SAA7129 Philips Semiconductors, SAA7129 Datasheet - Page 49

• Manufacturer Part Number: SAA7129
• Description: Digital video encoder
• Manufacturer: Philips Semiconductors

Philips Semiconductors
Product specification
Digital video encoder
SAA7128H; SAA7129H
9.1
Analog output voltages
The analog output voltages are dependent on the open-loop voltage of the operational amplifiers for full-scale conversion
(typical value 1.375 V), the internal series resistor (typical value 2 ), the external series resistor and the external load
impedance.
The digital output signals in front of the DACs under nominal conditions occupy different conversion ranges, as indicated
100
in Table 76 for a
colour bar signal.
100
Values for the external series resistors result in a 75
load.
Table 76 Digital output signals conversion range
CONVERSION RANGE (peak-to-peak)
Y (VBS)
CVBS, SYNC TIP-TO-PEAK
RGB (Y)
SYNC TIP-TO-WHITE
CARRIER (digits)
BLACK-TO-WHITE AT GDY = GDC = 6 (digits)
(digits)
1016
881
712
2000 Mar 08
49