TDA3845中文资料Quasi split-sound circuit and AM demodulator数据手册恩XP规格书

描述 Description

GENERAL DESCRIPTION
The TDA3845 is a quasi split-sound IF circuit which is designed to provide high performance television FM/AM sound.FEATURES
• Power supply from 5 V (200 mW) to 8 V source also an alternative 12 V source (12 V not for TDA3845T)
• Gain controlled wideband IF amplifier (AC coupled with three stages)
• High precision internal 90°phase shifter for quadrature demodulator
• Amplitude detector for gain control which operates as a peak detector for FM sound and as a mean level detector for AM sound (switchable)
• In-phase wideband synchronous demodulator for AM detection
• Stabilizer circuit for ripple rejection and constant output signals
• ESD protection for all pins
• Suitable for all FM standards and L as well as L-accent standard
• NICAM compatible.

特性 Features

• Power supply from 5 V (200 mW) to 8 V source also an alternative 12 V source (12 V not for TDA3845T)
• Gain controlled wideband IF amplifier (AC coupled with three stages)
• High precision internal 90°phase shifter for quadrature demodulator
• Amplitude detector for gain control which operates as a peak detector for FM sound and as a mean level detector for AM sound (switchable)
• In-phase wideband synchronous demodulator for AM detection
• Stabilizer circuit for ripple rejection and constant output signals
• ESD protection for all pins
• Suitable for all FM standards and L as well as L-accent standard
• NICAM compatible.