1.

General description

The TDA18252HN is a single-chip direct conversion Silicon Tuner IC designed for

digital-only cable applications.

The TDA18252HN integrates a loop-through feature that enables the RF input signal to be

used as an output for another downconverter. This feature simplifies the application and

reduces the Bill Of Materials (BOM).

– Costly components such as low-noise amplifiers, Surface Acoustic Wave (SAW)

filters and incremental crystal oscillators are eliminated from the system BOM

reception needs with:

– Low power consumption

– High linearity

– Low noise figure

– Easy on-board integration

– Efficient and effective PCB design

– Reduced external components

2.

Features and benefits

Single 3.3 V power supply

Low power consumption

Extended frequency coverage of up to 1002 MHz

Digital cable reception for STB

RF loop-through

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

Alignment free

Fully integrated oscillator with no external components

Integrated wideband gain control

Crystal oscillator output buffer (16 MHz) for single crystal applications

3.3 V and 5 V microcontroller compatibility

Received Signal Strength Indicator (RSSI) data access

Die temperature sensor data access

TDA18252HN

Cable Silicon Tuner

Rev. 3 — 16 August 2010

Product data sheet