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

analog supply voltage (pin 9)

4.5

5

6

V

digital supply voltage (pin 1)

4.5

5

6

V

total supply current

−

5.5

7.0

mA

±(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

5.3

5.8

6.3

dB

5.3

5.8

6.3

dB

−0.6

−0.1

+0.4

dB

−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