參數(shù)資料
型號： TDA4680
廠商： NXP SEMICONDUCTORS
元件分類： 消費(fèi)家電
英文描述： Video processor with automatic cut-off and white level control
中文描述： SPECIALTY CONSUMER CIRCUIT, PDIP28
封裝： PLASTIC, DIP-28
文件頁數(shù)： 2/28頁
文件大?。?/td> 243K
代理商： TDA4680
1996 Oct 25
2
Philips Semiconductors
Product specification
Video processor with automatic cut-off
and white level control
TDA4680
FEATURES
Operates from an 8 V DC supply
Black level clamping of the colour difference, luminance
and RGB input signals with coupling-capacitor DC level
storage
Two fully-controlled, analog RGB inputs, selected either
by fast switch signals or via I
2
C-bus
Saturation, contrast and brightness adjustment via
I
2
C-bus
Same RGB output black levels for Y/CD and RGB input
signals
Timing pulse generation from either a 2 or 3-level
sandcastle pulse for clamping, horizontal and vertical
synchronization, cut-off and white level timing pulses
Automatic cut-off control with picture tube leakage
current compensation
Software-based automatic white level control or fixed
white levels via I
2
C-bus
Cut-off and white level measurement pulses in the last
4 lines of the vertical blanking interval (I
2
C-bus selection
for PAL, SECAM, or NTSC, PAL-M)
Increased RGB signal bandwidths for progressive scan
and 100 Hz operation (selected via I
2
C-bus)
Two switch-on delays to prevent discolouration before
steady-state operation
Average beam current and peak drive limiting
PAL/SECAM or NTSC matrix selection via I
2
C-bus
Three adjustable reference voltage levels (via I
2
C-bus)
for automatic cut-off and white level control
Emitter-follower RGB output stages to drive the video
output stages
Hue control output for the TDA4555, TDA4650/T,
TDA4655/T or TDA4657.
GENERAL DESCRIPTION
The TDA4680 is a monolithic integrated circuit with a
colour difference interface for video processing in TV
receivers. Its primary function is to process the luminance
and colour difference signals from multistandard colour
decoders, TDA4555, TDA4650/T, TDA4655/T or
TDA4657, Colour Transient Improvement (CTI) IC,
TDA4565, Picture Signal Improvement (PSI) IC,
TDA4670, or from a feature module.
The required input signals are:
Luminance and negative colour difference signals
2 or 3-level sandcastle pulse for internal timing pulse
generation
I
2
C-bus data and clock signals for microcontroller
control.
Two sets of analog RGB colour signals can also be
inserted, e.g. one from a peritelevision connector and the
other from an on-screen display generator; both inputs are
fully-controlled internally. The TDA4680 includes full
I
2
C-bus control of all parameters and functions with
automatic cut-off and white level control of the picture tube
cathode currents. It provides RGB output signals for the
video output stages.
There is a very similar IC TDA4681 available. The only
differences are in the NTSC matrix.
ORDERING INFORMATION
TYPE NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
TDA4680
TDA4680WP
DIP28
PLCC28
plastic dual in-line package; 28 leads (600 mil)
plastic leaded chip carrier; 28 leads
SOT117-1
SOT261-2
相關(guān)PDF資料
PDF描述
TDA4680WP Video processor with automatic cut-off and white level control
TDA4685 Video processor with automatic cut-off control
TDA4687 Video processor with automatic cut-off control
TDA4688 Video processor with automatic cut-off control
TDA4689 Video processor with automatic cut-off control
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TDA4680/V6 制造商:Panasonic Industrial Company 功能描述:IC
TDA4680WP 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Video processor with automatic cut-off and white level control
TDA4681 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Video processor with automatic cut-off and white level control
TDA4681WP 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Video processor with automatic cut-off and white level control
TDA4685 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Video processor with automatic cut-off control
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報(bào)價(jià)

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*