TDA6170 Datasheet, PDF (5/27 Pages) Infineon Technologies AG – Components for Entertainment Electronics, Satellite Sound IF

Satellite Sound IF
with Wegener Expander
TDA6170X
Data Sheet
1 Features
• Fast I²C-bus controlled (max. 400 kHz)
• PLL controlled sound IF tuning with
10 kHz stepwidth
• Second order high-pass mixer input
• IF MUX for 10.7 MHz
broad / small IF filters
• Two identical high sensitive alignment free
FM demodulators
• Original Wegener PANDA 1^TM expander
• Volume control for individual settings
• 50 µs / 75 µs / J17 de-emphasis for main
sound reception
• Fully ESD protection
Package
P-DSO-28
BIPOLAR
2 Ordering Information
Type
TDA6170X
Package
P-DSO-28-1
Ordering Code
Q67001-A5214
3 General Description
Multistandard satellite sound IF device consisting of a mixer and a voltage controlled oscillator (VCO) as a fre-
quency converter that can be continuously tuned in 10 kHz increments with crystal accuracy by means of a
PLL, two FM limiter amplifiers with PLL FM demodulators followed by two Wegener PANDA1^TM expanders.
The AF signal passes through two switches. Each switch can select the AF sources and the mono / stereo
mode the de-emphasis networks together with the two following volume control stages with audio buffers.
In front of one FM section an IF multiplexer is used to select the IF bandwidth.
The switching functions and settings of the PLL are controlled by an I²C-bus.
3.1 Application
• For use in satellite receivers
Semiconductor Group
1
21.7.99