SSTX4930

SSTX4930 www.DataSheet4U.com Low Power ISM-Band FM/FSK Transmitter Description The SSTX4930 is a low-power 433/868/915 MHz FM/FSK transmitter IC suitable for use in the North American 915 MHz and European 433 and 868 MHz ISM bands. The SSTX4930 is intended as a phase-locked frequency source in local oscillator or transmitter applications. Features ! Integrated VCO with multi-modulus ÷ 64/65/128/129 prescaler, phase/frequency detector, and reference oscillator forming complete phase-locked loop ! Transmitter enable pin for power saving ! 2.7V to 5V supply voltage ! On-chip varactor diode for narrowband modulation ! SSOP-16 package (0.64mm pitch) Applications ! Wireless mouse ! Wireless amplifier/ speaker/ headphone/ microphone ! Wireless car alarm system Block Diagram Pin Out Diagram NC VREFP DO RES MOD RES IN SW MC 16 15 14 CHARGE PUMP 13 VCO 12 11 10 9 OSCIN OSCOUT VSS1 TXOUT 1 16 NC VREFP DO RES MODIN RES SW MC SSTX4930 2 3 4 5 6 7 8 15 14 13 12 11 10 9 ÷ 64/65/128/129 PFD VCC VSS TXEN NC REF OSC BIAS PA 1 OSC IN 2 3 4 5 6 7 8 NC OSC VSS1 OUT TX VCC OUT VSS TXEN Rev.2.01 6/26/2003 www.SiliconStandard.com 1 of 6 SSTX4930 www.DataSheet4U.com Pin Descriptions Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Name OSCIN OSCOUT VSS1 TXOUT VCC VSS TXEN NC MC SW RES MODIN RES DO VREFP NC I/O I O GND O POWER GND I NC I I I/O I I/O O O NC Description Connected directly to the reference oscillator transistor base. Connected directly to the...