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ADS7842E Arkusz danych(PDF) 3 Page - Texas Instruments |
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ADS7842E Arkusz danych(HTML) 3 Page - Texas Instruments |
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3 / 20 page  ADS7842 SBAS103C 3 www.ti.com ELECTRICAL CHARACTERISTICS: +5V At TA = –40°C to +85°C, +VCC = +5V, VREF = +5V, fSAMPLE = 200kHz, and fCLK = 16 • fSAMPLE = 3.2MHz, unless otherwise noted. ADS7842E ADS7842EB PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS RESOLUTION 12 ✻ Bits ANALOG INPUT Full-Scale Input Span 0 VREF ✻✻ V Capacitance 25 ✻ pF Leakage Current ±1 ✻ µA SYSTEM PERFORMANCE No Missing Codes 12 ✻ Bits Integral Linearity Error ±2 ±1 LSB(1) Differential Linearity Error ±0.8 ±0.5 ±1LSB Offset Error ±3 ✻ LSB Offset Error Match 0.15 1.0 ✻✻ LSB Gain Error ±4 ±3LSB Gain Error Match 0.1 1.0 ✻✻ LSB Noise 30 ✻ µVrms Power-Supply Rejection 70 ✻ dB SAMPLING DYNAMICS Conversion Time 12 ✻ Clk Cycles Acquisition Time 3 ✻ Clk Cycles Throughput Rate 200 ✻ kHz Multiplexer Settling Time 500 ✻ ns Aperture Delay 30 ✻ ns Aperture Jitter 100 ✻ ps DYNAMIC CHARACTERISTICS Total Harmonic Distortion(2) VIN = 5Vp-p at 10kHz –78 –72 –80 –76 dB Signal-to-(Noise + Distortion) VIN = 5Vp-p at 10kHz 68 71 70 72 dB Spurious-Free Dynamic Range VIN = 5Vp-p at 10kHz 72 79 76 81 dB Channel-to-Channel Isolation VIN = 5Vp-p at 50kHz 120 ✻ dB REFERENCE INPUT Range 0.1 +VCC ✻✻ V Resistance DCLK Static 5 ✻ G Ω Input Current 40 100 ✻✻ µA fSAMPLE = 12.5kHz 2.5 ✻ µA DCLK Static 0.001 3 ✻✻ µA DIGITAL INPUT/OUTPUT Logic Family CMOS ✻ Logic Levels VIH | IIH | ≤ +5µA 3.0 5.5 ✻✻ V VIL | IIL | ≤ +5µA –0.3 +0.8 ✻✻ V VOH IOH = –250µA 3.5 ✻ V VOL IOL = 250µA 0.4 ✻ V Data Format Straight Binary ✻ External Clock 0.2 3.2 ✻✻ MHz POWER-SUPPLY REQUIREMENTS +VCC Specified Performance 4.75 5.25 ✻✻ V Quiescent Current 550 900 ✻✻ µA fSAMPLE = 12.5kHz 300 ✻ µA Power-Down Mode(3), CS = +VCC 3 ✻ µA Power Dissipation 4.5 ✻ mW TEMPERATURE RANGE Specified Performance –40 +85 ✻✻ °C ✻ Same specifications as ADS7842E. NOTES: (1) LSB means Least Significant Bit. With VREF equal to +5.0V, one LSB is 1.22mV. (2) First five harmonics of the test frequency. (3) Power-down mode at end of conversion when WR, CS, and BUSY conditions have all been met. Refer to Table III of this data sheet. |
Podobny numer części - ADS7842E |
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