Quantcast
Channel: Amplifiers forum - Recent Threads
Viewing all 19115 articles
Browse latest View live
↧

AMP-PDK-EVM: CE/EU Declaration of Conformity (aka EU DoC) required

January 20, 2025, 10:41 am
$
0
0
Part Number: AMP-PDK-EVM

Tool/software:

Hi

The request is actually for SKU AMP-PDK-SOT23-6 (but this part was coming up as "unrecognised in the Part Number field).

Could you please confirm SKU  AMP-PDK-SOT23-6 is CE ad if YES, please provide the CE/EU Declaration of Conformity (EU DoC)?

We could not find the CE/EU Declaration for this part on your website. We found it for another similar part (SKU AMP-PDK-TSSOP-14) but not for AMP-PDK-SOT23-6.

Thank you in advance

↧
Search

INA271-HT: INA271SKGD1

January 20, 2025, 12:40 pm
$
0
0
Part Number: INA271-HT

Tool/software:

. We use this part in die form--INA271SKGD1 / the part is rated at 200° but we are seeing lots of failures at 162° / >.6 mA . I need this information ASAP.

It may also be important to mention that the units are working fine at ambient, but fail during the 160 degree C thermal test. The analog signal is measuring higher than what it should be outputting. We are comparing the measured current with a DMM. We are putting the unit through 160 degrees C with 4mA - 6 mA of current. The analog output of the failed ICs report 8mA-12.5mA when at the previously mentioned temperature after 8-48 hour heat soak. Very few units report the correct current after this test

↧
↧

OPA2140: Higher frequency and lower noise version opamp

January 20, 2025, 4:45 pm
$
0
0
Part Number: OPA2140
Other Parts Discussed in Thread: OPA2828

Tool/software:

Hi experts,

Could you pick up some recomended opamps which have higher frequency and lower noise than OPA2140 as a replacement?
My first thought is OPA2828.

It is really helpful if you tell me several option.

Thanks,

Hiromu

↧

INA149: INA149 Simulation Model Inquiry

January 20, 2025, 5:14 pm
$
0
0
Part Number: INA149

Tool/software:

I received the INA149 simulation model from the web and ran it.
The offset voltage is listed as 350uV in the datasheet as a typical value.
The result is 50uV for the TINA model and 60uV for the PSpice model.
There is a big difference from the typical value of 350uV in the datasheet.
Please check.

↧

THS4131: Single ended to Differential

January 20, 2025, 8:51 pm
$
0
0
Part Number: THS4131

Tool/software:

I am using Single ended to Differential opamp for this part number THS4131IDGNR, I need Spice model for THS4131IDGNR. Kindly provide.

↧
↧

TLV387: Pin function table does not match with the figure shown pinout in DBV Package, 5-Pin SOT-23

January 20, 2025, 9:38 pm
$
0
0
Part Number: TLV387

Tool/software:

There is error in the Pin function table as it shows 6 pin for a 5 pin package part also it swaps the inverting & non inverting terminal pin numbers.

The figure that shows pinout for DBV Package, 5-Pin SOT-23 seems to be correct .

Please correct the datasheet for this part & confirm which pinout to be followed Figure or table.

↧

THS4131: Single ended to Differential

January 20, 2025, 10:17 pm
$
0
0
Part Number: THS4131

Tool/software:

I am using Single ended to Differential opamp for this part number THS4131IDGNR, Vin = 3.3V, Vout = +/-15V I want Schematic for this part number THS4131IDGNR.

↧

LOG200: LOG200 with unipolar power supply(5V)

January 20, 2025, 11:08 pm
$
0
0
Part Number: LOG200

Tool/software:

Hi team,

Is it possible for LOG200 to work with unipolar power supply(5V)?

Best regards,

Shunsuke Yamamoto

↧
Search

LM2903B-Q1: Can I use 5V as VCC for this IC?

January 21, 2025, 12:20 am
$
0
0
Part Number: LM2903B-Q1
Other Parts Discussed in Thread: LM393LV-Q1

Tool/software:

Hello, I am a circuit designer.I have a question about LM2903B-Q1

The VCC reference Voltage seems to be 15V, but I need to connect a 5V power supply.Since there is an error rate even at 5V, the voltage value can definitely go down further, but how much can it go down?When I simulate it, it seems to not work from 4.5V.Is that right?I wonder what the minimum is.

thanks

↧
↧

TL081H: Pin name different

January 21, 2025, 12:22 am
$
0
0
Part Number: TL081H

Tool/software:

Hi Team

my customer find below IC pin name is different. could you help me check which one is correct? and do you have any plan to fix datasheet?

BRs

Brian

↧

LMH5401: LMH5401: Output Vcm adjustable circuit

January 21, 2025, 1:43 am
$
0
0
Part Number: LMH5401

Tool/software:

Hi：

I hope to use LMH5401 to design a circuit with adjustable VCM output.
The working voltage of LMH5401 : VCC = 3.15V , VEE = -2.14V
It is hoped that the VCM output will be in the following range： [-500mV  500mV]
Single ended output voltage swing: 1 Vpp

I tried to simulate it with TINA, and the function was OK. 

I wonder if the actual operation of the circuit will be consistent with the simulation. 

