ATR4256-TKQY

Overview

The ATR4256-TKQY is a frequency synthesizer IC designed for radio tuning applications, manufactured by Microchip Technology. It operates as an RF integrated circuit with buffered outputs suitable for broadcast radio systems. The device features a reference oscillator input capable of supporting frequencies up to 15 MHz in tuned configurations. It includes an oscillator buffer output specifically intended for AM up and down conversion processes. The component incorporates two programmable 16-bit dividers to facilitate precise frequency synthesis. It is housed in a 20-SSOP surface-mount package and is supplied in tape and reel format for automated assembly.

Feature Summary

• Integrated frequency synthesizer architecture optimized for radio tuning functions
• Dedicated oscillator buffer output supporting AM up and down conversion operations
• Dual programmable 16-bit divider configuration for flexible frequency control

Applications

• Broadcast radio receiver tuning circuits
• AM signal up-conversion stages
• AM signal down-conversion stages

Procurement Notes

Verify the specific ordering suffix TKQY against the official Microchip Technology datasheet to confirm package type and reel specifications. Ensure compatibility with 20-SSOP footprint requirements during PCB layout. Cross-reference the part number with authorized distributors to obtain current product status and availability information. Confirm that the reference oscillator interface supports the required 15 MHz maximum input frequency for the intended application design.

Selection Notes

Select this component when a dedicated frequency synthesizer for broadcast radio applications is required. Consider the 20-SSOP surface-mount package constraints and the need for buffered outputs for AM conversion tasks. Evaluate the integration of two programmable 16-bit dividers against external divider requirements in alternative solutions. Verify that the reference oscillator input range aligns with the system's clock source capabilities before finalizing the design choice.

Part Context

The ATR4256 belongs to Microchip Technology's portfolio of RF and wireless integrated circuits. This specific model is categorized under RF misc ICs and modules, focusing on frequency synthesis for radio tuning. It represents a specialized solution for broadcast radio systems requiring precise frequency generation and conversion capabilities within a compact surface-mount form factor.

Replacement Considerations

Consult the official Microchip Technology documentation for any officially confirmed substitute part numbers. Verify pinout compatibility and functional equivalence if considering alternative frequency synthesizers from other manufacturers. Ensure that replacement components support the same 20-SSOP package and buffered output requirements for seamless integration.