ADV7123KSTZ50 Просмотр технического описания (PDF) - Analog Devices

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ADV7123KSTZ50

CMOS, 330 MHz Triple 10-Bit High Speed Video DAC

Analog Devices 

ADV7123

Pin No.

37

38

Mnemonic

RSET

PSAVE

Description

A resistor (RSET) connected between this pin and GND controls the magnitude of the full-scale video signal.

Note that the IRE relationships are maintained, regardless of the full-scale output current. For nominal video

levels into a doubly terminated 75 Ω load, RSET = 530 Ω. The relationship between RSET and the full-scale

output current on IOG (assuming ISYNC is connected to IOG) is given by:

RSET (Ω) = 11,445 × VREF (V)/IOG (mA)

The relationship between RSET and the full-scale output current on IOR, IOG, and IOB is given by:

IOG (mA) = 11,445 × VREF (V)/RSET (Ω) (SYNC being asserted)

IOR, IOB (mA) = 7989.6 × VREF (V)/RSET (Ω)

The equation for IOG is the same as that for IOR and IOB when SYNC is not being used, that is, SYNC tied

permanently low.

Power Save Control Pin. Reduced power consumption is available on the ADV7123 when this pin is active.

Rev. D | Page 11 of 24

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