Analogue / Linear / Mixed Signal ICs

Toshiba is aiming at high ripple rejection in a family of CMOS linear voltage regulators in a ~0.7 x 0.7mm WCSP4F package. Called the TCR5RG series, the low drop-out parts cover an output voltage range of 900mV to 5V. Achieved through the combination of a wide-gap internal circuit topology, an integrated high-speed operational amplifier and low-pass filtering, according to the ...

HFDA801A is a 2MHz PWM Class-D audio amplifier with four bridge outputs from STMicroelectronics. High quality sound is claimed by the company: “With a signal-to-noise ratio of 121dB, 120dB dynamic range and only 10μV output noise, the HFDA801A delivers an extraordinary level of audio performance.” Distortion is typically 0.02% at 1W 1kHz into 4Ω or 2Ω, or 0.08% across 20 – ...

An integrated brushless DC (BLDC) motor driver has been introduced by Texas Instruments, targeting the mild hybrid electric vehicle (MHEV) market. The DRV3255-Q1 is claimed to be the first three-phase 48-V BLDC motor driver to integrate high- and low-side active short-circuit logic. This integration eliminates external transistors and control logic to reduce the size of 48-V motor drive systems used ...

Allegro is aiming at automotive bridge-type pressure sensors with an interface IC designed to connect directly to a strain gauge or other Wheatstone bridge sensor. Qualification is automotive AEC-Q100 Grade 0. Called A17700, it amplifies and offset-adjusts the analogue input to best-fill the ADC for its internal digital signal processor. DSP includes filtering to trade speed with noise, then compensation for pressure ...

The National University of Singapore and Politecnico di Torino teamed up at ISSCC 2021 to describe a capacitive sensor interface designed to run from harvested energy, needing only a supply voltage between 300mV and 1.8V to produce an output accurate to seven bits, and consuming 1.4nJ per conversion. Not only that, but it needs no trimming, reference voltage nor supply ...

Microchip has introduced some high-side automotive current sense amplifiers, claiming that they have the lowest offset for AEC-Q100 Grade 0 qualified parts. Called MCP6C02, the Grade 0 part comes in a 3 x 3mm 8 pin VDFN package with wettable flank plating and has a maximum offset error of ±12µV, while the 6pin SOT-23 version is AEC-Q100 Grade 1. This max ...

Aiming at vibration-based equipment condition monitoring, Analog Devices has introduced a kit for hardware, software and algorithm development that will interface with data analysis tools including Matlab and Python. Called CN0549, its hardware includes a dc – 10kHz MEMS vibration sensor board (see photo), a characterised mounting cube for the sensor, a data acquisition system reference design (top board) and an embedded ...

Physical information about an analogue circuit design can be previewed using Pulsic’s Animate Preview tool. The Bristol EDA company offers the tool as a ‘freemium’ product, i.e. free to download, with online help desk and live chat support services and the option to upgrade to Animate Preview Plus. The tool runs as a plugin inside Cadence Virtuoso IC6.1.6, IC6.1.7 or ...

ADI has introduced a buck-boost battery charging controller that features Maximum Power Point Tracking (MPPT), temperature compensation and I2C interface for telemetry and control. The device operates from input voltages above, below or equal to the regulated battery float voltage. The LT8491 offers three selectable Constant Current Constant Voltage (CC-CV) charging profiles, making it ideal for charging a variety of ...

STMicroelectronics has introduced a dual 5V op amp with 50MHz gain-bandwidth product with low input offset voltage and 6.5nV/√Hz input voltage noise. Called TSV792, the op amp is unity-gain stable and has rail-to-rail inputs and outputs. “The typical 50MHz gain-bandwidth product enables accurate amplification of high-frequency signals,” according to the company. “Adding a slew rate of 30V/µs, the TSV792 is suited ...