Radio series


The KT0937-D8 is KT Micro’s 3rd generation of proprietary fully integrated FM/MW/SW receiver chip with patented technologies that delivers superior audio and RF performance, supports direct and simple interface for tuning wheel and push button, and supports LCD displays through 2-wire interface .The new features include improved flatness of sensitivity on the whole band, independent status indicator, improved EMI/EMC and higher FM stereo separation.
Thanks to the patented tuning technology, the receiver maintains good signal reception even with short antennas. The chip consumes merely 29mA current and can be powered by 2 AAA batteries.
KT0937-D8 supports a wide range of reference clocks from 30 KHz to 40 MHz, hence can share system clocks with a varieties of MCUs further reducing the system BOM cost. The KT0937-D8 provides direct and simple interface to support multiple tuning schemes.
With high audio performance, fully integrated features and low BOM cost, KT0937-D8 is ideal for portable radios that require LCD displays.
Main Features
Worldwide full band FM/MW/SW support
      FM: 32MHz-110MHz
      MW: 500KHz-1750KHz
      SW: 1.75MHz-32MHz
Fully integrated frequency synthesizer with no external    components
Simple control interfaces
Integrated channel control
Versatile tuning interfaces
Key-press mode, variable resistor mode.
Support LCD display
Output channel frequency through 2-wire interface
High Fidelity
      SNR (FM/AM): 60dB/55dB(without weighting filter)
      THD: 0.3%
Low Supply Current
      29mA (operating)
      <45uA (standby)
Advanced features
       Automatic antenna tuning
      Adjustable AM channel filters (1.2/2.4/3.6/4.8/6KHz)
      Enhanced FM Automatic Frequency Control (AFC) Capability (up to 200KHz)
      Flexible Automatic Gain Control (AGC)
Integrated stereo headphone driver
      2-wire control interface for MCU
      Advanced  Softmute
      Flexible stereo Blend
Low supply voltage
       2.1V to 3.6V, can be supplied by 2 AAA batteries
Integrated low power crystal oscillator
      Support both 32.768KHz and 38KHz crystal
True Continuous Reference Clock supported
      From 30KHz      to 40MHz with 3V voltage tolerance
Compatible with EN55020
Small form factor SSOP16L package
RoHS Compliant
Main applications
Desktop and portable radio, Boombox, Micro systems, Clock radio, Campus radio system.