MCP6241U-E/OT MCP6241UT MCP6241UT-E/LT MCP6241UT-E/OT MCP6241UT-E/OT BHGB MCP6241UT-E/OT 运放IC MCP6241UT-E/OTG MCP6241UT-E/OTVAO MCP6242 MCP6242E