ILA4661 Datasheet, PDF (1/2 Pages) Integral Corp. – BASEBAND DELAY LINE

ILA4661
BASEBAND DELAY LINE
GENERAL DESCRIPTION
The ILA4661 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
µS)
• 3 MHz internal clock signal derived from a 6 MHz CCO, line-locked by the sandcastle
pulse (64 µS 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 U_O/U_I), dB
Delay of delayed signals, µS
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
U_n/U_n+1
Gv
t_d
t_dn
t_tr
t_trn
Un
S/N(w)
Type U_VCC=5.0 V
Min.
Type
Max
-
-
6.0
-
-
1.0
1.3
-
1.7
2.5
-
3.3
-
1.05
-
-
1.33
-
-0.4
-
0.4
-0.1
-
0.1
5.3
-0.6
63.94
40
-
-
-
-
-
6.3
-
0.4
-
64.06
-
80
350
-
320
-
-
1.2
54
-
1