Smallest single-lead heart-rate monitor analog front end offers industry's lowest power performance
August 06, 2012 // Paul Buckley
Analog Devices, Inc. has introduced a low-power, single-lead, heart-rate monitor analog front end (AFE) for a wide range of vital sign monitoring applications.
The AD8232 AFE is 50 percent smaller and uses up to 20 percent less power than competing solutions. The resulting power, size and level of integration enable designers to develop heart rate and cardiac monitor devices for use outside of critical-care settings in areas such as personal health management and remote health monitoring.
In contrast to similar offerings, which are often derived from existing clinical cardiac monitor solutions, the AD8232 AFE was designed specifically to meet the ECG signal conditioning requirements of emerging fitness, portable/wearable monitoring and remote health monitoring equipment. Unlike the topologies employed in many of today’s integrated solutions, the highly flexible analog filtering configuration of the AD8232 incorporates a two-pole, high-pass filter that is tightly coupled with the IC’s instrumentation amplifier architecture, and an uncommitted operational (gain) amplifier that enables the user to employ multi-pole low pass filtering techniques to remove line noise and other interference.
By performing large-gain and high-pass signal conditioning in a single stage in the analog domain, the AD8232 can accommodate electrode DC offsets while operating on a single supply voltage without sacrificing performance or signal quality. With an analog output, the AD8232 can be paired with either a discrete A/D converter or a microcontroller with an embedded A/D converter, which provides system designers with the flexibility to deliver a new level of value and performance for fitness and healthcare monitoring.
In addition to the instrumentation and gain amplifier, the AD8232 heart-rate monitor AFE incorporates a reference buffer, right leg drive circuit and shutdown function. The AD8232 also includes user-selectable (AC or DC) leads-off detect circuitry that monitors when an electrode is disconnected from the patient or user, providing an alert to the system. This new heart-rate monitor AFE offers an innovative fast-restore mode that quickly and automatically recovers the cardiac signal in the event a user temporarily loses contact with an electrode during exercise, or other activity, greatly improving the quality of the end-user experience.
Availability and Pricing
The AD8232 analog front end packaged in a 4-mm x 4-mm 20-pin LFCSP is sampling now and is priced at $1.36 each per 1k units.
More information about the AD8232 analog front end for heart-rate monitoring at www.analog.com/AD8232
Toshiba considers listing or partial sale of chip business
November 30, 2015
Toshiba Corp. said Friday (Nov. 27) that it was considering splitting off its semiconductor business with listing it as a ...
Transparent LED displays built on monolayer semiconductors
Startup wants to be the ARM of neuromorphic cores
A tech correction is coming
Delayed roadmap set for debut at TSensors Summit
Tower buys Maxim's Texas wafer fab
November 27, 2015
Foundry Tower Semiconductor Ltd. (Migdal Haemek, Israel) is set to buy an 8-inch wafer fab in San Antonio, Texas, from Maxim ...
Deterministic motor control with FPGAs
LG Display plans multi-billion dollar OLED plant investment
Hybrid sensor spots cable fires before they start burning
- Battery Size Matters
- Software-Defined Radio Handbook - 11th edition
- Multichemistry Buck Battery Charger Controller
- Automotive Circuit Protection using Littelfuse Automotive TVS Diodes
InterviewCEO interview: InvenSense's Abdi on expanding MEMS horizons
InvenSense Inc. is a MEMS company that has epitomized a fabless approach to a sector that is still highly reliant on a thorough grasp of the manufacturing and packaging processes. We interviewed CEO Behrooz ...
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Microsemi is giving away two SmartFusion2 dual-axis motor control starter kits, worth 9 each, for EETimes Europe's readers to win.
The kit will let you try out Microsemi's deterministic motor control solution, compliant with industry coding standards for developing safe and reliable software for embedded applications.
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.