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MAX1367 Datasheet(PDF) 5 Page - Maxim Integrated Products |
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MAX1367 Datasheet(HTML) 5 Page - Maxim Integrated Products |
5 / 25 page Stand-Alone, 4.5-/3.5-Digit Panel Meters with 4–20mA Output _______________________________________________________________________________________ 5 ELECTRICAL CHARACTERISTICS (continued) (AVDD = DVDD = DAC_VDD = +2.7V to +5.25V, GND = 0, VLEDV = +2.7V to +5.25V, LEDG = 0, VREF+ - VREF- = 2.048V (external reference), 4-20OUT = 7V, VREG_AMP = +5.0V, CREF+ = 0.1µF, REF- = GND, CNEGV = 0.1µF. Internal clock mode, unless otherwise noted. All specifications are at TA = TMIN to TMAX. Typical values are at TA = +25°C, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DAC OUTPUT ACCURACY Zero-Scale Error 4–20mA or 0 to 16mA mode, TA = +25°C ±50 µA Zero-Scale Error Tempco ±40 ppmFS/ °C Gain Error 4–20mA or 0 to 16mA mode, TA = +25°C ±0.5 %FS Gain-Error Tempco ±25 ppmFS/ °C Span Linearity ±2 ±4µA Power-Supply Rejection PSR VEXT = 7V to 30V 4 µA/V Signal Path Noise 10pF to GND on 4-20OUT 2.0 µARMS 4–20mA Current Limit Limited to 12.5 x VREF / 1.28k Ω 20 mA Note 1: Integral nonlinearity is the deviation of the analog value at any code from its theoretical value after nulling the gain error and offset error. Note 2: Offset calibrated. Note 3: Offset nulled. Note 4: Drift error is eliminated by recalibration at the new temperature. Note 5: The input voltage range for the analog inputs is given with respect to the voltage on the negative input of the differential pair. Note 6: VAIN+ or VAIN- = -2.2V to +2.2V. VREF+ or VREF- = -2.2V to +2.2V. All input structures are identical. Production tested on AIN+ and REF+ only. VREF+ must always be greater than VREF-. Note 7: Power-supply currents are measured with all digital inputs at either GND or DVDD. Note 8: Measured at DC by changing the power-supply voltage from 2.7V to 5.25V and measuring the effect on the conversion error with external reference. PSRR at 50Hz and 60Hz exceeds 120dB with filter notches at 50Hz and 60Hz (Figure 1). Note 9: LED drivers are disabled. |
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