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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ADS1262 датащи(PDF) 7 Page - TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS |
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ADS1262 датащи(HTML) 7 Page - TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS |
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7 / 134 page  ADS1262, ADS1263 www.ti.com SBAS661B – FEBRUARY 2015 – REVISED JULY 2015 7.3 Recommended Operating Conditions over operating ambient temperature range (unless otherwise noted) MIN NOM MAX UNIT POWER SUPPLY VAVDD to VAVSS 4.75 5 5.25 V Analog power supply VAVSS to VDGND –2.6 0 V Digital power supply VDVDD to VDGND 2.7 5.25 V ADC1 ANALOG INPUTS FSR Full-scale differential input voltage range(1) –VREF / Gain VREF / Gain V PGA enabled See Equation 12 V VINP,VINN Absolute input voltage (2) PGA bypassed VAVSS – 0.1 VAVDD + 0.1 V ADC2 ANALOG INPUTS (ADS1263) Full-scale differential input voltage range –VREF / Gain VREF / Gain V Gain = 1, 2 and 4 VAVSS – 0.1 VAVDD + 0.1 V Absolute input voltage Gain = 8 to 128 See Equation 15 V VOLTAGE REFERENCE INPUTS VAVDD – VAVSS VREF Differential reference voltage VREF = VREFP – VREFN 0.9 V + 0.2 VREFN Negative reference voltage VAVSS – 0.1 VREFP – 0.9 V VREFP Positive reference voltage VREFN + 0.9 VAVDD + 0.1 V CLOCK INPUT External clock frequency 1 7.3728 8 MHz fCLK External clock duty cycle 30% 70% External crystal frequency 1 7.3728 8 MHz GENERAL-PURPOSE INPUT/OUTPUT (GPIO) Input voltage VAVSS VAVDD V DIGITAL INPUTS (other than GPIO) Input voltage VDGND VDVDD V TEMPERATURE TA Operating ambient temperature –40 125 °C (1) FSR is the ideal full-scale differential input voltage range, excluding noise, offset and gain errors. For ADC1, the maximum FSR is achieved with VREF = 5 V and the PGA bypassed. If the PGA is enabled and VREF = 5 V, the FSR is limited by the PGA input range. For ADC2, if VREF = 5 V and gains = 8 to 128 then FSR is limited by the PGA input range. (2) VINP, VINN = Absolute Input Voltage. VIN = Differential Input Voltage = VINP – VINN. 7.4 Thermal Information ADS126x THERMAL METRIC(1) PW (TSSOP) UNIT 28 PINS RθJA Junction-to-ambient thermal resistance 65.2 °C/W RθJC(top) Junction-to-case (top) thermal resistance 13.6 °C/W RθJB Junction-to-board thermal resistance 23.6 °C/W ψJT Junction-to-top characterization parameter 0.5 °C/W ψJB Junction-to-board characterization parameter 23.1 °C/W RθJC(bot) Junction-to-case (bottom) thermal resistance N/A °C/W (1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953. Copyright © 2015, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: ADS1262 ADS1263 |
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