ROHM announced the availability of a two-channel, high-speed, ground sense CMOS operational amplifier (op-amp), BD77502FVM, optimized for consumer and industrial equipment requiring high-speed sensings – such as industrial measurement and control systems. The proliferation of the Internet of Things (IoT) in recent years has led to a significant increase in the number of electronic components used for […]
Amplifiers
Designing a DAC-controlled, high-side constant current source
by KlausST, supermoderator on EDABoard.com Here I’d like to show how to design a DAC controlled high -side constant current source. Since it is often used as 0..20mA (or 4..20mA) current loop interface, we will focus on the interface requirements. * low speed ( maybe some 10Hz up to some kHz) * high precision * […]
Dual 5-V op amp sports 50-MHz gain-bandwidth, low input offset voltage, 6.5 nV/√Hz input voltage noise
STMicroelectronics’ TSV792 dual 5V operational amplifier (op-amp) combines 50MHz gain-bandwidth with precision attributes including low input offset voltage and extremely low input voltage noise of just 6.5nV/√Hz. The typical 50MHz gain-bandwidth product enables accurate amplification of high-frequency signals. Adding a fast slew rate of 30V/µs, the TSV792 is suited to photodiode-signal conditioning in battery-powered smoke detectors. […]
LNA offers 15-dB typ gain over up to 170 GHz
For the emerging number of millimeter-wave applications above 100 GHz, the model ITI-110-170-15-6 low-noise amplifier (LNA) from Impulse Technologies offers 15-dB typical gain over the wide frequency range of 110 to 170 GHz. It features a typical noise figure of 6 dB over that high-frequency range. The broadband LNA is equipped with UG-387 as the […]
Advanced IC integrates instrumentation amp, auto-trimming, digital pots, analog switches
Dialog Semiconductor plc announced the SLG47004, Dialog’s first Advanced Analog GreenPAK IC. The SLG47004 integrates an instrumentation amplifier with auto-trimming, digital pots, analog switches, and a myriad of digital functions with in-system programmability in a small 3mm x 3mm solution size allowing designers to create simulate and prototype their own unique sophisticated analog ICs in […]
The RF power amplifier, Part 1: Functions
In the RF signal chain, the power amplifier (PA) is the active element located between the transmitter signal chain circuitry and the antenna, Figure 1. It is often a single discrete component, one with requirements and parameters which differ from those of much of the transmit chain as well as the receiver circuitry. This FAQ […]
Class D audio, Gallium-Nitride versus Silicon – Virtual Roundtable (part 2 of 2)
In this second part of EEWorld’s “virtual roundtable” discussion on Class D audio, our panelists delve into the impact that the emergence of gallium-nitride (GaN) is having on Class D designs: Where are silicon devices still dominant? What are the performance benefits of using GaN in Class D amplifiers? And what are the anticipated future […]
Class D audio technology and applications – Virtual Roundtable (part 1 of 2)
The first part of EEWorld’s two-part “virtual roundtable” discussion on Class D audio considers technical challenges and design trade-offs for engineers using Class D audio technology. Joining us for this virtual roundtable are: Joshua LeMaire (JL), Audio Systems Architect at Analog Devices; Steve Colino (SC), Vice President Strategic Technical Sales with Efficient Power Conversion; and […]
Sound design considerations for Class D amps
The first two FAQs in this series, “Class D Amplifiers for High-Efficiency Switched-Mode Sound” and “Class D Audio – Why Now?” focused on basic Class D amplifier topologies, modulation techniques, general component and technology advancements that have made Class D amplifiers an increasingly viable option, and the evolving tradeoffs between silicon and GaN power devices. […]
Class D audio – Why now?
Class D amplifiers were first proposed in the 1950s. Why have they only recently been gaining more widespread popularity? The answer involves several factors: There were no switching transistors that met the performance demands of Class D amplifiers until the 1980s. And it was not until the mid-1990s that Class D integrated circuits became available. […]
