FT18SLASHTG datasheet(8/16 Pages) PHILIPS

8 / 16 page

2000 January

Philips Semiconductors

Product specification

Frame Transfer CCD Image Sensor

FT 18

Performance

The performance of the FT 18 is described for modes of operation

with 25 frames/sec or 30 frames/sec respectively. Measurements

for the FT 18 are done under the following circumstances (values in

brackets apply for the 30 frames/sec mode):

• VNS is adjusted as low as possible while maintaining proper

Vertical Anti-Blooming.

• Integration takes place under 2 gates with 10V clock swing during

40ms (33.33ms)

• The vertical transport or frame shift frequency equals 750kHz

(714kHz).

• The horizontal transport or read-out frequency equals 36MHz

(40MHz).

• The RMS read-out noise of the output buffers and the FPN are

measured in the bandwidth 0.1-18MHz (0.1-20MHz).

• The performance in dark is given at a temperature of 318K / 45°C.

Note that the dark current decreases by a factor of two for every

decrease of temperature of approximately 10°C.

1 White Shading is defined as the ratio of the one-

σ value of an 8x8 pixel blurred image (low-pass) to the mean signal value.

2 Random Non Uniformity is defined as the ratio of the one-

σ value of the highpass image to the mean signal value at nominal light.

3 Q

max is determined from the lowpass filtered image.

4 Q

max of the output register may be increased up to 200kel. In this case the charge packets of the pixels may get mixed in the output register

during horizontal transport. This may reduce the number of times that the output register needs to be read out if lines are read out solely to be

dumped.

5 The smear condition is: overexposure with a spot with a height of 10% of the image height (approx. 100 lines).

Linear / Saturation

Min.

Typical

Max.

Unit

Overexposure over entire area while maintaining good VAB

Vertical resolution (MTF) @ 67 lp/mm

Quantum efficiency @ 450 nm

Quantum efficiency @ 520 nm

Quantum efficiency @ 600 nm

Quantum efficiency @ 800 nm (near IR)

Image lag

White Shading

Random Non-Uniformity (RNU)

Full-well capacity Floating Diffusion (FD)

Full-well capacity saturation level (Q

max )

3 image

Full-well capacity saturation level (Q

max ) storage

Full-well capacity saturation level (Q

max ) output register

300

120

1.0

2.5

1.4

lux

kel.

25 frames/sec mode only

Sensitivity @ 3200K without IR cut-off filter

Smear without shutter

Dynamic range

RMS read-out noise

5.6

5.8

63.8

0.39

kel/lux

30 frames/sec mode only

Sensitivity @ 3200K without IR cut-off filter

Smear without shutter

Dynamic range

RMS read-out noise

4.6

4.8

63.5

0.40

kel/lux

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