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SAA7824 Datasheet, PDF (69/89 Pages) NXP Semiconductors – CD audio decoder, digital servo and filterless DAC with integrated pre-amp and laser control (PhonIC)
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Philips Semiconductors
CD audio decoder, digital servo and filterless
DAC with integrated pre-amp and laser control
Product specification
SAA7824
10 CHARACTERISTICS
VDDD = 1.65 to 1.95 V; VDDA = 3.0 to 3.6 V; VSS = 0 V; Tamb = 0 to 70 °C; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP. MAX.
Supplies
VDDD
IDDD
digital supply voltage
digital supply current
n = 1 mode
n = 2 mode
1.65
−
−
n = 4 mode
−
VDDA
analog supply voltage
3.0
IDDA
analog supply current
n = 1 mode
−
n = 2 mode
−
n = 4 mode
−
DEM DAC output (Vpos = 3.3 V, VSS = 0 V, Vneg = 0 V and Tamb = 25 °C)
1.8
1.95
4.0
−
5.0
−
6.0
−
3.3
3.6
34
−
34
−
34
−
DIFFERENTIAL OUTPUTS: PINS DACLN, DACLP, DACRN AND DACRP
S/N
signal-to-noise ratio
note 1
−
(THD + N)/S total harmonic distortion note 2
−
plus noise-to-signal ratio
90
−
−
−80
Headphone buffer (Vpos = 3.3 V, VSS = 0 V, Vneg = 0 V and Tamb = 25 °C)
OUTPUTS: PINS BUFOUTR AND BUFOUTL
S/N
signal-to-noise ratio
(THD + N)/S
total harmonic distortion
plus noise-to-signal ratio
note 3
−
85
−
−
−
−80
INPUTS: PINS BUFINR AND BUFINL
Zi
input impedance
−
47
−
Servo and decoder analog functions (VDDA = 3.3 V, VSSA = 0 V and Tamb = 25 °C)
REFERENCE GENERATOR: PIN IREF
VIREF
IREF
RIREF(ext)
reference voltage level
input reference current
external resistance
DIODE VOLTAGE INPUT: PINS D1 TO D4, R1 AND R2
Vi(D)(max)
maximum input voltage for voltage mode
central diode input signal
Vi(R)(max)
maximum input voltage for voltage mode
satellite diode input signal
Vref(int)
BHF
internally generated
reference voltage
high frequency bandwidth
(D1 to D4)
Vref_sel = 10
Vref_sel = 11
at 0 dB
Gtol(HF)
high frequency gain
tolerance
1.16
1.26
1.36
−
50
−
−
24
−
0
−
960
0
−
960
−
note 4 −
−
note 5 −
5
−
−
−20
−
+20
UNIT
V
mA
mA
mA
V
mA
mA
mA
dB
dB
dB
dB
kΩ
V
µA
kΩ
mV
mV
V
V
MHz
%
2003 Oct 01
69
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