TDA4661 Datasheet, PDF (1/6 Pages) NXP Semiconductors – Baseband delay line

Philips Semiconductors
Baseband delay line
Product specification
TDA4661
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 TDA4661 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
SYMBOL
V_P1
V_P2
I_P(tot)
V_I
G_v
PARAMETER
MIN.
analog supply voltage (pin 9)
4.5
digital supply voltage (pin 1)
4.5
total supply current
−
±(R−Y) input signal PAL/NTSC (peak-to-peak value; pin 16) −
±(B−Y) input signal PAL/NTSC (peak-to-peak value; pin 14) −
±(R−Y) input signal SECAM (peak-to-peak value; pin 16) −
±(B−Y) input signal SECAM (peak-to-peak value; pin 14) −
gain V_O / V_I of colour-difference output signals
V₁₁ / V₁₆ for PAL and NTSC
V₁₂ / V₁₄ for PAL and NTSC
V₁₁ / V₁₆ for SECAM
V₁₂ / V₁₄ for SECAM
5.3
5.3
−0.6
−0.6
TYP.
5
5
4.9
525
665
1.05
1.33
5.8
5.8
−0.1
−0.1
MAX.
6
6
7.0
−
−
−
−
UNIT
V
V
mA
mV
mV
V
V
6.3
dB
6.3
dB
+0.4
dB
+0.4
dB
ORDERING INFORMATION
TYPE
NUMBER
TDA4661
TDA4661T
NAME
DIP16
SO16
PACKAGE
DESCRIPTION
plastic dual in-line package; 16 leads (300 mil) long body
plastic small outline package; 16 leads; body width 3.9 mm
VERSION
SOT38-4
SOT109-1
December 1994
2