TDA18252HN Datasheet, PDF (1/6 Pages) NXP Semiconductors – Cable Silicon Tuner

TDA18252HN
Cable Silicon Tuner
Rev. 3 — 16 August 2010
Product data sheet
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).
• The TDA18252HN ensures a low system cost as:
– Costly components such as low-noise amplifiers, Surface Acoustic Wave (SAW)
filters and incremental crystal oscillators are eliminated from the system BOM
• The TDA18252HN high-performance Silicon Tuner meets today’s digital cable TV
reception needs with:
– Low power consumption
– High linearity
– Low noise figure
• The TDA18252HN ensures ease of use with:
– 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
„ I²C-bus provides:
‹ 3.3 V and 5 V microcontroller compatibility
‹ Received Signal Strength Indicator (RSSI) data access
‹ Die temperature sensor data access