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TECHNICAL DATA
BASEBAND 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 (R-Y) and (B-Y). Device is functionally identical to the TDA4661 Philips. FEATURES * Two comb filters, using the switched-capacitor technique, for one line delay time (64 S) * 3 MHz internal clock signal derived from a 6 MHz CCO, line-locked by the sandcastle pulse (64 S line) * Comb filtering functions for NTSC colour-difference signals to suppress cross-colour * Clamping of AC-coupled input signals (R-Y) and (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) (R-Y) on pin 11 (B-Y) on pin 12 Ratio of output amplitudes at equal input signals (U14=U16=1.33V), dB Ratio of output signals on pins 11 and 12 for adjacent time samples at constant input signals (U14=U16=1.33V), dB Gain for PAL and NTSC Gain for SECAM (ratio UO/UI), dB Delay of delayed signals, 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 U14,16 U11,12 U011 U012 U11/U12 Un/Un+1 Min. 1.3 2.5 -0.4 -0.1 Type UVCC=5.0 V Type 1.05 1.33 Max 6.0 1.0 1.7 3.3 0.4 0.1
Gv td tdn ttr ttrn Un S/N(w)
5.3 -0.6 63.94 40 -
350 320 54
6.3 0.4 64.06 80 1.2 -
1
KKA4661
PIN CONFIGURATION
16
UI(R-Y)
15
n.c.
14
UI(B-Y)
13
n.c.
12
11
10
GND1
9
UP1
UO(B-Y) UO(R-Y)
KKA4661
UP2 n.c. GND2 i.c. SAND n.c. i.c. i.c.
1
2
3
4
5
6
7
8
BLOCK DIAGRAM
1 3 (R-Y) 16 SIGNAL CLAMPING LINE MEMORY SAMPLEANDHOLD
Vp2 GND2 (R-Y)
+
LP 11
addition stages output stages
pre-amplifiers SAMPLEANDHOLD
(B-Y)
14
SIGNAL CLAMPING
LINE MEMORY
LP
+
12 (B-Y)
7 13 2 sandcastle pulse input 5 SANDCASTLE DETECTOR FREQUENCY PHASE DETECTOR DIVIDER BY 192 3 MHz 6 15
i.c. n.c. n.c. n.c. n.c.
LP 9 Vp 10 GND1
CCO
6 MHz
DIVIDER BY 2 4 8
Test
Test
2
KKA4661
N SUFFIX PLASTIC DIP (MS - 001BB)
A
Dimension, mm
16 9 B
Symbol A
MIN 18.67 6.1
MAX 19.69 7.11 5.33
1
8
B C
F L
D F
0.36 1.14 2.54 7.62 0 2.92 7.62 0.2 0.38
0.56 1.78
C -T- SEATING
PLANE
G H
H J
N G D 0.25 (0.010) M T K M
J K L M N
10 3.81 8.26 0.36
NOTES: 1. Dimensions "A", "B" do not include mold flash or protrusions. Maximum mold flash or protrusions 0.25 mm (0.010) per side.
3

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