TDA6170X Infineon Technologies, TDA6170X Datasheet - Page 10

• Manufacturer Part Number: TDA6170X
• Manufacturer: Infineon Technologies

Specifications of TDA6170X

• Lead Free Status / RoHS Status: Supplier Unconfirmed

7.3.1
Address Byte
Progr. Divider Byte 1
Progr. Divider Byte 2
Control Byte 1
Control Byte 2
Control Byte 3
Address Byte 1
Address Byte 2
7.3.2
7.4 Converter Mixer
In the converter mixer the sound subcarriers (frequency band approx. 5 to 9.9 MHz) contained in the base-
band of the received composite satellite signal are converted to an output frequency of 10.52 MHz and 10.7
MHz for example. The converter consists of a high-pass input filter followed by a double balanced mixer and a
low impedance output.
The signal of the on chip voltage controlled oscillator (VCO) is applied to the PLL input.
7.5 IF Limiter with Demodulator
The two limiter amplifiers are implemented as balanced five stage, capacitively coupled differential amplifiers.
The three inputs are designed as high-pass inputs. The load resistors for the IF filters are connected to
ground.
The output signals of the limiter amplifiers are fed directly to the internal PLL FM demodulators.
The demodulated AF signals are fed to the input of a pre volume control part in front of the expander the de-
emphasis networks and audio switches.
Semiconductor Group
Z2
0
0
0
0
1
1
1
1
1. Chip address (CAS) Pin 5 grounded
2. Chip address (CAS) Pin 5 open
Control Bits
Byte
Logic Allocation
IF-Muting
Z1
0
0
1
1
0
0
1
1
1
2
Z0
0
1
0
1
0
1
0
1
IF1
on
off
on
off
off
off
off
off
0
0
0
1
1
1
0
0
IF-Source
PVL2 PVL1 PVL0 PVR2 PVR1 PVR0
VL2
IF2
on
on
off
off
off
off
off
off
5I
1
0
0
1
1
N11
VL1
IF3
N5
Z2
off
off
off
on
on
on
off
off
0
0
0
expanders are working, audio = stereo
expanders are working, audio = mono
expanders are working, audio = mono
de-emphasis = 50 ; audio = mono
de-emphasis = 75 ; audio = mono
de-emphasis = J17; audio = mono
External audio
Mute
Data Sheet
N10
VL0
N4
Z1
0
0
0
6
Data
VR2
N9
N3
Z0
0
0
0
VR1
N8
N2
X
0
1
1
VR0
MA
N7
N1
X
0
1
Function
R/W
N6
N0
X
X
X
0
0
A
A
A
A
A
A
A
A
=H44
=H46
TDA6170X
Remarks
21.7.99