AD7490

16-Channel, 1MSPS, 12-Bit ADC with Sequencer in 28-Lead TSSOP
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Product Details

The AD7490 is a 12-bit high speed, low power, successive- approximation ADC. The part operates from a single 2.7 V to 5.25 V power supply and features throughput rates up to 1 MSPS. The part contains a low-noise, wide bandwidth track/hold amplifier that can handle input frequencies in excess of 1 MHz.

The conversion process and data acquisition are controlled using CS and the serial clock, allowing the device to interface 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 AD7490 uses advanced design techniques to achieve very low power dissipation at high throughput rates. For maximum throughput rates, the AD7490 consumes just 1.8 mA with 3 V supplies, and 2.5 mA with 5 V supplies. By setting the relevant bits in the control register, the analog input range for the part can be selected to be a 0 V to REFIN input or a 0 V to 2 × REFIN input, with either straight binary or twos complement output coding. The AD7490 features 16 single-ended analog inputs with a channel sequencer to allow a preprogrammed selection of channels to be converted sequen-tially. The conversion time is determined by the SCLK or twos complement output coding. The AD7490 features 16 single-ended analog inputs with a channel sequencer to allow a preprogrammed selection of channels to be converted sequen-tially. The conversion time is determined by the SCLK.

The AD7490-EP supports defense and aerospace applications (AQEC)

Product Lifecycle

checked Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits

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Product Details

The EVAL-AD7490SDZ is a fully featured evaluation kit for the AD7490. This board operates in standalone mode or in conjunction with the System Development Platform, EVAL-SDP-CB1Z . When operated with the System Development Platform 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 System Development Platform . When operated in standalone mode the ADZS-BRKOUT-EX3 break out board is recommended for access to various control pins.


The SDP Controller board is a separate list item in the ordering guide below (EVAL-SDP-CB1Z). If you have not previously purchased an SDP Controller board, please do so to ensure a full evaluation setup.

Product Recommendations

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AD7490 Companion Parts

Recommended Driver Amplifiers

  • For single supply, high speed, low power , we recommend the AD8031 or the ADA4841-1 .
  • For low distortion, low noise, dual supplies , we recommend the AD8599 .
  • For high performance, high speed , we recommend the ADA4899-1, ADA4897-1 or the AD8021 .
  • For low frequency and low bias current , we recommend the ADA4627-1 .
  • For precision, low noise, single supply , we recommend the AD8605 .

Recommended External Voltage References

  • For low noise, high output current applications , we recommend the ADR431 .
  • For applications requiring best accuracy, low noise, low drift , we recommend the ADR421, ADR4525, AD780 or the AD780 .
  • For wide supply applications , we recommend the AD780, ADR03 or the AD780 .
  • For cost sensitive applications , we recommend the AD1582, ADR381 or the ADR391 .

Recommended Digital Isolators

  • For a 3-channel, 90 Mbps data rate , we recommend the ADUM1301 .
  • For a 4- channel, 90Mbps data rate , we recommend the ADUM1401 .
  • For a 4-channel, 150Mbps data rate , we recommend the ADUM3441 .

Design Resources

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

AD7490 Material Declaration
PCN-PDN Information Quality And Reliability Symbols and Footprints

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Reviews

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Overview

2 Reviews
2 out of 2 (100%) customers recommend this product.
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Most Helpful Review

by Sunil
The device works fine as expected with excellent performance

Most Recent Review

by Didi
AD7490 has excellent performance compared to other equivalent products.

All Reviews

by Didi, 4 Mar 14
This product has excellent performance
AD7490 has excellent performance compared to other equivalent products.
Was this Helpful?Helpful(0)
by Sunil, 15 Jan 14
Good
The device works fine as expected with excellent performance
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Sample & Buy

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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.


Price Table Help

 
Evaluation Boards Pricing displayed is based on 1-piece.
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.