PACVGA203Q CALMIRCO [California Micro Devices Corp], PACVGA203Q Datasheet - Page 2

• Manufacturer Part Number: PACVGA203Q
• Description: VGA Port Companion Circuit
• Manufacturer: CALMIRCO [California Micro Devices Corp]

Product Description (cont’d)
These drivers have nominal 15Ω output impedance
(R
to match the characteristic impedance of the HSYNC &
VSYNC lines of the video cables typically used in PC
applications. Two N-channel FETs provide the level
shifting function required when the DDC controller is
operated at a lower supply voltage than the monitor.
Three 75Ω resistors suitable for terminating the video
signals from the video DAC are also provided. These
resistors have separate input pins to allow insertion of
additional EMI filtering, if required, between the termi-
nation point and the ESD protection diodes. These
resistors are matched to better than 2% for excellent
signal level matching of the R/G/B signals.
Ordering Information
© 2004 California Micro Devices Corp. All rights reserved.
2
Note: This drawing is not to scale.
S
) which can be combined with an external resistor
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
Pins
24
Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.
QSOP-24
Package
PACVGA203Q
PART NUMBERING INFORMATION
Ordering Part
VIDEO_1
VIDEO_2
VIDEO_3
PWR_UP
TERM_1
TERM_2
TERM_3
Number
GNDD
GNDA
V
V
V
CC
CC
CC
PACKAGE / PINOUT DIAGRAM
4
1
2
Standard Finish
1
●
24-pin QSOP
10
11
12
1
2
3
4
5
6
7
8
9
Tel: [phone]
Top View
PACVGA203Q
Part Marking
When the PWR_UP input is driven LOW, the SYNC
inputs can be floated without causing the SYNC buffers
to draw any current from the V
PWR_UP input is LOW the SYNC outputs are driven
LOW.
V
ing V
be powered down, diode D1 blocks any DC current
paths from the DDC_OUT pins back to the powered
down V
The PACVGA203 device is housed in a 24-pin QSOP
package and is available with optional lead-free finish-
ing.
CC
24
23
22
21
20
19
18
17
16
15
14
13
3 can be derived from V
CC
●
CC
3 to V_BIAS. In applications where V
4 rail via the top ESD protection diodes.
Fax: [phone]
SD2
SD1
SYNC_OUT2
SYNC_IN2
SYNC_OUT1
SYNC_IN1
DDC_OUT2
DDC_IN2
DDC_IN1
DDC_OUT1
V
V_BIAS
CC
3
PACVGA203QR
Ordering Part
Number
Lead-free Finish
1
CC
●
4, if desired, by connect-
CC
www.calmicro.com
PACVGA203
4 supply. When the
PACVGA203QR
Part Marking
CC
4 may
12/07/04