sys_eng
Full Member level 4
I got a bandgap circuit for constant output of vref=550mV .
but i simulated , I don't get that, too much difference, I got 4.362 V output for vref and its not independent of supply voltage
what's wrong. It's nowhere near the ball park.
my actual circuit.
the current should be around 1.2uA
but my actual circuit is 100uA+, or near 200uA.
should I scale the transistor much smaller? I didnt' scale my transistor size in circuit so probably default to 100u.
but i simulated , I don't get that, too much difference, I got 4.362 V output for vref and its not independent of supply voltage
what's wrong. It's nowhere near the ball park.
my actual circuit.
the current should be around 1.2uA
but my actual circuit is 100uA+, or near 200uA.
should I scale the transistor much smaller? I didnt' scale my transistor size in circuit so probably default to 100u.
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