3V/5V, 1 mW, 2-Channel Differential, 16-Bit Sigma-Delta ADC
The AD7705 and AD7706 are complete 16-bit, low-cost, Sigma Delta ADCs intended for dc and low-frequency ac measurement applications. Their low power (1 mW max @ 3 V) allows them to be used in loop-powered, battery-powered or locally-powered applications. The on-chip Programmable Gain Amplifier with gain settings from I through 128 can accommodate both low-level and high-level analog inputs with no external signal conditioning hardware.
The AD7705 has two differential channels while the AD7706 has one differential and two pseudo-differential channels. Differential reference inputs also allow maximum flexibility in tailoring the device for use in ratiometric applications.
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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.
Recommended Digital Isolators
- For cost sensitive designs , we recommend the ADUM7440, ADUM7441 or the ADUM7442 .
- For digital isolators with integrated isolated power , we recommend the ADUM5401, ADUM5402 or the ADUM5403 .
- For process control applications , we recommend the ADUM1400 or the ADUM1200 .
- For isolated USB designs in healthcare and industrial control , we recommend the ADUM4160 .
Ask the Applications Engineer-27: What problems am I most likely to run into...
(Analog Dialogue, Vol. 33, No. 2, February, 1999)
MS-2210: Designing Power Supplies for High Speed ADC
Delta-Sigma Rocks RF, As ADC Designers Jump On Jitter
(Electronic Design, 1/12/06)
Harness the Power of Sigma-Delta and Switched Capacitor Technologies in...
... You can have low-power operation, 16-bit accuracy, and onchip calibration by using state-of-the-art design...
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.
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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.