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ADS1293CISQ Datasheet(PDF) 7 Page - Texas Instruments |
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ADS1293CISQ Datasheet(HTML) 7 Page - Texas Instruments |
7 / 75 page ADS1293 www.ti.com SNAS602B – FEBRUARY 2013 – REVISED MARCH 2013 ELECTRICAL CHARACTERISTICS (1) (continued) Unless otherwise noted, all limits are specified at TA = +25°C, +2.7V ≤ VDD ≤ +5.5V, +1.65V ≤ VDDIO ≤ MIN(+3.6V, VDD), VREF = +2.4V, fOSC = 409.6kHz, 1µF low ESR capacitor between CVREF and GND, 0.1µF capacitor between RLDREF and GND. Boldface limits apply for TMIN ≤ TA ≤ TMAX. PARAMETER TEST CONDITIONS MIN(2) TYP(3) MAX(2) UNIT RIGHT LEG DRIVE AMPLIFIER (RLD Amp) VOS Input-Referred Offset Voltage ±5 mV CMVR Common-Mode Voltage Range 0.5 VDD – 0.5 V Low bandwidth mode 50 kHz GBW Programmable Gain Bandwidth High bandwidth mode 200 kHz Low bandwidth mode 25 mV/ μs SR Slew Rate High bandwidth mode 90 mV/ μs High bandwidth, Low cap-drive mode (see Table 11) 400 pF Programmable Capacitive Load Driving ClMAX Capability Low bandwidth, High cap-drive mode (see Table 11) 8 nF Low bandwidth, Low cap-drive mode 20 36 μA IVDD Quiescent Power Consumption High bandwidth, High cap-drive mode 60 91 μA RIGHT LEG DRIVE REFERENCE (VDD – RLDREF Output Voltage Unloaded V VSS)/2.2 COMMON-MODE DETECTOR AMPLIFIER (CMDET Amp) CMVR Common-Mode Voltage Range 0.5 VDD – 0.5 V Low bandwidth mode 50 kHz BW Programmable Bandwidth High bandwidth mode 150 kHz Low bandwidth mode 25 mV/ μs SR Slew Rate High bandwidth mode 90 mV/ μs High bandwidth mode, Low capdrive mode (see 400 pF Table 10) Programmable Capacitive Load Driving ClMAX Capability Low bandwidth mode, High cap- drive mode (see 8 nF Table 10) N leads, low bandwidth mode, low cap-drive mode 21 + 3 × N μA IVDD Power Consumption (Selected Leads) N leads, high bandwidth mode, high cap-drive mode 61 + 3 × N μA WILSON REFERENCE CIRCUIT IVR Input Voltage Range 0.5 VDD – 0.5 V BW Bandwidth 3 buffers ON 50 kHz SR Slew Rate 3 buffers ON 45 mV/ μs Ne Noise Density At 10Hz 60 nV/ √Hz Input-Referred Noise for Wilson Ve 0.1 - 200Hz, 3 buffers ON 5.5 μVPP Reference Amp IVDD Power Consumption (Selected Leads) N leads, low power mode 7 × N μA LEAD OFF DETECTION Programmable: Min. code 0x01 8 nA (See Lead-Off Detection (LOD)) IEXC Excitation Current Programmable: Max. code 0xFF 2040 nA (See Lead-Off Detection (LOD)) IEXCTOL Excitation Current Accuracy 25% AC LOD mode, programmable, minimum 6.1 Hz (see Analog AC Lead-Off Detect ) FEXC Excitation Frequency AC LOD mode, programmable, maximum 12.5 kHz (see Analog AC Lead-Off Detect) VTHDC DC Lead Off Comparator Threshold VDD – 0.5 V VHYST Comparator Hysteresis DC lead off mode 55 mV IVDD Current Consumption Programmed excl. excitation current 25 μA Copyright © 2013, Texas Instruments Incorporated 7 Product Folder Links: ADS1293 |
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