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OPA567 单电源负电压工作,散热焊盘怎么接?

Other Parts Discussed in Thread: OPA567

OPA567 单电压负电压工作,散热焊盘怎么接?接GND还是V-?

问题:1、散热焊盘悬空,静电电流不稳定(0-200mA变化);

           2、散热焊盘接GND,静电电流异常(100-200mA);

           3、散热焊盘接V-,发现V-(-5V)电压被拉低到0V。

功能:恒流源(参考datasheet典型设计)

我的原理图如下