TDA18252HN

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

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
♦ Addressing of up to four tuners in a system
■ Lead-free manufacturing