TC217_08 Datasheet, PDF (14/21 Pages) Texas Instruments – pixel ccd image sensor

TC217
ą
1158ĆĂ×Ă488ĆPIXEL CCD IMAGE SENSOR
ą
SOCS015C − OCTOBER 1989 − REVISED JUNE 1996
electrical characteristics over recommended operating ranges of supply voltage and free-air
temperature
PARAMETER
Dynamic range (see Note 2)
Charge conversion factor
Charge transfer efficiency (see Note 3)
Signal response delay time, τ (see Note 4 and Figure 18)
MIN
60
0.9999
18
TYP†
73
6
0.99995
20
MAX
UNIT
dB
µV/e
22
ns
Gamma (see Note 5)
Output resistance
0.89
0.94
0.99
600
1000
Ω
Noise voltage
1/f noise (5 kHz)
Random noise (f = 100 kHz)
0.1
µV/√Hz
0.08
Noise equivalent signal
15
electrons
Rejection ratio at 4.77 MHz
ADB (see Note 6)
SRGn (see Note 7)
ABG (see Note 8)
20
40
dB
30
Supply current
IAG
6
13000
9 mA
SAG1, SAG2
11000
Input capacitance, Ci
ABG
TMG
4100
pF
150
TRG
200
SRG1, SRG2, SRG3
180
† _{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. It is measured using a
correlated clamp-sample-and-hold circuit and with the image sensor’s antiblooming disabled.
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 clock 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:
ǒ Ǔ ǒ Ǔ ^g
Exposure (2)
Exposure (1)
+
Output signal (2)
Output signal (1)
6. ADB rejection ratio is − 20 times the logarithm of the ac amplitude on OUTn divided by the ac amplitude on ADB.
7. SRGn rejection ratio is − 20 times the logarithm of the ac amplitude on OUTn divided by the ac amplitude on SRGn.
8. ABG rejection ratio is − 20 times the logarithm of the ac amplitude on OUTn divided by the ac amplitude on ABG.
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