AD652KP

Overview

The AD652KP is a monolithic synchronous voltage-to-frequency converter manufactured by Analog Devices Inc. It operates within a commercial temperature range of 0°C to +70°C and utilizes a 20-lead PLCC package. The device supports dual or single-supply operation with a rated voltage of ±15 V and an operating range of ±6 V to ±18 V for dual supplies, or +12 V to +36 V for single supply. It features a full-scale frequency capability up to 2 MHz, determined by an external system clock. Linearity error is specified at ±0.02% maximum at 2 MHz full scale. The component includes an accurate 5 V reference voltage with low drift.

Feature Summary

• Synchronous architecture using an external clock to define full-scale output frequency, ensuring stable and linear transfer functions independent of external capacitor stability.
• Requires only one noncritical external integrator capacitor for operation, simplifying circuit design.
• Includes a buffered, accurate 5 V reference voltage on-chip.
• Flexible open-collector output stage compatible with TTL and CMOS logic, optical couplers, and pulse transformers.

Applications

• Precision analog-to-digital conversion systems
• Isolated analog signal transmission via frequency-to-voltage configuration
• Single-line multiplexed data transmission
• Bridge transducer interfaces

Procurement Notes

Verify the specific grade suffix against current Analog Devices documentation, as availability may vary. Confirm that the 20-lead PLCC package matches the target PCB footprint. Ensure the commercial temperature range (0°C to +70°C) meets the operational requirements. Check for MIL-STD-883 compliant versions if military specifications are required, as these differ from the standard KP grade.

Selection Notes

Select the AD652KP when high linearity and stability are critical for voltage-to-frequency conversion. The synchronous design allows optimization of conversion time and resolution by adjusting the external clock frequency. Consider the available input ranges and the need for bipolar or negative input configurations. Verify that the single-supply or dual-supply power options align with the system's power architecture.

Part Context

The AD652 series comprises five performance grades, including JP, KP, AQ, BQ, and SQ. The KP grade specifically denotes the commercial temperature variant housed in a 20-lead PLCC package. Other grades offer industrial or extended temperature ranges and different packaging options such as CERDIP. This family is designed for precision applications requiring low drift and high accuracy.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material. Consult Analog Devices for alternative components or updated product recommendations.