All Sections Texas Instruments - 2

11. Current converter performs purely on paltry phantom power
    Stephen Woodward
    Circuits Texas Instruments OPA2244
    Convert a 4-20 mA signal to 0-20 mA and deliver it to a grounded load with no additional power supply needed. Recently, EDN kindly published a design of mine for a micropower 4-20 to 0-20 mA current loop converter ( Ref. 1 ). Shortly thereafter, in ...
    Jul 23, 2026
12. Eight solar cell lithium-ion battery charger
    David A. Johnson
    Circuits Texas Instruments TLV2401 LMC7111
    Version 1 A single lithium ion battery cell needs 4.2 V from a current source to insure it is fully charged. A solar panel with just enough individual cells wired in series to produce the needed voltage would be more efficient than one with more ...
    Jul 16, 2026

13. Painlessly convert Hz to 4-20mA current loop
    Stephen Woodward
    Circuits Texas Instruments LM2917-N
    The iconic LM2917 tackles frequency-to-current conversion with (very) few externals. Almost exactly 50 years ago in June 1976, to be precise National Semiconductor introduced the LM29x7 series, offering deceptively simple monolithic solutions to a ...
    Jul 16, 2026
14. Solid state airflow sensor with linear 4-20mA output
    Stephen Woodward
    Circuits Texas Instruments LM7905 TLV2197
    A self-heated Darlington transistor pair makes a simple, sensitive, and sturdy airflow sensor. But first an annoying non-linearity needs unbending. If you take a self-heated transistor in a TO-92 package and force it to hold a constant temperature ...
    Jul 14, 2026
15. Tachometer frequency to 4-20mA loop current converter
    Jayapal Ramalingam
    Circuits Texas Instruments LM2907
    Converting frequency signals to loop current signals creates an economical result for process industry applications. Process industry applications commonly employ multiple motors. Their speeds are monitored by tachometers using magnetic pickups ...
    Jul 8, 2026
16. Position sensor gets linear 4 to 20mA current source output
    Stephen Woodward
    Circuits Texas Instruments SN74HC4066 TLV197-Q1 TLV9051
    A linearized output is a useful elaboration of a capacitive sensor design. But what if the circuit is located a significant distance from the control electronics? Recently, Design Ideas included a circuit ( Ref. 1 ) that comprised a simple analog ...
    Jul 8, 2026
17. Capacitive position sensor with linearized output
    Stephen Woodward
    Circuits Texas Instruments SN74HC4066 TLV9051
    An only slightly less simple followup circuit also ratios sensor capacitance to a reference capacitor to measure micrometers this time linearly. A few weeks ago, Design Ideas published a simple circuit of mine that provides an analog interface to ...
    Jun 25, 2026
18. Calibration, Part 2
    Aubrey Kagan
    Articles Texas Instruments LMP90100
    In my first blog about calibration [ 1 ], I discussed calibrating inputs using techniques that tolerated offsets by simply including them in the measurements. In this blog I will look at nullifying the offsets. The initial approach is to build in ...
    Jun 17, 2026
19. 4mA-20mA to 0mA-20mA converter's current mirror drives grounded load
    Stephen Woodward
    Circuits Texas Instruments TLV197-Q1 TLV431
    The ubiquity of the 4 to 20 mA current loop in analog process monitoring and control creates possibilities for peculiar designs of circuits for unusual accessory functions. Figure 1 shows an example. It does precision conversion of 4-20 mA to 0-20 ...
    Jun 15, 2026
20. TLV4197QPWRQ1 — Datasheet Texas Instruments
    Datasheets Texas Instruments TLV4197QPWRQ1
    

    Automotive, quad-channel, high-voltage, low-offset, rail-to-rail input output op amp in TSSOP-14 package The TLV197-Q1, TLV2197-Q1 and TLV4197-Q1 (TLVx197-Q1) family of devices are part of a new generation, of low-cost, 36-V, automotive-qualified, ...
    Jun 15, 2026

Sort by: relevance / date