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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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AMC7812B Fiches technique(PDF) 3 Page - Texas Instruments |
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AMC7812B Fiches technique(HTML) 3 Page - Texas Instruments |
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3 / 93 page  AMC7812B www.ti.com SBAS625A – SEPTEMBER 2013 – REVISED SEPTEMBER 2013 ELECTRICAL CHARACTERISTICS At TA = –40°C to +105°C, AVDD = DVDD = 4.5 V to 5.5 V, AVCC = +15 V, AGND = DGND = 0 V, IOVDD = 2.7 V to 5.5 V, internal 2.5-V reference, and the DAC output span = 0 V to 5 V, unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT DAC PERFORMANCE DAC DC ACCURACY Resolution 12 Bits TA = –40°C to +105°C, measured by line passing ±1 LSB through codes 020h and FFFh INL Relative accuracy TA = –40°C to +125°C, measured by line passing ±1.25 LSBs through codes 020h and FFFh TA = –40°C to +125°C, measured by line passing DNL Differential nonlinearity ±0.3 ±1 LSB through codes 020h and FFFh TA = +25°C, DAC output = 5.0 V ±10 mV TUE Total unadjusted error TA = +25°C, DAC output = 12.5 V ±30 mV TA = +25°C, DAC output = 0 V to +5 V, ±2 mV code 020h Offset error TA = +25°C, DAC output = 0 V to +12.5 V, ±5 mV code 020h Offset error temperature coefficient ±1 ppm/°C TA = –40°C to +125°C, external reference, ±0.025 ±0.15 %FSR output = 0 V to +5 V Gain error TA = –40°C to +125°C, external reference, –0.15 ±0.3 %FSR output = 0 V to +12.5 V Gain temperature coefficient ±2 ppm/°C DAC OUTPUT CHARACTERISTICS TA = –40°C to +125°C, VREF = 2.5 V, gain = 2 0 5 V Output voltage range(1) TA = –40°C to +125°C, VREF = 2.5 V, gain = 5 0 12.5 V DAC output = 0 V to +5 V, code 400h to C00h, Output voltage settling time(2) to 1/2 LSB, from CS rising edge, RL = 2 kΩ, 3 µs CL = 200 pF Slew rate(2) 1.5 V/µs Short-circuit current(2) Full-scale current shorted to ground 30 mA Source within 200 mV of supply, TA = +25°C +10 mA Sink within 300 mV of supply, TA = +25°C –10 mA Load current DAC output = 0 V to +5 V, code B33h. Source and sink with voltage drop < 25 mV, ±8 mA TA = –40°C to +95°C Capacitive load stability(2) RL = infinite 10 nF DC output impedance(2) Code 800h 0.3 Ω Power-on overshoot AVCC 0 V to 5 V, 2-ms ramp 5 mV Digital-to-analog glitch energy Code changes from 7FFh to 800h, 800h to 7FFh 0.15 nV-s Digital feedthrough Device is not accessed 0.15 nV-s TA = +25°C, at 1 kHz, code 800h, gain = 2, 81 nV/ √Hz excludes reference Output noise f = 0.1 Hz to 10 Hz, excludes reference 8 µVPP DAC REFERENCE INPUT Reference voltage input range TA = –40°C to +125°C, REF-DAC pin 1 2.6 V Input current(2) VREF = 2.5 V 170 µA (1) The output voltage must not be greater than AVCC. See the DAC Output section for further details. (2) Sampled during initial release to ensure compliance; not subject to production testing. Copyright © 2013, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: AMC7812B |
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