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參數(shù)資料
| 型號： | SAA7712 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Sound effects DSP |
| 中文描述： | DSP的音效 |
| 文件頁數(shù)： | 32/44頁 |
| 文件大?。?/td> | 178K |
| 代理商： | SAA7712 |
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1999 Aug 05
32
Philips Semiconductors
Preliminary specification
Sound effects DSP
SAA7712H
13 ANALOG OUTPUTS CHARACTERISTICS
T
amb
= 25
°
C; V
DDA2
= 3.3 V; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
VREFDA
Z
VREFDA
voltage on pin VREFDA
impedance on pin VREFDA
with respect to V
DDA2
V
SSA2
with respect to V
DDA2
with respect to V
SSA2
maximum I
2
S-bus signal;
R
L
> 5 k
R
L
> 5 k
47
0.62
50
37
37
0.7
53
0.82
%
k
k
V
V
o(rms)
AC output voltage of operational
amplifiers (RMS value)
average DC output voltage of
operational amplifiers
low pull-up current to V
DDA2
on
pin POM
high pull-up current to V
DDA2
on
pin POM
power supply ripple rejection DACs
(input via I
2
S-bus)
maximum deviation in output level
(plus or minus) of the 4 DAC
current outputs
crosstalk between all outputs in
the audio band
output short-circuit current
DAC resolution
(THD + N)/S total harmonic
distortion-plus-noise to signal ratio
V
O(AV)
1.5
1.65
1.8
V
I
pu(POML)
voltage on pin POM < 0.6 V
3.3
5
μ
A
I
pu(POMH)
voltage on pin POM > 0.8 V
50
75
μ
A
PSRR
DAC
f
ripple
= 1 kHz; V
ripple
= 100 mV
(peak value); C
VREFDA
= 22
μ
F
with respect to the average of
the 4 outputs; full-scale output
45
60
dB
I
o(max)
0.38
dB
α
ct
one output digital silence, other
three maximum volume
output short-circuited to ground
69
dB
I
o(sc)
RES
DAC
20
mA
bits
dBA
18
f = 1 kHz;
V
o(ref)
= 0.72 V (RMS);
A-weighted
V
o(ref)
= 0.72 V (RMS);
f = 1 kHz;
60 dB; A-weighted
f = 20 Hz
17 kHz;
V
o(ref)
= 0.72 V (RMS);
A-weighted
A-weighted
75
60
DR
DAC
dynamic range of DAC
90
96
dBA
DS
DAC
digital silence of DAC
107
102
dBA
V
n(o)(rms)
digital silence noise level at output
(RMS value)
intermodulation
distortion/comparator
maximum sample frequency
bandwidth DAC
load capacitance on DAC outputs
load resistance on DAC voltage
outputs
3
8
μ
V
d
f = 60 Hz and 7 kHz, ratio 4 : 1
70
55
dB
f
s(max)
B
DAC
C
L(DAC)
R
L(DAC)
48
5
1
2
f
s
2.5
kHz
kHz
nF
k
at
3 dB
DC decoupled
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