TDA4665 - NXP

TDA4665 Baseband delay line

plastic dual in-line package; 16 leads (300 mil) plastic small outline package; 16 leads; body width 3.9 mm 5.3 5.3 −0.6 −0.6 5.8 5.8 −0.1 −0.1 MIN. 4.5 4.5 − − − − − 5 5 5.5 525 665 1.05 1.33 TYP. 6 6 GENERAL DESCRIPTION TDA4665 The TDA4665 is an integrated baseband delay line circuit with one line delay. It is suitable for decoders with colour-difference.

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 amplifier.