Instruments Incorporated Current Source With Voltage References www.ti.com 3.2 Current Sourcing With the LM4041-N TI’s LM4041-N ADJ is a preferred design in current sourcing because the feedback voltage on FB is with respect to CATHODE unlike the ATL431LI. This allows the LM4041-N ADJ in current source configuration to have the I be independent of I . The benefit of the LM4041-N ADJ over the ATL431LI is the higher accuracy and OUT KA simplified schematic. V CC RS LM4041-N ADJ IOUT ✁ V REF/ R S IKA R 1 Figure 3-3. Current Sourcing with the LM4041-N ADJ • R 1 Input bias resistor
