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2 / 12 page 1996 Dec 17 2 Philips Semiconductors Product specification Baseband delay line TDA4665 FEATURES • Two comb filters, using the switched-capacitor technique, for one line delay time (64 µs) • Adjustment-free application • No crosstalk between SECAM colour carriers (diaphoty) • Handles negative or positive colour-difference input signals • Clamping of AC-coupled input signals (±(R−Y) and ±(B−Y)) • VCO without external components • 3 MHz internal clock signal derived from a 6 MHz CCO, line-locked by the sandcastle pulse (64 µs line) • Sample-and-hold circuits and low-pass filters to suppress the 3 MHz clock signal • Addition of delayed and non-delayed output signals • Output buffer amplifiers • Comb filtering functions for NTSC colour-difference signals to suppress cross-colour. GENERAL DESCRIPTION The TDA4665 is an integrated baseband delay line circuit with one line delay. It is suitable for decoders with colour-difference signal outputs ±(R−Y) and ±(B−Y). QUICK REFERENCE DATA ORDERING INFORMATION SYMBOL PARAMETER MIN. TYP. MAX. UNIT VP1 analog supply voltage (pin 9) 4.5 5 6 V VP2 digital supply voltage (pin 1) 4.5 5 6 V IP(tot) total supply current − 5.5 7.0 mA Vi(p-p) ±(R−Y) input signal PAL/NTSC (peak-to-peak value; pin 16) − 525 − mV ±(B−Y) input signal PAL/NTSC (peak-to-peak value; pin 14) − 665 − mV ±(R−Y) input signal SECAM (peak-to-peak value; pin 16) − 1.05 − V ±(B−Y) input signal SECAM (peak-to-peak value; pin 14) − 1.33 − V Gv gain Vo /Vi of colour-difference output signals V11 /V16 for PAL and NTSC 5.3 5.8 6.3 dB V12 /V14 for PAL and NTSC 5.3 5.8 6.3 dB V11 /V16 for SECAM −0.6 −0.1 +0.4 dB V12 /V14 for SECAM −0.6 −0.1 +0.4 dB TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION TDA4665 DIP16 plastic dual in-line package; 16 leads (300 mil) SOT38-4 TDA4665T SO16 plastic small outline package; 16 leads; body width 3.9 mm SOT109-1 |
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