With 50% less power consumption than competitive offerings, the in-amp can enable designs to provide longer battery life. This performance is key for compact, wearable home-based medical devices that improve patient comfort while providing doctors with continuous and reliable patient monitoring.
The AD8235 measures 1.6 mm x 2.0 mm—one-third the size of competing instrumentation amplifiers. Operating on 1.8-V (min) and 5.5-V (max) power supplies and drawing only 40 microamps (max), the AD8235 is suitable for other low-power applications, including consumer-fitness products and industrial pressure and low-side current-sensing measurement equipment. These applications also benefit from the in-amp’s 6 nanoamp shutdown current and 40 picoamp bias current.
The AD8235’s wide power-supply range eliminates the need for extra supplies. The in-amp’s wide common-mode input-voltage range (4V and 1.4V on 5V and 1.8V supplies respectively) is important for the low-voltage operation required by many battery-powered portable applications. A high common-mode rejection ratio (CMRR) of 86 dB (gain=5) effectively eliminates common-mode interference.
The AD8235 in-amp is compatible with a number of Analog Devices’ digital isolators and amplifiers, including the ADUM2400 quad-channel digital isolator, AD8603 precision CMOS operational amplifier, AD8607 precision amplifier and the AD8609 precision quad amplifier. It comes in standard bumped-die packaging in a reel format to simplify manufacture.
Analog Devices is a US-based manufacturer of high-performance integrated circuits.
