TC255P

336-

× 244-PIXEL CCD IMAGE SENSOR

SOCS057 – JUNE 1996

2-11

POST OFFICE BOX 655303

PARAMETER MEASUREMENT INFORMATION

DR (dynamic range)

+ 20 log

Vsat

Vn

dB

Vn = noise-floor voltage

Vsat (min) = minimum saturation voltage

Vuse (max) = maximum usable voltage

Vuse (typ) = typical user voltage (camera white clip)

NOTES: A. Vuse (typ) is defined as the voltage determined to equal the camera white clip. This voltage must be less than Vuse

(max).

B. A system trade-off is necessary to determine the system light sensitivity versus the signal/noise ratio. By lowering

the Vuse (typ),

the light sensitivity of the camera is increased; however, this sacrifices the signal/noise ratio of the camera.

SNR (signal-to-noise-rate)

+ 20 log

Vuse

Vn

dB

(light input)

Lux

Enabled

With Antiblooming

Blooming Point

Well Capacity

Dependent on

Disabled

With Antiblooming

Blooming Point

Gate High Level

Upon Antiblooming

Level Dependent

SNR

Vn

Vsat (min)

Vuse (typ)

Vuse (max)

VO

DR