Ordering number : EN
*
5391
41596HA (OT) No. 5391-1/7
Overview
The LC89975M is a lower-cost PAL-Format CCD delay
line based on the LC89970M, with the sizes of chip and
package miniaturized and the external parts count reduced.
Features
5 V single-voltage power supply
On-chip 3
PLL circuit for 3fsc operation from an fsc
(4.43 MHz) input
Supports PAL/GBI and 4.43 NTSC systems, selected by
a control pin input
Includes an on-chip comb filter for chrominance signal
crosstalk exclusion. This adjustment-free circuit
provides high-precision comb characteristics.
Peripheral circuits included on chip to allow operation
with minimal external circuits.
Positive-phase signal input, positive phase signal output
(luminance signal)
Functions
CCD shift register (for chrominance and luminance
signals)
CCD drive circuit
Circuit for switching the number of CCD stages
CCD signal addition circuit
Auto-bias circuit
Sync tip clamping circuit (luminance signal)
Center bias circuit (chrominance signal)
Sample-and-hold circuit
PLL 3
circuit
3fsc clock output circuit
RD voltage generation step-up circuit
Package Dimensions
unit: mm
3111-MFP14S
Preliminary
SANYO: MFP14S
[LC89975M]
LC89975M
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-0005 JAPAN
PAL-Format Delay Line
NMOS + CCD
Specifications
Absolute Maximum Ratings
at Ta = 25C
Recommended Conditions
at Ta = 25C
Parameter
Symbol
Conditions
Ratings
Unit
Supply voltage
V
DD
0.3 to +6.0
V
Allowable power dissipation
Pdmax
250
mW
Operating temperature
Topr
10 to +60
C
Storage temperature
Tstg
55 to +150
C
Parameter
Symbol
Conditions
min
typ
max
Unit
Supply voltage
V
DD
4.75
5.00
5.25
V
Clock input amplitude
V
CLK
300
500
1000
mVp-p
Clock frequency
F
CLK
Sine wave
--
4.43361875
--
MHz
Chrominance signal input amplitude
V
IN-C
--
350
500
mVp-p
Luminance signal input amplitude
V
IN-Y
--
400
572
mVp-p
Control Pin
Switching levels
Note: Since a pull-down resistor of about 70 k
is built in the control pin circuit, it will remain fixed at the low level if
left open.
3fsc Pin
This pin outputs the 3fsc clock signal generated by the PLL 3
circuit.
Electrical Characteristics
at V
DD
= 5.0 V, Ta = 25C, F
CLK
= 4.43361875 MHz, V
CLK
= 500 mVp-p
No. 5391-3/7
LC89975M
CONT
Mode
Chrominance signal delay
Luminance signal delay
(typical example)
(number of CCD stages)
(number of CCD stages)
Low
PAL/GBI
2H (1705) + 0H (2.5)
1H (849)
High
4.43 NTSC
1H (847) + 0H (2.5)
1H (843)
Low/High
Symbol
min
typ
max
Unit
Low
V
L
0.3
0.0
+0.5
V
High
V
H
2.0
5.0
6.0
V
Parameter
Symbol
Test conditions
Switch states
min
typ
max
Unit
SW1
SW2
SW3
Power-supply current
I
DD-1
1
a
a
b
27
32
37
mA
I
DD-2
b
a
b
Test Conditions
1. Power-supply current with no input signal applied
2. Pin output voltage with no input signal applied (center bias voltage)
3. Measure the C-OUT output when 350-mVp-p sine wave signals are input to C-IN1 and C-IN2.
G
VC
= 20 log
[dB]
Measured frequencies
G
VC-1
4.429662 MHz
(PAL/GBI)
G
VC-2
4.425694 MHz
(4.43 NTSC)
4. Measure the comb depth from the C-OUT output when 350-mVp-p sine wave signals of frequency fa are input to C-
IN1 and C-IN2 and when signals of frequency fb are input.
C
D
= 20 log
[dB]
Measured frequencies
fa
fb
C
D-1
4.429662 MHz
4.425756 MHz
(PAL/GBI)
C
D-2
4.425694 MHz
4.417819 MHz
(4.43 NTSC)
5. Measure the C-OUT output when 200-mVp-p sine wave signals are input to C-IN1 and C-IN2 and when 500-mVp-p
sine wave signals are input and calculate the gain difference.
L
NC
= 20 log
(
/
)
[dB]
Measured frequencies
L
NC-1
4.429662 MHz
(PAL/GBI)
L
NC-2
4.425694 MHz
(4.43 NTSC)
6. Measure the 3fsc (13.3 MHz) and fsc (4.43 MHz) components in the C-OUT output with no input signal applied.
7. Measure the noise in the C-OUT output with no input signal applied.
Set up the noise meter with a 200-kHz high-pass filter and a 5-MHz low-pass filter.
8. Let V1 be the C-OUT output when 350-mVp-p sine wave signals are input to C-IN1 and C-IN2 with SW3 in the a
position, and V2 be the C-OUT output with SW3 in the b position.
Z
OC
=
500 [
]
Measured frequencies
Z
OC-1
4.429662 MHz
(PAL/GBI)
Z
OC-2
4.425694 MHz
(4.43 NTSC)
V2 [mVp-p] V1 [mVp-p]
V1 [mVp-p]
Output for a 200-mVp-p input [mVp-p]
200 [mVp-p]
Output for a 500-mVp-p input [mVp-p]
500 [mVp-p]
The C-OUT output for an fb input [mVp-p]
The C-OUT output for an fa input [mVp-p]
C-OUT output [mVp-p]
350 [mVp-p]
No. 5391-5/7
LC89975M
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