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VSP2270 Datasheet(PDF) 6 Page - Texas Instruments |
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VSP2270 Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 19 page  VSP2270 SLES019 – DECEMBER 2001 6 www.ti.com electrical characteristics all specifications at TA = 25°C, VCC = 3 V, DRVDD = 3 V, conversion rate (fADCCK) = 20 MHz (unless otherwise noted) (continued) PARAMETER TEST CONDITIONS VSP2270Y, VSP2270M UNIT PARAMETER TEST CONDITIONS MIN TYP MAX UNIT TRANSFER CHARACTERISTICS DNL Differential nonlinearity PGA gain = 0 dB ±0.5 LSB INL Integral nonlinearity PGA gain = 0 dB ±1 LSB No missing codes Assured Step response settling time Full-scale step input 1 pixel Overload recovery time Step input from 1.8 V to 0 V 2 pixels Data latency 9 (fixed) Clock Cycles Signal to noise ratio (see Note 1) Grounded input capacitor, PGA gain = 0 dB 77 dB Signal-to-noise ratio (see Note 1) Grounded input capacitor, gain = 24 dB 53 dB CCD offset correction range –180 200 mV CDS Reference sample settling time Within 1 LSB, driver impedance = 50 Ω 8.9 ns Data sample settling time Within 1 LSB, driver impedance = 50 Ω 8.9 ns INPUT CLAMP Clamp-on resistance 400 Ω Clamp level 1.5 V PROGRAMMABLE GAIN AMPLIFIER (PGA) Gain control resolution 10 Bits Maximum gain Gain code = 1111111111 42 High gain Gain code = 1101001000 34 Medium gain Gain code = 1000100000 20 dB Low gain Gain code = 0010000000 0 dB Minimum gain Gain code = 0000000000 –6 Gain control error ±0.5 OPTICAL BLACK CLAMP LOOP Control DAC resolution 10 Bits Optical black clamp level Programmable range of clamp level 0 60 LSB Optical black clamp level OBCLP level at CODE = 1000 32 LSB Minimum output current for control DAC COB pin ±0.15 µA Maximum output current for control DAC COB pin ±153 µA Loop time constant CCOB = 0.1 µF 40.7 µs Slew rate CCOB = 0.1 µF, Saturated output current of control DAC 1530 V/s POWER SUPPLY Supply voltage VCC, DRVDD 2.7 3 3.6 V Power dissipation Normal operation mode: No load 93 mW Power dissipation Stand-by mode: fADCCK = Does not apply 6 mW TEMPERATURE RANGE Operating temperature –25 85 °C θ Thermal resistance VSP2270Y: 48-lead LQFP 100 °C/W θJA Thermal resistance VSP2270M: 48-lead P-VQFN 107 °C/W NOTE 1: SNR = 20 log (full-scale voltage / rms noise) |
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