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ADS7950SRGET Datasheet(PDF) 8 Page - Texas Instruments |
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ADS7950SRGET Datasheet(HTML) 8 Page - Texas Instruments |
8 / 65 page ADS7950, ADS7951, ADS7952, ADS7953 ADS7954, ADS7955, ADS7956, ADS7957 ADS7958, ADS7959, ADS7960, ADS7961 SLAS605A – JUNE 2008 – REVISED JANUARY 2010 www.ti.com ELECTRICAL CHARACTERISTICS, ADS7954/55/56/57 (continued) +VA = 2.7 V to 5.25 V, +VBD = 1.7 V to 5.25 V, Vref = 2.5 V ± 0.1 V, TA = -40°C to 125°C, fsample = 1 MHz (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Power-down state supply current 1 mA +VBD supply current +VA = 5.25V, fs = 1MHz 1 mA Power-up time 1 mSec Invalid conversions after power up or 1 Numbers reset TEMPERATURE RANGE Specified performance –40 125 °C ELECTRICAL CHARACTERISTICS, ADS7958/59/60/61 +VA = 2.7 V to 5.25 V, +VBD = 1.7 V to 5.25 V, Vref = 2.5 V ± 0.1 V, TA = -40°C to 125°C, fsample = 1 MHz (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ANALOG INPUT Range 1 0 Vref Full-scale input span(1) V Range 2 while 2Vref ≤ +VA 0 2*Vref VREF Range 1 –0.20 +0.20 Absolute input range V 2*VREF Range 2 while 2Vref ≤ +VA –0.20 +0.20 Input capacitance 15 rF Input leakage current TA = 125°C 61 nA SYSTEM PERFORMANCE Resolution 8 Bits No missing codes 8 Bits Integral linearity –0.3 ±0.1 0.3 LSB(2) Differential linearity –0.3 ±0.1 0.3 LSB Offset error(3) –0.5 ±0.2 0.5 LSB Range 1 –0.6 ±0.1 0.6 Gain error LSB Range 2 ±0.1 SAMPLING DYNAMICS Conversion time 20 MHz SCLK 800 nSec Acquisition time 325 nSec Maximum throughput rate 20 MHz SCLK 1.0 MHz Aperture delay 5 nsec Step response 150 nsec Over voltage recovery 150 nsec DYNAMIC CHARACTERISTICS Total harmonic distortion(4) 100 kHz –75 dB Signal-to-noise ratio 100 kHz 49 dB Signal-to-noise + distortion 100 kHz 49 Spurious free dynamic range 100 kHz –78 dB Full power bandwidth At –3 dB 47 MHz (1) Ideal input span; does not include gain or offset error. (2) LSB means Least Significant Bit. (3) Measured relative to an ideal full-scale input (4) Calculated on the first nine harmonics of the input frequency. 8 Submit Documentation Feedback Copyright © 2008–2010, Texas Instruments Incorporated Product Folder Link(s): ADS7950, ADS7951, ADS7952, ADS7953 ADS7954, ADS7955, ADS7956, ADS7957 ADS7958, ADS7959, ADS7960, ADS7961 |
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