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catalogs, data books, etc. Contact SHARP in order to obtain the latest device specification sheets before using any SHARP device.
1
DESCRIPTION
The LR36685 is a CMOS vertical clock driver and
shutter driver IC for CCD area sensors which
provides the functions to convert the voltage and
impedance from the CMOS level.
FEATURES
• Built-in seven circuits
– 2-level output :
2 circuits for vertical CCD clock driver
Output voltage level (TYP.) = –9 to 0 V
– 3-level output :
4 circuits for vertical CCD clock driver
Output voltage level (TYP.) = –9 to 0 to +15 V
– 2-level output :
1 circuit for shutter driver
Output voltage level (TYP.) = –9 to +17 V
• Switchable between NTSC (EIA) and PAL (CCIR)
modes
• Package :
24-pin SSOP (SSOP024-P-0275)
PIN CONNECTIONS
LR36685
LR36685
Vertical Driver IC for
CCD Area Sensors
POFD
VH
1BX
1
24
23
22
21
20
19
18
17
16
15
14
13
VMb
V4X
2
VL
VH3AX
3
V2
GND
4
V4
VDD
5
NC
V
3X
6
V3B
VH1AX
7
V3A
V1X
8
V1B
V2X
9
V1A
OFDX
10
VMa
VH3BX
11
VH
VOFDH
12
24-PIN SSOP
TOP VIEW
(SSOP024-P-0275)
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LR36685
2
BLOCK DIAGRAM
VOFDH
VH3BX
OFDX
V
2X
V1X
VH1AX
V3X
VDD
GND
VH
3AX
V4X
VH1BX
POFD
V
Mb
VL
V2
V4
NC
V
3B
V3A
V1B
V1A
VMa
VH
MIX
MIX
MIX
MIX
24
23
22
21
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
9
10
11
12
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LR36685
3
PIN DESCRIPTION
16 GND Ground A grounding pin.
PIN NO.
SYMBOL PIN NAME DESCRIPTION
1 POFD OFD pulse output
An electronic shutter pulse output.
(high level = V
OFDH, low level = VL)
2VMb Power supply A power supply for high level of V2 and V4.
3V
L Power supply A power supply for low level of all output pulses.
4V
2
Vertical transfer
pulse output 2
A pulse to drive vertical CCD shift register.
Connect to Ø
V2.
5V
4
Vertical transfer
pulse output 4
A pulse to drive vertical CCD shift register.
Connect to Ø
V4.
6 NC No connection No connection
A pulse to drive vertical CCD shift register.
Connect to Ø
V3B.
Vertical transfer
pulse output 3B
V
3B7
9V
1B
Vertical transfer
pulse output 1B
A pulse to drive vertical CCD shift register.
Connect to ØV1B.
8V
3A
Vertical transfer
pulse output 3A
A pulse to drive vertical CCD shift register.
Connect to Ø
V3A.
A pulse to drive vertical CCD shift register.
Connect to Ø
V1A.
Vertical transfer
pulse output 1A
V
1A10
11 V
Ma Power supply
A power supply for intermediate level of V
1A, V1B, V3A
and V3B.
A power supply for high level of V1A, V1B, V3A and V3B.Power supplyVH12
13 VH
1BX
Readout pulse input1BA pulse that transfers the charge of the photo-diode to
the vertical shift register.
A vertical transfer pulse input.
Vertical transfer
pulse input 4
V
4X14
15 VH
3AX
Readout pulse input3AA pulse that transfers the charge of the photo-diode to
the vertical shift register.
A vertical transfer pulse input.
Vertical transfer
pulse input 3
V
3X18
A power supply for input pulses.Power supplyV
DD17
19 VH
1AX
Readout pulse input1AA pulse that transfers the charge of the photo-diode to
the vertical shift register.
A vertical transfer pulse input.
Vertical transfer
pulse input 1
V
1X20
22 OFDX OFD pulse input An electronic shutter pulse input.
21 V
2X
Vertical transfer
pulse input 2
A vertical transfer pulse input.
A pulse that transfers the charge of the photo-diode to
the vertical shift register.
Readout pulse input
3B
VH
3BX23
24 V
OFDH Power supply A power supply for high level of POFD.
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LR36685
4
ABSOLUTE MAXIMUM RATINGS (TA = +25 ˚C)
RECOMMENDED OPERATING CONDITIONS
PARAMETER SYMBOL RATING UNIT
Supply voltage
V
DD GND – 0.3 to GND + 6.0 V
V
H – VL 29.0 V
VMa, VMb VL to VH V
V
OFDH
– V
L
34.0 V
Input voltage VIN GND – 0.3 to VDD + 0.3 V
Storage temperature T
STG –55 to +150 ˚C
1
NOTE
NOTE :
1. VH (MIN.) = VDD, VOFDH (MIN.) = VDD, VL (MAX.) = GND
PARAMETER SYMBOL MIN. TYP.
Supply voltage
V
DD 3.0 3.3
V
H – VL 17.0 24.0
V
H 12.0 15.0
VL –10.0 –9.0
V
Ma, VMb 0.0
V
OFDH
– VL17.0 26.0 V
V
V
V
V
V
UNIT
32.0
–5.0
20.0
27.0
5.5
MAX.
