i am working for weighing scale project and my MC have i2c supported but i can't find load cell amplifier with i2c output, so can you please let me know, ti have release such a loadcell amplifier with i2c output.

thank you

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AMC1301: AMC1301 Output Common-Mode Voltage

April 11, 2019, 10:35 pm

≫ Next: OPA340: Operational test & studies

≪ Previous: there is available on load cell Amplifier with i2c output

Part Number:AMC1301

Hi,

I am confused about the AMC1301 Output Common-Mode Voltage. in the datasheet, Figure 39 indicates it is around 1.4V, while Figure 52 indicates the output is internally biased to a common-mode voltage of 2 V.

Based on tina silumation, it is 1.4V, so what does 2V stand for?

thanks a lot.

Yang

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OPA340: Operational test & studies

April 11, 2019, 11:24 pm

≫ Next: DRV2700EVM-HV500: How to change to 1000V output

≪ Previous: AMC1301: AMC1301 Output Common-Mode Voltage

Part Number:OPA340

Hi,

I'm planning to test out OPA340 (SOT23) using the DIYAMPEVM, may I know what functionality test I should take in order to better understand the device? Thanks.

Regards,

Leo

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DRV2700EVM-HV500: How to change to 1000V output

April 12, 2019, 1:23 am

≫ Next: INA303: Motor current detection

≪ Previous: OPA340: Operational test & studies

Part Number:DRV2700EVM-HV500

Dear Specialists,

My customer is considering DRV2700 and has a question.

I would be grateful if you could advise.

---

I am considering DRV2700 1000V output by using DRV2700EVM-HV500.

Could you please let me know how to change.

---

I appreciate your great help in advance.

Best regards,

Shinichi

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INA303: Motor current detection

April 12, 2019, 2:37 am

≫ Next: THS3491: about the output capacitance and stability

≪ Previous: DRV2700EVM-HV500: How to change to 1000V output

Part Number:INA303

I'm referring SBOA171B.

In this note, low-side sensing with INA303 is introduced.

Regarding to detection for motor current, I concern impact of noise.

Should not we need consider the input filter for INA303?

Could you please tell me if there is recommended filter example?

BestRegards

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THS3491: about the output capacitance and stability

April 12, 2019, 3:22 am

≫ Next: OPA2187: Output Current vs Supply Voltaage

≪ Previous: INA303: Motor current detection

Part Number:THS3491

Hi Dear expert,

My customer used THS3491 and they need to add a capacitor at the output which causes the loop stability issue. Below is the schematic, V+ connects to 10V reference voltage, V- is the input signal. Vs- connects to GND, Vs+ connects to 30V.

They add a 10pf cap at the ouput side and found amplifier is self oscillated. I suggest them to add resistor before cap to improve the stability issue, while it will impact the output gain and efficiency.

IS there any other way to solve the self oscillation?

Below is the EVM design. What is the function of C4? C6 is not NC. Will the layout also impact the stability?

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OPA2187: Output Current vs Supply Voltaage

April 12, 2019, 9:52 am

≫ Next: LMV824-N: Opamp configuration

≪ Previous: THS3491: about the output capacitance and stability

Part Number:OPA2187

We have been using the OPA2197 in several applications that require good input specs, rail-rail output, 30V supply, and input common mode range that includes 0V.

In a new application, the Iq of the OPA2197 is too much (1.0mA Typical). The OPA2187 would work. Its Iq is 0.1mA Typical. However, I can't tell what the output drive current characteristics are.

See Fig 10 below. What does it mean? The similar figure for the OPA2197 makes sense. Can you explain the output current drive capability of the OPA2187?

By the way, my output load is a series RC. R = 1k, C = 1uF.

Thanks,

Richard

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LMV824-N: Opamp configuration

April 13, 2019, 2:57 am

≫ Next: OPA2674: High-output-current opamp that can drive large 300pF load at 60MHz bandwidth

≪ Previous: OPA2187: Output Current vs Supply Voltaage

Part Number:LMV824-N

Hello,

I am new to analog electronics,i am confused that which opamp configuration is used in shown image,

Please guide me about it.

Kind regards,

Mit shah

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OPA2674: High-output-current opamp that can drive large 300pF load at 60MHz bandwidth

April 13, 2019, 9:13 pm

≫ Next: TLV2371: TLV2371

≪ Previous: LMV824-N: Opamp configuration

Part Number:OPA2674

To whom it may concern,

I would like a recommendation of an opamp product that can provide 500mA peak current and is stable under capacitive load of 300pF.

Basically, the load is a current source that can pull a peak current of 500mA in parallel with an equivalent capacitor of 300pF.

The bandwidth should be around 60MHz.

Typically opamp requires a series damping resistor at the output (like OPA2674) for large capacitive load, but if the load needs to pull continuous current at the same time, this series resistor would create a large voltage drop.

