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ADS7952-Q1 Datasheet(PDF) 8 Page - Texas Instruments |
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ADS7952-Q1 Datasheet(HTML) 8 Page - Texas Instruments |
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8 / 52 page  ADS7950-Q1, ADS7951-Q1, ADS7952-Q1, ADS7953-Q1, ADS7954-Q1 ADS7956-Q1, ADS7957-Q1, ADS7958-Q1, ADS7959-Q1, ADS7960-Q1, ADS7961-Q1 SBAS652A – MAY 2014 – REVISED AUGUST 2014 www.ti.com 7.6 Electrical Characteristics: ADS7954-Q1, ADS7956-Q1, ADS7957-Q1 V(+VA) = 2.7 V to 5.25 V, V(+VBD) = 1.7 V to V(+VA), Vref = 2.5 V ± 0.1 V, TA = –40°C to 125°C, ƒsample = 1 MHz (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ANALOG INPUT Range 1 0 Vref V Full-scale input span(1) Range 2 while 2 × Vref ≤ +VA 0 2 × Vref V Range 1 –0.2 Vref + 0.2 V Absolute input range Range 2 while 2 × Vref ≤ +VA –0.2 2 × Vref +0.2 V Input capacitance 15 ρF Input leakage current TA = 125°C 61 nA SYSTEM PERFORMANCE Resolution 10 Bits No missing codes 10 Bits Integral linearity –0.5 ±0.2 0.5 LSB(2) Differential linearity –0.5 ±0.2 0.5 LSB Offset error(3) –1.5 ±0.5 1.5 LSB Range 1 –1 ±0.1 1 LSB Gain error Range 2 ±0.1 LSB SAMPLING DYNAMICS Conversion time 20-MHz SCLK 800 ns Acquisition time 325 ns Maximum throughput rate 20-MHz SCLK 1 MHz Aperture delay 5 ns Step response 150 ns Over voltage recovery 150 ns DYNAMIC CHARACTERISTICS THD Total harmonic distortion(4) 100 kHz –80 dB SNR Signal-to-noise ratio 100 kHz 60 dB SINAD Signal-to-noise + distortion 100 kHz 60 dB SFDR Spurious-free dynamic range 100 kHz 82 dB Full-power bandwidth At –3 dB 47 MHz Any off-channel with 100 kHz. Full-scale input to channel –95 dB being sampled with dc input. Channel-to-channel crosstalk From previously sampled to channel with 100 kHz. Full- –85 dB scale input to channel being sampled with dc input. EXTERNAL REFERENCE INPUT Vref Reference voltage at REFP 2 2.5 3 V Rref Reference resistance 100 k Ω ALARM SETTING Higher threshold range 000 FFC Hex Lower threshold range 000 FFC Hex DIGITAL INPUT/OUTPUT (CMOS Logic Family) High logic-level input voltage 0.7 × VIH V V(+VBD) V(+VBD) = 5 V 0.8 V VIL Low logic-level input voltage V(+VBD) = 3 V 0.4 V VOH At source current (IS) = 200 μA V(+VBD) – High logic-level output voltage V 0.2 VOL Low logic-level output voltage At Isink = 200 μA 0.4 V Data format MSB first MSB first (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 © 2014, Texas Instruments Incorporated Product Folder Links: ADS7950-Q1 ADS7951-Q1 ADS7952-Q1 ADS7953-Q1 ADS7954-Q1 ADS7956-Q1 ADS7957- Q1 ADS7958-Q1 ADS7959-Q1 ADS7960-Q1 ADS7961-Q1 |
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