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ADM1041ARQ-REEL bảng dữ liệu(PDF) 9 Page - Analog Devices |
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ADM1041ARQ-REEL bảng dữ liệu(HTML) 9 Page - Analog Devices |
9 / 64 page ADM1041 Rev. A | Page 9 of 64 Parameter Min Typ Max Unit Test Conditions/Comments CURRENT LIMIT ERROR AMPLIFIER See Figure 13 Current Limit Trim Range2 105 130 % After ISHARE calibration Current Limit Trim Step 1.1 % Current Limit Trim Step 26.5 mV 2.0 ≤ VSHARE ≤ 2.8 V typ. 5 bits, 31 steps. Reg 04h[7:3]. See Table 13. Transconductance 100 200 300 µA/V ICCMP = ±20 µA. See Figure 12. Output Source Current 40 µA VCCMP = > 1 V Output Sink Current 40 µA VCCMP = < VDD – 1 V CURRENT SHARE DRIVER See Figure 14. Output Voltage6 VDD – 0.4 V RL = 1 kΩ, VSHRS ≤ VDD – 2 V Short Circuit Source Current 55 mA Source Current 15 mA Current at which VOUT does not drop by more than 5% Sink Current 60 100 µA VSHARE = 2.0 V CURRENT SHARE DIFFERENTIAL SENSE AMPLIFIER See Figure 14. VS– Input Voltage 0.5 V Voltage on Pin 20 VSHRS Input Voltage VDD – 2 V Voltage on Pin 23 Input Impedance2 65 100 kΩ VSHRS = 0.5 V, VS− = 0.5 V Gain 1.0 V/V CURRENT SHARE ERROR AMPLIFIER Transconductance, SHRS to SCMP 100 200 300 µA/V ISCMP = ±20 µA Output Source Current 40 µA VSCMP > 1 V Output Sink Current 40 µA VSCMP < VDD – 1 V Input Offset Voltage 40 50 60 mV Master/slave arbitration Share OK Window Comparator Threshold SHRS = 2 V ± SHRTHRESH (Share Drive Error) ±100 mV Reg 04h[1:0] = 00. See Table 13. ±200 mV Reg 04h[1:0] = 01. See Table 13. ±300 mV Reg 04h[1:0] = 10. See Table 13. ±400 mV Reg 04h[1:0] = 11. See Table 13. CURRENT LIMIT Figure 10. Current Limit Control Lower Threshold 1.3 V VCCMP = 0.7 V, VS+ = 1.5 V Current Limit Control Upper Threshold 3.5 V VS+ = 0 V, VSCMP = 0 V CURRENT SHARE CAPTURE VSCMP = 3.5 V. Current Share Capture Range 0.7 1 1.3 % Reg 10h[5:4] = 00. See Table 25. 1.4 2 2.6 % Reg 10h[5:4] = 01. See Table 25. 2.1 3 3.9 % Reg 10h[5:4] = 10. See Table 25. 2.8 4 5.2 % Reg 10h[5:4] = 11. See Table 25. Capture Threshold 0.6 1.0 1.4 V FET OR GATE DRIVE Open-drain N-channel FET Output Low Level (On) 0.4 V IIO = 5 mA 0.8 V IIO = 10 mA Output Leakage Current −5 +5 µA REVERSE VOLTAGE COMPARATOR, FS, FD VCS− = FS Common-Mode Range 0.25 2.0 VDD – 2 V Voltage set by CS resistor divider Voltage on CS− pin. TA = 25°C. |
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