Date: 03/05/2009

Instrumentation amplifier for ultra-portable medical electronics equipments

The new AD8235 instrumentation amplifier from Analog Devices measures 1.6 mm x 2.0 mm and also is a very low power consuming IC. Analog Devices claims, AD8235 as the industry's smallest and lowest power instrumentation amplifier (in-amp) IC. This device is made for application such as ultra portable wearable (attached to patient's body) medical electronic systems. Examples include home-use ECG (electrocardiogram) monitors, infusion pumps and activity-monitoring medical devices.

The AD8235 operating from a voltage of 1.8-V (min) and 5.5-V (max) by consuming a current of 40 micro amps (max), AD8235 is also suggested for other low-power applications, including consumer-fitness products and industrial pressure and low-side current-sensing measurement equipment.
This amplifier consumes 6 nanoamp shutdown current and 40 picoamp bias current.

AD8235 with high common-mode rejection ratio (CMRR) of 86 dB (gain=5) effectively eliminates common-mode interference.


Package: 9-lead WLCSP
Availability: Now in samples
Price: $1.59 each for 1K pieces