16-Channel, 1MSPS, 12-Bit ADC with Sequencer in 28-Lead TSSOP
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)
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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.
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.
Recommended Driver Amplifiers
- For low distortion, low noise, dual supplies , we recommend the AD8599 .
- For single supply, high speed, low power , we recommend the AD8031 or the ADA4841-1 .
- 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 .
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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.