Video Dac - Samsung S5PC110 Manual

S5PC110_UM

7.13 VIDEO DAC

7.13.1 GENERAL DESCRIPTION
The DAC is a 10-bit 1channel CMOS Digital-to-Analog converter for general applications.
Its maximum conversion rate is 54MHz. It operates at analog power, 2.7V to 3.3V and provides full scale output
currents of 26.7mA at one channel with 75 ohm load for 1.3V.
The DAC has a power down mode to reduce power consumption during inactive periods.
7.13.2 FEATURES
•
Maximum 54MHz Update Rate.
•
10-bit Current Output DAC
•
1.3Vpp Triple Output Compliance Range
•
Internal Voltage Reference
•
Fine Full Scale control: 91.1% ~ 114.8%
•
Power Down Mode
7.13.3 CORE PORT DESCRIPTION
Name
VREF
IREF
IOUT1, IOUT2, IOUT3
Table 7-5 Port Description of Video DAC
Width I/O
- AI Voltage reference for DAC. An Internal voltage reference of
nominally 1.22V is provided. Is driven with an external
reference source.
- AI Full Scale Adjust control. The full-scale current drive on each
of the output channels is determined by the value of a resistor
RSET connected between this terminal and AVSS30A1.
- AO DAC current output. Full scale output is achieved if all input
7 6BTVOUT & VIDEO DAC
Description
7-60