Electrical Specifications

32580B

 

 

Table 9-15. CRT VESA Compatible DAC (RED, GREEN, and BLUE Outputs)

Symbol

Parameter (Note 1)

Min

Max

Unit

Comments

 

 

 

 

 

 

VFR

Full range output voltage

0.6

0.72

V

SETRES = 470

 

 

 

 

 

RL = 37.5

 

 

 

 

 

Digital input = FFh

 

 

 

 

 

 

IFR

Full range output current

16

19.2

mA

SETRES = 470

 

 

 

 

 

RL = 37.5

 

 

 

 

 

Digital input = FFh

 

 

 

 

 

 

INL

Integral linearity error

 

±1

LSB

Note 2

 

 

 

 

 

 

DNL

Differential linearity error

 

±1

LSB

Note 3

 

 

 

 

 

 

tST

Full-scale settling time

 

10

ns

CL = 40 pF, Note 4

tR

Rise time

 

4

ns

Note 5

DDM

DAC to DAC matching

 

5

%

 

 

 

 

 

 

 

COUT

Max output capacitance

 

15

pF

 

PSRR

Power supply rejection ratioNote 6

 

3.5

%

At 0 to 1 MHz

 

 

 

 

 

 

Note 1. Black level = Blank level = 0 mA, 0V.

Note 2. The maximum difference between the ideal (straight) conversion line and the actual conversion curve. Note 3. The maximum difference between the ideal step size (1 LSB) and any actual step size.

Note 4. The input changes from 00h to FFh. The time from output voltage at 50% of step change to output settling (within an error of ±1 LSB) is the full-scale settling time.

Note 5. The input changes from 00h to FFh. The output changes from 10% to 90%.

Note 6. AVCCRT changes within the range of 3V to 3.6V. Output voltage is measured for peak-to-peak maximum change. PSSR is the ratio of the measurement of output at AVCCRT = 3.3V.

AMD Geode™ SC2200 Processor Data Book

387

Page 369
Image 369
AMD SC2200 manual CRT Vesa Compatible DAC RED, GREEN, and Blue Outputs, Symbol Parameter Note Min Max Unit Comments