AD7740KRMZ Voltage to Frequency Converters by Analog Devices

Status: Production
Series: AD7740
RoHS: Compliant
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The AD7740 is a low-cost, ultrasmall synchronous Voltage-to-FrequencyConverter (VFC). It works from a single 3.0 V to3.6 V or 4.75 V to 5.25 V supply consuming 0.9 mA. The AD7740is available in an 8-lead SOT-23 and also in an 8-lead MSOPpackage. Small package, low cost and ease of use were majordesign goals for this product. The part contains an on-chip 2.5 Vbandgap reference but the user may overdrive this using anexternal reference. This external reference range includes VDD.The full-scale output frequency is synchronous with the clocksignal on the CLKIN pin. This clock can be generated with theaddition of an external crystal (or resonator) or supplied from aCMOS-compatible clock source. The part has a maximuminput frequency of 1 MHz.For an analog input signal that goes from 0 V to VREF, the outputfrequency goes from 10% to 90% of fCLKIN. In buffered mode,the part provides a very high input impedance and accepts arange of 0.1 V to VDD – 0.2 V on the VIN pin. There is alsoan unbuffered mode of operation that allows VIN to go from–0.15 V to VDD + 0.15 V. The modes are interchangeable usingthe BUF pin.The AD7740 (Y Grade) is guaranteed over the automotivetemperature range of –40°C to +105°C. The AD7740 (K Grade)is guaranteed from 0°C to 85°C.Product Highlights The AD7740 is a single channel, single-ended VFC. It is available in 8-lead SOT-23 and 8-lead MSOP packages, and is intended for low-cost

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Prices starting from US$1.66

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Features

Synchronous operation
Full-scale frequency set by external system clock
8-lead SOT-23 and 8-lead MSOP packages
3 V or 5 V operation
Low power: 3 mW (Typ)
Nominal input range: 0 to VREF
True –150 mV capability without charge pump
VREF range: 2.5 V to VDD
Internal 2.5 V reference
1 MHz max input frequency
Selectable high impedance buffered input
Minimal external components required

Alternative Descriptions

LOW COST SMALL SYNCHRONOUS VFC | Analog Devices
V/F Converter, 0.012%, Msop | Newark Electronics
V/F CONVERTER, 0.012%, MSOP | element14
Analog Devices V/F Converter IC 1MHz MSOP | Distrelec


Frequently Asked Questions

Where can I find additional details, specifications and documents for a AD7740KRMZ?

Additional datasheets, footprints and schematics for AD7740KRMZ are listed on our Part Details page. You can also find images and similar parts to AD7740KRMZ on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for AD7740KRMZ on our Product Comparison page. Access via the 'View Pricing & Stock' button to view AD7740KRMZ price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does AD7740KRMZ fall under?

The AD7740KRMZ is listed under Voltage to Frequency Converters.

Can I view similar or alternative parts?

You can view similar parts to AD7740KRMZ when available in the Voltage to Frequency Converters range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the AD7740KRMZ you can contact the distributor directly for product support, shipping queries etc.

Is the AD7740KRMZ RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

Which authorised distributors for AD7740KRMZ have stock available?

Authorised distributors including Analog Devices, Newark Electronics, element14, Farnell and Distrelec have stock available or on a lead time for AD7740KRMZ.

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