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AMC7823IRTAT 数据表(PDF) 3 Page - Texas Instruments |
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AMC7823IRTAT 数据表(HTML) 3 Page - Texas Instruments |
3 / 48 page www.ti.com ELECTRICAL CHARACTERISTICS: +5 V AMC7823 SLAS453A – APRIL 2005 – REVISED OCTOBER 2005 At –40°C to +85°C, AV DD = 5 V, DVDD = 5 V, BVDD = 3 V to 5 V, using external 2.5-V reference (unless otherwise noted). AMC7823 PARAMETER CONDITIONS MIN TYP MAX UNITS ADC ANALOG INPUTS Input voltage range 0 2 × VREF V Input impedance 5 M Ω Input capacitance 15 pF Input leakage current ±1 µA ANALOG-TO-DIGITAL CONVERTER Resolution 12 Bits No missing codes 12 Bits Integral linearity ±1 LSB(1) Differential linearity ±1 LSB Offset error ±2 LSB Offset error drift ±4 ppmFS/°C Offset error match 0.5 1 LSB Gain error ±6 LSB Gain error match 0.3 1 LSB Noise 70 µVRMS Power-supply rejection AVDD = 5 V ±5% 70 dB Throughput rate 200 kHz Total conversion time Scan Channels 0 through 7 45 µs Total conversion time including temperature Scan Channels 0 through 8 56 µs Channel-to-channel isolation VIN = 5 VPP at 10 kHz 0.5 LSB DIGITAL-TO-ANALOG CONVERTER(2) Output voltage range Programmable 0 2 × VREF V Output current Refer to Typical Characteristics ±1 mA Resolution 12 Bits Integral linearity(3) ±2 ±8 LSB Monotonicity 12 Bits Differential linearity ±0.2 ±1 LSB Output range = 0 to VREF ±0.5 ±5 mV Offset error Output range = 0 to 2 x VREF ±1 ±10 mV Offset error drift ±4 ppmFS/°C Gain error Output range = 0 to 2 x VREF ±0.3 ±1.0 %FS Step between code 0x400 to 0xC00, Settling time 2 µs to ±1 LSB Code change glitch 1 LSB change, in worst case 20 nV-s Overshoot Step between code 0x400 to 0xC00 200 mV Crosstalk Step between code 0x400 to 0xC00 < 0.5 LSB Sine wave (1 kHz, 5 VPP) generated by Signal-to-noise ratio DAC, sampling at 400 kSPS, 74 dB RL = 10 kΩ, CL = 100 pF. Output buffer gain = 2 60 nV/ √Hz Output noise voltage density Output buffer gain = 1 30 nV/ √Hz (1) LSB means least significant bit. (2) DAC is tested with load of 25 k Ω in parallel with 100 pF to ground. (3) Measured from code 0x008 to 0xFFF. 3 |
类似零件编号 - AMC7823IRTAT |
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类似说明 - AMC7823IRTAT |
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