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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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ADS8688A Datenblatt(PDF) 8 Page - Texas Instruments |
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ADS8688A Datenblatt(HTML) 8 Page - Texas Instruments |
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8 / 80 page  ADS8684A, ADS8688A SBAS680 – JULY 2015 www.ti.com Electrical Characteristics (continued) Minimum and maximum specifications are at TA = –40°C to 125°C. Typical specifications are at TA = 25°C. AVDD = 5 V, DVDD = 3 V, VREF = 4.096 V (internal), and fSAMPLE = 500 kSPS, unless otherwise noted. TEST PARAMETER TEST CONDITIONS MIN TYP MAX UNIT LEVEL(1) DYNAMIC CHARACTERISTICS Input range = ±2.5 × VREF 90 92 A Input range = ±1.25 × VREF 89 91 A Input range = ±0.625 × VREF 87.5 89 A Input range = ±0.3125 × VREF 81.5 83 A Signal-to-noise ratio SNR Input range = ±0.15625 × VREF 75.5 77 dB A (VIN – 0.5 dBFS at 1 kHz) Input range = 2.5 × VREF 88.5 90.5 A Input range = 1.25 × VREF 87.5 89 A Input range = 0.625 × VREF 81.5 83 A Input range = 0.3125 × VREF 75.5 77 A Input ranges = ±2.5 × VREF, ±1.25 × VREF, ±0.625 × VREF, 2.5 × VREF, -102 1.25 × VREF Total harmonic distortion(7) THD dB B (VIN – 0.5 dBFS at 1 kHz) Input ranges = ±0.3125 × VREF, ±0.15625 × VREF, 0.625 × VREF, -100 0.3125 × VREF Input range = ±2.5 × VREF 89 91.5 A Input range = ±1.25 × VREF 88.5 91 A Input range = ±0.625 × VREF 87 89 A Input range = ±0.3125 × VREF 81 83 A Signal-to-noise ratio SINAD Input range = ±0.15625 × VREF 75 77 dB A (VIN – 0.5 dBFS at 1 kHz) Input range = 2.5 × VREF 87.5 90.5 A Input range = 1.25 × VREF 87 89 A Input range = 0.625 × VREF 81 83 A Input range = 0.3125 × VREF 75 77 A Input ranges = ±2.5 × VREF, ±1.25 × VREF, ±0.625 × VREF, 2.5 × VREF, 103 1.25 × VREF Spurious-free dynamic range SFDR dB B (VIN – 0.5 dBFS at 1 kHz) Input ranges = ±0.3125 × VREF, ±0.15625 × VREF, 0.625 × VREF, 101 0.3125 × VREF Aggressor channel input overdriven Crosstalk isolation(8) 110 dB B to 2 × maximum input voltage Aggressor channel input overdriven Crosstalk memory(9) 90 dB B to 2 × maximum input voltage BW(–3 dB) Small-signal bandwidth, –3 dB At TA = 25°C, all input ranges 15 kHz B BW(–0.1 dB) Small-signal bandwidth, –0.1 dB At TA = 25°C, all input ranges 2.5 kHz B (7) Calculated on the first nine harmonics of the input frequency. (8) Isolation crosstalk is measured by applying a full-scale sinusoidal signal up to 10 kHz to a channel, not selected in the multiplexing sequence, and measuring its effect on the output of any selected channel. (9) Memory crosstalk is measured by applying a full-scale sinusoidal signal up to 10 kHz to a channel that is selected in the multiplexing sequence, and measuring its effect on the output of the next selected channel for all combinations of input channels. 8 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated Product Folder Links: ADS8684A ADS8688A |
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