JFET cascode boosts current-source performance
02.22.2018 · Circuits
Many process-control sensors, such as thermistors and strain-gauge bridges, require accurate bias currents. By adding a single current-setting resistor you can configure voltage-reference circuit to produce a constant and accurate current source...
Toshiba adds power amplifier IC adopting pure MOS for car audio
02.22.2018 · News
Toshiba Electronics Europe has added a new high sound quality, low distortion, surface mount product, to its line-up of 4-channel power ICs for automotive applications. The new TCB001FNG is based upon a pure complementary MOS process that is derived from Toshiba’s car audio IC research and development and reduces cost...
Make sure your optocoupler is properly biased
02.21.2018 · Articles
In isolated power supplies, optocouplers pass the feedback signal across the isolation boundary. Optocouplers contain both a light-emitting diode and a photo detector. Current flowing through the LED results in a proportional current flowing in the photo detector...
35V Hot Swappable Supercapacitor Backup Power Controller Provides Uninterrupted Power, Protection & Monitoring
02.21.2018 · News
Analog Devices announces the Power by Linear LTC3351, a supercapacitor charger and backup power controller IC that includes hot swap front-end protection and all the features necessary to provide a complete, standalone capacitor-based backup power solution...
Toshiba Releases Medium Voltage, High Current Photorelay in Small Package
02.21.2018 · News
Toshiba Electronics Europe has announced the launch of a new photorelay in a small 2.54SOP4 package that is just 2.1 mm high with a 2.54 mm pitch. Fabricated using the latest U-MOS VIII trench MOSFET process, the new TLP3145 combines an off-state output terminal voltage of 200 V with a controllable on-state current of up to 0.4 A continuously or 1.2 A when pulsed...
Supercapacitor-Based Power Backup Prevents Data Loss in RAID Systems
02.20.2018 · Circuits
Redundant arrays of independent disks, or RAID, systems, by nature are designed to preserve data in the face of adverse circumstances. One example is power failure, thereby threatening data that is temporarily stored in volatile memory. To protect this data, many systems incorporate a battery-based power backup that supplies short-term power – enough watt-seconds for the RAID controller to write volatile data to nonvolatile memory...
Advanced Battery Management System by Maxim Enables a Safer, Smarter Car of the Future
02.20.2018 · News
Automotive OEMs can enhance the safety of their lithium-ion battery packs with robust communications, comprehensive diagnostics, and lower system costs with the MAX17843 12-channel, high-voltage smart sensor data-acquisition device from Maxim Integrated Products...
Pulse generator has low top-side aberrations
02.19.2018 · Circuits
Impulse-response and rise-time testing often require a fast-rise-time source with a high degree of pulse purity. These parameters are difficult to achieve simultaneously, particularly at subnanosecond speeds. The circuit derived from oscilloscope calibrators meets the speed and purity criteria...
Microprocessor Supervisory Circuit from Diodes Incorporated Monitors System Voltage with Programmable Delay
02.19.2018 · News
Diodes Incorporated announced the PT7M3808 family of microprocessor supervisory circuits. These devices monitor system voltages from 0.4 V to 5.0 V, and feature threshold accuracy from 0.5% and an adjustable delay time from 1.25 ms to 10 ms...
Use two PicoGate devices for bidirectional level-shifting
02.16.2018 · Circuits
In new mixed-voltage systems, it is often necessary to level-shift a control signal from a high level to a low level. An open-drain device, such as the 74LVC2G07, easily performs this shift. However, when a bidirectional signal requires level-shifting, it takes a bit more circuitry...