UPD8670CY Renesas Electronics America, UPD8670CY Datasheet - Page 20

• Manufacturer Part Number: UPD8670CY
• Manufacturer: Renesas Electronics America

Specifications of UPD8670CY

• Lead Free Status / RoHS Status: Supplier Unconfirmed

18
10. Register imbalance : RI
11. Random noise : σ
12. Shot noise :
RI (%) =
The rate of the difference between the averages of the output voltage of Odd and Even pixels, against the average
output voltage of all the valid pixels.
Random noise σ is defined as the standard deviation of a valid pixel output signal with 100 times (= 100 lines)
data sampling at dark (light shielding).
This is measured by the DC level sampling of only the signal level, not by CDS (Correlated Double Sampling).
Shot noise is defined as the standard deviation of a valid pixel output signal with 100 times (= 100 lines) data
sampling in the light. This includes the random noise.
The formula is the same with that of random noise.
σ
(mV) =
2
n
∑
j = 1
n
2
σ
100
Σ
i = 1
shot
(V
1
n
(V
2j – 1
∑
100
j = 1
n
i
V
– V)
– V
j
2j
2
)
V
× 100
n
V
OUT
j
: Number of valid pixels
: Output voltage of each pixel
, V =
V
i
: A valid pixel output signal among all of the valid pixels
100
Data Sheet S16749EJ1V0DS
1
100
Σ
i = 1
V
i
V
V
V
100
1
2
line 1
line 2
line 100
µ
PD8670