The market is demanding smaller and smaller portable devices, and battery-powered sensing instruments are certainly no different. When reducing the envelope size of a new product, the chosen internal components must be small as well. In this video, explore the Analog Devices AD8235, a 40 μA micropower instrumentation amplifier in space-saving WLCSP packaging.
Product Details
The AD8235 is the smallest and lowest-power instrumentation amplifier in the industry. It is available in a 1.5 mm × 2.2 mm wafer level chip scale package (WLCSP). The AD8235 draws a maximum quiescent current of 40 μA. In addition, it draws a maximum 500nA of current during shutdown mode, making it an excellent instrumentation amplifier for battery-powered, portable applications.
The AD8235 can operate on supply voltages as low as 1.8V. The input stage allows for a wide rail-to-rail input voltage range without the crossover distortion, common in other designs. The rail-to-rail output enables easy interfacing to ADCs.
The AD8235 is an excellent choice for signal conditioning. Its low input bias current of 50pA and high CMRR of 110 dB (G=100) offer tremendous value for its size and low power. It is specified over the extended industrial temperature range of −40°C to 125°C.
Applications
- • Medical instrumentation
- • Low-side current sense
- • Portable electronics
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