描述 Description

GENERAL DESCRIPTION
The TDA9800 is a monolithic integrated circuit for vision and sound IF signal processing in TV and VTR sets.FEATURES
? Suitable for negative vision modulation
? Applicable for IF frequencies of 38.9 MHz, 45.75 MHz and 58.75 MHz
? Gain controlled wide band VIF amplifier (AC coupled)
? True synchronous demodulation with active carrier
?? regeneration (ultra-linear demodulation, good
?? intermodulation figures, reduced harmonics and
?? excellent pulse response)
? Peak sync AGC for negative modulation
? Video amplifier to match sound trap and sound filter
? AGC output voltage for tuner; adjustable take-over point (TOP)
? AFC detector without extra reference circuit
? Alignment-free FM-PLL detector with high linearity
? Stabilizer circuit for ripple rejection and to achieve
?? constant output signals
? 5 to 8 V positive supply voltage range, low power
?? consumption (300 mW at +5 V supply voltage).

特性 Features

? Suitable for negative vision modulation
? Applicable for IF frequencies of 38.9 MHz, 45.75 MHz and 58.75 MHz
? Gain controlled wide band VIF amplifier (AC coupled)
? True synchronous demodulation with active carrier
?? regeneration (ultra-linear demodulation, good
?? intermodulation figures, reduced harmonics and
?? excellent pulse response)
? Peak sync AGC for negative modulation
? Video amplifier to match sound trap and sound filter
? AGC output voltage for tuner; adjustable take-over point (TOP)
? AFC detector without extra reference circuit
? Alignment-free FM-PLL detector with high linearity
? Stabilizer circuit for ripple rejection and to achieve
?? constant output signals
? 5 to 8 V positive supply voltage range, low power
?? consumption (300 mW at +5 V supply voltage).