9.23 N  Material Info PCN Purchase
AD7492BR-REEL Status: Last Time Buy 24 ld SOIC - Wide 24 Ind Reel, 1000 - $9.23 N  Material Info PCN/PDN Purchase
AD7492BR-REEL7 Status: Last Time Buy 24 ld SOIC - Wide 24 Ind Reel, 400 - $9.23 N  Material Info PCN/PDN Purchase
AD7492BRU-REEL Status: Last Time Buy 24 ld TSSOP 24 Ind Reel, 2500 - $9.23 N  Material Info PCN/PDN Purchase
AD7492BRUZ Status: Production 24 ld TSSOP 24 Ind Tube, 62 $9.40 $7.99 Y  Material Info PCN Purchase
AD7492BRUZ-5 Status: Production 24 ld TSSOP 24 Ind Tube, 62 $10.34 $8.79 Y  Material Info PCN Purchase
AD7492BRZ Status: Production 24 ld SOIC - Wide 24 Ind Tube, 31 $9.40 $7.99 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.

AD7492 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-AD7492SDZ Status: Production Evaluation Board $99.00 Yes -
EVAL-SDP-CB1Z Status: Production Evaluation Controller Boa $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.

Check Inventory & Purchase

View Sales and Distribution Offices

沪ICP备09046653号
content here.
content here.

Review this Product

Close