TC241 Datasheet, PDF (11/18 Pages) Texas Instruments – 780- × 488-pixel ccd image sensor

TC241
780- × 488-PIXEL CCD IMAGE SENSOR
SOCS006C – AUGUST 1986 – REVISED DECEMBER 1991
electrical characteristics over recommended operating ranges of supply voltage and operating
free-air temperature (unless otherwise noted)
PARAMETER
MIN TYP†
MAX UNIT
Dynamic range (see Note 2)
Antiblooming disabled (see Note 3)
Charge-conversion factor
Charge-transfer efficiency (see Note 4)
Signal-response delay time, τ (see Note 5 and Figure 11)
Gamma (see Note 6)
Output resistance
Noise voltage
1/f noise (5 kHz)
Random noise (f = 100 kHz)
60
1.4
0.9999
18
0.97
1.6
0.99995
20
0.98
700
0.13
0.11
dB
1.8 µV/e
22
ns
800
Ω
µV/√Hz
Noise-equivalent signal
120
electrons
ADB (see Note 7)
20
Rejection ratio at 4.77 MHz
SRG1, SRG2, SRG3 (see Note 8)
40
dB
ABG (see Note 9)
20
Supply current
5
mA
IAG
12000
SRG1, SRG2, SRG3
120
Input capacitance, Ci
ABG
TRG
4000
pF
350
SAG
14000
† _{All typical values are at TA = 25 °C}
NOTES: 2. Dynamic range is – 20 times the logarithm of the mean-noise signal divided by the saturation-output signal.
3. For this test, the antiblooming gate must be biased at the intermediate level.
4. Charge-transfer efficiency is one minus the charge loss per transfer in the output register. The test is performed in the dark using
an electrical input signal.
5. Signal-response delay time is the time between the falling edge of the SRG clock pulse and the output-signal valid state.
6. Gamma (γ) is the value of the exponent in the equation below for two points on the linear portion of the transfer-function curve (this
ǒ Ǔ + ǒ Ǔ value represents points near saturation):
g
Exposure (2)
Output signal (2)
Exposure (1)
Output signal (1)
7. ADB rejection ratio is – 20 times the logarithm of the ac amplitude at the output divided by the ac amplitude at ADB.
8. SRGn rejection ratio is – 20 times the logarithm of the ac amplitude at the output divided by the ac amplitude at SRGn.
9. ABG rejection ratio is – 20 times the logarithm of the ac amplitude at the output divided by the ac amplitude at ABG.
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