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TC245 Datasheet(PDF) 11 Page - Texas Instruments |
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TC245 Datasheet(HTML) 11 Page - Texas Instruments |
11 / 19 page TC245 786- × 488-PIXEL CCD IMAGE SENSOR SOCS019A – DECEMBER 1991 2-11 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended operating range of supply voltage, TA = –10°C to 45°C PARAMETER MIN TYP† MAX UNIT Dynamic range (see Note 2) Antiblooming disabled (see Note 3) 60 70 dB Charge conversion factor 3.8 4 4.2 µV/e Charge transfer efficiency (see Note 4) 0.99990 0.99995 1 Signal response delay time, τ (see Note 5 and Figure 13) 18 20 22 ns Gamma (see Note 6) 0.97 0.98 0.99 Output resistance 700 800 Ω Noise voltage 1/f noise (5 kHz) 0.1 µV/√Hz Noise voltage Random noise (f = 100 kHz) 0.08 µV/√Hz 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 2400 pF TRG 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 value represents points near saturation): Exposure (2) Exposure (1) g + Output signal (2) 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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