Analogue / Linear / Mixed Signal ICs

Linear Tech DC-DC converter deals with loss of input

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…

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IC measures power in Li-ion cells to +/-2.8%

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…

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Linear tunes mosfet bridge for automotive and military

Linear Technology is now offering automotive (H-grade) and high reliability military (MP-grade) versions of the LT4320, diode bridge controller for 9V to 72V systems.

The device is designed to replace a full-wave diode bridge rectifier with a low loss N-channel mosfet bridge to reduce the power…

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RF mixer takes high input signals in its stride

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…

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LED controller detects faulty LEDs, provides 100:1 analogue dimming

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…

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TI introduces highest precision op amp

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…

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MEMS resonator outperformed quartz in 2013

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…

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Diode bridge is efficient for power-over-Ethernet

Microsemi is targetting power-over-Ethernet designs with a diode bridge based on a dual pack of mosfet-based full-bridge rectifiers.

The device’s mosfets have an R(DS) of 0.16ohm, which will keep efficiency and output power high for power-over-Ethernet (PoE) and power-over-HDBaseT…

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