[KTMicro]

General Description

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’s based on the architecture of award winning KT0801 and it’s 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 high fidelity 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.

Thanks to its high integration level, the KT0803K is mounted in a generic 16-pin SOP package. It only requires a single low-voltage supply. No external tuning is required that makes design-in effort minimum.

特性 Features

Hardware compatible with KT0803

Additional features to KT0803

Increased transmission Power

Input signal detection

Bass boost control

32.768 KHz clock support

Professional Grade Performance:

SNR ≥ 60 dB

Stereo Separation > 40 dB

International compatible 70MHz ~ 108MHz

Ultra-Low Power Consumption:

< 17 mA operation current

< 3 μA standby current

Small Form factor:

16-pin SOP

Simple Interface:

Single power supply

Industry standard 2-wire I2C MCU

interface compatible

Advanced Digital Audio Signal Processing:

On-chip 20-bit ΔΣ Audio ADC

On-chip DSP core

On-chip 24dB PGA with optional 1dB step

Automatic calibration against process

and temperature

On-Chip LDO (low-drop-out) regulator:

Accommodates 1.6V ~ 3.6V supply

Programmable transmit level

Programmable pre-emphasis (50/75 μs)

Pb-free and RoHS Compliant

Applications

MP3 Player

Cellular Phone

PDA

Portable Personal Media player

Laptop Computer

Wireless Speaker