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AD7740KRMZ Analog Devices Inc. Data Acquisition - V/F and F/V Converters image
  • AD7740KRMZ Analog Devices Inc. Data Acquisition - V/F and F/V Converters image
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Analog Devices Inc. AD7740KRMZ

Manufacturer
Analog Devices Inc.
Mfr. Part #
AD7740KRMZ
WLX Part #
A22507004222
Package
8-TSSOP, 8-MSOP (0.118, 3.00mm Width)
Datasheet
AD7740KRMZ Datasheet (PDF)
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AD7740KRMZ Parameter Description

The AD7740 is a low-cost, ultrasmall synchronous Voltage-to-Frequency Converter (VFC). It works from a single 3.0 V to 3.6 V or 4.75 V to 5.25 V supply consuming 0.9 mA. The AD7740 is available in an 8-lead SOT-23 and also in an 8-lead MSOP package. Small package, low cost and ease of use were major design goals for this product. The part contains an on-chip 2.5 V bandgap reference but the user may overdrive this using an external reference. This external reference range includes VDD.

The full-scale output frequency is synchronous with the clock signal on the CLKIN pin. This clock can be generated with the addition of an external crystal (or resonator) or supplied from a CMOS-compatible clock source. The part has a maximum input frequency of 1 MHz.

For an analog input signal that goes from 0 V to VREF, the output frequency goes from 10% to 90% of fCLKIN. In buffered mode, the part provides a very high input impedance and accepts a range of 0.1 V to VDD – 0.2 V on the VIN pin. There is also an unbuffered mode of operation that allows VIN to go from –0.15 V to VDD + 0.15 V. The modes are interchangeable using the BUF pin.

The AD7740 (Y Grade) is guaranteed over the automotive temperature range of –40°C to +105°C. The AD7740 (K Grade) is guaranteed from 0°C to 85°C.

Product Highlights

  1. 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 applications. The AD7740 offers considerable space saving over alternative solutions.
  2. The AD7740 operates from a single 3.0 V to 3.6 V or 4.75 V to 5.25 V supply and consumes typically 0.9 mA when the input is unbuffered. It also contains an automatic power-down function.
  3. The AD7740 does not require external resistors and capacitors to set the output frequency. T

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1. Shipping & Delivering
After receiving your payment, we will ship the goods for you within the delivery period and send the shipping number by email

2. Shipping cost already shown on the quote, please check your email.

3.We will evaluate the shipping cost according to the price of the product you purchased and the shipping address. If you need to specify the shipping method, you can notify us by email.

4. We support DHL, FedEx, UPS, SF to ship your goods by default



5.Regarding in stock parts, orders can generally be ready to ship within 4 hours.
We ship daily at 5pm.（UTC/GMT+8）
Once the goods are shipped, estimated delivery time depends on the shipping methods you chose:
FedEx International, 5-7 business days.
DHL Express, 5-7 business days.

The following are some common countries' logistic time.



Note: 

The above table is for reference only, there may will have some delay for the uncontrollable factors.




Refund & Return
Refund
Refunds are normally accepted within 30 days from the date of the parcel delivered. Please contact our support team for any issues immediately once you receive your parcels includes but is not limited to below reasons:
Not received the parcel normally
Yes, we guarantee a refund or to resend your order if you haven't received the parcel beyond the regular shipping days, except the case which customer takes the responsibility for the unsuccessful delivery such as providing an incorrect shipping address, can not complete the customs clearance due to customer's reason, etc. Note: If the following issues occurs: extreme weather, post office delay, customs clearance, local protest, etc. In this case, we are incapable of guaranteeing on-time delivery, but we'll try our best to support you,thanks.
Some items missing from my shipment
First, check that you've received all the boxes associated with your order. Then fully empty each box you received, sometimes small parts get caught in crevices or in packing material. If you still can't find your item, please email customer service right away. Include a description of the missing quantities and pictures of the whole parcel. We'll forward them to our warehouse to check the monitor records and the packing pictures records. Steps:
1. Send email to support team for authorization.
2. We'll check and verify the issues.
3. Offer solutions to customer case by case.
Return
By returning products to WELL LINK CHIPS, the Customer certifies that the products were purchased from WELL LINK CHIPS and there has been no substitution in whole or part of the same product from another supplier, distributor or other such sources of the product. The return should be in the original packaging and in unused condition (except defective). ESD or moisture-sensitive products should not be opened except under controlled conditions. General Rules: Returns are normally accepted within 365 days from the date of the parcel delivered. When a customer requests a return due to 'non-original/fake/quality problems', a valid quality report from a third-party authoritative organization recognized by our company is required for the return and exchange. Any charges from customs and other fees should be paid by customers if the return reason is customers' reason, such as buy parts mistakenly,etc. Return Freight charges must be prepaid; we will not accept COD shipments.
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Supplier level control (Qualified suppliers, provisional suppliers and blacklisted suppliers)
Graded
management
Regular
assessment
Dynamic
management
  • Qualified suppliers
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  • Provisional suppliers
  • Upgrade only if suppliers have passed the profile audit and have worked together 3 times or more without quality incidents.
  • Blacklisted suppliers
  • There is the sale of counterfeit and refurbished parts and the defaulting supplier will be permanently blacklisted.
Quality testing (QC process according to international standards to guarantee product quality)
Testing process:
Primary testing
Labels and outer packaging
Secondary testing
Appearance and electrical properties
Tertiary testing
Slicing, open cap, solderability, ambient temperature, ageing, X-RAY, ultrasound

  • External Visual Inspection

  • Electrical performance testing

  • Key functional testing

  • Key functional testing

  • Slice testing

  • X-RAY Inspection

Stock: 13 PCS

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