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ADS7822P bảng dữ liệu(PDF) 4 Page - Texas Instruments |
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ADS7822P bảng dữ liệu(HTML) 4 Page - Texas Instruments |
4 / 28 page www.ti.com ELECTRICAL CHARACTERISTICS: +VCC = +5V ADS7822 SBAS062C – JANUARY 1996 – REVISED AUGUST 2007 At –40 °C to +85°C, +V CC = +5V, VREF = +5V, fSAMPLE = 200kHz, and fCLK = 16 × fSAMPLE, unless otherwise noted. ADS7822 ADS7822B PARAMETER TEST CONDITIONS UNIT MIN TYP MAX MIN TYP MAX ANALOG INPUT Full-scale input span +In – (–In) 0 VREF 0 VREF V +In – GND –0.2 VCC + 0.2 –0.2 VCC + 0.2 V Absolute input range –In – GND –0.2 +1.0 –0.2 +1.0 V Capacitance 25 25 pF Leakage current ±1 ±1 μA SYSTEM PERFORMANCE Resolution 12 12 Bits No missing codes 11 12 Bits Integral linearity error –2 +2 –1 +1 LSB (1) Differential linearity error ±0.8 –1 ±0.5 +1 LSB Offset error –3 +3 –3 +3 LSB Gain error –4 +4 –3 +3 LSB Noise 33 33 μVrms Power-supply rejection 70 70 dB SAMPLING DYNAMICS Conversion time 12 12 Clk Cycles Acquisition time 1.5 1.5 Clk Cycles Throughput rate 200 200 kHz DYNAMIC CHARACTERISTICS Total harmonic distortion VIN = 5VPP at 10kHz –78 –78 dB SINAD VIN = 5VPP at 10kHz 71 71 dB Spurious-free dynamic range VIN = 5VPP at 10kHz 79 79 dB REFERENCE OUTPUT Voltage range 0.05 VCC 0.05 VCC V CS = GND, fSAMPLE = 0Hz 5 5 G Ω Resistance CS = VCC 5 5 G Ω At code 710h 40 100 40 100 μA Current drain fSAMPLE = 12.5kHz 2.5 2.5 μA CS = VCC 0.001 3 0.001 3 μA DIGITAL INPUT/OUTPUT Logic family CMOS CMOS VIH IIH = +5μA 3.0 5.5 3.0 5.5 V VIL IIL = +5μA –0.3 0.8 –0.3 0.8 V Logic levels VOH IOH = –250μA 3.5 3.5 V VOL IOL = 250μA 0.4 0.4 V Data format Straight Binary Straight Binary POWER-SUPPLY REQUIREMENTS VCC Specified performance 4.75 5.25 4.75 5.25 V Quienscent current fSAMPLE = 200kHz 320 550 320 550 μA Power down CS = VCC 3 3 μA TEMPERATURE RANGE Specified performance –40 +85 –40 +85 °C (1) LSB means least significant bit. With VREF equal to +5V, one LSB is 1.22mV. 4 Submit Documentation Feedback Copyright © 1996–2007, Texas Instruments Incorporated Product Folder Link(s): ADS7822 |
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Mô tả tương tự - ADS7822P |
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