ON Semiconductor NCS2632, Руководство пользователя

Страница: 3 / 7

NCS2632DTBGEVB
http://onsemi.com
3
QUICK START PROCEDURE WITH DIFFERENTIAL SETUP
By default, each channel is set up in a differential
configuration with a gain of 2 V/V. Follow this procedure to
quickly get familiar with the evaluation board features.
1. Make sure that the VDD jumper and UVP
detection supply jumper are in place. Remove all
input jumpers to ground. Table 1 summarizes the
position of each switch and jumper.
2. Connect a 3.3 V supply between the VDD pin and
GND.
3. Set the EN switch to high to enable the IC. Check
the supply current. Verify that EN is high with a
multimeter, if necessary.
4. Use the voltmeter to measure the VSS pin. It
should measure near –VDD.
5. Apply a sine wave (f = 1 kHz, 1 V
pp
) across INLP
and INLM. Observe the waveform at OUTL.
6. Apply a sine wave (f = 1 kHz, 1 V
pp
) across INRP
and INRM. Observe the waveform at OUTR.
For more information and circuit examples refer to the
Application Information section in the data sheet.
Table 1. DEFAULT EVB CONFIGURATION − DIFFERENTIAL INPUT
Description Designator Pin State
Input-to-ground Jumper S3 INRP Open
S5 INLP Open
S7 INRM Open
S10 INLM Open
Supply Voltage Jumper S14 VDD Closed
UVP Detection Circuit Supply Jumper S12/S13 UVP Closed
Enable Switch SW1 EN High
Figure 3. Default Evaluation Board Schematic − Differential Input