Description
The KT0922M-D4 is KT Micro’s latest generation of proprietary fully integrated mono AM/FM receiver chip supporting mechanical tuning without MCU. By having two differential outputs for mono signal, it simplifies the PCB design and lower BOM cost.
Thanks to its advanced architecture, KT0922M-D4 offers an excellent user listening experience with high sensitivity, high signal-to-noise ratio, low distortion and low sensitivity to interference.
KT0922M-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, KT0922M-D4 lowers the system cost, simplifies design and improves product reliability and manufacturability. KT0922M-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 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
Small form factor SSOP16L package
RoHS Compliant
Main applications
Desktop and portable radio, boom box, clock radio, MP3 speaker, campus radio and other applications with mechanical tuning.
