opamp K153UD5 - datasheet [solved] - uA725, now what to build?

[RoGeorge]

Found a couple of K153UD5 op-amps while digging through the inventory, NOS, looking like these:
https://pentod.com/product/4895/k153ud5-pecision-low-noise-op-amp-gold-ussr.html.en

Its cross-reference seems to be LM725, and the datasheet for LM725 is available online.  However, I couldn't find any datasheet for the K153UD5 itself.

Anybody can link or attach the datasheet for K153UD5, please?

[wraper]

Here

[ataradov]

Here is manufacturer's datasheet in Russian.

Edit: Seems to be the same as wraper posted, just a different formatting.

[RoGeorge]

Thank you very much. 

Great that the text can be selected, and not an image scan, so it can translate it with Google. 

[Vovk_Z]

Google may make mistakes in translating technical terminology, so feel free to ask questions.

[RoGeorge]

You are too kind, thank you.  Didn't translate it yesterday, because the datasheet mentions uA725, so downloaded the datasheet for uA725 and read that one instead.  However, you made me curious, and gave translate.google.com a try this morning.  Attached is the En pdf returned.  No idea how accurate the translation is.  Did Google translated it good enough?

Searched a little more today about uA725, and found out (at page 59 of 970 in http://www.miedema.dyndns.org/co/2018/Op_Amp_Applications_Handbook-Walt-Jung_2005.pdf)

In 1969 Marv Rudin and Garth Wilson formed Precision Monolithics Incorporated
(PMI), a brand new company with a charter of precision linear ICs. PMI introduced their
counter to the 108A, the OP08, in 1976. This wasn't simply a second source to the 108A,
but a revised and upgraded design by George Erdi and Larry Farnsley. Erdi was known as
the father of the Fairchild μA725 (and the SSS725, at PMI). Erdi came to PMI in 1969,
from Fairchild, where he had already established some key op amp design concepts (see
narrative on 725 to OP07).

In the same pdf, it's an entire chapter describing the internals of the uA725 opamp, wow!
"Precision Bipolar IC Op Amps— μA725 to the OP07 families" starting at page 61 of 970.


The question now is what to build with low noise, low drift, precision opamps like uA725? 

[iMo]

Send it to Noopy.. 

[Vovk_Z]

Напряжение смещения нуля - Input Offset Voltage
Макс. вых. напряж. - Output Voltage Swing
Средний входной ток - Average Input Offset Current
Разность входных токов - Input Bias Current
Коэф. усиления напр. -  Voltage Gain
Коэф. ослаб. синфазных входных напр - Common-Mode Rejection Ratio
Коэф. влияния нестабильности источ. питания на напр. смещения - Power Supply Rejection Ratio
Средний температур дрейф напряжения смещ. нуля - Average Voltage Drift
Средний темпер. дрейф разносности входн. токов - Input Bias Current Drift
***
ABSOLUTE MAXIMUM RATINGS
Синфазное входное напряжение, В - Common Mode Input Voltage, V

[Vovk_Z]

The question now is what to build with low noise, low drift, precision opamps like UA725? 

- anything that can be built with e.g. OP07, or any other typical precision opamp.

[David Hess]

The question now is what to build with low noise, low drift, precision opamps like UA725? 

- anything that can be built with e.g. OP07, or any other typical precision opamp.

Exactly, the uA725 is the precursor to the OP07, or really the OP05 which is an untrimmed OP07, and is suitable for the same applications.  Note that using the external offset voltage adjustment on this parts simultaneously trims the offset voltage drift.

The external compensation of the uA725 allows some things that modern parts do not support.  Its external compensation allows tailoring its frequency response, and the compensation pin can also be used to clamp its output.

[RoGeorge]

Very important for cross reference replacements, the key for the metal-can Russian opamps marks pin 1, while for the western opamps the key marks pin 8.

BTW, found something useful to build for the lab (with these opamps):  Power amplifier for the signal generator. 
https://www.eevblog.com/forum/projects/precision-opamp-power-stage-to-increase-v-and-i-out/