IQD launched the IQCM-200, a disciplined OCXO, incorporating sync to a 1 PPS (pulse per second) input as well as a 1 PPS output. The IQCM-200 is part of a series of disciplined OCXOs available from IQD. This particular model is the smallest sized OCXO capable of achieving a holdover capability of 1.5µs over 24 […]
Products
What’s the difference between equalizers?
Equalizers are used to alter the performance of signal chains. In some cases, that means linearizing signal chain performance. In other cases, equalizers are used to introduce nonlinearities. As a result, equalizer designs vary widely from simple passive circuits to complex multi-stage designs and active circuits. This FAQ reviews equalizer basics, looks at equalizers for […]
What’s a logarithmic resistor ladder good for?
A logarithmic resistor ladder consists of a resistor string and switches designed to attenuate a signal. The state of the switches can be considered to represent a digital code proportional to the logarithm of the attenuation ratio. Logarithmic attenuation is useful when a large dynamic range is needed. Audio volume control and fading/balancing audio signals […]
Where do you use A, B, AB, D, G, DG and H circuits?
This selection of power amplifier classes is used to strengthen AC signals. The letter symbols differentiate between amplifier types and indicate the expected performance and characteristics. Basic amplifier classes such as A, B, AB, and C relate to the time that the amplifier is operating, or conducting, expressed as a fraction of the period of […]
Discrete diodes feature super-small package size/footprint
ROHM Semiconductor announced the addition of 14 new models to their PMDE package (2.5mm × 1.3mm) lineup – meeting the requirements for smaller protection and switching circuits (RBxx8 Series, RFN Series, VS Series). Diodes are used for rectification, protection, and switching circuits in a wide range of applications such as automotive, industrial, and consumer fields. Additionally, there […]
When is a high CMRR needed in an op amp?
Common mode rejection ratio (CMRR), also called common mode rejection (CMR), quantifies the ability of an operational amplifier (op amp) to reject common-mode signals. Common-mode signals are signals that appear simultaneously and in phase on both inputs. This FAQ begins by defining what CMRR is and how it’s quantified, reviews some design considerations related to […]
What is PSRR and why is it important in op amps and LDOs?
The power supply rejection ratio (PSRR) describes the ability of a circuit to suppress any power supply variations from passing to its output signal and is typically measured in dB. It’s most often used with operational amplifiers (op amps), dc/dc converters, linear regulators, and low drop out regulators (LDOs). For op amps, the PSRR describes […]
MLCCs handle 150℃ for automotive apps
Samsung Electro-Mechanics announced on the 11th that it has developed 13 types of automotive MLCCs with guaranteed use in a 150℃ environment with plans to supply them to global auto parts manufacturers. High-reliability automotive MLCCs with guaranteed use at 150℃ have been produced only by some companies, but with this development, Samsung Electro-Mechanics will step up […]
SP4T DC-6-GHz switch delivers high-power for RF applications
Menlo Micro has introduced a new single-pole/four-throw (SP4T) DC-to-6 GHz switch that provides best-in-class performance, reliability, and integration for 5G network infrastructure, test and measurement equipment, and other high-power RF switching applications. Built on Menlo Micro’s market-proven Ideal Switch technology, the MM5140 SP4T switch offers 25W power handling, ultra-low insertion loss, and the industry’s highest linearity, […]
Thick-film resistors feature high temperature stability
Commercial and industrial power electronics increasingly demand robust power supplies with high stability and low thermal resistance. For these requirements, standard chip resistors may not be the best solution. Wide terminal chip resistors, such as Stackpole’s RMCW, provide terminations on the long sides of the chip to provide better current handling and thermal resistance. The […]
