- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄373619 > TDA4681 (NXP SEMICONDUCTORS) Video processor with automatic cut-off and white level control PDF資料下載
參數(shù)資料
| 型號： | TDA4681 |
| 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： | 0.600 INCH, PLASTIC, SOT-117-1, MO-015AH, DIP-28 |
| 文件頁數(shù)： | 2/28頁 |
| 文件大?。?/td> | 160K |
| 代理商： | TDA4681 |
第1頁當(dāng)前第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁
1997 Mar 04
2
Philips Semiconductors
Product specification
Video processor with automatic cut-off
and white level control
TDA4681
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 TDA4681 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 TDA4681 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 available, TDA4680. The only
differences are in the NTSC matrix.
ORDERING INFORMATION
TYPE NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
TDA4681
TDA4681WP
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 |
|---|---|
| TDA4865AJ | eflection boosters for use in vertical deflection systems for frame frequencies up to 200 Hz. |
| TDA4865J | eflection boosters for use in vertical deflection systems for frame frequencies up to 200 Hz. |
| TDA4950 | TV East/West Correction Circuit(TV東/西糾正電路) |
| TDA5651 | INTEGRATED CIRCUIT |
| TDA7088 | FM RECEIVER CIRCUIT FOR BATTERY SUPPLY |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| TDA4686 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Video processor with automatic cut-off control |
| TDA4686WP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Video processor with automatic cut-off control |
| TDA4687 | 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)。