The latest Electronics Weekly product news on analogue, linear and mixed-signal ICs.
Toshiba has introduced a 40V/3.0A stepper-motor control IC that requires no external current-sense resistors. The TB67S508FTG stepper-motor controller has on-chip current sensing. As a result it can eliminate the effects of resistor-tolerance errors, ensuring greater accuracy (+/-5%) and uniformity, says the supplier. The transistors of the output bridge have very low on-resistance of 0.45Ω (typical, high-side + low-side). The device ...
Linear Technology, now part of Analog Devices, has launched the LTC2358-18, an 18-bit, 8-channel simultaneous sampling SAR ADC featuring integrated picoamp input buffers. The LTC2358-18 from Linear Technology, now part of Analog Devices, saves board space by eliminating front end signal conditioning circuitry normally required to drive unbuffered switched-capacitor ADC inputs. The combined component savings of three amplifiers, six resistors and two capacitors ...
A 32-bit successive approximation register (SAR) analogue-to-digital converter with dual outputs and digital filters to optimise signal bandwidth has been introduced by Linear Technology, now owned by Analog Devices. The LTC2500-32 provides a digitally filtered output that achieves up to 148dB of dynamic range as well as a no latency output comprising an over-range detection bit, a 24-bit representation of ...
How to avoid amplifier output driver saturation when using very low bias current amplifiers with high source impedance sensors, write Jon Munson and Kevin Scott When taking sensor measurements, the type of sensor excitation used typically varies greatly. It can be a DC signal, an AC signal, a voltage source, a current source or a pulsed source, to name a ...
Analog Devices has announced hardware for learning about analogue circuits and software-defined radio. USB-powered and controlled, ADALM2000 Active Learning Module includes: two analog differential inputs, two analog single-ended outputs, and two power supplies. 12bit 100Msample/s DACs and ADCs provide the digital interface, and once coupled with the firm’s Scopy software running on a computer (Windows, Linux or OS X), the ...
TI combines a modified chopper architecture with a proprietary input for an op-amp whose precision extends to common-mode signals anywhere within its power rails.
Linear Technology introduces a dual channel mixer which has integrated programmable variable gain IF amplifiers.
A dual precision op amp from STMicroelectronics is designed to have a low and temperature-stable input-offset voltage. The TSZ182 op amp has a chopper-stabilised design and a 3MHz gain-bandwidth. The offset voltage of 25µV at 25°C is designed for high measurement resolution and accuracy without external trimming components. Offset drift is specified by the supplier at less than 100nV/°C. The ...
Engineers at the University of Bristol have developed a three terminal pico-power chip that can cut stand-by drain in sensor nodes
Rohm Semiconductor has developed an evaluation kit for motor driver devices which is designed as a ‘shield’ to plug directly into the Arduino open source board. There different versions of the kit for the supplier’s various stepper motor driver ICs– from standard, micro step, low voltage to high voltage. It covers supply voltages from 8V to 42V, enables up to 2.5A per phase, as well as micro-stepping ...
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