AmplifierCircuits

FEATURES: • 5 V supply voltage • Gain controlled wide-band Vision Intermediate  Frequency (VIF) amplifier, AC-coupled • Multistandard true synchronous demodulation with  active carrier regeneration: very linear demodulation,  good intermodulation figures, reduced harmonics, and  excellent pulse response • Gated phase detector for L and L-accent standard • Fully integrated VIF Voltage Controlled Oscillator  (VCO), alignment-free, frequencies switchable for all  negative and positive modulated standards via I2C-bus • Digital acquisition help, VIF frequencies of 33.4, 33.9,  38.0, 38.9, 45.75, and 58.75 MHz • 4 MHz reference frequency input: signal from  Phase-Locked Loop (PLL) tuning system or operating  as crystal oscillator • VIF Automatic Gain Control (AGC) detector for gain  control, operating as peak sync detector for negative  modulated signals and as a peak white detector for  positive modulated signals ...