TC236P Datasheet, PDF (12/17 Pages) Texas Instruments – 680-×500-PIXEL CCD IMAGE SENSOR

TC236P
680- × 500-PIXEL CCD IMAGE SENSOR
SOCS055A – JUNE 1996 – REVISED APRIL 1997
electrical characteristics over recommended operating ranges of supply voltage and operating
free-air temperature (unless otherwise noted)
Dynamic range (see Note 2)
PARAMETER
With CDS‡
Without CDS‡
Charge-conversion factor
Charge-transfer efficiency (see Note 3)
Signal-response delay time, τ (see Note 4)
Gamma (see Note 5)
Output resistance
Noise-equivalent signal
With CDS‡
Without CDS‡
ADB (see Note 6)
MIN
0.9999
TYP†
69
58
13
0.99995
20
300
400
8.5
10
30
36
20
MAX UNIT
70
dB
59
µV/e
1
ns
1
500
Ω
12
electrons
42
Rejection ratio
Supply current, ICC
SRG (see Note 7)
ABG (see Note 8)
RST (see Note 9)
IAG1, IAG2
45
25
47
5
2000
dB
10 mA
Input capacitance, Ci
SRG
RST
70
pF
10
SAG
4000
† _{All typical values are at TA = 25°C.}
‡ _{CDS = Correlated double sampling, a signal-processing technique that improves noise performance by subtraction of reset noise.}
§ _{The rejection ratio is measured at 12.5 MHz.}
NOTES: 2. Dynamic range is – 20 times the logarithm of the mean-noise signal divided by the saturation-output signal.
3. 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.
4. Signal-response delay time is the time between the falling edge of the SRG pulse and the output-signal valid state.
5. 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)
6. ADB rejection ratio is – 20 times the logarithm of the ac amplitude at the output divided by the ac amplitude at ADB.
7. SRG rejection ratio is – 20 times the logarithm of the ac amplitude at the output divided by the ac amplitude at SRG.
8. ABG rejection ratio is – 20 times the logarithm of the ac amplitude at the output divided by the ac amplitude at ABG.
9. RST rejection ratio is – 20 times the logarithm of the ac amplitude at the output divided by the ac amplitude at RST.
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