NXP Semiconductors TDA8417
The TDA8417 is a processor of stereo/dual language signals (B/G-standard) for stereo sound television receivers and VTRs, using the switched-capacitor technique. The AF signals at the TDA8417 inputs must be “(L+R)/2” or “language A” on one channel and “R” or “language B” on the second channel (where L = left and R = right). The carrier frequency of the second channel is also modulated by an identification signal (stereo or dual sound).GENERAL DESCRIPTION
The device is controlled by a microcomputer via the two-line, bidirectional I2C-bus.FEATURES
● Use of the switched-capacitor technique for signal processing● Small amount of peripheral components
● Integrated anti-aliasing filters
● Low distortion AF signal handling
● Integrated de-emphasis with a time constant of 50 µs
● Two general purpose output ports
● Full ESD protection QUICK REFERENCE DATA PARAMETER Supply voltage (pin 15) Supply current (pin 15) AF output signal (RMS value) (pins 11 to 14) Weighted signal-to-noise ratio of the AF output signals (CCIR 468/3) Crosstalk attenuation stereo mode at dual sound mode at Pilot signal input sensitivity Total harmonic distortion PACKAGE OUTLINE 20-lead DIL; plastic (SOT146); SOT146-1; 1996 November 18 f = 1 kHz f = 40 Hz to 12.5 kHz αS αDS Vi THD 40 70 − − − − 2.5 0.1 − − − − dB dB mV % (S+W)/W 70 − − dB Vo − 2 − V CONDITION SYMBOL VP IP − − MIN. TYP. 12 10 − − MAX. V mA UNIT September 1989 2 Philips Semiconductors P...