Part Number: OPA4227 This is Joong-hyeok Lee, DMSMS researcher of Leoinnovision. Leoinnovision is the official EOL(End Of-Life)/obsolescence part manager of Korean Military (Army, Navy, Air force) and PLM agency of many defense industries (Hanwha, ADD…
Other Parts Discussed in Thread: OPA4227 , OPA4188 We designed a circuit using two OPA4227 chips powered at +/- 15 V. The circuit diagram is as attached (U1-U4: OPA1, U5-U8: OPA2). We found both chips generated a lot of heat which caused significant drifts…
Other Parts Discussed in Thread: OPA4227 , OPA4209 What are the main difference including the internal designing of the ICs between the OPA4227 and OPA4209?
We had checked the performance of both the ICs by doing simulations but found that both give the…
Part Number: OPA37 Other Parts Discussed in Thread: OPA4227 , OPA4228 Hi TI expert
Please help to find a 4 channel amp and similar with OPA37.
Best regards,
Thomas
Hi Yordan,
the OPA4228 is a decompensated version of the OPA4227 and is very much faster than the OPA4227. But the OPA4228 can only be used with a gain greater than 5. Theoretically, you could replace the first OPAmp in the circuit (U3 in my last simulation…
Hi Shekhar,
Since you are indeed using the OPA4227 there is the issue of the much higher power dissipation that I previously mentioned. Certainly, that device will get hotter than the OPA4277.
Otherwise, I don't really see anything about your circuit…
I have had an error and the operational one is not the opa4277, it is the opa4227. The opa4227 has a Quiescent Current very high, but even so it is normal to reach high temperatures? or is a heatsink necessary?
The customer said if he uses OPA4227 to replace OPA4140, the output voltage will only move 100mV. But if he uses OPA4140, the output voltage will move 1V.
