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ADS7841-Q1 Datasheet(PDF) 5 Page - Texas Instruments |
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ADS7841-Q1 Datasheet(HTML) 5 Page - Texas Instruments |
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5 / 24 page  ADS7841-Q1 www.ti.com SBAS469B – MARCH 2009 – REVISED SEPTEMBER 2011 ELECTRICAL CHARACTERISTICS VCC = 2.7 V, VREF = 2.5 V, fSAMPLE = 125 kHz, fCLK = 16 × fSAMPLE = 2 MHz, over operating temperature –40°C to 85°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Analog Input CI Input capacitance 25 pF Ileak Leakage current ±1 μA System Performance Resolution 12 bits No missing codes 12 bits INL Integral linearity error ±2 LSB(1) DNL Differential linearity error ±0.8 LSB Offset error ±3 LSB Offset error match 0.15 1 LSB Gain error ±4 LSB Gain error match 0.1 1 LSB Vn Noise 30 μVrms PSRR Power-supply ripple rejection 70 dB Sampling Dynamics CLK tconv Conversion time 12 cycles CLK tacq Acquisition time 3 cycles Throughput rate 125 kHz tsettle Multiplexer settling time 500 ns td Aperture delay 30 ns tjitter Aperture jitter 100 ps Dynamic Characteristics THD Total harmonic distortion(2) VIN = 2.5 Vp-p at 10 kHz –77 –72 dB SINAD Signal to noise + distortion ratio VIN = 2.5 Vp-p at 10 kHz 68 71 dB Spurious-free dynamic range VIN = 2.5 Vp-p at 10 kHz 72 78 dB Channel-to-channel isolation VIN = 2.5 Vp-p at 50 kHz 100 dB Reference Input RI Resistance DCLK static 5 G Ω 13 40 II Input current fSAMPLE = 12.5 kHz 2.5 μA DCLK static 0.001 3 Digital Input/Output VOH High-level output voltage IOH = –250 μA 0.8 VCC V VOL Low-level output voltage IOL = 250 μA 0.4 V Power Supply 280 650 IQ Quiescent current fSAMPLE = 12.5 kHz 220 μA Power-down mode(3), CS = VCC 3 (1) LSB = least significant bit. With VREF = 2.5 V, one LSB is 0.61 mV. (2) First five harmonics of the test frequency (3) Auto power-down mode (PD1 = PD0 = 0) active or SHDN = GND Copyright © 2009–2011, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Link(s): ADS7841-Q1 |
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