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
V
P1
analog supply voltage (pin 9) 4.5 5 6 V
V
P2
digital supply voltage (pin 1) 4.5 5 6 V
I
P(tot)
total supply current − 5.5 7.0 mA
V
i(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
G
v
gain Vo/Vi of colour-difference output signals
V
11/V16
for PAL and NTSC 5.3 5.8 6.3 dB
V
12/V14
for PAL and NTSC 5.3 5.8 6.3 dB
V
11/V16
for SECAM −0.6 −0.1 +0.4 dB
V
12/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