Circuits & Schematics Texas Instruments - 5

41. Double and invert 5 V to generate ±10 V using two generic chips and two bootstraps
    Stephen Woodward
    Circuits Analogue Design Supply Texas Instruments CD4053BE
    Integration of analog circuitry with digital logic often requires the addition of an extra supply rail or two. The excellent PSRR of precision op-amps (typically 100 dB) makes them unfussy about power rail variations. This simplifies power supply ...
    May 23, 2024
42. FET biasing targets battery-powered PWM applications
    Steve Franks
    Circuits Supply Texas Instruments TPA2010D1YEFT
    Many PWM (pulse-width-modulated) applications, such as Class D audio amplifiers, require symmetric drive circuitry. Comprising complementary N- and P-channel FET devices with gates and sources connected, the textbook CMOS pair in Figure 1 provides ...
    May 23, 2024

43. High-current, low-voltage shunt regulator
    Robert Buono
    Circuits Supply Texas Instruments TLV431
    This design idea describes a high-current (up to 8 A) shunt-regulator built around the TLV431 low-voltage, adjustable, precision shunt-regulator IC. Special attention was paid to implementing this design as a two-terminal circuit block, greatly ...
    May 16, 2024
44. Non-linear pullup for multi-rate I²C buses
    Christopher Paul
    Circuits Interfaces Microcontrollers Usage Texas Instruments SN74LVC2G66 SN74LVC74APWR TLV3202
    I 2 C is a popular bidirectional serial communications bus having a clock and a data line. Both line’s drivers consist of an open drain ground-referenced N-channel MOSFET with a pullup resistor connected to a supply ranging from 1.8 V to 5 V. ...
    May 13, 2024
45. Adaptable pullup
    Peter Demchenko
    Circuits Interfaces Texas Instruments TS5A3159
    It’s common for I 2 C systems to have both standard and fast devices on the same bus. For I 2 C systems, the speed and power consumption both depend on the values of pullup resistors: the values of them should be low enough to secure the fast ...
    Apr 24, 2024
46. A new and improved latching power switch. Part 2
    Circuits Supply Texas Instruments LM393 TLC393
    Although adequate for undemanding applications, the circuit suffers from several drawbacks which may limit its suitability. The Darlington’s current gain (which can vary considerably from device to device and with temperature) plays a ...
    Apr 5, 2024
47. 15-bit voltage-to-time ADC for "Proper Function" anemometer linearization
    Stephen Woodward
    Circuits Measurement Signal Processing, Filters Texas Instruments LMC555
    Awhile back I published a simple design idea for a thermal airspeed sensor based on a self-heated Darlington transistor pair (Ref, 1). The resulting sensor is simple, sensitive, and solid-state, but suffers from a radically nonlinear airspeed ...
    Apr 4, 2024
48. A new and improved latching power switch. Part 1
    Anthony Smith
    Circuits Supply Texas Instruments LM393 TLC393
    A previous Design Idea [ 1 ] outlined a relatively simple circuit in which a momentary pushbutton could be made to function like a latching, mechanical switch. The article generated a good deal of reader feedback. Amongst other comments, readers ...
    Mar 28, 2024
49. Supersized log-scale audio meter
    Nick Cornford
    Circuits Audio Measurement Texas Instruments TL084 LM385
    At the end of the DI for a Simple log-scale audio meter (Ref. 1), I promised to show how to upgrade it to work better. With these fixes, it now has near-digital performance, with faster response and smoother operation. Even this supersized version ...
    Mar 21, 2024
50. Efficient voltage doubler is made from generic CMOS inverters
    Stephen Woodward
    Circuits Supply Texas Instruments SN74AC14
    When a design needs auxiliary voltage rails and the associated current loads are modest, capacitor pump voltage multipliers are often the simplest, cheapest, and most efficient way to make them. The simplest of these is the diode pump voltage ...
    Mar 14, 2024

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