描述 Description

The KT0853 is KT Micro’s 2nd generation of proprietary fully integrated FM receiver chip that upgrades the performance, improve the user experience and ease integration and manufacturing efforts. The new features includes the additional audio input, 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 25mA current and can be powered by 2 AAA batteries. Another useful feature is that the volume and channel information can be preserved in standby mode without external memories. KT0853 supports a wide range of reference clocks from 32.768KHz to 26MHz, hence can share system clocks with a varieties of MCUs further reducing the system BOM cost. The KT0853 have different user interface schemes like other parts in the KT085x family,
With high audio performance, fully integrated features and low BOM cost, KT0853 is ideal for various applications and products that require flexible programmability for rich features

特性 Features

? Worldwide full band FM support
?????? FM: 32MHz-110MHz
? Fully integrated frequency synthesizer with no external components
? High Sensitivity
?????? 1.6uVEMF for FM
? High Fidelity
?????? SNR (FM): 60dB/55dB
?????? THD: 0.3%
? Low Supply Current
?????? 25mA (operating)
?????? <15uA (standby)
? Advanced features
?????? Automatic antenna tuning
?????? Enhanced Automatic Frequency Control (AFC) Capability (up to 200KHz)
?????? Embedded FM SNR meter
?????? Embedded ST indicator
?????? Embedded line-in driver and TPDT switch
?????? Fast seek/Tune
?????? Integrated stereo headphone driver
?????? I2C control interface for MCU
?????? Channel and volume info stored and recovered
? Low supply voltage
?????? ?2.1V to 3.6V, can be supplied by 2 AAA batteries
? 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 SSOP20L package
? RoHS Compliant

應(yīng)用 Application

Desktop and portable radio, mini/portable audio systems, clock radio, campus radio, PMP docking station, car audio system, toy and gift.