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TDA4661T Datasheet

  • TDA4661T

  • Baseband delay line

  • 6頁

  • PHILIPS

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Philips Semiconductors
Product speci鏗乧ation
Baseband delay line
FEATURES
鈥?/div>
Two comb filters, using the switched-capacitor
technique, for one line delay time (64
碌s)
鈥?/div>
Adjustment-free application
鈥?/div>
No crosstalk between SECAM colour carriers (diaphoty)
鈥?/div>
Handles negative or positive colour-difference input
signals
鈥?/div>
Clamping of AC-coupled input signals (鹵(R鈭扽) and
鹵(B鈭扽))
鈥?/div>
VCO without external components
鈥?/div>
3 MHz internal clock signal derived from a 6 MHz CCO,
line-locked by the sandcastle pulse (64
碌s
line)
鈥?/div>
Sample-and-hold circuits and low-pass filters to
suppress the 3 MHz clock signal
鈥?/div>
Addition of delayed and non-delayed output signals
鈥?/div>
Output buffer amplifiers
鈥?/div>
Comb filtering functions for NTSC colour-difference
signals to suppress cross-colour.
QUICK REFERENCE DATA
SYMBOL
V
P1
V
P2
I
P(tot)
V
I
PARAMETER
analog supply voltage (pin 9)
digital supply voltage (pin 1)
total supply current
MIN.
4.5
4.5
鈭?/div>
5
5
4.9
525
665
1.05
1.33
5.8
5.8
鈭?.1
鈭?.1
TYP.
6
6
GENERAL DESCRIPTION
TDA4661
The TDA4661 is an integrated baseband delay line circuit
with one line delay. It is suitable for decoders with
colour-difference signal outputs
鹵(R鈭扽)
and
鹵(B鈭扽).
MAX.
V
V
UNIT
7.0
鈭?/div>
鈭?/div>
鈭?/div>
鈭?/div>
6.3
6.3
+0.4
+0.4
mA
mV
mV
V
V
dB
dB
dB
dB
鹵(R鈭扽)
input signal PAL/NTSC (peak-to-peak value; pin 16)
鈭?/div>
鹵(B鈭扽)
input signal PAL/NTSC (peak-to-peak value; pin 14)
鈭?/div>
鹵(R鈭扽)
input signal SECAM (peak-to-peak value; pin 16)
鹵(B鈭扽)
input signal SECAM (peak-to-peak value; pin 14)
鈭?/div>
鈭?/div>
5.3
5.3
鈭?.6
鈭?.6
G
v
gain V
O
/ V
I
of colour-difference output signals
V
11
/ V
16
for PAL and NTSC
V
12
/ V
14
for PAL and NTSC
V
11
/ V
16
for SECAM
V
12
/ V
14
for SECAM
ORDERING INFORMATION
TYPE
NUMBER
TDA4661
TDA4661T
PACKAGE
NAME
DIP16
SO16
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

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