T5761/T5760 ASK/FSK 870～868 MHz/928～902 MHz Receiver

   T5761/T5760 is a receiver developed to meet the requirements of low-cost RF data transmission system. It is used together with RF transmitter chip T5750 and is suitable for applications in telemetry, security technology and keyless entry system. 

The main technical features are as follows: 

・Receiving frequency is 868～870 MHz/902～928 MHz; 

・ASK/FSK demodulation method; 

・The data rate for transmitting Manchester or bi-phase encoding is 1 to 10 Kb/s; 

・Input sensitivity: -110dBm for ASK mode, -102 dBm for FSK mode 

・System IIP3 is -16 dBm, 1 dB compression point is -25 dBm, and image attenuation is 30 dB; 

・5-20 V compatible data interface, only one duplex data line is needed to communicate with the microcontroller; 

・Data clock can be used for Manchester or bi-phase coded signals; 

・Programmable digital noise suppression, assignable query mode to achieve low power consumption; 

・The maximum rated voltage is 6 V; 

・Working current: 9.9 mA in FSK mode, 9.6 mA in ASK mode, 276μA in sleep mode; 

・Operating temperature: -40～105℃.

Application circuit of T5761/T5760 at fRF = 868.3 MHz without SAW filter

Application circuit of T5761/T5760 with SAW filter at fRF = 868.3 MHz