I wonder if there is a product that can drive capacitive load and provide high output current at the same time, without a series resistor.

Thank you.

Weiyu

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TLV2371: TLV2371

April 13, 2019, 1:41 pm

≫ Next: OPA2364: OPA2364

≪ Previous: OPA2674: High-output-current opamp that can drive large 300pF load at 60MHz bandwidth

Part Number:TLV2371

Hi,

We are using TLV2371DBVR opamp in our design.

I would like to know if the Output of the Op-Amp can withstand ESD test according to IEC 16000-4-2 standard, which is +/- 4000V Contact charge and +/- 8000V Air Discharge. Output of the Op-Amp directly connected to pin without any components in series or parallel.

What will be the way to protected Output of the Op-Amp or is there Different Op-Amp Certified with IEC 16000-4-2 Standard?

Jitsu Patel.

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OPA2364: OPA2364

April 13, 2019, 1:44 pm

≫ Next: TINA/Spice/THS3491: THS3491 TINA model name is misspelled

≪ Previous: TLV2371: TLV2371

Part Number:OPA2364

Hi,

We are using OPA2364 opamp in our design.

What will be the way to protected Output of the Op-Amp or is there Different Op-Amp Certified with IEC 16000-4-2 Standard?

Jitsu Patel.

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TINA/Spice/THS3491: THS3491 TINA model name is misspelled

April 14, 2019, 6:54 am

≫ Next: OPA197: ROHS-3, EU/2015/863

≪ Previous: OPA2364: OPA2364

Part Number:THS3491

Tool/software:TINA-TI or Spice Models

Good morning

Sadly, my email server appears to be down - normally I would just email this to the right person (Hermann or John). But, instead

I notice again the Model name for the THS3491 shows instead "THD3491" . Easy to miss that with the focus on Total Harmonic Distortion (THD).

However, the part and model should be THS3491. Easy to fix I would think.

↧

OPA197: ROHS-3, EU/2015/863

April 14, 2019, 5:49 pm

≫ Next: TLV4172: V-(GND) of Absoulte Maximum rating

≪ Previous: TINA/Spice/THS3491: THS3491 TINA model name is misspelled

Part Number:OPA197

Hi team,

My customer would like to confirm that whether OPA197IDBVR compliance to ROHS-3, EU/2015/863.

While, datasheet package information describes that TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances(22-Feb-2018).

Therefore OPA197IDBVR compliance to ROHS-3, EU/2015/863.

Is this understanding correct?

Best regards,

Shota Mago

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TLV4172: V-(GND) of Absoulte Maximum rating

April 14, 2019, 6:01 pm

≫ Next: XTR116: Noise calculation

≪ Previous: OPA197: ROHS-3, EU/2015/863

Part Number:TLV4172

Hi all

Would you mind if we ask LM2902?

How much is V-(GND) of Absoulte Maximum rating?
Is it possible to add 0.8V to GND?
We assume that the range is -20V to +0.3V.

Kind regards,

Hirotaka Matsumoto

↧

XTR116: Noise calculation

April 14, 2019, 6:56 pm

≫ Next: LM7301: About LM7301 Max Tj

≪ Previous: TLV4172: V-(GND) of Absoulte Maximum rating

Part Number:XTR116

Hi,

Noise is specified 0.6uVpp on the datasheet.

How much does this contribute to output current noise?

I would like to know the equation to calculate it.

Best Regards,

Kuramochi

↧

LM7301: About LM7301 Max Tj

April 14, 2019, 8:04 pm

≫ Next: TINA/Spice/OPA2189: OPA2189 BPF design

≪ Previous: XTR116: Noise calculation

Part Number:LM7301

hi dear supporting team,

how about the max operating Tj of LM7301? from 85degree TA, it seems Tj could not exceed 100 degree. customer is operating at 8V, they normally get 96degree case temp. and the highest case temp could get to 110degree. is it ok? tks a lot!

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TINA/Spice/OPA2189: OPA2189 BPF design

April 14, 2019, 8:58 pm

≫ Next: INA303-Q1: INA303-Q1 sample and RTM plan

≪ Previous: LM7301: About LM7301 Max Tj

Part Number:OPA2189

Tool/software:TINA-TI or Spice Models

Hi Sir,

The following are BPF requirements and please provide TINA simulation. Thank you.

1. 25KHz BPF

-opamp power supply 5/-5V or +15/-15V

-input 5V 25KHz square wave

-BPF BW: 1KHz

-filter order: 8

-ripple: 1dB

-stopband attenuation: -35dB at least

-25KHz phase: 0 degree

2. 60Hz BPF

-opamp power supply 5/-5V or +20/-20V

-input 5V 60Hz square wave

-BPF BW: 20Hz

-filter order: 8

-ripple: 1dB

-stopband attenuation: -35dB at least

-60Hz phase: 0 degree

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