PCF7900VHN/C0L/UZ

RF Transmitter Overview

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

RF Transmitter Feature Summary

• Single-chip Fractional-N PLL transmitter architecture integrating VCO and loop filter
• Programmable modulation support for OOK, ASK, and FSK formats
• Independent power-down modes enabling ultra-low standby current
• Multi-channel capability for flexible system design across multiple frequency bands

RF Transmitter Applications

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

RF Transmitter Procurement Notes

Verify the specific orderable part number suffix to ensure correct packaging and tape-and-reel configuration. The standard product orientation utilizes SOT758-1 packaging. Confirm that the ordering code ending matches the required logistics specification, such as 118 or J, to align with manufacturing and handling requirements. Cross-reference the official packing information document to validate the reel specifications and surface-mount device orientation before finalizing procurement orders.

RF Transmitter Selection Notes

Select this component when designing systems requiring a minimal bill of materials and reduced external passive components. The integrated Fractional-N PLL and on-chip VCO simplify circuit layout compared to discrete solutions. Choose this IC for applications demanding low power consumption and independent sleep modes for battery-operated devices. Ensure the design accommodates the HVQFN16 or TSSOP16 footprint constraints and validates thermal performance within the specified operating temperature range.

RF Transmitter Part Context

The PCF7900VHN belongs to NXP's portfolio of highly integrated RF transmitters targeting short-range radio data (SRD) and ISM band applications. It is engineered to replace complex multi-component transmitter designs by consolidating PLL, VCO, and modulation circuits into a single die. This integration supports cost-effective mass production in automotive and consumer remote control markets where size and power efficiency are critical design parameters.

RF Transmitter Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.