Overview
Features and Benefits
- Low Cost
- Single or Dual Supply, 5 V to 36 V,
±5 V to ±18 V - Full-Scale Frequency Up to 500 kHz
- Minimum Number of External Components Needed
- Versatile Input Amplifier
Positive or Negative Voltage Modes
Negative Current Mode
High Input Impedance, Low Drift - Low Power: 2.0 mA Quiescent Current
- Low Offset: 1 mV
Product Details
The AD654 is a monolithic V/F converter consisting of an input amplifier, a precision oscillator system, and a high current output stage. A single RC network is all that is required to set up any full scale (FS) frequency up to 500 kHz and any FS input voltage up to ±30 V. Linearity error is only 0.03% for a 250 kHz FS, and operation is guaranteed over an 80 dB dynamic range. The overall temperature coefficient (excluding the effects of external components) is typically ±50 ppm/°C. The AD654 operates from a single supply of 5 V to 36 V and consumes only 2.0 mA quiescent current.
The low drift (4 µV/°C typ) input amplifier allows operation directly from small signals such as thermocouples or strain gauges while offering a high (250 MΩ) input resistance. Unlike most V/F converters, the AD654 provides a square-wave output, and can drive up to 12 TTL loads, optocouplers, long cables, or similar loads.
Product Categories
Product Lifecycle
Not Recommended for New Designs
This designates products ADI does not recommend broadly for new designs.
Documentation & Resources
-
FAQs7/26/2017
-
Summer Camp Lab 3: AD654 LED Flasher10/15/2018
-
Transformers: They’re Not All Boat Anchors6/1/2012
-
Do Something with that Unused Pin!6/1/2011
-
Make do!9/1/2010
-
Why Good Engineers Use the Best Components9/1/2006
-
Sigma Delta Converters are Not Really Hard to Understand7/1/2006
-
Tick-Tock, Tick-Tock12/5/2005
-
Slow “starting” ADCs7/1/2005
-
Radio Frequency Interference (or how to get a free lunch at a very good restaurant)6/6/2005
-
Ask the Applications Engineer—14: High Frequency Signal Contamination4/1/1993 Analog Dialogue
Design Resources
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.View our quality and reliability program and certifications for more information.
Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
---|---|---|---|---|
AD654JNZ | Material Declaration | Reliability Data | 8-Lead PDIP | |
AD654JRZ | Material Declaration | Reliability Data | 8-Lead SOIC | |
AD654JRZ-REEL | Material Declaration | Reliability Data | 8-Lead SOIC | |
AD654JRZ-REEL7 | Material Declaration | Reliability Data | 8-Lead SOIC | |
Wafer Fabrication Data |
PCN-PDN Information
Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.
Support & Discussions
AD654 Discussions
Sample & Buy
Ordering FAQs
See our Ordering FAQs for answers to questions about online orders, payment options and more.
Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
List Pricing
(*)The 1Ku 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. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Lead Times
Please see the latest communication from our CCO regarding lead times.
Sampling
A Sample link will be shown above, next to the part, only for parts that are included in our sample program. Selecting the Sample button will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.