OPA2340: Operating temperature range

Hi Jorgen,

There is a fundamental difference between Specified and Operating temperature range.  The parametric max/min limits apply only to Specified temp range from -40C to 85 C (see datasheet for test condition column) while Operating temp range from -55C to 125C means that OPA2340 will work as expected like an op amp but its performance may not meet the specified max/min limits.
Btw, Absolute Maximum Rating table does not say anything about specific performance of the part.  All it tells you is at what point you may cause the part to be damaged. 

Hi Jorgen,

OPA340/OPA2340's datasheet specification and performance are specified from -40C to 85C, which these performances are guaranteed. However, the op amp is able to operate from -55C to +125C, where some of the performance figures may go outside or deviate from -40C to 85C specified range. 

If the customer's operating temperature requirements are critical outside of -40C to 85C, you may consider to choose alternative parts, depending on the design requirements. Else, this part may be suitable for such application that is operating within -40C to 85C range, say 90-95% of an end application usages. For instance, Vos and temperature drift performance may deviate or increase as Tamb operating temperature goes beyond 85C, and other parameters may have similar temperature effects (the op amp is using CMOS technology).

If you have other questions, please let me know. 

Best,

Raymond