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| LM431 (TL431) 0.1-10 Hz Vp-p noise. |
| << < (5/5) |
| GigaJoe:
assuming both bandgap type , lm4140 - consumed 0.2 mA ; it series , I assume fraction to bandgap feeding tl431 - can be 0.4 mA to 0.6mA - i assume higher current for bandgap. AS431 (diodes) - 1mA lm4140 noise as 2.2uV p-p defined for lowest 1.024 Vout and it less then native bandgap voltage output tl431 - 2.5V out and 2X bandgap as well 2X internal noise of bandgap may i guess - level of current consumption may indirectly define noise output ? btw , comparing lm4140 noise with output 1.024 ,and something else with output 5V , would be incorrect , as per 4140 5V out actual Vp-p = 2.2 X (5 / 1.024) |
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