Sony ICX248AL Datasheet

Description

The ICX248AL is an interline CCD solid-state
image sensor suitable for EIA black-and-white video
cameras with a diagonal 8mm (Type 1/2) system.
Sensitivity, smear, D-range, S/N and other
characteristics from visible light area to near infrared
light area, have been greatly improved compared
with the ICX038DLA through the adoption of EXview
HAD CCDTMtechnology.

This chip features a field period readout system and
an electronic shutter with variable charge-storage time.

This chip is compatible with and can replace the
ICX038DLA.

Features

• Sensitivity in the near infrared light area

(+12dB compared with the ICX038DLA, λ = 945nm)

• High sensitivity

(+9dB compared with the ICX038DLA, without IR cut filter)

• Low smear (–15dB compared with the ICX038DLA)

• High D range (+2dB compared with the ICX038DLA)

• High S/N

• High resolution and low dark current

• Excellent antiblooming characteristics

• Continuous variable-speed shutter

• Substrate bias: Adjustment free (external adjustment also possible with 6 to 14V)

• Reset gate pulse: 5Vp-p adjustment free (drive also possible with 0 to 9V)

• Horizontal register: 5V drive

Device Structure

• Interline CCD image sensor

• Image size: Diagonal 8mm (Type 1/2)

• Number of effective pixels: 768 (H) × 494 (V) approx. 380K pixels

• Total number of pixels: 811 (H) × 508 (V) approx. 410K pixels

• Chip size: 7.95mm (H) × 6.45mm (V)

• Unit cell size: 8.4µm (H) × 9.8µm (V)

• Optical black: Horizontal (H) direction: Front 3 pixels, rear 40 pixels

Vertical (V) direction: Front 12 pixels, rear 2 pixels

• Number of dummy bits: Horizontal 22

Vertical 1 (even fields only)

• Substrate material: Silicon

– 1 –

ICX248AL

E98728A99

Diagonal 8mm (Type 1/2) CCD Image Sensor for EIA Black-and-White Video Cameras

Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.

20 pin DIP (Cer-DIP)

A

A

A

Pin 1

V

3

40

2

12

Pin 11

H

Optical black position

(Top View)

TM

∗

EXview HAD CCD is a trademark of Sony Corporation EXview HAD CCD is a CCD that drastically improves light efficiency by including
near infrared light region as a basic structure of HAD (Hole-Accnmulation Diode) sensor.

AAA
AAA
AAA

– 2 –

ICX248AL

Pin No. Symbol Description Pin No. Symbol Description

1
2
3
4
5
6
7
8
9

10

Vφ4
Vφ3
Vφ2

φSUB

GND
Vφ1
VL
GND
VDD
VOUT

Vertical register transfer clock
Vertical register transfer clock
Vertical register transfer clock
Substrate clock
GND
Vertical register transfer clock
Protective transistor bias
GND
Output circuit supply voltage
Signal output

11
12
13
14
15
16
17
18
19
20

VGG
VDSUB
VSS
GND
GND
RD

φRG

NC
Hφ1
Hφ2

Output circuit gate bias
Substrate bias circuit supply voltage
Output circuit source
GND
GND
Reset drain bias
Reset gate clock

Horizontal register transfer clock
Horizontal register transfer clock

1

2

3

4

5

6

7

8

9

10

11

12

13

14 15

16

Note)

Note) : Photo sensor

GND

V

L

Vφ

1

GND

φ

SUB

Vφ

2

Vφ

3

Vφ

4

V

GG

V

DSUB

V

SS

GND

GND

RD

φ

RG

NC

Horizontal Register

Vertical Register

17

18

19

20

V

DD

V

OUT

Hφ

1

Hφ

2

Block Diagram and Pin Configuration

(Top View)

Pin Description

– 3 –

ICX248AL

Item

–0.3 to +50
–0.3 to +18

–55 to +10
–15 to +20

to +10
to +15

to +17
–17 to +17
–10 to +15
–55 to +10

–65 to +0.3
–0.3 to +30

–30 to +80
–10 to +60

V
V
V
V
V
V
V
V
V
V
V

V
°C
°C

∗1

Ratings Unit Remarks

Absolute Maximum Ratings

∗1

+27V (Max.) when clock width < 10µs, clock duty factor < 0.1%.

Substrate clock φSUB – GND

VDD, VRD, VDSUB, VOUT, VSS – GND

Supply voltage

VDD, VRD, VDSUB, VOUT, VSS – φSUB
Vφ1, Vφ2, Vφ3, Vφ4 – GND

Clock input voltage

Vφ1, Vφ2, Vφ3, Vφ4 – φSUB
Voltage difference between vertical clock input pins
Voltage difference between horizontal clock input pins
Hφ1, Hφ2 – Vφ4

φRG, VGG – GND
φRG, VGG – φSUB

VL – φSUB
Pins other than GND and φSUB – VL
Storage temperature
Operating temperature

– 4 –

ICX248AL

Item

VDD
VRD
VGG
VSS
VL
VDSUB
VSUB
∆VSUB

14.55

14.55

1.75

6.0
–3

15.0

15.0

2.0

∗3
∗4

15.45

15.45

2.25

14.0
+3

V
V
V

V

%

VRD = VDD

∗5
∗5

Symbol Min. Typ. Max. Unit Remarks

Bias Conditions 2 [when used in substrate bias external adjustment mode]

Output circuit supply voltage
Reset drain voltage
Output circuit gate voltage
Output circuit source
Protective transistor bias
Substrate bias circuit supply voltage
Substrate voltage adjustment range
Substrate voltage adjustment precision

∗3

VL setting is the VVL voltage of the vertical transfer clock waveform, or the same power supply as the VL
power supply for the V driver should be used. (When CXD1267AN is used.)

