參數(shù)資料
型號(hào)： TDA9897HL/V2/S1
廠商： NXP SEMICONDUCTORS
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP48
封裝： 7 X 7 MM, 1.40 MM HEIGHT, PLASTIC, SOT313-2, MS-026, LQFP-48
文件頁(yè)數(shù)： 12/103頁(yè)
文件大小： 511K
代理商： TDA9897HL/V2/S1
TDA9897_TDA9898_3
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 — 11 January 2008
16 of 103
NXP Semiconductors
TDA9897; TDA9898
Multistandard hybrid IF processing
Thus two switchable TAGC systems for negative/DIF and positive modulation
implemented.
L standard TAGC output changed from current output to voltage output, as it is not
necessary to adapt for other than 5 V tuner.
L standard tuner time constant switching integrated (= speed up function in the event of
step into high input levels), to minimize external application.
For high TOP accuracy at L standard, additional adjustment via optional potentiometer or
I2C-bus is provided.
Tuner AGC status bit provided. This function enables TOP alignment without need for
TAGC voltage measurement (e.g. for TOP alignment in a complete set, where access to
internal signals is not possible).
8.4 DIF/SIF FM and AM sound AGC
External AGC control input for DIF. DIF includes 1st IF, zero IF and low IF.
Integrated gain control loop for SIF.
Bandwidth of AGC control for FM SIF related to used SAW bandwidth.
Peak AGC control in the event of FM SIF.
Ultra fast SIF AGC time constant when VIF AGC set to ultra fast mode.
Slow average AGC control in the event of AM sound.
AM sound AGC related to AM sound carrier level.
Fast AM sound AGC in the event of fast VIF AGC (speed up).
SIF AGC DC voltage monitor output with expanded internal characteristic.
8.5 Frequency phase-locked loop for VIF
Basic function as previous TDA9887 design.
PLL gating mode for positive and negative modulation, optional.
PLL optimized for either overmodulation or strong multipath.
8.6 DIF/SIF converter stage
Frequency conversion with sideband suppression.
Selection mode of upper or lower sideband for pass or suppression.
Suppression around zero for frequency conversion.
I/Q output mode for zero IF conversion.
Conversion mode selection via synthesizer for DIF and radio mode or via VIF Frequency
Phase-Locked Loop (FPLL) for TV QSS sound (FM/AM).
相關(guān)PDF資料
PDF描述
TDA9897HN/V2 SPECIALTY CONSUMER CIRCUIT, PQCC48
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TDA9897HN 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Multistandard hybrid IF processing
TDA9897HN/V3 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Multistandard hybrid IF processing
TDA9897S1 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Multistandard hybrid IF processing
TDA9897V2 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Multistandard hybrid IF processing
TDA9898 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Multistandard hybrid IF processing
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