Analogue / Linear / Mixed Signal ICs

STMicroelectronics’ LD56020 is a 200mA linear voltage regulator that will operate from 1.1 to 5.5V, and has 8.8µVrms output noise (10Hz – 100kHz) and 90dB supply-voltage rejection (1kHz 20mA). There are six output options: 1.0, 1.1, 1.2, 1.8, 3.0 or 3.3V, with 190mV maximum drop-out at 200mA full load – and custom versions outputting from 0.6 to 4.0V can be made in 50mV steps. Max ...

TI has released a couple of isolated switch chips, one inductive and the other capacitive, to replace electromagnetic and opto-electronic relays in vehicles with 800V batteries. TPSI3050-Q1 is the inductively-isolated (5kVrms reinforced) IC, a switch driver that delivers a 10V gate drive on its secondary side as well as a continuous 50mW dc supply for auxiliary circuitry – so not separate secondary-side ...

Analog Devices has introduced a 24bit 2Msample/s dual-channel SAR analogue to digital converter, branding it ‘Easy Drive’ for its front end. “Our Easy Drive feature is to eliminate in most cases the need for a dedicated buffer amplifier – a user is still free to use a buffer, but it is not a requirement,” the company told Electronics Weekly. “Easy Drive is ...

Infineon has introduced a chipset to implement its take on electric vehicle battery stack monitoring, using a combination of capacitive and transformer coupling to get cell charge-state data safely across the hundreds of volts present. There are two chips: TLE9012DQU, the Li-ion battery monitoring and balancing IC, which can handle up to 12 cells in series, and TLE9015DQU which interfaces a microcontroller ...

STMicroelectronics is using Class-G analogue audio technology to create 117dB S/N ratio, >117dB dynamic range (A-weighted), automotive amplifier. Class-G amplifiers are similar to traditional Class-AB amplifiers except that, to increase electrical efficiency, the output devices are supplied from a low voltage rail when output signals are small, and a higher voltage rail during loud passages. In this case, an integrated buck ...

ADL5580 is a SiGe dc to 10.0GHz differential-in differential-out gain block from Analog Devices, which has a digital bus for signal path tweaking. “The amplifier offers a referred-to-input noise spectral density of 2.24nV/√Hz at 1GHz and is optimised for distortion performance over a wide frequency range, making the device ideal for driving high speed 12bit to 16bit ADCs,” according to ...

Analog Devices has created an alternative to its venerable LTZ1000 ultra-precision voltage reference, with better initial accuracy and less noise, although not every parameter is improved. Called ADR1000 (right), the nominally 6.62V part is a pin-compatible replacement for the LTZ1000 (below), and like it includes a buried Zener reference, a heater for temperature stabilization and a temperature sensor. As with ...

E-Peas has unveiled boost and buck energy harvesting controllers that can start up on a few hundred millivolts and provide regulated outputs as well as energy storage mediation. There are three parts: AEM00940: harvesting and storage manager with LDO Two regulated outputs Supercapacitor or battery storage Optional primary battery back-up source Boost harvester interface Harvest voltage settable across 50mV to 4.5V 380mV ...

TI has introduced a voltage reference that typically runs from 680nA and yet has a max initial error of ±0.05% and a max temperature coefficient of 10ppm/°C across -40 to 125°C – and it will operate down to -55°C. Called REF35, it will run from up to 6V and different versions offer outputs of 1.024, 1.2, 1.25, 1.6, 1.8, 2.048, 2.5, 3, 3.3, ...

Menlo Micro has released another MEMS electro-mechanical relay, this time a single-pole four-throw (SP4T) dc-18GHz switch. MM5120 will handle 25W (150W pulsed), according to the company, though its 5.2 x 4.2mm LGA package. Insertion loss is typically <0.6dB at 12GHz. IP3 linearity is said to be >95dBm. Contact movement is though electrostatic attraction, with the necessary voltage generated by an integrated charge ...