SAA7705H Просмотр технического описания (PDF) - Philips Electronics
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SAA7705H Datasheet PDF : 60 Pages
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Philips Semiconductors
Car radio Digital Signal Processor (DSP)
Preliminary specification
SAA7705H
The DSP contains a basic program that enables a set with:
• AM/FM reception
• Sophisticated FM weak signal functions
• Music Search System (MSS) detection for tape
• Dolby-B tape noise reduction system
• CD play with compressor function
• Separate bass and treble tone control and fader or
balance control additional to the equalizers.
4 QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
Supply
VDDD3V
digital supply voltage
3.3 V for DSP core
VDDD3Vx pins with respect to VSS 3
3.3
3.6
V
IDDD3V
supply current of the
high activity of the DSP at
−
3.3 V digital DSP core 27 MHz DSP frequency
80
110
mA
VDDD5V
supply voltage 5 V for
VDDDV5x pins with respect to VSS 4.5
5
periphery
5.5
V
IDDD5V
supply current of the 5 V
digital periphery
−
3
5
mA
VDDA
analog supply voltage
3.3 V
VDDAx pins with respect to VSS 3
3.3
3.6
V
IDDA
analog supply current zero input and output signal
−
40
50
mA
Analog level inputs (AML and FML); Tamb = 25 °C; VDDA1 = 3.3 V; unless otherwise specified
S/NLAD
level-ADC signal-to-noise 0 to 29 kHz bandwidth;
ratio
maximum input level;
unweighted
48
54
−
dB
Vi(LAD)
input voltage level-ADC
for full-scale
0
−
VDDA1 V
Analog inputs; Tamb = 25 °C; VDDA1 = 3.3 V; unless otherwise specified
THDFMMPX
total harmonic distortion input signal 0.35 V (RMS) at −
FMMPX input
1 kHz; bandwidth = 19 kHz;
−
note 1
−70
0 .03
−65
dB
0.056 %
S/NFMMPX(m) signal-to-noise ratio
input signal at 1 kHz;
80
83
−
dB
FMMPX input mono
0 dB reference = 0.35 V (RMS);
bandwidth = 19 kHz; note 1
S/NFMMPX(s) signal-to-noise ratio
input signal at 1 kHz;
74
77
−
dB
FMMPX input stereo
0 dB reference = 0.35 V (RMS);
bandwidth = 40 kHz; note 1
THDCD
total harmonic distortion input signal 0.55 V (RMS) at −
CD inputs
1 kHz; input gain = 1;
−
bandwidth = 20 kHz
−83
−78
dB
0.007 0.013 %
S/NCD
signal-to-noise ratio CD input signal at 1 kHz;
81
84
−
dB
inputs
0 dB reference = 0.55 V (RMS);
bandwidth = 20 kHz
THDAM
total harmonic distortion input signal 0.55 V (RMS) at −
AM inputs
1 kHz; bandwidth = 5 kHz
−
−80
0 .01
−76
dB
0.016 %
1999 Aug 16
4
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