PGA280
I have a board with a PGA280. The Analog supply is connected to +/-12V, VSop = 5V, DVdd = 3.3V.I'm currently using the power on Reset values for all the settings (1/8V, 1:1, etc).InN1 is connected to...
View ArticlePGA 308 alternate, sensor signal conditioning
I have been using PGA 308 for few of my projects for sensor signal conditioning but was wondering is this the low cost solution that TI offer for sensor signal conditioning. is there any alternate that...
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PGA281 noise rectification
Hello, I seem to be having a problem with noise rectification with the PGA281; it seems like any noise past 100kHz gets rectified into a DC bias, which makes it impossible to filter out. It's not...
View ArticleXTR110 Failure
Hello there.I need some help in troubleshooting a problem we are having with the XTR110 V to I Transmitter.We are experiencing repeated failures in Production of an XTR110 current source.This design...
View ArticleXTR108EVM-USB Manual Calibration
Hi,My customer is testing the XTR108EVM-USB.They are missing "First Correction" as Tutorial on P36 STEP3.http://www.tij.co.jp/jp/lit/ug/sbou123/sbou123.pdfWhen they push "Set RTD Emulator to Minimum...
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LM319 - output voltage
Hi all,Would you mind if we ask LM319 output voltage?About following circuit, the value of output voltage is max4.28V. (It is 5-0.7V)So, we guess that this voltage drop is caused by R12=13kΩ in the...
View ArticlePGA309 and PT100/1000 calibration data for EEPROM
Hello gentlemen,I'm trying to bring to life PGA309 Evaluation Module PGA309EVM-USB that I have just boght and I'd like to know if you (by any chance) don't have EEPROM calibration data for PT100 or...
View ArticleOPA2172 & OPA2192
When will the OPA2172 and OPA2192 be available for purchase or sample?
View ArticleTIPD135 output drop after a few minutes of measurement
Hi,I ordered two TIPD135 PCBs and performed some test measurements. Both work fine for several minutes of measurements,but the output drops after 2 to 5 minutes of measurements.That happens also if I...
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Load cell amplifier (INA111 + OPA)
Hi,I want to amplify the signal from a load cell for dynamic applications, and I need a overall gain of 1000. The problem is that the signal frequency I'm interested in may go up to 1 MHz. I figured...
View ArticleLMP91000 Datasheet
Hello there,I hope to get some information about the lmp91000 from somebody who used this AFE already.As I looked in the datasheet and read "Cell Current Condition up 10 mA". I ask myself what is that...
View Articlewill TLV4112 work by 2.5V power supply
hello,I am going to drive TLV4112 by TPS780300250DRV, set to 2.5V output. will TLV4112 work safe at 2.5V power supply, does it need any margin at the low side of the specification.thanks,David Sun
View ArticlePGA308 interface with microcontroller
Hello Experts,I have been using PGA308 in simulation mode by interfacing with microcontroller which would also allow multiple calibration rather than 4 banks OTP. so far using 5V operated...
View Articleopen-loop gain vs. closed-loop gain in TIA
Hello,I got a simple sounding question I am just not able to find an answer for, so feel free to help me:Can the closed-loop gain of an OpAmp exceed the open-loop gain? My first intuition told me no.I...
View ArticleThe Pin Functions table(+INB,-INB) of LM8272 datasheet is a mistake.
HelloFrom the following customer, it has a question.niclass@mosk.tytlabs.co.jphttp://www.tytlabs.com/Hello there, There's a mistake in the pin assignment of LM8272 on page 5 of its datasheet. There's a...
View ArticleAMC1100 Vout with VDD1 removal
I am using the AMC1100 circuit from the datasheet Figure 31 (although it’s single-ended voltage mode, but otherwise the same) to monitor a 28V input.When VDD1 goes to zero, we are wanting to see Vout...
View ArticleSimulate noise rejection of LMP2022 opamp circuit
I am building high accuracy current sense circuit using LMP2022 Opamp but i am having trouble getting an accurate simulation of common mode rejection circuit using TINA. -Do i have to build a special...
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txr110 1v to 5v to 4 -20ma
i already make a connection as suggested..my vcc supply is 24v ....and input voltage is 5v.... but the output current i got is only 2.5ma??? but in that simulation that ur team given..it gave the...
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OPA170 spice model syntax error
Hi TII have downloaded the TINA-TI spice model for OPA170 for use in Altium designer.Unfortunately, when I try to run my simulation I get the following error.Is there a way to correct or omit...
View ArticleXTR110KP undesired output
I am making a 0-5V to 4-20 mA converter.I bought this IC and just for trial made the same circuit givein under Applications in the datasheet (0-10V to 4-20mA).However the circuit gives varying current...
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