T5754

Features Integrated PLL Loop Filter ESD Protection (4 kV HBM/200 V MM; Except Pin 2: 4 kV HBM/100 V MM) also at ANT1/ANT2 High Output Power (7.5 dBm) with Low Supply Current (9.0 mA) Modulation Scheme ASK/ FSK – FSK Modulation is Achieved by Connecting an Additional Capacitor Between the XTAL Load Capacitor and the Open Drain Output of the Modulating Microcontroller Easy to Design-in Due to Excellent Isolation of the PLL from the PA and Power Supply Single Li-cell for Power Supply Supply Voltage 2.0 V to 4.0 V in the Temperature Range of -40° C to 85° C/125° C Package TSSOP8L Single-ended Antenna Output with High Efficient Power Amplifier CLK Output for Clocking the Microcontroller One-chip Solution with Minimum External Circuitry 125° C Operation for Tire Pressure Systems UHF ASK/FSK Transmitter T5754 Description The T5754 is a PLL transmitter IC which has been developed for the demands of RF low-cost transmission systems at data rates up to 32 kBaud. The transmitting frequency range is 429 MHz to 439 MHz. It can be used in both FSK and ASK systems. www.DataSheet4U.com Figure 1. System Block Diagram UHF ASK/FSK Remote control transmitter UHF ASK/FSK Remote control receiver Demod. Control 1...3 Keys Encoder ATARx9x XTO PLL Antenna Antenna VCO IF Amp PLL XTO Power amp. LNA VCO Microcontroller 1 Li cell T5754 U3741B/ U3745B/ T5743/ T5744 Rev. 4511F–RKE–07/04 Pin Configuration Figure 2. Pinning TSSOP8L CLK 1 8 ENABLE GND PA_ENABLE ...