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MCP6C26 датащи(PDF) 21 Page - Microchip Technology |
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MCP6C26 датащи(HTML) 21 Page - Microchip Technology |
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21 / 37 page ![]() 2024 Microchip Technology Inc. and its subsidiaries DS20006928A-page 23 MCP6C26 4.0 DEVICE OPERATION This chapter includes additional information on basic operations and major functions. 4.1 Basic Performance 4.1.1 IDEAL PERFORMANCE Figure 4-1 shows the basic circuit; inputs, supplies and output. When the inputs (VIP, VIM, VDD, VSS and VREF) and output (VOUT) are in their specified ranges, and the part is nearly ideal, the output voltage is: EQUATION 4-1: FIGURE 4-1: Basic Circuit. For normal operation, keep: •VCM between VCML and VCMH •VDM between VDML and VDMH •VREF between VRL and VRH •VOUT between 0.1V to VDD – 0.1V, usually VOL and VOH are hard limits 4.1.2 ANALOG ARCHITECTURE Figure 4-2 shows the block diagram for these current sense amplifiers. FIGURE 4-2: MCP6C26 Block Diagram. 4.1.3 DC PERFORMANCE 4.1.3.1 DC Voltage Errors Section 1.5, Explanation of DC Error Specifications covers some DC specifications. The input offset error (with temperature coefficients), gain error and nonlinearities are discussed in detail. VOUT VREF GDMVDM + Where: GDM = Differential-Mode Gain VREF = Output Reference Voltage VDM = Differential-Mode Input (VIP –VIM) + – VSS VREF VDD VIP VOUT VIM + VOUT + – VSS VREF VDD VIM VIP R1 R2 R4 R3 |
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