Texas Instruments TPS2661EVM, User Manual, Page: 6 / 32

Table 4-3. Jumper and LED Descriptions (continued)
Jumper Label Description
J15 Feedback gain selection
Jumper to select the feedback gain
1–2 Position sets gain of 4
2–3 Position sets gain of 2.5
J16, J18 Bias resistors Install to connect bias resistors on the signal lines
J17, J19 AGND_1 Install to connect signal return to the ground
J20 — Install to configure the device U3 as power supply protection for 2-wire transmitter
4.2 Test Equipment and Setup
4.2.1 Power Supplies
One dual polarity regulated power supply: +15 V : 0 V : –15 V, 500-mA current limit.
One source meter of 200 mA, 50-V rated
4.2.2 Meters
One DMM minimum needed.
4.2.3 Oscilloscope
A DPO2024 or equivalent, three 10 × voltage probes, and a DC current probe.
4.2.4 Loads
One decade resistance box or equivalent which can tolerate 50 V and capable of the output short.
General Configurations www.ti.com
6 TPS2661EVM: Evaluation Module for TPS2661x
Current-Loop Protector SLVUBX8B – OCTOBER 2020 – REVISED DECEMBER 2021
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