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PDF SAA7708H Data sheet ( Hoja de datos )
| Número de pieza | SAA7708H | |
| Descripción | Car Radio Digital Signal Processor | |
| Fabricantes | NXP Semiconductors | |
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INTEGRATED CIRCUITS
DATA SHEET
SAA7706H
Car radio Digital Signal Processor
(DSP)
Product specification
File under Integrated Circuits, IC01
2001 Mar 05
1 page  
Philips Semiconductors
Car radio Digital Signal Processor (DSP)
Product specification
SAA7706H
SYMBOL
PARAMETER
CONDITIONS
THD
S/N
total harmonic distortion
signal-to-noise ratio
input signal 0.55 V
(RMS) at 1 kHz;
bandwidth = 20 kHz
input signal at 1 kHz;
bandwidth = 20 kHz;
0 dB reference = 0.55 V
(RMS)
FSDAC
(THD + N)/S
total harmonic distortion-plus-noise to at 0 dB
signal ratio (measured with system
one)
at −60 dB; A-weighted
S/N signal-to-noise ratio (measured with code = 0; A-weighted
system one)
Crystal oscillator
fxtal crystal frequency
MIN.
−
85
−
−
−
−
TYP. MAX. UNIT
−85 −75 dB
90 − dB
−90 −85 dB
−37 −
dB
105 −
dB
11.2896 −
MHz
5 ORDERING INFORMATION
TYPE
NUMBER
SAA7706H
NAME
QFP80
PACKAGE
DESCRIPTION
plastic quad flat package; 80 leads (lead length 1.95 mm);
body 14 × 20 × 2.8 mm
VERSION
SOT318-2
2001 Mar 05
5
5 Page 
Philips Semiconductors
Car radio Digital Signal Processor (DSP)
Product specification
SAA7706H
8 FUNCTIONAL DESCRIPTION
8.1 Analog front-end
The analog front-end consists of two identical sigma-delta
stereo ADCs (ADC1 and ADC2) with several input control
blocks for handling common mode signals and acting as
input selector. A mono version (ADC3) is added for
handling RDS signals. Also a first-order sigma-delta ADC
for tuner level information is incorporated.
The switches S1 and S2 select (see Fig.3) between the
FM_MPX/FM_RDS and the CD, TAPE, AUX, AM,
PHONE and NAV connection to ADC1 and ADC2. The
inputs CD, TAPE, AUX, AM, PHONE and NAV can be
selected with the audio input controls (AIC1/2). The
ground reference (G0 and G1) can be selected to be able
to handle common mode signals for CD or TAPE. The
ground reference G0 is connected to an external pin
and G1 is internally referenced (see Fig.4).
The PHONE and NAV inputs have their own CMRR input
stage and can be redirected to ADC1/2 via the Audio Input
Control (AIC). For pin compatibility with SAA7704,
SAA7705 and SAA7708 the AM is combined with the NAV
input. It is also possible to directly mix PHONE or NAV
(controlled with MIXC) with the front FSDAC channels
after volume control. The FM inputs (FM_MPX/FM_RDS)
can be selected with external pin SEL_FR. The
FM and RDS input sensitivity can be adjusted with VOLFM
and VOLRDS via I2C-bus.
2001 Mar 05
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet SAA7708H.PDF ] | |
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