Are LM148J/883Q and LM148JB interchangeable? It has been difficult for me to make this determination since not all of these alpha numerics seem to show on the data sheet that comes up when searching the individual numbers.

I have been tasked with repairing OLD technology as well as developing tests and need to know which of the parts that I can find I will be able to use.

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THS4221: Simulating THS4221 in Tina-TI

February 13, 2019, 2:21 pm

≫ Next: LM2907-N: LM2907-N for 50Hz 60Hz detect

≪ Previous: LM148: LM148

Part Number:THS4221

Tool/software:TINA-TI or Spice Models

Hi,

I am doing a simple simulation using THS4221 as a comparator. Please see the schematic below:

Battery = 10V

VG1=Square wave at 1kHz switch between 0 to 5V

Voltage at V+ terminal of THS4221 stays in between 2.3V and 2.7V because resistors are set up for having a few millivolt of hysteresis for this comparator configuration.

The result says THS4221 is drawing 23A of current. What did I do wrong?

Thanks

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LM2907-N: LM2907-N for 50Hz 60Hz detect

February 13, 2019, 7:14 pm

≫ Next: DRV595: The DRV595 go to fault state

≪ Previous: TINA/Spice/THS4221: Simulating THS4221 in Tina-TI

Part Number:LM2907-N

Hi Team,

my customer is looking for 50Hz/60Hz detector for Fluorescent lamp flicker detection, I make proposal below and would like to check if LM2907-N is the right solution propose to customer? thanks

Eddie Chou

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DRV595: The DRV595 go to fault state

February 13, 2019, 9:34 pm

≫ Next: INA826: Is the RF filter an EMI filter

≪ Previous: LM2907-N: LM2907-N for 50Hz 60Hz detect

Part Number:DRV595

Hi team,

My customer use the DRV595 as a TEC driver.

Below is the schematic.

The purple means not install.

So after power on the device, they will use the MCU to pull the SDZ to high.

if the voltage between the IN+ and IN- is 1V, when the SDZ goes to high, the device will go into Fault state.

if the voltage between the IN+ and IN- is 0.5V, when the SDZ goes to high, the device works well, and then they also can change the voltage between IN+ and IN- to 1V.

Can you help to analyze if this is normal, and is there some limitation we need to take into consideration when pull up the SDZ pin?

Lacey

Thanks a lot!

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INA826: Is the RF filter an EMI filter

February 13, 2019, 11:05 pm

≫ Next: TINA/Spice/LP2902: LP2902 Ouput impedance

≪ Previous: DRV595: The DRV595 go to fault state

Part Number:INA826

Hello,

What is the purpose of the RF filter in this part and does it count as an EMI filter?

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TINA/Spice/LP2902: LP2902 Ouput impedance

February 14, 2019, 12:42 am

≫ Next: LM139-MIL: LM139-MIL Package

≪ Previous: INA826: Is the RF filter an EMI filter

Part Number:LP2902

Tool/software:TINA-TI or Spice Models

Hi Sir

Could you share output impedance at LP2902? Since I don't see it in spec. Thank you a lot.

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LM139-MIL: LM139-MIL Package

February 14, 2019, 3:06 am

≫ Next: INA193: Need delete a post

≪ Previous: TINA/Spice/LP2902: LP2902 Ouput impedance

Part Number:LM139-MIL

Dear All,

I've a question about LM139-MIL available packages.

In first page of datasheet there is a table reporting the available packages of component and there is also SOIC package, but I don't find the related orderable device p/n and the mechanical data of SOIC device.

My question: is LM139-MIL in SOIC case available?

Thanks in advance.

Best Regards

Stefano Scremin

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INA193: Need delete a post

February 14, 2019, 5:28 am

≫ Next: LMP8640: PSpice model

≪ Previous: LM139-MIL: LM139-MIL Package

Part Number:INA193

I have opened a thread for this part number. Can you delete it?

Please let me know,

Thanks

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LMP8640: PSpice model

February 14, 2019, 6:29 am

≫ Next: OPA192: Gain error calculation.

≪ Previous: INA193: Need delete a post

Part Number:LMP8640

Can you please provide the PSpice model for LMP8640? It has to be this specific part number - similar devices are not accepted by this customer.

Thank you!

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OPA192: Gain error calculation.

February 14, 2019, 6:46 am

≫ Next: OPA656: Table 7.6 Electrical Characteristics : +/-5V: High Grade DC Specifications

≪ Previous: LMP8640: PSpice model

Part Number:OPA192

Hello team,

My customer intend to use OPA192 as current monitor as attached schematic (gain=200V/V), in this design case, they want to know about the gain error accuracy looks like, can you advise the way of gain error calculation?

