SAA7712H Datasheet, PDF (32/44 Pages) NXP Semiconductors – Sound effects DSP

Philips Semiconductors
Sound effects DSP
Preliminary specification
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
V_o(rms)
V_O(AV)
voltage on pin VREFDA
impedance on pin VREFDA
AC output voltage of operational
amplifiers (RMS value)
average DC output voltage of
operational amplifiers
with respect to V_DDA2 − V_SSA2
with respect to V_DDA2
with respect to V_SSA2
maximum I²S-bus signal;
R_L > 5 kΩ
R_L > 5 kΩ
I_pu(POML)
low pull-up current to V_DDA2 on
pin POM
voltage on pin POM < 0.6 V
I_pu(POMH)
high pull-up current to V_DDA2 on
pin POM
voltage on pin POM > 0.8 V
PSRR_DAC
∆I_o(max)
power supply ripple rejection DACs
(input via I²S-bus)
maximum deviation in output level
(plus or minus) of the 4 DAC
current outputs
f_ripple = 1 kHz; V_ripple = 100 mV
(peak value); C_VREFDA = 22 µF
with respect to the average of
the 4 outputs; full-scale output
α_ct
crosstalk between all outputs in one output digital silence, other
the audio band
three maximum volume
I_o(sc)
RES_DAC
(THD + N)/S
output short-circuit current
DAC resolution
total harmonic
distortion-plus-noise to signal ratio
output short-circuited to ground
f = 1 kHz;
V_o(ref) = 0.72 V (RMS);
A-weighted
DR_DAC
dynamic range of DAC
V_o(ref) = 0.72 V (RMS);
f = 1 kHz; −60 dB; A-weighted
DS_DAC
digital silence of DAC
f = 20 Hz − 17 kHz;
V_o(ref) = 0.72 V (RMS);
A-weighted
V_n(o)(rms)
digital silence noise level at output A-weighted
(RMS value)
d
intermodulation
distortion/comparator
f = 60 Hz and 7 kHz, ratio 4 : 1
f_s(max)
B_DAC
C_L(DAC)
R_L(DAC)
maximum sample frequency
bandwidth DAC
load capacitance on DAC outputs
load resistance on DAC voltage
outputs
at −3 dB
DC decoupled
47
−
−
0.62
1.5
3.3
50
45
−
−
−
−
90
−
−
−
48
−
−
5
50
53
%
37
−
kΩ
37
−
kΩ
0.7 0.82 V
1.65 1.8 V
−
5
µA
−
75
µA
60
−
dB
−
0.38 dB
−
−69 dB
−
20
mA
18
bits
−75 −60 dBA
96
−
dBA
−107 −102 dBA
3
8
µV
−70 −55 dB
−
−
kHz
1_⁄2fs
−
kHz
−
2.5 nF
−
−
kΩ
1999 Aug 05
32