PACVGA203QR datasheet(6/8 Pages) CALMIRCO

Part #	PACVGA203QR

Description	VGA Port Companion Circuit

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Manufacturer	CALMIRCO [California Micro Devices Corp]

Direct Link	http://www.calmicro.com

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430 N. McCarthy Blvd., Milpitas, CA 95035-5112

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Tel: 408.263.3214

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Fax: 408.263.7846

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www.calmicro.com

12/07/04

PACVGA203

Test Circuit Information

Average Current through VCC4 (ICC4)

The circuit in Figure 1 was used to characterize ICC4 current as SYNC_IN signal frequency varies. A square wave

signal was connected to the input of one of the SYNC buffers (i.e. pin 19 or pin 21). The frequency of this signal

was varied between 0 and 100 kHz. The risetime and falltime was kept constant at 10ns. Three different values of

C1 were used: 0pF, 50pF and 100pF. The results are plotted in Figure 2.

Figure 1. Sync Buffer ICC4 Test Circuit

Figure 2. ICC4 vs. SYNC_IN Frequency Performance Data

0V

VCC4

+5V

SYNC_IN

ICC4

C1

SYNC_OUT

3.3V

ICC4 vs. SYNC_IN Frequency

0

10

20

30

40

50

60

70

80

90

100

0

20

40

60

80

100

Frequency, kHz

100pF

50pF

0pF

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PACVGA203QR Datasheet(PDF) 6 Page - California Micro Devices Corp

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