Distributor Saelig now stocks Jetperch’s Joulescope JS320, the third-generation Joulescope precision DC energy analyzer designed for engineers developing low-power embedded systems. The JS320 has a redesigned measurement path, focused on low-current accuracy for use in optimizing systems that most of the time are in sleep mode, only to wake briefly for sensing, processing, communication, or user interaction.
The JS320 focuses on the measurements that matter most for today’s low-power and battery-powered devices: offset stability, leakage current, range-change behavior, and time-domain response, all of which affect battery-life estimates and engineering decisions. The Joulescope JS320 measures current from nanoamps to amps, while simultaneously measuring voltage. The device software computes power, energy, and charge directly, helping engineers estimate battery life, optimize firmware, validate hardware design choices, compare operating modes, and evaluate power supply requirements. The JS320 features improved offset stability, reduced leakage current, Enwavify v2 technology for current range changes, a 24-bit ADC, wider internal digital processing, and a linear-phase analog path. These improvements are especially important for BLE devices, battery-powered IoT products, sensors, remote controls, backscatter RF systems, energy-harvesting devices, and other products where small measurement errors can directly affect battery-life estimates.
It combines high-speed sampling and rapid dynamic current range switching to provide accurate and seamless current and energy measurements, even for devices with rapidly varying current consumption. The consumed energy by the target device during development can be accurately measured, for better product battery life analysis.
Applications include microprocessor and hardware power profiling and optimization, sleep current optimization, troubleshooting, software characterization and interrupt service routine profiling, USB inrush and suspend current pre-compliance testing, general-purpose current, voltage, power, charge, and energy measurement, and so on.
The JS320 has a very low voltage drop of 25mV at 1A, which does not affect the operation of the target device. Joulescope’s extremely fast current range switching maintains this low voltage drop even under rapidly varying current demands.
The JS320in is made Jetperch in the US, and available from Saelig.
