TUA4300G Infineon Technologies Corporation, TUA4300G Datasheet - Page 3

• Manufacturer Part Number: TUA4300G
• Description: One Chip Car Radio, AM/FM Receiver
• Manufacturer: Infineon Technologies Corporation

FS: 04/93
3. Stereodecoder
This part provides the stereo decoder function and noise blanking for FM car radio applications.
Features
4. AM Mode
In this mode, the IC is comprised of a mixer, an oscillator with a divider by 8 or 10, a prestage control, an IF post
amplification, 2nd mixer with AGC to convert the 1st IF to the 2nd IF, 2nd local oscillator ( buffer for external source),
automatic gain controlled amplifier and quasisynchronous demodulator.
The same oscillator is used in AM and FM mode.
Features
SIEMENS AG
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HL DOK
- Internal reference voltage source
- Adjustment free oscillator with ceramic resonator 456 kHz
- Pilot dependent mono/stereo switching with hysteresis
- Stereo indicator output
- Analog mono/stereo blend control (stereo noise control, SNC)
- Pilot canceller (19 kHz)
- Adjacent channel noise suppression (114 kHz)
- Mute facility
- Analog deemphasis control (high cut control, HCC)
- Interference noise detector with integrated high-pass filter (IF level signal or MPX input)
- MPX-input low-pass filter
- Noise blanking at MPX -demodulator outputs.
- L, R audio is common to AM.
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2nd mixer with AGC
1st IF amp; use of CER filter or crystal filter possible
2nd LO with quartz or external source
Output for AM IF counter
Wide range 2nd IF AGC amplifier
Quasi synchronous demodulator for AM mode
Fast AM search tuning stop feature
HCC for AM
Functional Description, Application
V66047-S695-G100-G1
TUA 4300 G
IC-SPECIFICATION
12.11.96
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