Hope experts give advice！
Thanks！

e2e.ti.com/.../LMH5401_5F00_20250121.TSC

↧

OPA192: Differential Input Impedance Typ: 100MOhm || 1.6pF

January 21, 2025, 1:46 am
$
0
0
Part Number: OPA192

Tool/software:

From all the information about the used input stage configuration i assume:

1. It is a complementary PMOS+NMOS differential stage with somewhat harsh bias current transition over the common-mode voltage range

2. It contain ESD diodes from each input to both V+ or V-

3. Because there are no input differential protection diodes i assume that the gate-oxide must be still internal protected by a special circuit

4. This special circuit is decoupling the sources of each PMOS or NMOS differential pair so that the Vgs is not the full supply

The final question is that i assume that a complementary PMOS+NMOS differential stage with ESD diodes still have a very high differential input impedance but not 100MOhm. Is the 100MOhm a typo or the result of this special circuit? In closed loop operation the differential voltage is small where the 100MOhm also result in pA or less current. But  for 36V it is a significant 360nA. Please clearify.

↧

TLV9141: application circuit review

January 21, 2025, 5:26 am
$
0
0
Part Number: TLV9141

Tool/software:

Hi team,

Could you help check the circuit is work or NOT? Thanks 

The customer wants to use voltage division to supply power to OP and then use voltage follower to create 10V to control some circuits.

↧
↧

INA238: Python Driver for INA238

January 21, 2025, 6:17 am
$
0
0
Part Number: INA238

Tool/software:

Does anyone ever use a python-Driver for the current sensor ina238?  I have found in GitHub a Library , address: GSI-HPC/py-ina238: TI INA238 Driver
i have installt this Lib to my Raspberry Pi wirh the code: 

pip install ina238

But it seems that it doesn't work. it shows:

.venv/lib/python3.11/site-packages/ti/__init__.py", line 6, in <module>
 import ina238

ModuleNotFoundError: No module named 'ina238'

How can i correctly install and use this Lib? or is there any other Lib?

↧

AMC0330S-Q1: Design help assistance for +/-5V Earth-to-Neutral

January 21, 2025, 6:28 am
$
0
0
Part Number: AMC0330S-Q1

Tool/software:

Hi Experts,

Customer is looking for a device to measure earth-to-neutral voltage (max: 5V, AC), this will go to his ESP32 MCU.

Found the chip: AMC0330S-Q1

Can you confirm if this will be feasible on this design? Also, what value of resistors to use in the input for the expected range of signal to measure?

Regards,
Archie A.

↧
Search

AMC1400: Can i use AMC1400 for AC voltage sensing?

January 21, 2025, 6:33 am
$
0
0
Part Number: AMC1400

Tool/software:

Hello TI

Is it safe to use AMC1400 for AC voltage sensing? Will it give satisfactory results? If it can be used, can you please provide design guidelines to implement AMC1400 for AC voltage sensing?

↧

AMC0311D: Accuracy

January 21, 2025, 11:37 am
$
0
0
Part Number: AMC0311D
Other Parts Discussed in Thread: ADS127L18

Tool/software:

Hi TI Team

I have tested the AMC0311D vs the AMC1311B with the help of the ADS127L18 EVAL Board. And I get better results from the AMC0311D like lower noise, offset and linearity. I tested 5 AMC1311B and 5 AMC0311D and I use the sinc3 50Hz filter in my ADS127L18. Is the data sheet of the AMC0311D still preliminary and electrical characteristics are not final or is it because I have the PAMC0311D version which is slightly better than the final product?

Thank you in advance.

Regards Theo 

↧
↧

TL081: TL081CDR

January 21, 2025, 4:43 pm
$
0
0

Part Number: TL081

Tool/software:

With Part Number: TL081CDR 

We have a suffering issue relating  PCN# 20220615003.1 . 

We know that this PCN change relates WAFER & FRAMEWORK & body making & Assembly site.

We're wondering if “Input offset adjustment N1,N2“ has no function withTL081CDR?

Since TL081CD replaced with TL081CDR,base on TT circuit diagram , no matter how to adjust R38,there’s no output voltage change with TACHO+ ~ TACHO+ . (R37
=5.1kohm or 1.5k ohm ).
................................

............................................................ ........................  ...........

↧

TLV07: Some samples show unexpected output result

January 21, 2025, 6:40 pm
$
0
0
Part Number: TLV07

Tool/software:

Hi,

My customer observed unexpected output on some TLV07 samples.

* Some samples show large "remaining voltage" and will converge after certain time.
On the other hands, Almost samples show small "ramaining voltage".

We would like to know root cause of this issue.
I attached files which show "overview" and "detail" for our issue. Please confirm it and could you give your feedback ?

Best Regards,

e2e.ti.com/.../Unexpected-behavior-on-TLV07.pdf

↧

LOG200: Would like to estimate the temperature drift of the output of log amp

January 21, 2025, 7:57 pm
$
0
0
Part Number: LOG200

Tool/software:

Hi team,

1. May I know how to estimate the temperature drift of the output of log amp? My customer would like to estimate it.

2. May I know if we have the min/max value of scaling factor of log amp?

Best regards,

Shunsuke Yamamoto

↧
Viewing all 19115 articles
Browse latest View live
Search