GENERAL DESCRIPTION
Philips Semiconductors have pushed the boundaries of Stereo Sound further with this addition to the successful Terrestrial Digital Sound Decoder family. The SAA7284 device is an application specific version of the existing SAA7283, with guaranteed improved specification on selected parameters, enabling comparable RF performance in conventional intercarrier PLL-IF systems, to that of the SAA7283 in QSS systems.

FEATURES
• Single-chip solution including FM and vision filters, analog demodulator and audio switching
• Dual standard with automatic selection between PAL system I and BGH
• Suitable for conventional intercarrier PLL-IF (single SAW) TV/VCR systems
• Single low-radiation crystal oscillator for improved EMC
• Stereo bitstream audio DACs
• Programmable attenuator for matching levels of NICAM and FM audio sources at the output of the device
• Full EBU specification NICAM 728 demodulation and decoding
• Digital Audio Interface conforming with EBU/IEC 958
• Automatic mute function which switches from NICAM to FM sound when NICAM fails
• Compatible with either single-ended or differential DQPSK input signals
• Microcomputer controlled via I2C-bus (up to 400 kHz specification).

APPLICATIONS
• Television receivers
• Video cassette recorders.