深圳市中立信电子科技有限公司

TDA18250BHN/C1Y

调谐器 Cable silicon tuner

General description TDA18250BHN/C1Y

The TDA18250BHN/C1Y TDA18250B is a silicon tuner designed specifically for worldwide cable and terrestrial

digital Set Top Boxes (STB).

• The TDA18250B ensures a low system cost by saving external components such as:

– Low-Noise Amplifiers

– Surface Acoustic Wave (SAW) filters

– RF splitter

Moreover, thanks to its 8 kV ESD capability, EIA/JESD22-A114 (HBM), on the RF

input pin and the loop-through pin, the application level ESD protection can be

reduced.

Features and benefits TDA18250BHN/C1Y

 Single 3.3 V supply voltage

 RF frequency coverage up to 1 GHz

 Flexible low IF output from 3 MHz to 7.5 MHz to ease the matching with various

demodulators

 RoHS compliant

 I2C-bus interface compatible with 3.3 V microcontrollers

 Strong Immunity to wireless interferers (WLAN, GSM, LTE)

 Multi-reference clock frequency compliant:16 MHz, 24 MHz, 25 MHz, 27 MHz and

30 MHz

 Crystal oscillator output buffer to drive demodulator, SoC or slave tuner

 Slave Tuner Output (STO), integrated splitter for dual tuner applications

 Fully integrated oscillators

 LT output

 Fully integrated IF and RF selectivity; eliminating the need for external SAW filters

 Single-ended RF input (no need for external balun)

 Enhanced ESD protection (8 kV HBM) on RF_IN and LT pins

 Alignment free

 Excellent return loss compatible with cable requirements

 Integrated RSSI function, readable through I2C-bus

 Integrated temperature sensor

 Integrated gain control