Radio series


 The KT0922-D4 is KT Micro’s 2nd generation of proprietary fully integrated AM/FM receiver chip supporting mechanical tuning without MCU. The new features include improved tuning feel, new ST and Tuning light signal, improved EMI/EMC, improved FM stereo separation and one audio line-in channel.
Thanks to its advanced architecture, KT0922-D4 offers an excellent user listening experience with high sensitivity, high signal-to-noise ratio, low distortion and low sensitivity to interference.
KT0922-D4 provides direct and simple interface to support mechanical tuning. A pre-programmed low cost EEPROM can be used to configure the radio settings to differentiate product designs and accommodate standards in various regions. No external MCU is required.
Thanks to its high integration level and efficient user interface design, KT0922-D4 lowers the system cost, simplifies design and improves product reliability and manufacturability. KT0922-D4 can operate with two AAA batteries, making it ideal for low-power portable radio.
Main Features
Single-chip AM/FM radio solution
      Built-in MCU
      Support analog mechanical tuning
Worldwide FM/AM band support
      Maximum three FM bands with configurable frequency range within 32MHz-110MHz
      Configurable AM frequency range within 500KHz -1710KHz
High Sensitivity
      1.6uVEMF for FM
      16uVEMF for AM
High Fidelity
      SNR (FM/AM): 60dB/55dB
      THD: 0.3%
Low Supply Current
      25mA (operating)
      <15uA (standby)
Integrated stereo indicator
      Programmable sensitivity and hysteresis threshold
Integrated tuning indicator
      Programmable sensitivity and hysteresis threshold
Low supply voltage
      2.2V to 3.6V, can be supplied with 2 AAA batteries
Integrated low power crystal oscillator
      Support 32.768KHz and 38KHz crystal
Arbitrary reference clock supported
       From 30KHz to 40MHz with 1Hz step
One audio line-in channel
Small form factor SSOP20L package
RoHS Compliant
Main applications
Desktop and portable radio, boom box, clock radio, MP3 speaker, campus radio and other applications with mechanical tuning.