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REF3320AIDBZT Datasheet(PDF) 11 Page - Texas Instruments |
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REF3320AIDBZT Datasheet(HTML) 11 Page - Texas Instruments |
11 / 32 page J A D JA T T P RT 6 OUTMAX OUTMIN OUT V V Drift 10 (ppm) V Temperature Range æ ö - = × ç ÷ × è ø REF3312, REF3318, REF3320, REF3325, REF3330, REF3333 www.ti.com SBOS392E – AUGUST 2007 – REVISED OCTOBER 2014 Feature Description (continued) 9.3.2 Low Temperature Drift The REF33xx is designed for minimal drift error, defined as the change in output voltage over temperature. The drift is calculated using the box method, as described in Equation 2: (2) 9.3.3 Power Dissipation The REF33xx family is specified to deliver current loads of ±5 mA over the specified input voltage range. The temperature of the device increases according to Equation 3: where • TJ = junction temperature (°C). • TA = ambient temperature (°C). • PD = power dissipation (W) = VIN × IQ + (VIN – VOUT) IOUT. • RθJA = Junction-to-ambient thermal resistance (°C/W). (3) The REF33xx junction temperature must not exceed the absolute maximum rating of 150°C. 9.3.4 Noise Performance Typical 0.1-Hz to 10-Hz voltage noise for each member of the REF33xx family is specified in the Electrical Characteristics table. The noise voltage increases with output voltage and operating temperature. Use additional filtering to improve output noise levels. Give special attention to ensure that the output impedance does not degrade output voltage accuracy. 9.4 Device Functional Modes The REF33xx is powered on when the voltage on the IN pin is greater than VOUT + 0.2 V, except for the REF3312, where the minimum supply voltage is 1.8 V. The maximum input voltage for the REF33xx is 5.5 V. Use a supply bypass capacitor ranging between 1 μF to 10 μF. The total capacitive load at the output must be between 0.1 μF to 10 μF to ensure output stability. Copyright © 2007–2014, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Links: REF3312 REF3318 REF3320 REF3325 REF3330 REF3333 |
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