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TDA9897HL Arkusz danych(PDF) 2 Page - NXP Semiconductors |
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2 / 103 page TDA9897_TDA9898_3 © NXP B.V. 2008. All rights reserved. Product data sheet Rev. 03 — 11 January 2008 2 of 103 NXP Semiconductors TDA9897; TDA9898 Multistandard hybrid IF processing I Optimized AGC modes for negative modulation; e.g. very fast reaction time for VIF and SIF I Precise fully digital Automatic Frequency Control (AFC) detector with 4-bit Digital-to-Analog Converter (DAC); AFC bits can be read-out via I2C-bus I High precise Tuner AGC (TAGC) TakeOver Point (TOP) for negative modulated standards; TOP adjust via I2C-bus I TAGC TOP for positive standards and Received Signal Strength Indication (RSSI); adjustable via I2C-bus or alternatively by potentiometer I Fully integrated Sound Carrier (SC) trap for any ATV standard (SC at 4.5 MHz, 5.5 MHz, 6.0 MHz and 6.5 MHz) I SIF AGC for gain controlled SIF amplifier and high-performance single-reference Quasi Split Sound (QSS) mixer I Fully integrated sound BP filter supporting any ATV standard I Optional use of external FM sound BP filter I AM sound demodulation for L and L-accent standard I Alignment-free selective FM Phase-Locked Loop (PLL) demodulator with high linearity and low noise; external FM input I VIF AGC voltage monitor output or port function I VIF AFC current or tuner, SIF or FM AGC voltage monitor output I 2nd SIF output, gain controlled by internal SIF AGC or by internal FM carrier AGC for Digital Signal Processor (DSP) I Fully integrated BP filter for 2nd SIF at 4.5 MHz, 5.5 MHz, 6.0 MHz or 6.5 MHz 2.3 Digital TV processing I Applicable for terrestrial and cable TV reception I 70 dB variable gain wide-band IF amplifier (AC-coupled) I Gain control via external control voltage (0 V to 3 V) I 2 V (p-p) differential low IF (downconverted) output or 1 V (p-p) 1st IF output for direct Analog-to-Digital Converter (ADC) interfacing I DVB downconversion with integrated selectivity for Low IF (LIF)/Zero IF (ZIF) I Integrated anti-aliasing tracking low-pass filter I Fully integrated synthesizer controlled oscillator with excellent phase noise performance I Synthesizer frequencies for a wide range of world wide DVB standards (for IF center frequencies of 34.5 MHz, 36 MHz, 44 MHz and 57 MHz) I All DVB bandwidth ranges supported (including ZIF I/Q) I TAGC detector for independent tuner gain control loop applications I TAGC operating as peak detector, fast reaction time due to additional speed-up detector I Port function I TAGC voltage monitor output |
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