TDA18250HN/C1,557

电缆硅调谐器

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

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## 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