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LM193QML: Component Mass

August 26, 2019, 11:08 am
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Part Number: LM193QML

What is the mass of this component?

Thanks.

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INA209: Programming GPIO

August 26, 2019, 3:55 pm
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Part Number: INA209

Hello,

I am new to circuit design and I am having trouble finding information on how to program the behaviour of the GPIO pin on the INA209.  All I need the device to do is to set the GPIO pin high once the input power reaches above a specified threshold and keep the pin high until the power drops below another threshold (Schmitt Trigger style).  The two power levels will be approximately an order of magnitude apart (~20 mW and ~600 mW) so resolution is not a major issue.  I was wondering if anyone could tell me the circuit connections needed to program the chip and the device needed to convert the code from USB into something the chip can use.

I would also like to know whether or not the chip's registers are volatile. 

Thank you,

CR

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LM2903-Q1: Question if this device operates like normally when VCC=0V

August 26, 2019, 6:48 pm
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Part Number: LM2903-Q1

Hello all,

Is it possible for LM2903-Q1 to operate when VCC=GND=0V and input differential voltage at IN+ or IN-? In the TINA-TI, it seems to output as normal operation when VCC=GND. Does this device possibly work by leakage when output impedance is very high?

Thanks,
RYO

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TLV2186: EMIRR IN+ Value

August 26, 2019, 8:04 pm
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Part Number: TLV2186

Hi,

Could you please tell me which value of the following "Figure 40" and "Table2" is correct regarding EMIRR IN+ ?

Best regards,
Kato

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TLV2474A: Maximum temperature coefficient of input offset voltage

August 26, 2019, 8:59 pm
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Part Number: TLV2474A

Hi Team, we have a customer that wants to confirm if there is a maximum temperature coefficient of input offset voltage. It is found on the datasheet that the value is only at typical. 

Hoping for your clarification.

Thank you in advance.

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OPA857EVM-978: Setting the Module Into Test Mode and Conducting Frequency Tests

August 26, 2019, 9:01 pm
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Part Number: OPA857EVM-978

I have the module in my possession and am currently trying to figure out how to get the module into test mode.

The instructions aren't clear on setting the module into Test Mode and do not give an indication of HOW an input voltage relates to a signal frequency of a photodiode. I have attempted to set it into Test Mode by:

1) Setting the +VCC banana jack to 3.3V

2) Setting the Test_SD to +VCC by use of the pins covers provided.

3) Connected a DC bias of 2.3V to the J1 Test_In SMA connector with the use of a BNA to SMA adapter.

4) Monitoring the output via another SMA to BNA adaptor to an oscilloscope.

Assistance will be appreciated, as a step by step instruction to make sure I am operating it correctly. I get NO visible on the oscilloscope.

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opamp Schmitt trigger with RC network-Data Slicer

August 26, 2019, 10:05 pm
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Dear Team,

Could you please explain how the attached schematic works.

I need to design a data slicer circuit as shown in Figure 5 of attached file.May I know how to calculate the component valus escpecially the RC circuit.

(Please visit the site to view this file)

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INA181-Q1: Distribution data of Vos and Eg

August 26, 2019, 11:01 pm
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Part Number: INA181-Q1

Hello Team,

I'm Yuta Kurimoto TIJ FAE.

Q. Can you share the distribution data of Vos(Input offset voltage) in the past 3 month?

Q. Can you share the distribution data of Eg(Gain error) in the past 3 month?

I know the Fig.2 and Fig.12 but customer want to know the distribution in past 3 months.

Thanks,

Yuta Kurimoto

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THS6301: THS6301 for VDSL2-35b

August 26, 2019, 11:26 pm
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Part Number: THS6301

Hi,

Could you please provide the MTPR measurement results based on 1:2 transformer, 12.5 ohms feed resistors, PAR of 5.6, VDSL2-35b, line power 14.5dBm

 

Warm Regards,

Lin 

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TAS2562H

August 27, 2019, 12:30 am
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LMV344: used as simple comparator

August 27, 2019, 12:59 am
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Part Number: LMV344

Hi,

I used a LMV344 circuit as a basic non-inverting comparator without hysteresis. Sometimes, I observe oscillations at the output of the circuit. The oscillations occur during the commutation phases and are they are maintained at steady state. The circuit is découpled through a bypass capacitor of 100nF. The bypass capacitor is near the circuit.

Can you help me understand why the oscillations occur.

Thanks for your help,

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TLV7031: Noninverting Comparator With Hysteresis for TLV703x

August 27, 2019, 1:58 am
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Part Number: TLV7031

Hi Team,

I tried to design a non-inverting comparator using TLV7031. My Vh is 3V and Vl is 2.4V and Hysteresis is 600mv.

Let me explain how I approach the problem. From the datasheet, Hysteresis is given in equation no (6). I know my hysteresis so I fixed R1 and I found R2.

Put this value of R1 and R2 in eq (4) to find my Vref. May I know the approach is correct or not.

According to my simulation results are not proper .

http://www.ti.com/lit/ds/symlink/tlv7031.pdf(Please visit the site to view this file)Please find the attached simulation file.

Regards

Hari

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OPA855: DSFEVM

August 27, 2019, 4:44 am
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Part Number: OPA855

I am looking for OP855 photodiodes and avalanche diode circuit plan.

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LMV982-N: TINA Model

August 27, 2019, 6:01 am
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Part Number: LMV982-N

Hi Team,

My Customer is looking for the TINA Model of LMV982-N do we have this model?

Appreciate your inputs.

Regards,

-Renan

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INA186: Lifting power supply towards V+ (TINA-TI unexpected result)

August 27, 2019, 6:24 am
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Part Number: INA186

Hi,

I want to measure current of a 24V supply. Pin Vs of INA186 is connected to 24V and GND is 19V (generated by a zener). I would expect no differences in the results as the common mode voltage (around +5V) and the supply (+5V) requirements are met.

However, TINA-TI shows differences in the simulations (see below). Is there a problem with the simulation or is this expected behavior?

Thanks,
Lars

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PGA204: PGA204AU : land pattern for SOIC (DW) 16

August 27, 2019, 8:06 am
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OPA462: Power Amplifier with 170Vpp & 2A capability

August 27, 2019, 10:22 am
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Part Number: OPA462

Customer is looking for Power Operational Amplifier with Power Bandwidth of 170 Vp-p @ Minimum 1MHz and Maximum Steady state current (within SOA) of +/- 2A.

OPA462 meets most of the specs except output current.

Do you have any other recommendation for customer specs ?

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LM358: Voltage Offset Drift on Transimpedance Amplifier

August 27, 2019, 2:43 pm
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Part Number: LM358

Hello All,

I have been using an LM358 in a standard transimpedance configuration to measure the response of a photodiode. My reading of the datasheet gives the offset voltage drift of 7μV/°C and the gain is rather high 106 (Rf is 1MOhm), which I calculate would result in a drift on the outset on the order of a few 100mV to Vs on the output. However, measuring the actual drift yields a much lower number – about 1mV/°C . Am I missing something in my analysis why the drift effect is lower than expected, or compensated for in someway? Did I just get lucky with a drift value on my specific OpAmp that’s well below the typical value?

Any help or advice you could give would be appreciated.

Thank you

Jeff

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TAS2562H- Update 2

August 27, 2019, 6:45 pm
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INA333： INA333 ECG

August 27, 2019, 8:44 pm
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Part Number: INA333

The circuit was tested according to the figure above. The ECG signal can not be detect.But the interference signal of 50HZ can be detected by Oscilloscope.Can you give the relevant information of the circuit to me? Is there any improvement to the circuit?

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