User manual

MCP6XXX Amplifier Evaluation Board 2 User’s Guide

The power supply voltage needs to be in the allowed range for the installed op amps.

Any of Microchip’s op amps that operate below 5.5V can be used. Moreover, the power

supply is protected by a zener diode with nominal voltage 6.2V and bypassed by a

1.0 µF capacitor. (See Figure 2-3: “Power Supply Block.”)

The mid-supply reference consists of a voltage divider and a buffer amplifier. (See

Figure 2-4: “Mid-supply Reference Block.”)

The resistors that are part of an amplifier are placed in pin sockets which are labeled.

All of the component labels on board keep consistent with those on schematic gener-

ated in the Mindi™ Amplifier Designer. The op amps are bypassed by 0.1 µF capacitors

and the single op amp U1 can have either a PDIP-8 or SOIC-8 package.

• PDIP-8 packages are inserted into the DIP-8 socket to the right of the U1 label.

• SOIC-8 packages can be accommodated; see Section 2.4.3 “Amplifier

Modifications Using 8-Pin SOIC Op Amps”.

The (surface mount) test points for power supply, ground, input signal and output signal

allow lab equipment to be connected to the board. The MCP6XXX Amplifier Evaluation

Board 2 top view is shown in Figure 2-2.

FIGURE 2-2: MCP6XXX Amplifier Evaluation Board 2 Top View.