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ADS7958SRGER Datasheet(PDF) 11 Page - Texas Instruments |
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ADS7958SRGER Datasheet(HTML) 11 Page - Texas Instruments |
11 / 70 page ADS7950, ADS7951, ADS7952, ADS7953, ADS7954, ADS7955 ADS7956, ADS7957, ADS7958, ADS7959, ADS7960, ADS7961 www.ti.com SLAS605B – JUNE 2008 – REVISED JULY 2015 Electrical Characteristics: ADS7950/51/52/53 (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 DYNAMIC CHARACTERISTICS Total harmonic distortion(5) 100 kHz –82 dB Signal-to-noise ratio 100 kHz, ADS795XSB(2) 70 71.7 dB 100 kHz, ADS795XS(2) 70 71.7 Signal-to-noise + distortion 100 kHz, ADS795XSB(2) 69 71.3 dB 100 kHz, ADS795XS(2) 68 71.3 Spurious free dynamic range 100 kHz 84 dB Small signal bandwidth At –3 dB 47 MHz Any off-channel with 100 kHz, Full-scale input to channel being sampled with DC input (isolation –95 crosstalk). Channel-to-channel crosstalk dB From previously sampled to channel with 100 kHz, Full-scale input to channel being sampled –85 with DC input (memory crosstalk). EXTERNAL REFERENCE INPUT Vref reference voltage at REFP (6) 2 2.5 3 V Reference resistance 100 k Ω ALARM SETTING Higher threshold range 0 FFC Hex Lower threshold range 0 FFC Hex DIGITAL INPUT/OUTPUT Logic family CMOS VIH 0.7*(+VBD ) VIL +VBD = 5 V 0.8 Logic level V VIL +VBD = 3 V 0.4 VOH At Isource = 200 μA Vdd-0.2 VOL At Isink = 200 μA 0.4 Data format MSB first MSB First POWER SUPPLY REQUIREMENTS +VA supply voltage 2.7 3.3 5.25 V +VBD supply voltage 1.7 3.3 5.25 V At +VA = 2.7 to 3.6 V and 1 MHz throughput 1.8 mA At +VA = 2.7 to 3.6 V static state 1.05 mA Supply current (normal mode) At +VA = 4.7 to 5.25 V and 1 MHz throughput 2.3 3 mA At +VA = 4.7 to 5.25 V static state 1.1 1.5 mA Power-down state supply current 1 μA +VBD supply current +VA = 5.25 V, fs = 1MHz 1 mA Power-up time 1 μs Invalid conversions after power up or 1 Numbers reset TEMPERATURE RANGE Specified performance –40 125 °C (5) Calculated on the first nine harmonics of the input frequency. (6) Device is designed to operate over Vref = 2 V to 3 V. However one can expect lower noise performance at Vref < 2.4 V. This is due to SNR degradation resulting from lowered signal range. Copyright © 2008–2015, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Links: ADS7950 ADS7951 ADS7952 ADS7953 ADS7954 ADS7955 ADS7956 ADS7957 ADS7958 ADS7959 ADS7960 ADS7961 |
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