Overview
●The TDA18250A is a silicon tuner designed specifically for worldwide cable and terrestrial digital Set Top Boxes (STB).
● The TDA18250A 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.
● The TDA18250A silicon tuner meets current and future digital cable and terrestrial TV reception with:
● Low-power consumption
● High linearity
● Very low noise figure (3.8 dB typical)
● High immunity to wireless interferers (WLAN, LTE and GSM)
● The TDA18250A ensures ease of use with:
● Easy on-board integration
● Efficient and effective PCB design
● Reduced external components
● Integrated Zero Power Loop-Through (ZPLT)
●MoreLess
●## Features
● 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, 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, both in active and Zero Power Loop-Through mode (ZPLT)
● 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) on RF_IN and ZPLT pins
● Alignment free
● Excellent return loss compatible with cable requirements
● Integrated RSSI function, readable through I²C-bus
● Integrated temperature sensor
● Integrated gain control
●## Target Applications
● Digital cable STB applications:
● DVB-C
● J83.B
● J83.C
● Digital terrestrial STB applications:
● DTMB
● DVB-T/DVB-T2 (NORDIG 2.4, DTG D-Book 7)
● ISDB-T
● ATSC
● PVR
● DOCSIS 2.0 and EuroDOCSIS 2.0 cable modem
● DOCSIS 3.0 and EuroDOCSIS 3.0
●## Features
