Analogue / Linear / Mixed Signal ICs

Power Integrations has introduced this week at PCIM in Nuremberg, Germany a range of isolated LED drivers capable of delivering up to 12W output power for LED lighting designs. The LYTSwitch-2 LED-driver ICs use primary-side control for a smaller design footprint. The driver is isolated which means the LEDs can be affixed directly to a metal heat sink, without the need for an electrically isolating enclosure that is often required ...

Linear Technology  has designed a supercapacitor charger IC that it claims is a standalone capacitor-based backup power device. Designed for systems to provide short-term uninterrupted power in the event of a main power failure, the chip provides capacitor stack charging, balancing and control for a backup system. The LTC3350 features a wide 4.5V to 35V input voltage range and over 10A of charge/backup current capability. ...

STMicroelectronics has gone to some lengths to reduce the power of its latest STM32L0 microcontrollers. PCIM exhibition in Nuremberg (20-22 May) is the supplier’s first opportunity to demonstrate its low power credentials. ARM’s most power-efficient Cortex-M0+ core with its various power-management modes is one element of the design. But attention has also been given to the power consumption of peripherals. ...

Analog Devices has introduced a dual channel 14bit, 1Gsample/s ADC for direct RF sampling. AD9680 has a noise density of -154dBFs/Hz and, working with an FPGA, is intended to extract signals in congested RF environments for communication, instrumentation, military and aerospace applications. “Implementing a direct RF sampling architecture eliminates analogue down-conversion stages and their associated noise and cost, and allows more ...

Linear Technology has introduced a ride-through DC-DC voltage converter IC which can deal with a sudden loss of input voltage from a single supercapacitor energy source. The IC has a main buck regulator with a built-in boost converter for temporary backup, or ride-through, of VOUT during a sudden loss of input voltage. The device monitors VIN, VOUT and VCAP and ...

ON Semiconductor  has introduced a new family of complementary metal-oxide semiconductor (CMOS) battery fuel gauge ICs for measuring the remaining power level of one-cell lithium-ion (Li+) batteries used in smartphones. The battery monitor devices have measurement accuracy ± 5% (for LC709201F and LC709202F) or below ± 2.8% (LC709203F) by employing a correction technology to ascertain temperature and voltage. Low current consumption minimises the drain on battery power helping ...

Wireless receiver sensitivity will benefit from using high gain low noise amplifiers made possible by the high input mixer, writes Richard Wilson Linear Technology has introduced an active downconverting mixer capable of accepting the high signal levels seen in LTE mobile, satellite communications and white space radio. The LTC5577 non-linear mixer has an operating frequency range of 300MHz to 6GHz, ...

The LT3796-1 is a switching controller designed to regulate a constant current or constant voltage at the output—necessary requirements for driving LEDs. It uniquely features two independent current sense amplifiers, and its high side PMOS disconnect switch driver, which can be operated either in combination with the switching regulator using the PWM pin or independently using the TGEN pin. These ...

Texas Instruments has introduced its first 36V rail-to-rail input and output (RRIO) op amp which it claims will achieve precision offset voltage and drift without using auto-zero techniques. The OPA192 achieves stable offset voltage drift over the full specified temperature range, which eliminates the need for system level calibration. “Fast settling and high-output drive, combined with precision, allows designers to use the device ...

In 2013,  Silicon Labs revealed a quartz-beating MEMS resonator, the first fruit of technology from its 2010 acquisition of Sunnyvale-based Silicon Clocks, and a gem of semiconductor engineering. “We are guaranteeing ±20ppm performance for 10 years from -40 to 85°C, Mike Petrowski, v-p timing products at Silicon Labs, told Electronics Weekly. The resonator is a square of poly-SiGe topped with ...