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AD9944KCP Datasheet(PDF) 5 Page - Analog Devices |
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AD9944KCP Datasheet(HTML) 5 Page - Analog Devices |
5 / 20 page AD9943/AD9944 Rev. B | Page 5 of 20 AD9944 SYSTEM SPECIFICATIONS TMIN to TMAX, AVDD = DVDD = DRVDD = 3 V, fSAMP = 25 MHz, unless otherwise noted. Table 4. Parameter Min Typ Max Unit Conditions CDS Maximum Input Range before Saturation1 1.0 V p-p Allowable CCD Reset Transient 1 500 mV See input waveform in footnote. Maximum CCD Black Pixel Amplitude 1 100 mV VARIABLE GAIN AMPLIFIER (VGA) Gain Control Resolution 1024 Steps Gain Monotonicity Guaranteed Gain Range Minimum Gain 5.3 dB See Figure 13 for VGA gain curve. Maximum Gain 40 41.5 dB See Variable Gain Amplifier section for VGA gain equation. BLACK LEVEL CLAMP Clamp Level Resolution 256 Steps Clamp Level Measured at ADC output. Minimum Clamp Level 0 LSB Maximum Clamp Level 255 LSB A/D CONVERTER Resolution 12 Bits Differential Nonlinearity (DNL) ±0.4 LSB No Missing Codes Guaranteed Data Output Coding Straight binary Full-Scale Input Voltage 2.0 V VOLTAGE REFERENCE Reference Top Voltage (REFT) 2.0 V Reference Bottom Voltage (REFB) 1.0 V SYSTEM PERFORMANCE Specifications include entire signal chain. Gain Range Low Gain (VGA Code = 0) 5.3 dB Maximum Gain (VGA Code = 1023) 40 41.5 dB Gain Accuracy ±1 dB Peak Nonlinearity 500 mV Input Signal 0.1 % 12 dB gain applied. Total Output Noise 0.9 LSB rms AC grounded input, 6 dB gain applied. Power Supply Rejection (PSR) 50 dB Measured with step change on supply. 1 Input signal characteristics defined as follows: 100mV TYP OPTICAL BLACK PIXEL 500mV TYP RESET TRANSIENT 1V TYP INPUT SIGNAL RANGE |
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