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  • LM4140: Stability issue

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    Part Number: LM4140 I'm using the LM4140 ACM -1.0 as a voltage reference for some current shunt amplifiers and the ADC converter. Input voltage is 3.3V(from an TLV70033 LDO with a 10uF cap output and threw a ferried bead, this rail is clean), input…
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  • LM4140: Application with Temperature sensors

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    Part Number: LM4140 Other Parts Discussed in Thread: LM4040 Hello, I'm looking to build an interface circuit for a temperature sensor, probably a thermocouple with a 1k or 10kohm resistor. I found this application note: regarding the use of this voltage…
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  • LM4140: Question about Vout drop

    TI Thinks Resolved
    Part Number: LM4140 Other Parts Discussed in Thread: TL431 Although customer want to make 7.5Vin to 3.8Vout for LM4041CEM3X-ADJ, attached simulation results was less than 2Vout. I think that current is enough (IRMIN(max.)<60uＡ), but actual measure was less…

  • LM4140 / other voltages or tempco's

    Other Parts Discussed in Thread: LM4140 Dear e2e, in the Datasheet for the LM4140 it states: ======================================= The LM4140 is available in three grades (A, B, C) with 0.1% initial accuracy and 3, 6 and 10 ppm/°C temperature coefficients…

  • ADC128D818: Question regarding VREF bypass requirements.

    TI Thinks Resolved
    Part Number: ADC128D818 Other Parts Discussed in Thread: LM4140 Datasheet question regarding bypass caps for the adc128d818 VREF - in the adc128d818 datasheet it states 1) on page 4 it states "ADC128D818 allows two choices for sourcing VREF: internal or…
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  • LPV821: Suitable op amp for voltage reference using REF5020

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    Part Number: LPV821 Other Parts Discussed in Thread: ADS1219 , REF5020 , , OPA320 , OPA388 , OPA350 , LMP91000 , OPA2378 , OPA2335 , LMP2232 , TLV2262 , OPA2336 , OPA2340 , OPA2320 , LMP2012 , OPA2328 , OPA335 , LM4140 , OPA2187 Hi I have designed the circuit below based…
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  • ADS1256: Help with the design and questions.

    TI Thinks Resolved
    Part Number: ADS1256 Hello, For our tests we use the ADS1256EVM connected to a microcontroller. We would like to measure as precisely as possible a signal witch can vary between 1.024 and 2.048 volts. In order to measure this signal we have connected…
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  • Is there a industiral temp part similar to LM4140 that has low drift?

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    Other Parts Discussed in Thread: LM4140 Have been recopmmended the REF50xx or LM4140 family for low drift voltage regulators for a ADC. Looks like the LM4140 will not work as it is not industrial temp. external voltage Reference care abouts: Low drift over…
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  • is one lm4140 is enough for 4 lmp90080

    Other Parts Discussed in Thread: LM4140 , LMP90080 Hi, I am using 4 lmp90080 to measure 16 channel temperature using themocouple. For Vref I want to use lm4140. My doubt is that one lm4140 is enough for 4 lmp90080 or i have to use 4 lm4140 is required…
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  • Analog frontend circuit for 4-wire RTD

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    Other Parts Discussed in Thread: ADS1247 , ADS124S08 , REF200 , LMP2011 , LM4140 , INA317 , TLV333 Hi, I'm looking for PT100 frontend analog circuit ICs for -10C to 140C temperature measurements. Can you suggest on ICs? Precision current source Mux: 2:…
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