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ADM1041ARQ-REEL Datasheet(PDF) 8 Page - Analog Devices |
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ADM1041ARQ-REEL Datasheet(HTML) 8 Page - Analog Devices |
8 / 64 page ADM1041 Rev. A | Page 8 of 64 Parameter Min Typ Max Unit Test Conditions/Comments DC Offset Trim Range (with respect to input) −8 mV Reg 17h[2:0] = 000. See Table 32 . −15 mV Reg 17h[2:0] = 001. See Table 32. −30 mV Reg 17h[2:0] = 010. See Table 32. 8 mV Reg 17h[2:0] = 100. See Table 32. 15 mV Reg 17h[2:0] = 101. See Table 32. 30 mV Reg 17h[2:0] = 110. See Table 32. DC Offset Trim Step Size 30 µV VCM = 2.0 V, VDIFF = 0 V (with respect to input) 50 µV 8 bits, 255 steps 120 µV Reg 15h[7:0]. See Table 30. CURRENT SENSE CALIBRATION Total Current Sense Error2 (Gain and Offset) VCSCM = 2.0V, 0°C ≤ TA ≤ 85 OC SHRS = SHRO = 2 V. Gain = 230x ±3 % Chopper ON ±6 % Chopper OFF Gain Range (ISENSE) Input voltage range at CS+, CS− Gain Setting 1 (Reg 16h[2:0] = 000) 65 V/V 34.0 mV – 44.5 mV. Gain = 65× Gain Setting 2 (Reg 16h[2:0] = 001) 85 V/V 26.0 mV – 34.0 mV. Gain = 85× Gain Setting 3 (Reg 16h[2:0] = 010) 110 V/V 20.0 mV – 26.0 mV. Gain = 110× Gain Setting 4 (Reg 16h[2:0] = 100) 135 V/V 16.0 mV – 20.0 mV. Gain = 135× Gain Setting 5 (Reg 16h[2:0] = 101) 175 V/V 12.0 mV – 16.0 mV. Gain = 175× Gain Setting 6 (Reg 16h[2:0] = 110) 230 V/V 9.5 mV – 12.0 mV. Gain = 230× Full Scale (No Offset) 2.0 V VZO = 0 Attenuation Range 65 to 99 % Reg 06h[7:1]. See Table 15. Current Share Trim Step (at SHRO) 0.4 % SHRS = SHRO = 1 V 8 mV 7 bits, 127 steps ISHARE slope Gain Accuracy2, 4, 40 mV at CS+, CS− −5 +5 % 0 V ≤ VCSCM ≤ 0.3 V. Gain = 65× VCSCM = Input Common Mode Gain Accuracy2, 4, 20 mV at CS+, CS− −5 ±1 +5 % VCSCM = 2.0V, 0°C ≤ TA ≤ 85°C Gain = 135× Gain Accuracy2, 4, 40 mV at CS+, CS– −2.5 ±0.5 +2.5 % VCSCM = 2.0 V, 0°C ≤ TA ≤ 85°C Gain = 65× SHARE BUS OFFSET See Figure 13. Current Share Offset Range 1.25 V Reg 17h[7] = 1. See Table 32. Reg 17h[5] = 1. See Table 32. Zero Current Offset Trim Step 0 ≤ VTRIM ≤ 1.25 V 0.4 % 8 bits, 255 steps, VCT = 1.0 V 5.5 mV Reg 05h[7:0]. See Table 14. CURRENT TRANSFORMER SENSE INPUT, ICT Reg 17h[7] = 1. See Table 32. Reg 06h = FEh. See Table 15. Gain Setting 0 4.5 V/V Reg 17h[5] = 0, VSHARE = 2 V. Table 31 Gain Setting 1 2.57 V/V Reg 17h[5] = 1. See Table 32. Reg 15h = 05h, approx 1 µA. See Table 30. VSHARE = 2 V. CT Input Sensitivity 0.45 0.5 0.68 V Gain setting = 4.5 CT Input Sensitivity 0.79 1.0 1.20 V Gain setting = 2.57 Input Impedance2 20 50 kΩ Source Current 2.0 µA See Current Transformer Input Section. Source Current Step Size 170 nA 15 steps Reg 15h[3:0]. See Table 30. Reverse Current for Extended SMBus Addressing (Source Current) 5 3.5 5 7 mA See Figure 38. See Absolute Maximum Ratings. |
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