Latest Analogue & Linear Mixed Signal ICs News

LED chip aims for bulb replacements

International Rectifier is supporting single stage flyback and buck-boost topologies in LED driver designs for bulb replacement, tube lighting and downlights. Its IRS29831 LEDrivIR controller integrates a 700V power mosfet with high-voltage start-up which is necessary for single stage designs. Designed for both isolated and non-isolated…

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Wolfson extends claim to mobile hi-fi crown

Wolfson is claiming 122dB signal-to-noise ratio (SNR) and 85dB THD+noise from the headphone DAC in its latest audio chip for phones and tablets. WM8998 audio system chip, which is one of the fabless Edinburgh firm’s ‘audio hubs’, also sports two (stereo) 100dB SNR Class-D speaker…

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How to design a supercapacitor charger with balancing

As the cost to produce supercapacitors (SCAPs, or ultracapacitors) continues to decline, they are carving out a niche in the marketplace between conventional capacitors and batteries. And, although supercaps require some “care and feeding,” they are replacing batteries in data storage applications requiring high current/short duration backup power. Furthermore…

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Regulator drives 200mA but drops only 300mV

Linear Technology’s latest low dropout voltage linear regulator is capable of delivering up to 200mA continuous output current with a 300mV dropout voltage at full load. The input voltage range is 1.6V to 45V  and the output voltage is adjustable from 0.6V to 40V. The LT3062’s…

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Current sensor ICs with internal galvanic isolation

Allegro MicroSystems is offering bidirectional ±5A or unidirectional 10A sensor ICs which have internal galvanic isolation Designed for AC or DC current sensing for motor control, switched-mode power supplies and solar invertors, the devices have a low-offset, linear Hall sensor circuit with a copper conduction path located near…

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GaN amp delivers 30W at 2-6GHz, with matching LNA

TriQuint’s TGA2578-CP is a wideband power amplifier made on the firm’s 0.25um GaN-on-SiC process, while TGA2611-SM is a broadband low noise amplifier (LNA), also made from 0.25µm GaN-on-SiC. Operating from 2 to 6GHz, the power amplifier achieves 30W saturated…

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Op amp runs off 140V supply

Linear Technology’s latest precision operational amplifiers can be operated on a supply voltage up to 140V (±70V). The dual LTC6091 features separate output disable pins, making it useful in high voltage multiplexed applications. The decompensated single LTC6090-5 amplifier offers higher speed and is stable at a gain of…

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