Question about REF194

Question

Hi All, 
 REF194 has a current sink spec into the OUTPUT pin? If it has, what is the maximum sink current? 
 Best Regards, 
 Kazu

FormerMember · Accepted Answer

No. See figure 20 on the data sheet. The resistor divider is very high (>100k), so it will sink microamps. 
 The REF19x family was designed to be micropower, so if you need to sink you will have to buffer with 
 an op amp. 
 Harry)

FormerMember · Answer

Kazu-san, 
 Some of the other refs will source 10-15 mA min, and sink 5 mA min, but I don't know of any refs that 
 will sink/source 30 mA. Maybe an AD8615 would work as a buffer; it depends on how close you 
 want to get to the rails. There might be another way to do a clamp. 
 Harry

FormerMember · Answer

??? Just connect it as a follower? 
 Harry

EZAdministrator · Answer

This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

Thank you,
EZ Admin

Partner Forums

Partner Libraries

Products Mentioned

Question about REF194