CCD image sensor

S9037/S9038 series

s Specifications of built-in TE-cooler (Typ.)

Parameter

Symbol

Condition

S9038-0902

S9038-1002

Unit

Internal resistance

Rint

Ta=25 °C2.5

1.2

Ω

Maximum current *

8

Imax

Tc *

1.5

3.0

A

Maximum voltage

Vmax Tc *

3.6

V

M a xim um heat abso rption *

11

Qmax

3.4

5.1

W

Maximum temperature

of heat radiating side

-70

70

°C

*8: Maximum current Imax:

If the current greater than this value flows into the thermoelectric cooler, the heat absorption begins to decrease due to the

Joule heat. It should be noted that this value is not the damage threshold value. To protect the thermoelectric cooler and

maintain stable operation, the supply current should be less than 60 % of this maximum current.

*9: Temperature of the cooling side of thermoelectric cooler.

*10: Temperature of the heat radiating side of thermoelectric cooler.

*11: Maximum heat absorption Qmax.

This is a theoretical heat absorption level that offsets the temperature difference in the thermoelectric cooler when the

maximum current is supplied to the unit.

0

1

2

3

4

7

6

5

-40

-30

4

3

2

CURRENT (A)

1

0

-20

-10

0

10

20

30

(Typ. Ta=25 ˚C)

VOLTAGE vs. CURRENT

CCD TEMPERATURE vs. CURRENT

0

1

2

3

4

7

6

5

-40

-30

2.0

1.5

1.0

CURRENT (A)

0.5

0

-20

-10

0

10

20

30

(Typ. Ta=25 ˚C)

VOLTAGE vs. CURRENT

CCD TEMPERATURE vs. CURRENT

KMPDB0178EA

KMPDB0179EA

S9038-0902S

S9038-1002S

s Specifications of built-in temperature sensor

A chip thermistor is built in the same package with a CCD chip, and the CCD chip temperature can be monitored with it. A relation

between the thermistor resistance and absolute temperature is expressed by the following equation.

R1 = R2 × expB (1 / T1 - 1 / T2)

where R1 is the resistance at absolute temperature T1 (K)

R2 is the resistance at absolute temperature T2 (K)

B is so-called the B constant (K)

The characteristics of the thermistor used are as follows.

R (298K) = 10 k

Ω

B (298K / 323K) = 3450 K

KMPDB0111EA

(Typ. Ta=25 ˚C)

10 k

Ω

220

240

260

TEMPERATURE (K)

280

300

100 k

Ω

1 M

Ω

8