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ADS7822 bảng dữ liệu(PDF) 2 Page - Burr-Brown (TI) |
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ADS7822 bảng dữ liệu(HTML) 2 Page - Burr-Brown (TI) |
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2 / 12 page  2 ® ADS7822 SPECIFICATIONS At –40 °C to +85°C, +V CC = +2.7V, VREF = +2.5V, fSAMPLE = 75kHz, fCLK = 16 • fSAMPLE, unless otherwise specified. The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant any BURR-BROWN product for use in life support devices and/or systems. ADS7822 ADS7822B ADS7822C PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS ANALOG INPUT Full-Scale Input Span +In – (–In) 0 VREF TT TT V Absolute Input Range +In –0.2 VCC +0.2 TT TT V –In –0.2 +1.0 TT TT V Capacitance 25 TT pF Leakage Current ±1 TT µA SYSTEM PERFORMANCE Resolution 12 TT Bits No Missing Codes 11 12 T Bits Integral Linearity Error ±0.5 ±2 ±0.5 ±1 ±0.25 ±0.75 LSB(1) Differential Linearity Error ±0.5 ±2 ±0.5 ±1 ±0.25 ±0.75 LSB Offset Error ±3 T ±1 LSB Gain Error ±3 T ±1 LSB Noise 33 TT µVrms Power Supply Rejection 82 TT dB SAMPLING DYNAMICS Conversion Time 12 TT Clk Cycles Acquisition Time 1.5 TT Clk Cycles Throughput Rate 75 TT kHz DYNAMIC CHARACTERISTICS Total Harmonic Distortion VIN = 2.5Vp-p at 1kHz –82 TT dB SINAD VIN = 2.5Vp-p at 1kHz 71 TT dB Spurious Free Dynamic Range VIN = 2.5Vp-p at 1kHz 86 TT dB REFERENCE INPUT Voltage Range 0.05 VCC TT TT V Resistance CS = GND, fSAMPLE = 0Hz 5 TT G Ω CS = VCC 5 TT G Ω Current Drain At Code 710h 8 40 TT TT µA fSAMPLE = 7.5kHz 0.8 TT µA CS = VCC 0.001 3 TT TT µA DIGITAL INPUT/OUTPUT Logic Family CMOS TT Logic Levels: VIH IIH = +5µA 2.0 5.5 TT TT V VIL IIL = +5µA –0.3 0.8 TT TT V VOH IOH = –250µA 2.1 TT V VOL IOL = 250µA 0.4 TT V Data Format Straight Binary TT POWER SUPPLY REQUIREMENTS VCC Specified Performance 2.7 3.6 TT TT V See Notes 2 and 3 2.0 2.7 TT TT V See Note 3 3.6 5.25 TT TT V Quiescent Current 200 325 TT TT µA fSAMPLE = 7.5kHz(4,5) 20 TT µA fSAMPLE = 7.5kHz(5) 180 TT µA Power Down CS = VCC 3 TT µA TEMPERATURE RANGE Specified Performance –40 +85 TT TT °C T Specifications same as ADS7822. Notes: (1) LSB means Least Significant Bit. With VREF equal to +2.5V, one LSB is 0.61mV. (2) The maximum clock rate of the ADS7822 is less than 1.2MHz in this power supply range. (3) See the Typical Performance Curves for more information. (4) fCLK = 1.2MHz, CS = VCC for 145 clock cycles out of every 160. (5) See the Power Dissipation section for more information regarding lower sample rates. |
Số phần tương tự - ADS7822 |
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Mô tả tương tự - ADS7822 |
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