Maxim Integrated Debuts Three Chips Aimed At Increasing IoT Battery LifeMarch 15, 2021 by Gary Elinoff
The new devices save power and are tough enough to thrive even in challenging physical environments.
Image courtesy of Maxim
Designed for Use in Low-Power Sensors that Can Survive in Tough Environments
The three new devices from Maxim, part of their “Essential Analog” offerings, are aimed squarely at saving power in sensor applications. Device resilience in the face of high temperature, humidity and mechanical stress is also a vital requirement.
As per Vickram Vathulya, vice president of Core Products Group at Maxim Integrated, “These three products represent the best in our Essential Analog offering” He goes on to say that “Maxim’s mission continues to be providing engineers the finest products to sense and interface with the analog world. These solutions provide superb accuracy and low power consumption for the most demanding sensor applications.”
The MAX41400 instrumentation amplifier consumes 65µA, and by Maxim’s estimate, “extends battery life by 55 percent compared to the closest competitive offering. Operating voltage range is from 1.7 to 3.6 volts.
The device features a 28kHz, -3dB bandwidth. A maximum 25μV zero-drift input offset voltage over time and temperature serves to eliminate the high 1/f noise that is typical of CMOS input amplifiers. This last feature makes the MAX41400 useful in low frequency applications.
The unit is available in either a 2.5 x 2 mm 10-Pin TDFN package or in a 1.26 x 1.23 mm, 9-Bump WLP package. They operate over the -40°C to +125°C automotive temperature range
- EKG Medical Devices
- Insulin and Infusion Pumps
- Pressure, Weight, and Force Sensors
- Resistor temperature detector (RTD) Sensors
The MAX40108 precision operational amplifier works with supplies as low as 0.9V, and consumes only 25.5µA quiescent current. Here, Maxim sees a doubling of sensor battery life.
The op amp features a 168 kHz gain bandwidth product (GBW) and a typical 1μV zero-drift input offset voltage over time and temperature.
The device is available in 1.22 x 0.92 mm, 6-bump wafer-level package (WLP) with a 0.4mm bump pitch or in a TDFN package. It can operate over a temperature range of -40 to +125℃
- Industrial IoT sensors for proximity, pressure, temperature and flow
- Home medical and fitness devices
The MAX31343 real time clock (RTC) features a MEMS-based oscillator providing accuracy of ±5ppm. The robust MEMS oscillator eliminates the hazard of crystal mechanical failure and is available in a smaller package than any competitive device.
The unit communicates over an I2C bus. It sports two programmable time of day alarms and a temperature-compensated programmable square-wave output.
The MAX 31343 is supplied either in a 2.1mm x 2.3mm, 8-Pin WLP Package or in 4mm x 3mm, 8-Pin TDFN form. It operates over -40°C to +85°C
- Power meters
- Action cameras
Getting to Market Faster
To this end Maxim, has made Evaluation Kits available for all three of its new “Essential Analog” units.
The MAX31343SHLD. Image courtesy of Maxim
The evaluation kits include the: