LMH13000RQEEVM: LMH13000RQEEVM RSET

Part Number: LMH13000RQEEVM

Hello,According to the suggestion:"datasheet 19 page “The VSET voltage is applied using a DAC through a 20kΩ series resistor."

As shown below

test circuit :

 

Correction Problem Description

Test Circuit Setting conditions:

single-ended input;DC bias 2V/AVDD 3.3V

(PD = 0);(MODE = 0);(RBIAS=1);Low-Current Mode

The iout current is also locked and cannot be controlled by VSET,VSET'' voltage is locked 2.1V

Is there a problem with the circuit wiring method or design parameters, or is the development board damaged?