+70 ˚C–20T
OPROperating temperature
kHz15.625PAL
kHz15.734NTSC
Operating frequency
0.25V
DD
V0VIN (Low)
Input voltage
24.0 V17.012.0V
OFDH
VIN (High) 0.8VDD V
VDD+ 0.2
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LR36685
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ELECTRICAL CHARACTERISTICS
DC Characteristics
(VDD = +3.3 V, VH = +15.0 V, VL = –9.0 V, VMa = VMb = 0 V, VOFDH = +17.0 V, TA = +25 ˚C)
Input "Low" voltage VIL
Input "High" voltage VIH
Input "Low" current |IIL|
|IIH|
Output "Low" voltage V
OL
Output "High" voltage VOH
Output "Intermediate" voltage
V
OMLa
VOMHa
VOMLb
VOMHb
Output "Low" current |IOL|
Output "High" current |I
OH|
Output "High" current |IOFDH|
Output "Intermediate" current
|I
OMLa|
|I
OMHa|
|IOMLb|
|I
OMHb|
RONH
RONOFH
RONM
RONL
|IDD|
PARAMETER SYMBOL CONDITIONS
Input "High" current
V
OFDHOutput "High" voltage
MIN.
0.8V
DD
0.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
–0.1
–0.1
–0.1
–0.1
16.9
14.9
20
25
20
TYP.30MAX.
1.0
200
VDD+ 0.2
0.25V
DD
0.1
0.1
0.1
0.1
–8.9
2.0
I
OL < 1 µA
V
IH = 3.3 V
VIL = 0 V
I
OFDH = 20 mA
I
OH = 20 mA
VOMHb = VM + 0.1 V
V
OMLb = VM – 0.1 V
VOMHa = VM + 0.1 V
V
OMLa = VM – 0.1 V
V
OFDH = VOFDH – 0.1 V
VOH = VH – 0.1 V
V
OL = VL + 0.1 V
IOMHb < 1 µA
I
OMLb < 1 µA
I
OMHa < 1 µA
IOMLa < 1 µA
I
OFDH < 1 µA
IOH < 1 µA
I
OL = 20 mA
IOM = 20 mA $
$
mA
V
V
V
V
V
V
V
mA
mA
mA
mA
mA
mA
V
V
µA
µA
$
UNIT
$3
NOTE
3
1, 2, 3
1
2
1, 2, 3
1, 2, 3
µA
µA200
200|I
L|
|I
M|
µA
µA200
200|IOFDH|
|I
H|
2
3
Static current
Output ON resistance
mA
2
2
1
2
1, 2
NOTES :
1. Applied to outputs (V2, V4).
2. Applied to outputs (V
1A, V1B, V3A, V3B).
3. Applied to output (POFD).
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LR36685
6
AC Characteristics
(VDD = +3.3 V, VH = +15.0 V, VL = –9.0 V, VMa = VMb = 0 V, VOFDH = +17.0 V, TA = +25 ˚C,
Shutter speed : 1/100 000 s)
PARAMETER SYMBOL CONDITIONS TYP.
Sequential delay
t
TRM
(VL/VM)
V
IN to VM – 1.0 V
(V1A, V1B, V2, V3A, V3B, V4)
600 ns
UNIT
1 200
MAX.
Dynamic current
t
TFOFDL
(V
OFDH/VL
)
tTROFDH
(VL/V
OFDH
)
tTFM
(VH/VM)
t
TRH
(VM/VH)
t
TFL
(VM/VL)
160 ns80
V
IN to VL + 1.0 V
(POFD)
160 ns80
V
IN to VOFDH – 1.0 V
(POFD)
1 600 ns800
V
IN to VM + 1.0 V
(V1A, V1B, V3A, V3B)
1 600 ns800
V
IN to VH – 1.0 V
(V
1A, V1B, V3A, V3B)
1 200 ns600
V
IN to VL + 1.0 V
(V1A, V1B, V2, V3A, V3B, V4)
During operation 5 mA10IDYN
NOTE :
Refer to "Switching Characteristics Conditions" and "Equivalent Circuit".
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LR36685
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Switching Characteristics Conditions
Equivalent Circuit
(While V1A and V3A [or V1B and V3B] are measured, V1B and V3B
[or V1A and V3A] are open.)
tTRH tTFM
tTFL
tTRM
VM – 1.0
V
H – 1.0
V
M + 1.0
V
L + 1.0
V
L + 1.0
tTROFDH tTFOFDL
VDD (3.3 V)
GND (0.0 V)
V
DD (3.3 V)
V
1X, V2X
V3X, V4X
VH1AX, VH1BX
VH3AX, VH3BX
V1A, V1B
V3A, V3B
V2, V4
OFDX
POFD
GND (0.0 V)
V
H (15.0 V)
VMa (0.0 V)
V
L (–9.0 V)
V
Mb (0.0 V)
V
L (–9.0 V)
V
DD (3.3 V)
GND (0.0 V)
V
OFDH (17.0 V)
V
L (–9.0 V)
VOFDH – 1.0
C41
C23
C12
C1 C2 C3 C4
C34
R1
R2
R4
R3
V1A
(or V1B)
V
2
V4
V3A
(or V3B)
POFD
CSUB
CSUB = 500 pF
RG
R
1 to R4 = 51 $
RG = 10 $
C
1 to C4 = 3 300 pF
C
12, C23, C34, C41 = 1 000 pF
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PACKAGES FOR CCD AND CMOS DEVICES
8
1.05
±0.1
0.1
±0.1
0.45
6.0
±0.2
7.8
±0.2
0.65
TYP.
0.27
±0.1
0.15
±0.05
12
13
1
24
7.6
±0.4
(6.6)
0.15
0.15
0.15
M
Package base plane
24 SSOP (SSOP024-P-0275)
PACKAGE (Unit : mm)
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