TC244A Datasheet, PDF (11/19 Pages) Texas Instruments – 786- × 488-PIXEL CCD IMAGE SENSOR

TC244A
786- × 488-PIXEL CCD IMAGE SENSOR
SOCS056 – JUNE 1996
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 13)
Gamma (see Note 6)
60
3.8
0.99990
18
0.97
70
4
0.99995
20
0.98
dB
4.2 µV/e
1
22
ns
0.99
Output resistance
Noise voltage
1/f noise (5 kHz)
Random noise (f = 100 kHz)
700
800
Ω
0.1
µV/√Hz
0.08
Noise-equivalent signal
30
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
6500
SRG1, SRG2, SRG3
68
Input capacitance, Ci
ABG
TRG
2400
pF
180
SAG
6800
† _{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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