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TDA18250HN Datasheet, PDF (1/8 Pages) NXP Semiconductors – Cable Silicon Tuner | |||
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TDA18250HN
Cable Silicon Tuner
Rev. 1 â 12 August 2010
Objective data sheet
1. General description
The TDA18250HN is a Silicon Tuner IC designed specifically for high definition cable Set
Top Boxes (STB) supporting single streaming.
Used in conjunction with the TDA10024HN (digital channel demodulator), the
TDA18250HN covers all worldwide digital cable standards.
⢠The TDA18250HN ensures a low system cost as:
â Costly components such as low-noise amplifiers, Surface Acoustic Wave (SAW)
filters are eliminated from the system BOM
⢠The TDA18250HN high-performance Silicon Tuner meets todayâs digital cable TV
reception needs with:
â Low power consumption
â High linearity
â Low noise figure
⢠The TDA18250HN ensures ease of use with:
â Easy on-board integration
â Efficient and effective PCB design
â Reduced external components
2. Features and benefits
 RF frequency coverage up to 860 MHz
 Integrated wideband gain control
 LOW IF (LIF) output
 Single 3.3 V power supply
 Low power consumption
 Multistandard cable receptions
 Fully integrated IF selectivity, eliminating the need for external SAW filters
 RF Loop-Through (LT)
 Enhanced RF and IF filters to increase selectivity and adjacent channels filtering
 Alignment free
 Fully integrated oscillators:
 No external oscillator components for reduced cost
 16 MHz crystal oscillator output buffer for single crystal applications
 I2C-bus provides:
 3.3 V microcontroller compatibility
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