AM26C31: No load voltage variation

anson zhou

Part Number: AM26C31

Tool/software:

Hi Sir :

The output signal level amplitude of the 2025 version of chip AM26C31 reaches 4.95V under no-load, while the previous version had an amplitude of 4.2V-4.4V. May I ask where the change was caused?

9 months ago

0 Clemens Ladisch 9 months ago

Guru 321890 points

CMOS devices have rail-to-rail outputs. But I guess the old version had an additional diode.

0 BOBBY 9 months ago

TI__Guru* 79221 points

Hi Anson,

I'm not able to see the picture you uploaded but the newer device (with the new 300m wafer die) I believe uses a lower vforward schottky diode than the older design so it can drive closer to the rail than the old die design.

-Bobby

Interface

Interface forum

AM26C31: No load voltage variation