PCF7900VHN/C0L/UJ

RF Transmitter Overview

The PCF7900VHN is a highly integrated single-chip Fractional-N PLL UHF transmitter IC designed for ISM/SRD bands, specifically covering 315, 434, 868, and 915 MHz. It features an on-chip VCO and PLL loop filter, supporting programmable OOK, ASK, and FSK modulation properties with adjustable transmit output power. The device ensures low power operation, consuming only 7 mA during transmission at 6 dBm. It includes independent power-down modes for the oscillator and PLL, reducing current to 50 nA. The component is available in a compact HVQFN16 package measuring 3 mm x 3 mm, or optionally in a TSSOP16 package.

RF Transmitter Feature Summary

• Single-chip Fractional-N PLL transmitter architecture integrating VCO and loop filter
• Supports multi-channel capability across multiple ISM/SRD frequency bands
• Programmable modulation options including OOK, ASK, and FSK
• Independent power-down modes for oscillator and PLL to minimize standby consumption

RF Transmitter Applications

• Automotive Garage Door Openers
• Passive Keyless Entry (PKE) systems
• Remote Control devices
• Remote Keyless Entry (RKE) systems
• Tire Pressure Monitoring (TPMS)

RF Transmitter Procurement Notes

Verify the specific ordering suffix to confirm the package type and tape-and-reel configuration. The part number ending in ,118 or J indicates standard product orientation and packing information. Ensure the selected variant matches the required footprint, such as HVQFN16 or TSSOP16, by checking the official ordering code documentation. Confirm active status and availability through authorized NXP channels before finalizing procurement plans.

RF Transmitter Selection Notes

Select this component for designs requiring a minimal external component count and flexible system integration. It is suitable for applications needing low bill of materials and support for various modulation schemes. Consider the available packages based on space constraints and thermal requirements. Verify that the target application operates within the supported ISM/SRD bands and utilizes compatible antenna configurations for optimal performance.

RF Transmitter Part Context

The PCF7900VHN belongs to NXP's portfolio of highly integrated RF transmitters tailored for short-range wireless communication. It addresses the need for cost-effective and compact solutions in automotive and consumer remote control markets. The device simplifies design complexity by integrating critical RF functions onto a single chip, reducing board space and assembly costs compared to discrete solutions.

RF Transmitter Replacement Considerations

Public confirmed substitute part numbers are not provided in the available documentation. Consult NXP official resources for potential cross-reference options if this specific model is unavailable.