ICs & Semiconductors

Replacing five components, the MAX22530 is the latest addition to the MAXSafe Technology family by Maxim Integrated. The isolated, field side, self-powered 12-bit system monitor shrinks solution size by 40 per cent and tightens accuracy by a factor of 50, says the company, improving system uptime in automated distribution and sub-station applications.

The MAX22530 has four channels and integrates five components into a single IC. It is intended to be used by automation system designers to save board space, increase channel density and improve the accuracy of monitoring voltage and current inputs and enable operators to monitor the system with finer precision and reduced system downtimes.

The MAX22530 delivers a 50x improvement in monitoring measurement accuracy (from ±50 per cent to just ± one per cent) compared to the standard linear optocoupler isolation solutions made from discretes. It uses Maxim’s integrated isolation technology that combines a 12-bit ADC, a DC/DC converter, user-settable threshold detection levels and chip-level diagnostic capabilities. This combination enables 50x greater stability in current transfer ratio performance to achieve a stable sense resistor voltage, says Maxim.

The measurement accuracy across four voltage and current inputs means that the MAX22530 allows a 250mm² solution size, which is 40 per cent smaller that the 420mm² size for the closest competitive discrete solution

The MAX22530 joins the existing MAXSafe products which combine integrated and isolated micropower DC/DC converters and communications lines. These are used to power up field circuits that are isolated from the control-side power source while simplifying diagnostics in signal monitoring applications.

The MAX22530 is available from Maxim Integrated’s website now. There is also the MAX22530EVKIT# evaluation kit.

Maxim Integrated has a broad portfolio of semiconductors, tools and support, to deliver essential analogue solutions including efficient power, precision measurement, reliable connectivity and robust protection along with intelligent processing. Its customer base includes designers in application areas such as automotive, communications, consumer, data centre, healthcare, industrial and the IoT.

http://www.maximintegrated.com

At next week’s Live IEEE International Microwave Symposium (IMS), CML will introduce its SuRF (Semiconductor Microwave RF) family.

The family is CML’s range of high frequency, high bandwidth RFICs and MMICs for RF and mmWave applications. Devices have been designed to help accelerate the design of RF products operating in the mmWave and GHz frequencies.

Among the devices that visitors will see are the CMX90A003 (1W) and CMX90A004 (2W) 860 to 960MHz power amplifiers. These two-stage, fully matched MMIC power amplifiers deliver +29.5dBm (CMX90A003) or +32.5dBm (CMX90A004) of saturated power. Both devices use GaAs HBT technology. The CMX90A003 can be used as a booster power amplifier in sub-1GHz applications to extend the range of low power RF transceivers. The CMX90A004 is optimised to operate as a high-power final stage PA in wireless ISM applications.

There will also be the CMX90G301 (+1dB) and CMX90G302 (+2 dB) 1.4 to 7.1GHz positive gain slope amplifiers, designed to compensate for frequency related gain loss. They are based on GaAS pHEMT and combine low DC power, low noise and high gain in a cascadable MMIC.

CML will also be offering visitors the chance to learn more about the recently introduced CMX940 low-power Frac-N RF synthesiser. The CMX940 addresses the demand coming from OEMs for a high-performance, highly configurable RF synthesiser that can operate from 49 to 2040 MHz. It is claimed to deliver best-in-class phase noise and low levels of spurious products due to a high level of integration, which includes a wideband voltage controlled oscillator (VCO).

Due to Covid-19 restrictions there will be no live demonstrations during the in-person event in Atlanta, GA. A video demonstration of the CMX940 will be available, and SµRF evaluation boards will be on display.

Live IEEE International Microwave Symposium (IMS) takes place in Atlanta, Georgia, USA, between 7th and 10th June. CML will be exhibiting at booth 1341.

http://www.cmlmicro.com

The G3-PLC Hybrid specification is intended for seamless connectivity over powerline and wireless media. STMicroelectronics claims that its ST8500 and S2-LP chipset is the first to be certified according to the G3-PLC Hybrid communication standard.

The G3-PLC Hybrid specification allows smart-grid, smart-city, industrial, and IoT equipment to select the best available wireless or powerline channel at any time, automatically and dynamically, according to network conditions. As well as ensuring superior coverage, reliability, and scalability, it also allows cost-efficient system operation and enables new use cases, explains ST.

The hybrid chipset was introduced in 2020 and has completed the latest G3-PLC certification scheme, published in March 2021, which incorporates the Hybrid profile tests.

The certified chipset combines the ST8500 programmable multi-protocol powerline communication system on chip (SoC) and STLD1 line driver with ST’s S2-LP low-power sub-GHz radio transceiver.

Based on 6LowPAN and IPv6 and combining RF connectivity with the native G3-PLC protocol stack, the ST8500 SoC consumes less than 100mW in receive mode, in line with specifications to minimise the grid load imposed by new smart meters. It contains a high-performance DSP for real-time protocol processing and an Arm Cortex-M4F core for upper-layer processing and system management. Both the DSP and Arm core have their own code and data SRAM on-chip. Peripherals include an integrated 128/256-bit AES cryptographic engine. The analogue front end (AFE) for connecting to the STLD1 line driver is also integrated. The STLD1 communicates reliably, even across noisy power cables and with low impedance, with high drive capability and high linearity, says ST.

The S2-LP is a low power RF transceiver, intended for RF wireless applications in the sub-1GHz band. It is designed to operate in both the license-free ISM and SRD frequency bands at 433, 512, 868, and 920MHz, and can be programmed to operate at additional frequencies in the 413 to 479MHz, 452 to 27MHz, 826 to 958MHz, and 904 to1055MHz bands. The transceiver allows an RF-link budget greater than 140dB for long communication ranges and meets radio equipment regulations in territories worldwide including Europe, North America, China, and Japan. ST provides companion integrated balun/filter chips for the S2-LP that simplify antenna-connection circuitry and save PCB area in space-constrained applications.

The SoC’s programmability enables a software-defined implementation capable of supporting a broad portfolio of powerline protocol stacks, in worldwide frequency bands such as CENELEC and FCC, ST adds.

The ST8500 powerline communication SoC platform is used in smart metering, smart industrial and infrastructure applications. In addition to the chipset’s use in the smart grid market, ST’s hardware and firmware solution has been selected to power the official G3-PLC Alliance RF certification testing equipment.

The ST8500 SoC is packaged as a 7.0 x 7.0 x 1.0mm QFN56. The STLD1 and S2-LP are each packaged as 4.0 x 4.0 x 1.0mm QFN24. All devices are in full production.

https://www.st.com