New-Tech Europe | April 2018

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Innovative Low-Dropout Voltage Regulator from STMicroelectronics Packs Big Performance in Tiny Footprint STMicroelectronics’ STLQ020 low-dropout (LDO) voltage regulator relieves the familiar trade-offs between quiescent current, output power, dynamic response, and package size, to give designers extra freedom. By combining small size with high performance and energy efficiency, the STLQ020 is ideal for use in battery-powered consumer products like smartphones and tablets, smart watches, audio or media devices, and wearables. It helps extend battery life in IoT endpoints such as smart meters and wireless sensors, healthcare devices like wearable monitors, and industrial applications such as factory automation or sensor networking. Drawing just 300nA quiescent current (Iq), and capable of supplying up to 200mA to the load with excellent regulation, power-supply rejection (PSRR), and transient response, the STLQ020 is available in a choice of compact packages reaching as small as a 0.8mm x 0.8mm flip- chip4. This unique combination of attributes stems from the STLQ020’s dedicated low-power design and adaptive bias circuitry, which ensures fast response and a stable output with high PSRR. In addition, dropout voltage as low as 160mV (typical) at maximum load allows longer equipment runtimes as the battery discharges. Also, with the advantage of its 5nA logic-controlled shutdown mode, the STLQ020 can extend the interval between coin-cell replacements in low-duty-cycle applications like remote sensors. With an input voltage range of 2.0V-5.5V, the STLQ020 can be powered directly from a suitable battery voltage (VBAT) or logic rail. The output voltage can be set between 0.8V and 4.5V, with either fixed-output or adjustable-output versions available. The fixed output voltages are selectable in 50mV increments. The STLQ020 is in production now, and available as a 2mm x 2mm DFN6, 0.8mm x 0.8mm flip-chip4, or 2.1mm x 2.0mm SOT323-5L, priced from $0.168 for orders of 1000 pieces. The quad-LDO evaluation board (STEVAL-LDO001V1) based on STLQ020 and 3 other low-dropout (LDO) voltage regulators can be ordered for $9.68.

AnalogDevices’SigmaStudio4.0Delivers Improved Audio Graphical Programming and Advanced Voice Processing Algorithms Analog Devices, Inc. (ADI) today introduced a new version of its audio graphical development tool. SigmaStudio 4.0 includes new features and enhancements including more intuitive user interface controls, cross-application support, and inter-process communication designed to simplify advanced audio signal processing designs for automotive, consumer, professional audio, installation, and industrial applications. Cross-application support enables SigmaStudio control from other design engineering environments, such as Python™, MATLAB®, LabVIEW, or any dotnet-based application. Inter-process communication allows SigmaStudio to send information packets to one or more supported remote processors (e.g. TCP/IP). SigmaStudio 4.0 offers users increased speed for design cycles by using indirect generic function calls instead of direct memory mapping to avoid recompiling uC host code. It also enables integration of third-party algorithms into the SigmaStudio ecosystem. “We are thrilled to start working with the updated SigmaStudio features,” said Albert Yong, Head of Electronics and Software at Bowers and Wilkins (B&W). “With the indirect parameter access and control, and improved scripting, we are going to save time and further refine our line of products.”

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