SAA7706H/N107 NXP Semiconductors, SAA7706H/N107 Datasheet - Page 15

• Manufacturer Part Number: SAA7706H/N107
• Manufacturer: NXP Semiconductors

Specifications of SAA7706H/N107

• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

Philips Semiconductors
8.1.4
These pins are used as negative and positive reference for
the ADC1, 2, 3 and the level-ADC. They have to be directly
connected to the V
performance (see Figs 25 and 26).
8.1.5
Via this pin the midref voltage of the ADCs is filtered. This
midref voltage is used as half supply voltage reference of
the ADCs. External capacitors (connected to V
prevent crosstalk between switch cap DACs of the ADCs
and buffers and improves the power supply rejection ratio
of all components. This pin is also used in the application
as reference for the inputs TAPE and CD (see Fig.4). The
voltage on pin VREFAD is determent by the voltage on
pins VDACP and VDACN1 or VDACN2 and is found as:
2001 Mar 05
V
handbook, full pagewidth
VREFAD
Car radio Digital Signal Processor (DSP)
Fig.7
(dB)
100
150
200
250
P
P
50
=
0
INS
IN
Overall frequency response curve analog-to-digital audio path decimation based on a 44.1 kHz sample
frequency.
0
V
--------------------------------------------------- -
VREFAD
VDACP
VDACN1, VDACN2
SSA1
–
2
V
VDACN1,2
and filtered V
100
AND
DDA1
VDACP
for optimal
SSA1
200
)
15
8.1.6
The analog input circuit has separate power supply
connections to allow maximum filtering. These pins are
V
power supply.
8.2
The left and right channels are converted and
down-sampled by the ADF1_a, ADF1_b. This data stream
is converted into a serial format and fed to the DSP1 and
DSP2 source selectors. In Figs 7 and 8 the overall and
detailed frequency response curves of the
analog-to-digital audio decimation path based on a
44.1 kHz sample frequency are shown.
SSA1
for the analog ground and V
The signal audio path for input signals CD,
TAPE, AUX, PHONE, NAV and AM
300
S
UPPLY OF THE ANALOG INPUTS
400
DDA1
f (kHz)
Product specification
SAA7706H
for the analog
MGT463
500