Product Summary

The KT0803K, our new generation of low cost Monolithic Digital FM Transmitter, is designed to process high-fidelity stereo audio signal and transmit modulated FM signal over a short range. It is based on the architecture of awardwinning KT0801 and it is also an upgrade of KT0803. The additional features added to KT0803K are increased transmission power up to 113 dBuV, auto level detection and bass boost and support of 32.768K Hz clock or crystal. The KT0803K features dual 20-bit ΔΣ audio ADCs, a highfidelity digital stereo audio processor and a fully integrated radio frequency (RF) transmitter. An on-chip low-drop-out regulator (LDO) allows the chip to be integrated in a wide range of low-voltage battery-operated systems with power supply ranging from 1.6V to 3.6V. The KT0803K is configured as an I2C slave and programmed through the industry standard 2-wire MCU interface.


KT0803K operation condition: (1)1.8V Analog Supply, VDD at Relative to GND: 1.6 v min, 1.8 v typ, 2.0 V max; (2)IO/Regulator Supply, IOVDD at Relative to GND: 1.6 to 3.6 V; (3)Operating Temp, TA at Ambient Temperature: 0℃ min, 25℃ typ, 70℃ max.


KT0803K features: (1)Hardware compatible with KT0803; (2)Additional features to KT0803: Increased transmission Power, Input signal detection, Bass boost control, 32.768 KHz clock support; (3)Professional Grade Performance: SNR ≥ 60 dB, Stereo Separation > 40 dB, International compatible 70MHz ~ 108MHz; (4)Ultra-Low Power Consumption: < 17 mA operation current, < 3 μA standby current; (5)Small Form factor: 16-pin SOP; (6)Simple Interface: Single power supply, Industry standard 2-wire I2C MCU, interface compatible; (7)Advanced Digital Audio Signal Processing: On-chip 20-bit ΔΣ Audio ADC, On-chip DSP core; (8)On-chip 24dB PGA with optional 1dB step, Automatic calibration against process and temperature; (9)On-Chip LDO (low-drop-out) regulator: Accommodates 1.6V ~ 3.6V supply; (10)Programmable transmit level; (11)Programmable pre-emphasis (50/75 μs); (12)Pb-free and RoHS Compliant.


KT0803K system diagram