參數(shù)資料
型號: TDA4887
廠商: NXP Semiconductors N.V.
英文描述: 160 MHz bus-controlled monitor video preamplifier
中文描述: 160 MHz的總線控制顯示器的視頻前置放大器
文件頁數(shù): 3/68頁
文件大?。?/td> 425K
代理商: TDA4887
2001 Oct 19
3
Philips Semiconductors
Product specification
160 MHz bus-controlled monitor video
preamplifier
TDA4887PS
1
FEATURES
160 MHz pixel rate
2.7 ns rise time, 3.6 ns fall time
I
2
C-bus control
I
2
C-bus data buffer for synchronization of adjustments
8-bit Digital-to-Analog Converters (DACs)
200 ns input clamping pulse
4.6 V (p-p) output signal
Brightness control with grey scale tracking for
user-friendly performance (4 dB more than TDA4885
and TDA4886)
Brightness control without grey scale tracking for easy
alignment
On Screen Display (OSD) mixing with 50 MHz pixel rate
OSD contrast
Negative feedback for DC-coupled cathodes
Especially for AC-coupled cathodes
– Bus controlled black level adaptable to post amplifier
type
– Internal positive feedback
– DAC outputs for black level restoration
Integrated black level storage capacitors
Beam current limiting
Subcontrast/contrast modulation
Adjustable pedestal blanking
Sync clipping.
2
GENERAL DESCRIPTION
The TDA4887PS is a monolithic integrated RGB
preamplifier for colour monitor systems (e.g. 15" and 17")
with I
2
C-bus control and OSD. In addition to bus control,
beam current limiting and contrast modulation are
possible. The IC offers brightness control with or without
grey scale tracking for easy alignment. The signals are
amplified to drive commonly used video modules or
discrete solutions. A choice can be made between
individual black level control with negative feedback from
the cathode (DC coupling), or black level control with
positive feedback and three DAC outputs for external
cut-off control (AC coupling).
The circuit can be used with special advantages in
conjunction with the TDA485x monitor deflection IC family.
3
ORDERING INFORMATION
TYPE NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
TDA4887PS
SDIP24
plastic shrink dual in-line package; 24 leads (400 mil)
SOT234-1
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