As consumers increasingly turn to their phone’s internal speakers to enjoy music, podcasts, movies and gaming, Cirrus Logic has introduced its newest flagship CS35L45 boosted amplifier for a richer, more immersive audio experience from smartphones, tablets and mobile gaming devices. Cirrus Logic’s CS35L45 smart power amp delivers higher excursion for high-peak loudness, improved dynamic range […]
Amplifiers
What is the difference between current feedback and voltage feedback op amps?
Current feedback (CFB) operational amplifiers (op amps) and voltage feedback (VFB) op amps have almost as many similarities as differences. CFBs and VFBs both have inverting and non-inverting inputs, a signal output, inputs for positive and negative voltage supplies and use feedback and gain resistors to stabilize circuit operation and set circuit gain. That can […]
Two-channel, high-speed op amps feature slew rates to 10V/µs
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 […]
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 […]
