TRF3761-CIRHAR

The TRF3761-CIRHAR from Texas Instruments is a highly integrated frequency synthesizer featuring an Integer-N PLL and a low-noise, voltage-controlled oscillator (VCO). This device is designed for high-performance applications, offering a phase noise of -137 dBc/Hz at 600kHz offset and a noise floor of -158 dBc/Hz at 10MHz offset.

With a single supply voltage range of 4.5V to 5.25V, the TRF3761-CIRHAR supports an input reference frequency range of 10MHz to 104MHz and can generate VCO frequencies divided by 2-4, with an output frequency up to 1.79GHz. It includes features such as an output buffer enable pin, programmable charge pump current, and hardware/software power-down capabilities, all accessible via a 3-wire serial interface.

The component is housed in a 40-VFQFN Exposed Pad package, suitable for surface mounting. Its operating temperature range is -40°C to 85°C, making it a robust choice for various wireless infrastructure applications including WCDMA, CDMA, GSM, wideband transceivers, wireless local loop, and RFID transceivers, as well as clock generation and IF LO generation.

Key specifications include its Integer-N PLL architecture, integrated VCO, and support for differential signaling. The device is designed for efficient operation and integration into complex RF systems.