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ADAS1000-4BSTZ 数据表(PDF) 6 Page - Analog Devices |
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ADAS1000-4BSTZ 数据表(HTML) 6 Page - Analog Devices |
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6 / 80 page  ADAS1000-3/ADAS1000-4 Data Sheet Rev. B | Page 6 of 80 Parameter Min Typ Max Unit Test Conditions/Comments Gain Error −1 +0.01 +1 % GAIN 0 to GAIN 2, factory calibrated; programmable user or factory calibration option enables; factory gain calibration applies only to standard ECG interface −2 +0.1 +2 % GAIN 3 setting, no factory calibration for this gain Gain Matching −0.1 +0.02 +0.1 % GAIN 0 to GAIN 2 −0.5 +0.1 +0.5 % GAIN 3 Gain Tempco1 25 ppm/°C Input Referred Noise1 GAIN 2, 2 kHz data rate, see Table 4 Analog Lead Mode 6 μV p-p 0.5 Hz to 40 Hz; high performance mode 10 μV p-p 0.05 Hz to 150 Hz; high performance mode 12 μV p-p 0.05 Hz to 150 Hz; low power mode Electrode Mode 11 μV p-p 0.05 Hz to 150 Hz; high performance mode 12 μV p-p 0.05 Hz to 150 Hz; low power mode Digital Lead Mode 14 μV p-p 0.05 Hz to 150 Hz; high performance mode 16 μV p-p 0.05 Hz to 150 Hz; low power mode Power Supply Sensitivity2 100 dB At 120 Hz Analog Channel Bandwidth1 65 kHz Dynamic Range1 104 dB GAIN 0, 2 kHz data rate, −0.5 dBFS input signal, 10 Hz Signal-to-Noise Ratio1 100 dB −0.5 dB FS input signal COMMON-MODE INPUT CM_IN pin Input Voltage Range 0.3 2.3 V Input Impedance2 1||10 GΩ||pF Input Bias Current −40 ±1 +40 nA Over operating range; dc and ac lead-off disabled −200 +200 nA AGND to AVDD COMMON-MODE OUTPUT CM_OUT pin VCM_REF 1.28 1.3 1.32 V Internal voltage; independent of supply Output Voltage, VCM 0.3 1.3 2.3 V No dc load Output Impedance1 0.75 kΩ Not intended to drive current Short-Circuit Current1 4 mA Electrode Summation Weighting Error2 1 % Resistor matching error RESPIRATION FUNCTION (ADAS1000-4 ONLY) These specifications apply to the following pins: EXT_RESP_LA, EXT_RESP_LL, EXT_RESP_RA and selected internal respiration paths (Lead I, Lead II, Lead III) Input Voltage Range 0.3 2.3 V AC-coupled, independent of supply Input Voltage Range (Linear Operation) 1.8/gain V p-p Programmable gain (10 states) Input Bias Current −10 ±1 +10 nA Applies to EXT_RESP_xx pins over AGND to AVDD Input Referred Noise1 0.85 μV rms Frequency2 46.5 to 64 kHz Programmable frequency, see Table 30 Excitation Current Respiration drive current corresponding to differential voltage programmed by the RESPAMP bits in the RESPCTL register; internal respiration mode, cable 5 kΩ/200 pF, 1.2 kΩ chest impedance 64 μA p-p Drive Range A 32 μA p-p Drive Range B2 16 μA p-p Drive Range C2 8 μA p-p Drive Range D2 Resolution2 24 Bits Update rate 125 Hz Measurement Resolution1 0.2 Ω Cable <5 kΩ/200 pF per electrode, body resistance modeled as 1.2 kΩ 0.02 Ω No cable impedance, body resistance modeled as 1.2 kΩ In-Amp Gain1 1 to 10 Digitally programmable in steps of 1 Gain Error 1 % LSB weight for GAIN 0 setting Gain Tempco1 25 ppm/C |
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