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CCD Delay Line Series
MN3814, MN3814S
NTSC CCD Video Signal Delay Elements
Overview
The MN3814 and MN3814S are 4 fSC CMOS CCD signal
delay elements whose wide bandwidth and low noise make
them ideal for video signal processing applications.
They contain such components as a shift register clock
driver, 906-stage CCD analog shift register, and resampling
output amplifier.
They sample the input using the supplied clock signal with
a frequency of 14.32 MHz, four times the NTSC color signal
subcarrier frequency, and after adding in the attached filter
delay, produce independent delays of 1 H (the horizontal scan
period).
Features
High-precision 1 H delay for video signal
CMOS process for low power consumption
Low EMI levels from clock during driving
Low clock leakage, which allows use of simpler filters
Applications
1 H delays of NTSC video signals, especially for:
Comb filters
Signal-to-noise ratio improvement
Dropout compensation
Pin Assignment
MN3814
BB
XI
O
V
N.C.
N.C.
BIAS
N.C.
N.C.
N.C.
BB
X1
V
1
2
3
4
O
V
V
BIAS
V
MN3814S
V
(TOP VIEW)
DIP008-P-300
1
2
3
4
5
6
7
8
9
8
V
DD1
7
V
SS
6
18
17
16
15
14
13
12
11
10
V
DD2
5
V
IN
N.C.
N.C.
V
DD1
V
SS
V
DD2
V
IN
N.C.
N.C.
N.C.
(TOP VIEW)
SOP018-P-0300
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MN3814, MN3814S CCD Delay Line Series
Block Diagram
DD1
V
(16) 8
DD2
V
(14) 6
V
(5) 3
BIAS
Bias circuit
5 (13)
V
IN
906-stage CCD analog shift
register
Resampling
output
amplifier
(6) 4
V
O
øS ø1 ø2 øR øSH
Clock driver
Substrate bias
generator
1 (1)
BB
V
Timing adjustment
Waveform
adjustment
7 (15)
SS
V
(4) 2
XI
The numbers in parentheses are the pin numbers for the MN3814S.
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CCD Delay Line Series MN3814, MN3814S
Pin Descriptions
MN3814
Pin No. Symbol Pin Name
1VBBSubstrate connection
2 XI 14.32 MHz clock input
3V
BIAS
4VOSignal output
5VINSignal input
6V
DD2
7VSSGround
8V
DD1
MN3814S
Pin No. Symbol Pin Name
1VBBSubstrate connection
2 N.C. No connection
3 N.C. No connection
4 XI 14.32 MHz clock input
5V
BIAS
6VOSignal output
7 N.C. No connection
8 N.C. No connection
9 N.C. No connection
10 N.C. No connection
11 N.C. No connection
12 N.C. No connection
13 V
14 V
15 V
16 V
IN
DD2
SS
DD1
17 N.C. No connection
18 N.C. No connection
Output amplifier control
9 volt power supply
5 volt power supply
Output amplifier control
Signal input
9 volt power supply
Ground
5 volt power supply
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MN3814, MN3814S CCD Delay Line Series
Electrical Characteristics
V
=5.0V, V
DD1
Power supply current (1) I
Power supply current (2) I
Signal bandwidth B
Insertion gain IG f
Total harmonic distortion THD f
Signal-to-noise ratio S/N Signal output (Vp-p)/noise output 50 56 dB
Clock leakage NC Clock fundamental component –30 –15 dB
Delay time τ
VO pin output impedance Z
=9.0V , Vck=0.3V
DD2
(sine wave), Vin=0.5V
P-P
, fck=14.31818MHz, Ta=25˚C
P-P
Parameter Symbol Measurement Conditions min typ max Unit
DD1
Average current for 5 volt power 26 50 mA
supply
DD2
Average current for 9 volt power 10 25 mA
supply
–3 dB for 200 kHz value 4.0 5.5 MHz
W
=200kHz 4 7 10 dB
sig
=200kHz 1 3 %
sig
(rms)
output
D
O
63.33 µs
250 500 Ω
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CCD Delay Line Series MN3814, MN3814S
Package Dimensions (Unit:mm)
MN3814 DIP008-P-0300
9.6±0.4
85
6.4±0.2
14
3.3±0.2
4.8max.
0.7min.
3.45±0.30
2.54
0.5±0.1
1.3±0.1
0 to 15°
SEATING PLANE
7.62±0.20
0.25
+0.20
0.05
-
MN3814 SOP018-P-0300
18
19
(1.22) 0.40
12.60
1.27
±0.20
10
±0.10
SEATING PLANE
+0.18
0.10
±0.20
5.50
±0.20
1.50
0.10
-
±0.30
1.90max. 7.70
+0.10
0.05
-
0.15
1.10
±0.20
0 to 10°
0.30min.
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