8

µPD3753

DEFINITIONS OF CHARACTERISTIC ITEMS

1.

Output signal voltage at which the response linearity is lost.

2.

Saturation exposure: SE

Product of intensity of illumination (lx) and storage time (s) when saturation of output voltage occurs.

3.

Photo response non-uniformity: PRNU

The peak/bottom ratio to the average output voltage of all the valid bits calculated by the following formula.

–1

PRNU (%) =

n : Number of valid bits

1

n

j

=1

n

∑

x 100

1

n

j

=1

n

∑

4.

Average dark signal: ADS

Output average voltage in light shielding.

1

n

j

=1

n

∑

ADS(mV) =

5.

Dark signal non-uniformity: DSNU

The difference between peak or bottom output voltage in light shielding and ADS.

Register Dark

DC level

ADS

DSNU MIN.

DSNU MAX.

Register Dark

DC level