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参数资料
型号： TDA9898HL/V3
厂商： NXP SEMICONDUCTORS
元件分类： 消费家电
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP48
封装： 7 X 7 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT313-2, LQFP-48
文件页数： 11/103页
文件大小： 529K
代理商： TDA9898HL/V3
TDA9897_TDA9898_4
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 04 — 25 May 2009
15 of 103
NXP Semiconductors
TDA9897; TDA9898
Multistandard hybrid IF processing
8.
Functional description
8.1 IF input switch
Different signal bandwidth can be handled by using two signal processing chains with
individual gain control.
Switch conguration allows independent selection of lter for analog VIF and for analog
SIF (used at same time) or DIF.
The switch takes into account correct signal selection for TAGC in the event of VIF and
DIF signal processing.
8.2 VIF demodulator
ATV demodulation using 6 MHz DVB window (band-pass) lter (for 6 MHz, 7 MHz or
8 MHz channel width).
IF frequencies adapted to enable the use of different lter congurations. The Nyquist
processing is integrated. The integrated Nyquist processing provides also adjacent
channel suppression. Sideband switch supplies selection of lower or upper sideband (e.g.
for L-accent).
For optional use of standard Nyquist lter the integrated Nyquist processing can be
switched off.
Equalizer provides optimum pulse response at different standards [e.g. to cope with
higher demands for Liquid Crystal Display (LCD) TV].
Integrated sound traps.
Sound trap reference independent from received 2nd sound IF (reference taken from
integrated reference synthesizer).
IF level selection provides an optimum adaptation of the demodulator to high linearity or
low noise.
8.3 VIF AGC and tuner AGC
8.3.1 Mode selection of VIF AGC
Peak white AGC for positive modulation mode with adaptation for speed up and black level
AGC (using proven system from TDA9886).
For negative modulation mode equal response times for increasing or decreasing input
level (optimum for amplitude fading) or normal peak AGC or ultra fast peak AGC.
8.3.2 VIF AGC monitor
VIF AGC DC voltage monitor output (with expanded internal characteristic).
VIF AGC read out via I2C-bus (for IF level indication) with zero-calibration via TOP setting
(TOP setting either via I2C-bus or via TOP potentiometer).
相关PDF资料
PDF描述
TDA9898HN/V3 SPECIALTY CONSUMER CIRCUIT, PQCC48
TDA9897HL/V3 SPECIALTY CONSUMER CIRCUIT, PQFP48
TDA9897HN/V3 SPECIALTY CONSUMER CIRCUIT, PQCC48
TDA9898HN/V2 SPECIALTY CONSUMER CIRCUIT, PQCC48
TDA9898HL/V2/S1 SPECIALTY CONSUMER CIRCUIT, PQFP48
相关代理商/技术参数
参数描述
TDA9898HN 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Multistandard hybrid IF processing
TDA9898HN/V2,518 功能描述:上下转换器 MULTI APPL SYS RoHS:否 制造商:Texas Instruments 产品:Down Converters 射频:52 MHz to 78 MHz 中频:300 MHz LO频率: 功率增益: P1dB: 工作电源电压:1.8 V, 3.3 V 工作电源电流:120 mA 最大功率耗散:1 W 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-128
TDA9898HN/V2,551 功能描述:上下转换器 MULTI APPL SYS RoHS:否 制造商:Texas Instruments 产品:Down Converters 射频:52 MHz to 78 MHz 中频:300 MHz LO频率: 功率增益: P1dB: 工作电源电压:1.8 V, 3.3 V 工作电源电流:120 mA 最大功率耗散:1 W 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-128
TDA9898HN/V2-S 功能描述:上下转换器 MULTI APPL SYS FOR TERRESTR IF RoHS:否 制造商:Texas Instruments 产品:Down Converters 射频:52 MHz to 78 MHz 中频:300 MHz LO频率: 功率增益: P1dB: 工作电源电压:1.8 V, 3.3 V 工作电源电流:120 mA 最大功率耗散:1 W 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-128
TDA9898HN/V2-T 功能描述:上下转换器 MULTI APPL SYS FOR TERRESTR IF RoHS:否 制造商:Texas Instruments 产品:Down Converters 射频:52 MHz to 78 MHz 中频:300 MHz LO频率: 功率增益: P1dB: 工作电源电压:1.8 V, 3.3 V 工作电源电流:120 mA 最大功率耗散:1 W 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-128
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