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Zakładka z wyszukiwarką danych komponentów |
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Zakładka z wyszukiwarką danych komponentów |
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ADS7950-Q1 Arkusz danych(PDF) 7 Page - Texas Instruments |
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ADS7950-Q1 Arkusz danych(HTML) 7 Page - Texas Instruments |
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7 / 52 page  ADS7950-Q1, ADS7951-Q1, ADS7952-Q1, ADS7953-Q1, ADS7954-Q1 ADS7956-Q1, ADS7957-Q1, ADS7958-Q1, ADS7959-Q1, ADS7960-Q1, ADS7961-Q1 www.ti.com SBAS652A – MAY 2014 – REVISED AUGUST 2014 Electrical Characteristics: ADS7950-Q1, ADS7951-Q1, ADS7952-Q1, ADS7953-Q1 (continued) 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 DYNAMIC CHARACTERISTICS THD Total harmonic distortion(4) 100 kHz –82 dB SNR Signal-to-noise ratio 100 kHz 70 71.7 dB SINAD Signal-to-noise + distortion 100 kHz 68 71.3 dB SFDR 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 –95 dB being sampled with DC input (isolation crosstalk). Channel-to-channel crosstalk From previously sampled to channel with 100 kHz. Full- scale input to channel being sampled with DC input –85 dB (memory crosstalk). EXTERNAL REFERENCE INPUT Vref Reference voltage at REFP(5) 2 2.5 3 V Rref Reference resistance 100 k Ω ALARM SETTING Higher threshold range 0 FFC Hex Lower threshold range 0 FFC Hex DIGITAL INPUT/OUTPUT (CMOS Logic Family) VIH 0.7 × High logic-level input voltage V V(+VBD) V(+VA) = 5 V 0.8 V VIL Low logic-level input voltage V(+VA) = 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 POWER SUPPLY REQUIREMENTS V(+VA) Analog power-supply voltage 2.7 3.3 5.25 V V(+VBD) Digital I/O-supply voltage 1.7 3.3 V(+VA) V At V(+VA) = 2.7 V to 3.6 V and 1-MHz throughput 1.8 mA At V(+VA) = 2.7 V to 3.6 V static state 1.05 mA I(+VA) Supply current (normal mode) At V(+VA) = 4.7 V to 5.25 V and 1-MHz throughput 2.3 3 mA At V(+VA) = 4.7 V to 5.25 V static state 1.1 1.5 mA Power-down state supply current 1 μA I(+VBD) Digital I/O-supply current V(+VA) = 5.25 V, ƒsample = 1 MHz 1 mA Power-up time 1 µs Invalid conversions after power up or 1 cycle reset Latch-up JESD78 class I TEMPERATURE RANGE Specified performance –40 125 °C (4) Calculated on the first nine harmonics of the input frequency. (5) The device is designed to operate over Vref = 2 V to 3 V. However, lower noise performance can be expected at Vref < 2.4 V, because of SNR degradation resulting from lowered signal range. Copyright © 2014, Texas Instruments Incorporated Submit Documentation Feedback 7 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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