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KKA4661 Datasheet

  • KKA4661

  • BASEBAND DELAY LINE

  • 3頁(yè)

  • KODENSHI

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TECHNICAL DATA
B
ASEBAND DELAY LINE
GENERAL DESCRIPTION
The
KKA4661
is an integrated baseband delay line circuit with one line delay. It is
suitable for decoders with colour-difference signal outputs
鹵
(R-Y) and
鹵
(B-Y).
Device is functionally identical to the TDA4661 Philips.
FEATURES
鈥?/div>
Two comb filters, using the switched-capacitor technique, for one line delay time (64
碌S)
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>
Comb filtering functions for NTSC colour-difference signals to suppress cross-colour
鈥?/div>
Clamping of AC-coupled input signals
鹵
(R-Y) and
鹵
(B-Y)
QUICK REFERENCE DATA
Parameter
Analogy supply current, mA
Digital supply current, mA
Input fixing voltage (on pins 14 and 16), V
Output voltage (on pins 11 and 12), V
Output signal (peak-to peak value)
鹵
(R-Y) on pin 11
鹵
(B-Y) on pin 12
Ratio of output amplitudes at equal input signals
(U
14
=U
16
=1.33V), dB
Ratio of output signals on pins 11 and 12 for
adjacent time samples at constant input signals
(U
14
=U
16
=1.33V), dB
Gain for PAL and NTSC
Gain for SECAM
(ratio U
O
/U
I
), dB
Delay of delayed signals,
碌S
Delay of non-delayed signals, nS
Transient time of delayed signal on pins 11
respectively 12, nS
Transient time of non-delayed signal on pins 11
respectively 12, nS
Noise voltage (RMS value; pins 11 and 12), mV
Weighted signal-to-noise ratio, dB
Symbol
Ip1
Ip2
U
14
,
16
U
11
,
12
U
011
U
012
U
11
/U
12
U
n
/U
n+1
Type U
VCC
=5.0 V
Min.
Type
-
-
-
-
1.3
-
2.5
-
-
-
-0.4
-0.1
1.05
1.33
-
-
Max
6.0
1.0
1.7
3.3
-
-
0.4
0.1
Gv
t
d
t
dn
t
tr
t
trn
Un
S/N(w)
5.3
-0.6
63.94
40
-
-
-
-
-
-
-
-
350
320
-
54
6.3
0.4
64.06
80
-
-
1.2
-
1

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