TDA4340X - Siemens Semiconductor

TDA4340X Stereo Decoder/Noise Blanker

Power Supply, Reference Current A temperature stable, low noise reference voltage generator is used for better ripple rejection and for the generation of a reference current. This current is used as a time base for the deemphasis, the gate time of the pulse former, and the pilot cancellation, avoiding temperature and tolerance effects. MPX Input, MPX Filter.

Features

• Internal reference voltage source
• Adjustment free oscillator with ceramic resonator 456 kHz
• Pilot dependent mono/stereo switching with hysteresis P-DSO-20-1
• Stereo indicator output
• Analogue control of mono/stereo change over (stereo noise control, SNC)
• Pilot canceller (19 kHz)
• Adjacent channel noise suppression (114 kHz)
• MUTE facility
• Analogue control of deemphasis (high cut control, HCC).
• Stereo inputs for additional signal source at output amplifiers
• Interference noise detector with integrated high-pass filter
• (IF level signal or MPX input)
• MPX input low-pass filte.