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mixed-signal

What do you do with a bucket brigade device?

May 3, 2022 By Jeff Shepard

A bucket brigade device (BBD) is a discrete-time analog delay line using capacitors that has been replaced in most digital signal processing applications. But it continues to be used in some specialty applications such as guitar and audio sound effects and some types of sensors. It consists of a series of capacitance sections where a […]

Filed Under: Analog ICs, FAQ, Featured, mixed-signal Tagged With: FAQ

What’s a logarithmic resistor ladder good for?

May 2, 2022 By Jeff Shepard

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 […]

Filed Under: 5G, Analog ICs, Applications, attenuator, FAQ, Featured, mixed-signal, Products, Resistors, Telecommunications, Wireless Tagged With: FAQ

What causes noise in analog designs and how can it be controlled?

April 25, 2022 By Jeff Shepard

Controlling noise in analog and mixed-signal circuits is important but not simple. Data integrity is dependent on controlling noise in the signal chain. If left uncontrolled, noise can impair or disrupt system operation. This FAQ starts by looking at the various sources and types of noise, looks at how noise can enter the signal chain […]

Filed Under: Analog ICs, FAQ, Featured, mixed-signal Tagged With: FAQ

Squash 1/f noise with zero-drift amplifiers

August 11, 2021 By Bonnie Baker

There is a device that squashes all the 1/f voltage and current noise calculations with a chopper amplifier algorithm that corrects offset and drift characteristics. These amplifiers are zero-drift, auto-zero, or choppers that all achieve nanovolt-level offsets and extremely low offset drifts due to time and temperature. But back to our noise discussion, these devices […]

Filed Under: Amplifiers, FAQ, Featured, mixed-signal Tagged With: FAQ

Free-space optical links, Part 1: Principles

August 5, 2021 By Bill Schweber

free space optical links

Free-space optical links provide a reliable, cost-effective, and quick way to link two fixed communication nodes located a few kilometers apart. When engineers think of “optical data links” or “optical communications” they almost invariably think of light (visible or not) in an optical fiber carrying data at high rates for tens or even thousands of […]

Filed Under: FAQ, Featured, mixed-signal, optoelectronics, Telecommunications Tagged With: FAQ

What are the applications of 3D and 4D printed electronics?

August 5, 2021 By Jeff Shepard

3D printing is the fabrication of a three-dimensional object under computer control, with one or more materials being added layer by layer. 3D printing, or additive manufacturing, is used across various electronics applications, including circuit boards, energy storage devices, actuators, and sensors. It can be implemented using a variety of technologies, including selective laser sintering […]

Filed Under: FAQ, Featured, mixed-signal, PCB design Tagged With: FAQ

What is the difference between current feedback and voltage feedback op amps?

February 3, 2021 By Jeff Shepard

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 […]

Filed Under: Amplifiers, mixed-signal, Products Tagged With: FAQ

Two-wire, hall effect switches operate over -40 C to 150 C

December 17, 2020 By Redding Traiger

Diodes Incorporated has announced a family of automotive-compliant, two-wire unipolar (AH323xQ/4xQ) and latch (AH327xQ/8xQ) switch integrated circuits (ICs) that provide high sensitivity and high stability over wide operating voltage and temperature ranges. The ICs are for use in automotive proximity- and position-sensing applications, including seatbelt buckle, power window, gear selector, and seat position. The adoption […]

Filed Under: Automotive, mixed-signal, Products, Tools Tagged With: diodesinc

Analog multiplexers capable of switching signal voltages up to 36 V

September 30, 2020 By Aimee Kalnoskas

Diodes Incorporated announced the introduction of the PS508 and PS509 analog multiplexers that are capable of switching signal voltages of up to 36V in an industrial environment. The high voltage capability of the devices will support industrial IoT (IIoT) applications using multiple sensors, including factory automation and process control, battery monitoring systems, and test and […]

Filed Under: Applications, Connectivity, IoT, mixed-signal, Tools Tagged With: diodesinc

Simulation too simplifies component selection, evaluation and verification for new designs

September 15, 2020 By Redding Traiger

Texas Instruments announced a new custom version of the PSpice simulator from Cadence Design Systems Inc. that enables engineers to simulate complex analog circuits with unlimited analysis of TI power and signal-chain products. PSpice for TI offers full-featured circuit simulation with a growing library of more than 5,700 TI analog integrated circuit (IC) models, making […]

Filed Under: mixed-signal, PCB design, Simulation, Software, Tools Tagged With: texasinstruments

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