Hello:
LMH13000RQE Evaluation test circuit:
Spec calculation formula
Estimate based on formula
Iout Test Results:
The test results of the development board are different from the calculation formula.
Is there a problem with the circuit wiring method or design parameters, or is the development board damaged?
你好,具體問題描述如下:
測試線路如下:
規格書公式列表:
依照規格書公式代入整理後之估算值:
MODE 0低電流狀況下
當Vset=0.1V =>Iout(total)=0.055A
當Vset=0.3V=I>out(total)=0.155A
實際測試結果:
MODE 0低電流情況下:
輸入電源各別為3.3V&5V狀況下
AVDD&PVDD為3.3V,單端輸入2V直流偏壓
當Vset=0.1V =>Iout(total)=0.11A
當Vset=0.3V=I>out(total)=0.20A
AVDD&PVDD為5V,單端輸入3V直流偏壓
當Vset=0.1V =>Iout(total)=0.16A
當Vset=0.3V=I>out(total)=0.24A
實際量測與公式計算結果有差異
想請問是測試電路有誤還是驗證開發板可能損壞?
相关问题，请参考下面帖子的回复：
(+) LMH13000RQEEVM: LMH13000RQEEVM RSET - 放大器论坛 - 放大器 - E2E
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