Microchip Technology MCP6N16, User Manual

Page: 16 / 36

MCP6N16 Evaluation Board User’s Guide
DS50002365A-page 16

2015 Microchip Technology Inc.
2.3 BASIC CONFIGURATIONS
The following sections present various configurations supported by the MCP6N16
Evaluation Board.
2.3.1 Out of the Box Setup
The setup for these boards when they are shipped is as follows:
• Gain = 101V/V
• External V
REF
Follow Step 1 through Step 4 to set up the evaluation board and get started (see
Figure 2-1 ):
1. Connect a +5.0V supply to J2: V
DUT
and GND.
2. Connect the inputs AIN+ and AIN- to an appropriate signal (e.g. 10 Hz sine wave,
10 mV
PP
).
3. Measure the DC voltage V
REF
at TP5 with a voltmeter: it is suggested to set this
to +2.5V (adjust with R23 if necessary) to level shift the output of the MCP6N16
centered between the supply rails.
4. Connect an oscilloscope to the output at either TP1 (V
OUT
) or J7 and observe the
output signal of the MCP6N16.
2.3.2 Test Points
Table 2-1 lists the test points and describes their functionality.
TABLE 2-1: TEST POINTS
Test Point
Comments
Ref. Des. Label I/O
TP1 VOUT1 O MCP6N16 filtered output signal voltage
TP2 AGND — Ground reference point (analog)
TP3 VDD O V
DD
(from the PIC
®
microcontroller) ( Note 1 )
TP4 VOUT2 O MCP6N16, filtered V
REF
signal voltage
TP5 VREF O Buffered and filtered reference voltage
TP6 — O Unbuffered reference voltage
TP7 — O MCP6N16 output before filter
Note 1:
Functional only when connected to PIC
®
device.