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Specifications are subject to change without notice
9
Electrical Characteristics
9-1 DC Characteristics
Symbol
V
(3.3V) Output voltage high (3.3V IO)
OH
V
(3.3V) Output voltage low (3.3V IO)
OL
Rpu
Pull-up Resistance
Rpd
Pull-down Resistance
FOO
Offset voltage between FOO zero output and V
OFF
TRO
Offset voltage between TRO zero output and V
OFF
DMO
Offset voltage between DMO zero output and V
OFF
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
V
out
Ro
R
_
L
min
C
_
L
max
S/(THD+N)
DR
SNR
Channel
Separation
Parameters
(*I
= 2 ~ 16mA)
OH
(*I
= 2 ~ 16mA)
OL
PARAMETER
Output swing level:
Digital i/p level =0 dBFS , ADACVDD =3.3V
(V
= 1.0 * ADACVDD / 3.3)
out
Output impedance @ 1kHz
Minimum resister load
Maximum capacitor load
S/(THD+N) @ 0 dBFS;
f
= 1kHz; Fs = 48kHz, A-weighted
in
Dynamic Range
Signal to noise ratio; A-weighted
Close-talk of Left and Right Channel
MEDIATEK CONFIDENTIAL, NO DISCLOSURE
Min
2.4
-
40
40
-50
REF
-40
REF
-30
REF
MIN.
0.9
5
21
Typ
Max
Unit
-
-
V
-
0.4
V
75
190
KΩ
75
190
KΩ
0
50
mV
0
40
mV
0
30
mV
TYP.
MAX.
UNIT
1.0
1.1
V
P
50
100
K
20
PF
83
dBr(A)
83
dBr(A)
90
dBr(A)
85
dB
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