Texas Instruments has released two multichannel, 16-bit, delta-sigma analog-to-digital converters (ADCs), which combine high DC accuracy and AC performance with cost-effective integration. The ADS1174 (4-channel) and ADS1178 (8-channel) provide a simultaneous-sampling measurement system for demanding signal acquisition applications, such as power metering, defibrillators and ECG monitors, as well as pressure sensors, coriolis flow meters and vibration/modal analysis.
Both devices feature 25 kHz bandwidth, 2 μV/°C offset drift and up to 97 dB signal-to-noise ratio (SNR). Two operating modes allow for optimisation of speed (52 Ksps) or power dissipation (7 mW/channel).
Traditionally, industrial delta-sigma ADCs offering good drift performance use digital filters with large passband droop, resulting in limited signal bandwidth and being mostly suited for DC measurements. High-resolution ADCs for audio applications offer larger usable bandwidths, but the offset and drift specifications are significantly worse (and often unspecified) than their industrial counterparts.
The ADS1174 and ADS1178 combine these two types of converters, allowing high-precision industrial measurements with excellent DC and AC specifications. The high-order, chopper-stabilised modulator achieves low drift and low noise over the signal bandwidth of DC up to the Nyquist frequency. The onboard decimation filter suppresses modulator and out-of-band noise, providing a usable signal bandwidth up to 90% of the Nyquist rate with stopband attenuation of 100 dB.
A selectable SPI or frame sync serial interface allows for convenient interfacing to DSPs, FPGAs and microcontrollers. Either interface supports daisy chaining to simplify readback of multiple ADCs in high channel-count systems. The ADCs are fully specified over the industrial temperature range of -40°C to +105°C.
Dual-range IMU with edge processing EBV Electrolink
Analogue, Mixed Signal, LSI
ST’s innovative LSM6DSV80X combines two accelerometer structures for 16 g and 80 g full-scale sensing, a gyroscope up 4000 dps, and embedded intelligence in a single component.
Read more...Ultra-low-power wireless module Altron Arrow
Telecoms, Datacoms, Wireless, IoT
The STM32WBA5MMG from STMicroelectronics is an ultra-low-power, small form factor, certified 2,4 GHz wireless module that supports Bluetooth LE, Zigbee 3.0, OpenThread, and IEEE 802.15.4 proprietary protocols.
Read more...16-channel multicell battery monitor Altron Arrow
Power Electronics / Power Management
The ADBMS6830B is a multicell battery stack monitor that measures up to 16 series-connected battery cells with a lifetime total measurement error of less than 2 mV.
Read more...Bringing Bluetooth Channel Sounding to automotive and beyond with KW47 Altron Arrow
Telecoms, Datacoms, Wireless, IoT
NXP’s new Channel Sounding-certified KW47 and MCX W72 wireless MCUs are set to help automakers with distance measurement, bringing an additional ranging solution for car access and autonomous systems, and will be utilised across a broader spectrum of applications.
Read more...Wi-Fi 6 and Bluetooth LE coprocessor module Altron Arrow
Telecoms, Datacoms, Wireless, IoT
The ST67W611M1 from STMicroelectronics boasts an all-in-one design which, together with its capabilities, contribute to making it an attractive choice for IoT edge devices requiring a single-chip solution.
Read more...Wi-Fi 6 plus Bluetooth LE SoC Altron Arrow
Telecoms, Datacoms, Wireless, IoT
Silicon Labs’ SiWx917M SoC is the company’s lowest power Wi-Fi 6 SoC, ideal for ultra-low power IoT wireless devices using Wi-Fi, Bluetooth, Matter, and IP networking for secure cloud connectivity.
Read more...High-reliability isolation amplifiers EBV Electrolink
Analogue, Mixed Signal, LSI
The VIA series of isolation amplifiers from Vishay are designed to deliver exceptional thermal stability and precise measurement capabilities.
Read more...Mibbo QT2C Series signal isolators Conical Technologies
Analogue, Mixed Signal, LSI
The Mibbo QT2C Series isolators support a rich combination of input and output signals, working with either current loops or voltage levels.
Read more...Simple battery charger ICs for any chemistry Altron Arrow
Editor's Choice Power Electronics / Power Management
The LTC4162 is a highly integrated, high voltage multi-chemistry synchronous monolithic step-down battery charger and PowerPath manager with onboard telemetry functions and optional maximum power point tracking.
Read more...Microchip enhances TrustMANAGER platform Altron Arrow
DSP, Micros & Memory
Firmware over-the-air updates and remote cryptographic key management provide scalable solutions for addressing IoT security challenges.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version