T5754C-6AQJ-66 Microchip

T5754C UHF ASK/FSK Transmitter DATASHEET Features Integrated PLL loop filter ESD protection also at ANT1/ANT2 (3kV HBM/150V MM except pin 2: 3kV HBM/100V MM) High output power (7.5dBm) with low supply current (9.0mA) 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 2.0V to 4.0V in the temperature range of 40C to 85C/125C Package TSSOP8L Single-ended antenna output with high efficient power amplifier CLK output for clocking the microcontroller One-chip solution with minimum external circuitry 125C operation for Tire Pressure Systems 4511L-RKE-09/151. Description The Atmel T5754C is a PLL transmitter IC which has been developed for the demands of RF low-cost transmission systems at data rates up to 32kBaud. The transmitting frequency range is 429MHz to 439MHz. It can be used in both FSK and ASK systems. Figure 1-1. System Block Diagram UHF ASK/FSK UHF ASK/FSK Remote control transmitter Remote control receiver 1 Li cell T5754 U3741B/ 1 to 3 Micro- U3745B/ Demod Control controller T5743/ T5744 Encoder PLL ATARx9x Keys Antenna Antenna XTO VCO PLL XTO Power LNA VCO amp. 2 T5754C DATASHEET 4511LRKE09/15