Specifications are subject to change without notice
MEDIATEK CONFIDENTIAL, NO DISCLOSURE
23
9-4 Built-in Video-DAC Specifications
Input Codes for Video Application:
NTSC
NTSC w/setup
525_I
525_I w/setup
525_P
WHITE (235)
Programable,
Current setting:
3297
Programable,
Current setting:
3297
Programable,
Current setting:
3297
Programable,
Current setting:
3297
Programable,
Current setting:
3290
BLACK (16)
960 1120 960 1120 1008
PEDESTAL
960 960 960 960 1008
SYNC TIP
64 64 64 64 64
525_P w/s
PAL
625_I
625_P
RGB
WHITE (235)
---
Programable,
Current setting:
3290
Programable,
Current setting:
3290
Programable,
Current setting:
3290
Programable,
Current setting:
2282
BLACK (16)
--- 1008
1008
1008 0
PEDESTAL
--- 1008
1008
1008
-
SYNC TIP
--- 64 64 64
-
9-5 Video Output Voltage Level:
High
Low
(Op
Impedance Mode:
I
OUT
(max) = 19.4152 / R
REF
, R
REF
= 2.2 KOhm
V
OUT
(max) = R
LOAD
* I
OUT
(max) = 1.3237 V, R
LOAD
= 150 Ohm
V
OUT
= D
IN
/ 4095 * V
OUT
(max) = D
IN
* R
LOAD
* 0.0047412 / R
REF
Impedance Mode:
I
OUT
(max) = 19.4152 / R
REF
, R
REF
= 560 Ohm
V
OUT
(max) = R
LOAD
* I
OUT
(max) = 1.3 V, R
LOAD
= 37.5 Ohm ( 75 Ohm || 75 Ohm )
V
OUT
= D
IN
/ 4095 * V
OUT
(max) = D
IN
* R
LOAD
* 0.0047412 / R
REF
9-6 Video DAC DC Electrical Characteristics
erating Free-Air Temperature, AVDD 3.3V, DVDD = 3.3V).
Analog Output
MIN
TYP
MAX
UNIT
Full Scale Output Current CVBS/Y/C/R/G/B (low impedance mode)
33.6
34.6
34.9
mA
Full Scale Output Current CVBS/Y/C/R/G/B (high impedance mode)
8.40
8.65
8.73
mA
LSB current CVBS/Y/C/R/G/B (low impedance mode)
32.8
33.8
34.1
uA
LSB current CVBS/Y/C/R/G/B (high impedance mode)
8.20
8.45
8.52
uA
DAC-to-DAC Mis-Matching
--
1.28
--
%
Mediatek
Confidential
Only
For
SAC