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Specifications are subject to change without notice
MEDIATEK CONFIDENTIAL, NO DISCLOSURE
21
9
Electrical Characteristics
9-1 DC Characteristics
Symbol
Parameters
Min
Typ
Max
Unit
V
OH
(3.3V) Output voltage high (3.3V IO)
(*I
OH
= 2 ~ 16mA)
2.4 - - V
V
OL
(3.3V) Output voltage low (3.3V IO)
(*I
OL
= 2 ~ 16mA)
- - 0.4
V
Rpu Pull-up
Resistance
40
75
190
K
Ω
Rpd Pull-down
Resistance
40
75
190
K
Ω
FOO
OFF
Offset voltage between FOO zero output and V
REF
-50
0
50
mV
TRO
OFF
Offset voltage between TRO zero output and V
REF
-40
0
40
mV
DMO
OFF
Offset voltage between DMO zero output and V
REF
-30
0
30
mV
Note * : The driving current of some IO pad are programmable according to the different application and
environment . All setting will be defined according to the F/W progress and test result.
9-2 Built-in Audio-DAC Characteristics
Note *: All parameters is measured on MediaTek’s DVD player reference DVD board, the actual performance depends on
different PCB design.
SYMBOL
PARAMETER
MIN.
TYP.
MAX.
UNIT
V
out
Output swing level:
Digital i/p level =0 dBFS , ADACVDD =3.3V
(V
out
= 1.0 * ADACVDD / 3.3)
0.9 1.0 1.1 V
P
Ro
Output impedance @ 1kHz
50
100
R
L
_
min
Minimum resister load
5
K
C
L
_
max
Maximum capacitor load
20
PF
S/(THD+N)
S/(THD+N) @ 0 dBFS;
f
in
= 1kHz; Fs = 48kHz, A-weighted
83
dBr(A)
DR Dynamic
Range
83
dBr(A)
SNR
Signal to noise ratio; A-weighted
90
dBr(A)
Channel
Separation
Close-talk of Left and Right Channel
85
dB
Mediatek
Confidential
Only
For
SAC