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
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 Lifecycle Not Recommended for New Designs
This designates products ADI does not recommend broadly for new designs.
Documentation & Resources
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
Why Good Engineers Use the Best Components9/1/2006
Sigma Delta Converters are Not Really Hard to Understand7/1/2006
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
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|
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Buy Now Pricing
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