PACVGA200QR 데이터 시트보기 (PDF) - ON Semiconductor

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PACVGA200QR

VGA Port Companion Circuit

ON Semiconductor 

PACVGA200

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 10 ns. Three different values of C1 were used: 0 pF, 50 pF and

100 pF. The results are plotted in Figure 2.

VCC4

+5 V

3.3 V

0V

SYNC_IN

ICC4

SYNC_OUT

C1

Figure 1. Sync Buffer ICC4 Test Circuit

Frequency (kHz)

Figure 2. ICC4 vs. SYNC_IN Frequency Performance Data

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