TC254P Datasheet, PDF (11/16 Pages) Texas Instruments – 336- × 244-pixel ccd image sensor

VO
Vsat _(min)
TC254P
336- × 244-PIXEL CCD IMAGE SENSOR
SOCS060B – JUNE 1997 – REVISED JULY 1998
PARAMETER MEASUREMENT INFORMATION
Blooming Point
With Antiblooming
Disabled
Blooming Point
With Antiblooming
Enabled
Dependent on
Well Capacity
Vuse _(max)
Level Dependent
Upon Antiblooming
DR
Gate High Level
Vuse _(typ)
SNR
Vn
+ ^{ǒ Ǔ} ē DR (dynamic range)
20 log
Vsat
Vn
B
+ ^{ǒ Ǔ} ē SNR (signal-to-noise-rate)
20 log
Vuse
Vn
B
Lux
(light input)
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.
Figure 7. Typical V_sat, V_use Relationship
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