AD650 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

AD650
Manufacturer

ADI
ChipWorker Part#

CW147819103
Description

Voltage-to-Frequency and Frequency-to-Voltage Converter
Documentation

Datasheet

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AD650 Specifications

Attribute	Attribute Value

Part Number	AD650
Manufacturer	ADI
ChipWorker Part#	CW147819103
Documentation	Datasheet
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Product Lifecycle Status	Active

Product Description

Product Details
The AD650 V/F/V (voltage-to-frequency or frequency-to-voltage converter) provides a combination of high frequency operation and low nonlinearity previously unavailable in monolithic form. The inherent monotonicity of the V/F transfer function makes the AD650 useful as a high-resolution analog-to-digital converter. A flexible input configuration allows a wide variety of input voltage and current formats to be used, and an open-collector output with separate digital ground allows simple interfacing to either standard logic families or opto-couplers.
The linearity error of the AD650 is typically 20 ppm (0.002% of full scale) and 50 ppm (0.005%) maximum at 10 kHz full scale. This corresponds to approximately 14-bit linearity in an analog-to-digital converter circuit. Higher full-scale frequencies or longer count intervals can be used for higher resolution conversions. The AD650 has a useful dynamic range of six decades allowing extremely high resolution measurements. Even at 1 MHz full scale, linearity is guaranteed less than 1000 ppm (0.1%) on the AD650KN, KP, BD and SD grades.
In addition to analog-to-digital conversion, the AD650 can be used in isolated analog signal transmission applications, phased locked-loop circuits, and precision stepper motor speed controllers. In the F/V mode, the AD650 can be used in precision tachometer and FM demodulator circuits.
The input signal range and full-scale output frequency are user-programmable with two external capacitors and one resistor. Input offset voltage can be trimmed to zero with an external potentiometer.
The AD650JN and AD650KN are offered in a plastic 14-pin DIP package. The AD650JP and AD650KP are available in a 20-pin plastic leaded chip carrier (PLCC). Both plastic packaged versions of the AD650 are specified for the commercial (0°C to +70°C) temperature range. For industrial temperature range (-25°C to +85°C) applications, the AD650AD and AD650BD are offered in a ceramic package. The AD650SD is specified for the full -55°C to +125°C extended temperature range.
### Features and Benefits
V/F Conversion to 1 MHz
Reliable Monolithic Construction
Very Low Nonlinearity
\- 0.002% typ at 10 kHz
\- 0.005% typ at 100 kHz
\- 0.07% typ at 1 MHz
Input Offset Trimmable to Zero
CMOS or TTL Compatible
Unipolar, Bipolar or Differential V/F
V/F or F/V Conversion
Available in Surface Mount
MIL-STD-883 Compliant Versions Available

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