Texas Instruments OPA521EVM, User Manual, Page: 5 / 15

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Overview
5 SBOU208 – June 2018
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OPA521EVM User's Guide
1.6 Jumpers
A brief description of the basic jumper functions is shown in Table 1 . More information can be found in
Section 3 .
Table 1. OPA521EVM Jumper Description
JUMPER DESCRIPTION
JMP1 (J5) Connects BNC input connector (J4) to AC coupled inverting input (-IN) of the OPA521
JMP2 (J3) 50-
Ω
termination when jumper is shorted
JMP3 (J10)
Device Enable pin has 3 options: Enable (EN), Disable (DIS), or using an external signal
generator (EXT) to toggle the pin.
JMP4 (J12) Setting current limit to maximum by grounding ILIM pin or setting limit with resistor R10.
JMP5 (J11)
Quiescent current select (active high, high configures the OPA521 to operate in FCC/ARIB
bands, low configures the OPA521 to operate in CENELEC Bands A, B, C, D)
JMP6 (J7) Bypass L1 when jumper is shorted
JMP7 (J9) Used to probe the AC coupled output of OPA521
1.7 LEDs
Table 2 explains how to interpret the LEDs when they are not illuminated. More details can be found in
Section 3 .
Table 2. LED Light Indicators
LED(s) DESCRIPTION
D4 (Tflag) Thermal limit warning flag (when tripped the LED light turns off)
D5 (Iflag) Current limit warning flag (when tripped the LED light turns off)