LMP8100 Datasheet | National Semiconductor

.. - LMP8100 Evaluation Board User Guide - LMP8100 Evaluation Board User Guide This evaluation board contains the LMP8100, along with a logic circuit to program the register in the LMP8100. National Semiconductor Application Note 1626 Mike Stout July 2007 Hardware Setup REGISTER PROGRAMMING SETUP 1. To use the on-board logic circuit to program the LMP8100 Register connect the jumpers as follows: JP1 - Pins 2 and 3 JP2 - Pins 2 and 3 JP3 - Pins 2 and 3 2. To use an external microcontroller to program the LMP8100 Register connect the jumpers as follows: JP1 - Pins 1 and 2 JP2 - Pins 1 and 2 JP3 - Pins 1 and 2 Connect the external microcontroller to J3. POWER SUPPLY SETUP 1. +5V Supply Connect the jumper as follows: JP4 - GND and the center pin Connect a +5V supply to the V+ and GND banana plugs. 2. ±2.5V Supply Connect the jumper as follows: JP4 - V- and the center pin Connect a +2.5V supply to the V+ banana plug, a - 2.5V supply to the V- banana plug, and supply grounds to the GND banana plug. GRT PIN SETUP 1. To connect the GRT pin to ground Connect the jumpers as follows: JP5 - GND and the center pin JP6 - GND and the center pin 2. To connect the GRT pin to a Low-Impedance Source Connect the jumpers as follows: JP5 - DC and the center pin JP6 - V+ and the center pin 3. To connect the GRT pin to an AC ground Connect the jumpers as follows: JP5 - AC GND and the center pin JP6 - GND and the center pin PONENTS Various loads can be installed on the eval board. The series resistance at R8 can be changed or replaced by a jumper. The resistive load at R4 can be changed. An AC coupled load can be added by using C24 and R9. A capacitive load can be added at C4. The eval board with a jumper at R8 has between 6 and 7 p F of parasitic capacitance. Connectors, Jumpers, Test Points POWER SUPPLY There are three banana plugs labeled GND, V+, and V- to power the eval board. A single supply of +5V or a dual supply of ±2.5V can be used. SIGNAL CONNECTORS There...