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AD7495:  1 MSPS, 12-Bit A/D Converter in MSOP-8 or SOIC-8

Product Details


The AD7475/AD7495 are 12-bit, high speed, low power, successive-approximation ADCs that operate from a single 2.7 V to 5.25 V power supply with throughput rates up to 1 MSPS. They contain a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies above 1 MHz.

The conversion process and data acquisition are controlled using CS and the serial clock, allowing the devices to interface with microprocessors or DSPs. The input signal is sampled on the falling edge of CS and conversion is initiated at this point. The conversion time is determined by the SCLK frequency. There are no pipeline delays associated with the part.

The AD7475/AD7495 use advanced design techniques to achieve very low power dissipation at high throughput rates. With 3 V supplies and a 1 MSPS throughput rate, the AD7475 consumes just 1.5 mA, while the AD7495 consumes 2 mA. With 5 V supplies and 1 MSPS, the current consumption is 2.1 mA for the AD7475 and 2.6 mA for the AD7495.

The analog input range for the parts is 0 V to REF IN. The 2.5 V reference for the AD7475 is applied externally to the REF IN pin, while the AD7495 has an on-board 2.5 V reference.

Product Highlights

  1. The AD7475 offers 1 MSPS throughput rates with 4.5 mW power consumption.
  2. Single-supply operation with VDRIVE function. The AD7475/AD7495 operate from a single 2.7 V to 5.25 V supply. The VDRIVE function allows the serial interface to connect directly to either 3 V or 5 V processor systems independent of VDD.
  3. Flexible power/serial clock speed management. The con-version rate is determined by the serial clock, allowing the conversion time to be reduced through the serial clock speed increase. The parts also feature shutdown modes to maximize power efficiency at lower throughput rates. This allows the average power consumption to be reduced while not converting. Power consumption is 1 μA when in full shutdown.
  4. No pipeline delay. The parts feature a standard successive approximation ADC with accurate control of the sampling instant via a CS input and once-off conversion control.

Applications

  • Battery-powered systems
  • Personal digital assistants
  • Medical instruments
  • Mobile communications
  • Instrumentation and control systems
  • Data acquisition systems
  • Optical sensors

FEATURES and BENEFITS

  • Specified for VDD of 2.7 V to 5.25 V
  • Low Power:
    4.5 mW Max at 1 MSPS with 3 V Supplies
    10.5 mW Max at 1 MSPS with 5 V Supplies
  • Wide Input Bandwidth: 68 dB SNR at 300 kHz Input Frequency
  • Flexible Power/Serial Clock Speed Management
  • Fast Throughput Rate: 1 MSPS
  • No Pipeline Delays
  • High-Speed Serial Interface
    SPI®/QSPI™/MICROWIRE™/DSP-Compatible
  • On-Board Reference 2.5 V (AD7495 Only)
  • Standby Mode: 1 µA Max
  • 8-lead MSOP and SOIC Packages

Functional Block Diagram for AD7495

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Documentation

Title Content Type File Type
AD7475/AD7495: 1 MSPS, 12-Bit ADCs Data Sheet (Rev B, 05/2005) (pdf, 446 kB) Data Sheets 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
AD74xx - No-OS Driver for Renesas Microcontroller Platforms Device Drivers HTML
AD74xx - No-OS Driver for Microchip Microcontroller Platforms Device Drivers HTML
IIO Single Channel Serial ADC Linux Driver (Wiki Site) Device Drivers HTML

Evaluation Kits & Symbols & Footprints

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

AD7495 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD7495AR Status: Production 8 ld SOIC 8 Ind Tube, 98 $7.14 $6.07 N  Material Info PCN Purchase
AD7495AR-REEL Status: Production 8 ld SOIC 8 Comm. Reel, 2500 - $6.07 N  Material Info PCN Purchase
AD7495AR-REEL7 Status: Production 8 ld SOIC 8 Comm. Reel, 1000 - $6.07 N  Material Info PCN Purchase
AD7495ARM Status: Production 8 ld MSOP 8 Ind Tube, 50 $7.14 $6.07 N  Material Info PCN Purchase
AD7495ARMZ Status: Production 8 ld MSOP 8 Ind Tube, 50 $6.18 $5.25 Y  Material Info PCN Purchase
AD7495ARMZ-REEL Status: Last Time Buy 8 ld MSOP 8 Ind Reel, 3000 - $5.25 Y  Material Info PCN/PDN Purchase
AD7495ARMZ-REEL7 Status: Production 8 ld MSOP 8 Ind Reel, 1000 - $5.25 Y  Material Info PCN Purchase
AD7495ARZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $6.18 $5.25 Y  Material Info PCN Purchase Sample
AD7495ARZ-REEL7 Status: Production 8 ld SOIC 8 Comm. Reel, 1000 - $5.25 Y  Material Info PCN Purchase
AD7495BRM-REEL Status: Last Time Buy 8 ld MSOP 8 Ind Reel, 3000 - $6.89 N  Material Info PCN/PDN Purchase
AD7495BRMZ Status: Production 8 ld MSOP 8 Ind Tube, 50 $7.02 $5.96 Y  Material Info PCN Purchase
AD7495BRZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $7.02 $5.96 Y  Material Info PCN Purchase
AD7495BRZ-REEL Status: Last Time Buy 8 ld SOIC 8 Comm. Reel, 2500 - $5.96 Y  Material Info PCN/PDN Purchase
AD7495BRZ-REEL7 Status: Production 8 ld SOIC 8 Comm. Reel, 1000 - $5.96 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.


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