NXP cable silicon tuner TDA18250 High-performance silicon tuner for cost-sensitive cable zapper STB This advanced, single-package solution reduces size and cost by integrating all the functions for receiving an RF channel in the cable TV band from 42 to 862 MHz. Key features RF input with direct cable connection Low IF output, connecting directly to demodulators RF loop-through Frequency coverage: 42 to 862 MHz High sensitivity and high power robustness Multistandard cable reception covering i.e. NorDig and SARFT standards Suppression of third and fifth signal harmonics Optimum adjacent channel rejection Single 3.3 V supply with low power consumption High accuracy Received Signal Strength Indicator (RSSI) The NXP TDA18250 supports the trend of replacing can tuners with silicon tuners to create cost-competitive set-top boxes (STBs). High integration reduces the size and cost of the application. Designed for use in the cable TV band from 42 to 862 MHz, this single-package device builds on NXP’s proven silicon tuner technology and has been designed to minimize the number and cost of external components. It offers all the features required for reception in a single-stream STB. Applications Single-tuner cable STBs Very small cable tuner modules NXP_04_0136_TDA18250_leaflet_939775017142.indd 1 12/07/11 11:43 TDA18250 block diagram OM3914: TDA18250-based front-end with TDA10024 cable demodulator 001aao328 OM3925C: TDA18250 tuner-only board for easy STB integration and validation OM3948C: TDA18250 tuner in can-tuner-like enclosure for very small applications 001aao329 001aao330 Key parameters Parameter Value (typical) Sensitivity (64 QAM) 34 dBµV Max input level (64 QAM) 110 dBµV Input return loss -8 dB CSO -60 dB CTB -60 dB IF selectivity 6/7/8/9 MHz 5th order LPF 0.4/0.85/1/1.5 MHz 2nd order HPF AGC Free NF 5.5 dB RSSI accuracy (absolute) ± 3 dB RSSI accuracy (relative) ± 0.5 dB Power consumption ~ 850 mW www.nxp.com © 2011 NXP Semiconductors N.V. All rights reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The Date of release: July 2011 information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and Document order number: 9397 750 17142 may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof Printed in the Netherlands does not convey nor imply any license under patent- or other industrial or intellectual property rights. NXP_04_0136_TDA18250_leaflet_939775017142.indd 2 12/07/11 11:43