∗4

Connect to GND or leave open.

∗5

The setting value of the substrate voltage (VSUB) is indicated on the back of the image sensor by a special
code. When adjusting the substrate voltage externally, adjust the substrate voltage to the indicated voltage.
The adjustment precision is ±3%. However, this setting value has not significance when used in substrate
bias internal generation mode.

VSUB code — one character indication
Code and optimal setting correspond to each other as follows.

DC Characteristics

Item

Output circuit supply current IDD 5.0 10.0 mA

Symbol Min. Typ. Max. Unit Remarks

VSUB code
Optimal setting 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5

10.0 10.5 11.011.5 12.0 12.5 13.0 13.5 14.0

E f G h J K L m N P Q R S T U V W

<Example> "L" → VSUB = 9.0V

Item

VDD
VRD
VGG
VSS
VL
VDSUB

φSUB

14.55

14.55

1.75

14.55

15.0

15.0

2.0

∗1

15.0

∗2

15.45

15.45

2.25

15.45

V
V
V

V

VRD = VDD

Symbol Min. Typ. Max. Unit Remarks

Bias Conditions 1 [when used in substrate bias internal generation mode]

Output circuit supply voltage
Reset drain voltage
Output circuit gate voltage
Output circuit source
Protective transistor bias
Substrate bias circuit supply voltage
Substrate clock

Grounded with 390Ω resistor

∗1

VL setting is the VVL voltage of the vertical transfer clock waveform, or the same power supply as the VL
power supply for the V driver should be used. (When CXD1267AN is used.)

∗2

Do not apply a DC bias to the substrate clock pin, because a DC bias is generated within the CCD.

Grounded with 390Ω resistor

– 5 –

ICX248AL

Item

Readout clock voltage

VVT
VVH1, VVH2
VVH3, VVH4
VVL1, VVL2,

VVL3, VVL4
VφV
| VVH1 – VVH2 |
VVH3 – VVH
VVH4 – VVH
VVHH
VVHL
VVLH
VVLL
VφH
VHL
VRGL
VφRG
VRGLH – VRGLL
VφSUB

14.55
–0.05

–0.2
–9.6

8.3

–0.25
–0.25

4.75

–0.05

4.5

23.0

15.0
0
0

–9.0

9.0

5.0
0

∗1

5.0

24.0

15.45

0.05

0.05
–8.5

9.65

0.1

0.1

0.1

0.5

0.5

0.5

0.5

5.25

0.05

5.5

0.8

25.0

V
V
V

V

Vp-p

V
V
V
V
V
V
V

Vp-p

V
V

Vp-p

V

Vp-p

1
2
2

2
2

2
2
2
2
2
2
2
3
3
4
4
4
5

VVH = (VVH1 + VVH2)/2

VVL = (VVL3 + VVL4)/2
VφV = VVHn – VVLn (n = 1 to 4)

High-level coupling
High-level coupling
Low-level coupling
Low-level coupling

Low-level coupling

Horizontal transfer
clock voltage

Reset gate clock
voltage

∗1

Substrate clock voltage

Vertical transfer clock
voltage

Symbol Min. Typ. Max. Unit

Waveform

diagram

Remarks

Item Symbol Min. Typ. Max. Unit

Waveform

diagram

Remarks

∗1

Input the reset gate clock without applying a DC bias. In addition, the reset gate clock can also be driven
with the following specifications.

Reset gate clock
voltage

VRGL
VφRG

–0.2

8.509.0

0.2

9.5VVp-p

4
4

Clock Voltage Conditions

– 6 –

ICX248AL

Clock Equivalent Circuit Constant

Item

Capacitance between vertical transfer clock
and GND

CφV1, CφV3
CφV2, CφV4
CφV12, CφV34
CφV23, CφV41
CφH1
CφH2
CφHH
CφRG
CφSUB
R1, R2, R3, R4
RGND

1800
2200

450
270

64
62
47

8

400

68
15

pF
pF
pF
pF
pF
pF
pF
pF
pF

Ω
Ω

Capacitance between vertical transfer clocks

Capacitance between horizontal transfer clock
and GND

Capacitance between horizontal transfer clocks
Capacitance between reset gate clock and GND
Capacitance between substrate clock and GND
Vertical transfer clock series resistor
Vertical transfer clock ground resistor

Symbol Min. Typ. Max. Unit Remarks

Hφ2Hφ1

CφH1 CφH2

CφHH

Vφ1

CφV12

Vφ2

Vφ4 Vφ3

CφV34

CφV23CφV41

CφV1 CφV2

CφV4 CφV3

RGND

R4

R1

R3

R2

Vertical transfer clock equivalent circuit Horizontal transfer clock equivalent circuit