UPD3734A Ver la hoja de datos (PDF) - NEC => Renesas Technology

Número de pieza

componentes Descripción

Fabricante

UPD3734A

2660 PIXELS CCD LINEAR IMAGE SENSOR

NEC => Renesas Technology 

µPD3734A

11. Random noise: σ

Random noise σ is defined as the standard deviation of a valid photocell output signal with 100 times (= 100

lines) data sampling at dark (light shielding).

σ (mV) =

100

∑ (Vi − V)2

i=1

100

, V=

1

100

∑ Vi

100 i=1

Vi: A valid photocell output signal among all of the valid photocells

VOUT

V1

V2

line 1

line 2

V100

line 100

This is measured by the DC level sampling of only the signal level, not by CDS (Correlated Double Sampling).

12

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