Very appreciate.

Martin

(Please visit the site to view this file)

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OPA656: Table 7.6 Electrical Characteristics : +/-5V: High Grade DC Specifications

February 14, 2019, 8:12 am

≫ Next: INA196: Output saturation issue

≪ Previous: OPA192: Gain error calculation.

Part Number:OPA656

Why does Table 7.6 Title indicate +/-5V? Other specs don't provide a voltage in the title/header, so are presumed to be be 4.5-5.5V. This may be obvious, but please confirm that the High Grade specifications are also over 4.5-5.5V, not just at 5.00V.

In Table 7.6, Input Offset voltage is specified under MIN. This should be MAX. Also units are incorrect, mA and dB mixed in Table 7.5.

Thanks

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INA196: Output saturation issue

February 14, 2019, 8:23 am

≫ Next: LMC6035: Output oscillation on LMC6035 with DC input and 1K load

≪ Previous: OPA656: Table 7.6 Electrical Characteristics : +/-5V: High Grade DC Specifications

Part Number:INA196

Hello,

I'm using INA196 to measure current flowing through the load as per attached picture. I have wide range of currents, so I use INA196 to measure very low currents and then I rely on measuring woltage drop over resistor bank I have in my circuit. I hoped that when my input voltage is more than INA196 is able to output (0.25V) the output will saturate at about 5V. Unfortunately, when input voltage to INA196 is in range between 2.6 and 8.2V the output goes to 0V. Above 8.2V it saturates at about 5V. What may be the reason of output voltage going to 0V in input voltage region 2.6-8.2V ?

Thanks,

Jacek.

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LMC6035: Output oscillation on LMC6035 with DC input and 1K load

February 14, 2019, 12:52 pm

≫ Next: ONET2591TA: Clarification on figures in datasheet

≪ Previous: INA196: Output saturation issue

Part Number:LMC6035

I am trying to utilize the LMC6035 as a non-inverting gain amplifier. I have the circuit seen below (bypass cap present in design but not shown). I have a stable 1V DC signal on pin 5 of the LMC6035, and I want a stable 5V output signal on pin 7 (i.e. net Y_I_FB). I am attempting to drive a simple resistive load, but I am getting large oscillations on the output. With the 1V input, and a 1K load resistor I am getting an output oscillation of 1V-5V at ~425 kHz

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ONET2591TA: Clarification on figures in datasheet

February 14, 2019, 12:55 pm

≫ Next: TLC2262: Can I have 0V output

≪ Previous: LMC6035: Output oscillation on LMC6035 with DC input and 1K load

Part Number:ONET2591TA

Hi Team,

My customer and I have some questions on the ONET2591TA that I'd like to get your clarification on:

We'd like to get a better understanding of the small signal transimpedance vs the transimpedance dependent on the average filtered bias current. How does small signal impedance change with respect to average bias current?
We are also assuming that Figures 10,11,12 and 13 are based on small signal transimpedance. Can you please confirm that this is correct?

Tying this to example eye diagrams (Figure 12/13) is a bit more confusing since 1mAppk -> 200mVppk suggests transimpedance of 200, 2mAppk -> 200mVppk suggests transimpedance of 100. The datasheet is not clear about how the gain is limited. Is gain limiting working here?
In figuring out the differential output mVpp, does Figure 5 matter here?

Small signal transimpedance (2000~3200ohm) * modulation current (I_input 1mApp) gives 2~3.2Vpp.This looks like the work of gain limiting, but then we are having trouble understanding why it has such a wide range of 140mVpp~310mVpp as MAX diff voltage.

Thanks,
Mitchell

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TLC2262: Can I have 0V output

February 14, 2019, 6:16 pm

≫ Next: LM2903: lm2903 PSRR ratings @ 10~20KHz region

≪ Previous: ONET2591TA: Clarification on figures in datasheet

Part Number:TLC2262

Hi all：

Can TLC2262 have 0V output in single power mode?Or do you need dual power to output 0V?

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LM2903: lm2903 PSRR ratings @ 10~20KHz region

February 14, 2019, 8:06 pm

≫ Next: TLV9064: Package size - SOIC package

≪ Previous: TLC2262: Can I have 0V output

Part Number:LM2903

Hi,

upon going through the datasheet, can't seem to find PSRR specs for the IC.

Is there a way to figure out if the part has any rejection at low frequencies, particularly between 10-20kHz region as our power supplies have ripples on it? Thanks.

Regards,

Leo

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