Matching in Analog Layout
May 20, 2014 · One common matching technique is known as common centroid. In this case, two devices to be matched are split into several fingers and placed in a pattern, as shown in Figure 1. The key points are that the centroids of each device should coincide, the devices should be symmetrical, their orientation should be the same, and the array should be as ...
An Analog Tutorial: Current sources - Planet Analog
Mar 28, 2019 · James Bryant, retired Analog Devices ‘guru’ says, “…current outputs offer advantages in a number of situations, including analog current-loop signaling (0 mA to 20 mA and 4 mA to 20 mA) in high-noise environments, and level shifting an analog signal across a large potential difference without the use of optical or magnetic isolation techniques.” (See Reference 4)
The basics of 4-20mA current loop transmitters - Planet Analog
May 5, 2016 · The sensor, sensor-conditioning circuitry, and 4-20 mA transmitting circuitry must consume less than 4 mA of operating current, or the transmitter cannot output the 4 mA zero-scale level [3]. Note that the V LOOP GND is not one of two connections provided to the 2-wire sensor transmitter. Therefore, the transmitter must create a local ground ...
Solenoids vs. Relays: What is The Difference? - Planet Analog
Feb 27, 2018 · Solenoids provide an electromechanical interface for many of these applications. In addition, many electronic loads are often switched in and out. Relays are a form of solenoid that switches electronic loads. This blog is an introduction to relays and solenoids for the beginner with a few stories about the experiences I’ve had with each.
Design Margins in Analog & Digital - Planet Analog
Apr 19, 2013 · Design Margin is a term that engineers use, sometimes rather casually, when describing how “close to the edge” a design is. The margin might relate to power dissipation in a component or the voltage applied to a device with respect to its absolute maximum rating. Sometimes the margin is a nebulous quantity and it isn't clear how much margin ...
Understanding analog-to-digital converter (ADC) drivers
Jun 13, 2022 · The need for analog signal conditioning, including analog-to-digital converters (ADCs), continues to grow as sensors become more and more abundant within a variety of end markets. The overall sensor market is anticipated to grow at an annual compounded rate of over 9%. End markets include expansion within various Internet of Things (IoT ...
The latest about RF front-ends in 5G, Wi-Fi 6E and IoT
Jun 28, 2021 · Not to be outdone, NXP has released the WLAN7205C front-end IC in a 2 x 2 mm package with a 6 GHz EVM of -44 dB at 14.5 dBM power out. The chipmaker is targeting the front-end IC at Wi-Fi 6E connectivity in mobile handsets. 5G handsets. Speaking of mobile, competition for RFFEs in 5G handsets is heating up.
GNSS/GPS antenna design: FRPA or CRPA? - Planet Analog
Dec 22, 2023 · CRPAs use a form of spatial filtering to remove the unwanted signals and present higher fidelity GNSS signals. CRPAs are attractive to use because they don’t require any additional electronics or programming of the GNSS receiver and are merely an FRPA replacement. But unlike FRPA, CRPA are not passive, and do require external power.
Build Your Own Curve Tracer, Part 1: Introduction - Planet Analog
Jan 14, 2017 · The SMU shown above has a current sense circuit (ISN) that is a high-side circuit (ISN-H) because the sense circuit is in series with the positive or high-side terminal. The TPA202 input-port (INP) SMU has high-side current sensing and the output port (OUT) has low-side current sensing (ISN-L), where the OISN circuit is between the negative port terminal and the amplifier or source ground.
Input bias current matters in precision measurements
May 18, 2020 · Comments 0. Input bias current is a usually overlooked amplifier parameter that can have a significant effect on an amplifier circuit’s output accuracy. Sometimes the effect is small enough to be ignored, but sometimes it can cause a circuit to fail entirely. Engineers designing for precision applications such as current sensing or sensor ...