3 V/5 V Low Power, Synchronous Voltage-to-Frequency Converter
The AD7740 is the world's smallest, lowest-cost, 12-Bit accurate VFC.
Since this is a synchronous converter, the output frequency is related to the fixed master clock frequency so temperature stability is much improved over asynchronous VFCs. With a 1 MHz input clock frequency, the FS output frequency is 900 kHz. The voltage reference input can be tied to the supply, if required.
Historically the primary applications for VFCs have been either to implement low cost A/D conversion or to achieve simple isolation.
The AD7740 is being offered in an 8-pin MicroSOIC package plus an 8-lead SOT-23 package. The SOT-packaged devices are only available on T&R. Two operating temperature ranges are available; from 0°C to +85°C and from -40°C to +105°C.
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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.
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.