WELTREND WT8048N3, WT8048N4, WT8048N2, WT8048N1, WT8048 Datasheet
WT8048
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DESCRIPTION
The WT8048 is a 8 pin P-DIP package IC, designed for the application of Power Saving
Monitor or Green Monitor.
As per DPMS proposal, the WT8048 provides a detective circuit of monitor power
management for the convenience of designers in designing Power Saving Monitor.
FEATURES
{ Accepting two seperated H&V synchronous signals with positive/ negative polarity.
DPMS (Display Power Management
Signaling) Detector for Green Monitor
Aug. 31, 1995
{ Capable of processing horizontal frequency between 0Hz to 100kHz, and vertical
frequency between 0Hz to 100Hz.
{ Power Saving mode - It can detect the conditions of monitor to decide which will be
selected as following: ON mode / STAND_BY mode / SUSPEND mode / OFF mode.
{ An Override mode is defined to override the DPMS function during the design, test,
burn-in manufacture or diagnostic process if desired.
APPLICATION
{ DPMS mode's detection for Green Monitor
Weltrend Semiconductor, Inc. 2F., No. 24, Ind. E. 9th Rd., Science-Based Ind. Park,
Hsin-Chu, Taiwan, R. O. C.
Tel: 886-35-780241 Fax: 886-35-7704191
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ORDERING INFORMATION
Part No. Package Description
WT8048 P-DIP 8L OSC with 32768Hz Crystal
WT8048N1 P-DIP 8L 1. OSC with external resistor
WT8048N2 P-DIP 8L 1. OSC with external resistor
*WT8048N3 P-DIP 8L 1. OSC with 3.58MHz resonator
*WT8048N4 P-DIP 8L 1. OSC with 3.58MHz resonator
Note: "*" means "not available".
WT8048
2. With mute function
2. Without mute function
2. With mute function
2. Without mute function
PIN CONFIGURATION
WT8048N1 / N3
HIN
VIN
OSC
VSS
2
3
4
81
7
6
5
VDD
OFF
STD_BY +
SUSPEND
MUTE
WT8048 / N2 / N4
HIN
VIN
OSC
VSS
2
3
4
81
7
6
5
VDD
OFF
SUSPEND
STD_BY
2
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WT8048
ABSOLUTE MAXIMUM RATING
ITEM SYMBOL VALUE UNIT
Digital Supply Voltage V
Horizontal Sync. Input Voltage V
Vertical Sync. Input Voltage V
Power dissipation P
Operating Temperature Range T
Storage Temperature Range T
DD
HS
VS
D
OPT
STG
RECOMMENDED OPERATING CONDITIONS
ITEM SYMBOL MIN. TYP. MAX. UNIT
Digital Supply Voltage VDD(5) 4.5 5 5.5 V
Supply Current (Stand-by) I
Synchronous Input Voltage Low V
Synchronous Input Voltage High V
P
IL
IH
2.4 4 5.5 V
5.5 V
VDD(5)+0.3 V
VDD(5)+0.3 V
30 mW
0¡ã70 ¢J
-40¡ã125 ¢J
1 mA
0.8 V
PP
PP
PP
PP
3
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