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AMC7836IPAPRG4 数据表(PDF) 11 Page - Texas Instruments |
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AMC7836IPAPRG4 数据表(HTML) 11 Page - Texas Instruments |
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11 / 91 page  11 AMC7836 www.ti.com SLAS986D – NOVEMBER 2014 – REVISED FEBRUARY 2018 Product Folder Links: AMC7836 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated (1) Internal reference contribution not included. 6.6 Electrical Characteristics: ADC and Temperature Sensor The electrical ratings specified in this section apply to all specifications in this document, unless otherwise noted. These specifications are interpreted as conditions that do not degrade the device parametric or functional specifications for the life of the product containing it. AVDD = DVDD = 4.7 to 5.5 V, AVCC = 12 V, IOVDD = 1.8 to 5.5 V, AGND = DGND = 0 V, AVEE = AVSSB = AVSSC = AVSSD = –12 V (for DAC groups in negative range) or 0 V (for DAC groups in positive ranges), DAC output range = 0 to 10 V for all groups, no load on the DACs, TA = –40°C to 105°C PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Resolution 12 Bits Integral nonlinearity Unipolar input channels ±0.5 ±1 LSB Bipolar input channels ±0.5 ±1.5 Differential nonlinearity Specified monotonic. All input channels ±0.5 ±1 LSB UNIPOLAR ANALOG INPUTS: LV_ADC16 to LV_ADC20 Absolute input voltage range AGND – 0.2 AVDD + 0.2 V Full scale input range Vref measured at REF_CMP pin 0 2 × Vref V Input capacitance 34 pF DC input leakage current Unselected ADC input ±10 µA Offset error ±1 ±5 LSB Offset error match ±0.5 LSB Gain error(1) ±0.5 ±5 LSB Gain error match ±1 LSB Update time Single unipolar input, temperature sensor disabled 11.5 µs BIPOLAR ANALOG INPUTS: ADC_0 to ADC_15 Absolute input voltage range –13 13 V Full scale input range –12.5 12.5 V Input resistance 175 kΩ Offset error ±0.25 ±5 LSB Gain error(1) ±0.5 ±5 LSB Update time Single bipolar input, temperature sensor disabled 34.5 µs TEMPERATURE SENSOR Operating range –40 125 °C Accuracy TA = –40°C to 125°C, AVDD = 5 V ±1.25 ±2.5 °C Resolution LSB size 0.25 °C Update time All ADC input channels disabled 256 µs ADC UPDATE TIME Internal oscillator frequency 3.7 4 4.3 MHz ADC update time All 21 ADC inputs enabled, temperature sensor disabled. 609.5 µs All 21 ADC inputs enabled, temperature sensor enabled. 865.5 µs INTERNAL REFERENCE (INTERNAL REFERENCE NOT ACCESSIBLE) Initial accuracy TA = 25°C 2.4925 2.5 2.5075 V Reference temperature coefficient 12 35 ppm/°C INTERNAL ADC REFERENCE BUFFER Reference buffer offset TA = 25°C ±5 mV |
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