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Analogue / Linear / Mixed Signal ICs

The latest Electronics Weekly product news on analogue, linear and mixed-signal ICs.

5v analogue front ends with ΣΔ ADCs and sensor interfacing

Nisshinbo NA220x analogue front end block

Nisshinbo Micro Devices has released a series of industrial 5V analogue front end ICs with high-resolution ΣΔ converters, input multiplexers, programmable gain amplifiers and sensor excitation current sources. NA2202 has 16bit resolution NA2203 has 20bit resolution NA2204 has 24bit resolution “Microcontrollers with 5V operating voltage are still widely used in the industrial equipment market, according to the company. “In order ...

VLSI Symposium: RF ADCs cover 5GHz

Imec VLSI-ADC

At the IEEE VLSI Symposium this week, Imec revealed two ADCs for 5GHz ‘beyond 5G’ communication, one for base stations and one for phones. The base station ADC operates over bands up to 5GHz. It is a 10Gsample/s cmos hierarchical time-interleaved ADC that delivers 9 ENOB (effective number of bits) at low frequencies and 8.2 ENOB at Nyquist. SFDR (spurious-free ...

High-side power switch with smarter fusing

ST VNF9Q20F quad high side driver

STMicroelectronics has added I2T fusing to a automotive quad high-side power switch. As well as current-squared time fusing VNF9Q20F, as it will be known “responds within 100µs to turn off the [output] mosfet if excessive current is detected”, said ST. “Performing as an intelligent circuit breaker, [it] enhances board-net voltage stability and prevents PCB traces, connectors and wire harnesses from ...

Radiation-specified 40V GaN for space

EPC7001BSH GaN hemt

EPC Space has created two surface-mount 40V radiation-specified GaN hemts for space use. EPC7001BSH is a 50A (120A pulse) 11mΩ transistor in 5.7 x 3.9mm packaging EPC7002ASH is a 15A (40A pulse) 28mΩ transistor in 3.4 x 3.4mm packaging “Both devices have a total dose radiation rating greater than 1,000kRad(Si) and SEE immunity for LET of 83.7MeV/mg/cm2 with Vds up ...

PCIM: 250W smart GaN motor driver is only 12x12mm

TI DRV7308 GaN smart motor power module

Texas Instruments introduced a 450V intelligent power module that includes a GaN three-phase bridge for motors up to 250W. Called DRV7308, it can stand-off 650V and handle pulses up to 5A. Inside its 12 x 12mm QFN package and six 205mΩ hemts (at 25°C ambient), drivers and protection component, and it is capable of implementing inverters with >99% efficiency, according ...

Three rail multi-phase dc-dc controller meets Intel IMVP 9.2

AOZ71137 4x2x1 phase dcdc

Alpha and Omega Semiconductor is aiming at Meteor Lake and Arrow Lake notebooks with a multi-phase dc-dc converter controller that meets Intel IMVP 8, 9, 9.1, and 9.2 specifications. AOZ71137QI is a three rail seven-phase controller for CPUs that has: up to four phases for the core voltage (‘IA domain’), up to two phases for graphics (‘GT domain’) and one ...

300mA LDOs in 1mm package

Toshiba TCR3LM tiny LDOs market pic

Toshiba has announced 300mA LDOs in a 1 x 1 x 0.37mm DFN4D package. Quiescent current is typically 1.2μA with no load. They are “specifically aimed at applications powered by small-scale batteries [including] IoT modules, communications modules, wearable devices and other miniature equipment”, according to the company. There are over 30 devices spanning outputs of 0.8 to 5.0V, with an ...

50A bidirectional current monitors measure within -4 to +110Vdc

TI INA790B current sense amplifier block

Texas Instruments is planning a pair of precision current monitors that can measure ±50A over -4 to 110V. They are the standard INA791B (right) and the PWM residue rejecting INA790B (below). “High-precision measurements are enabled by matching the shunt resistor value and the current-sensing amplifier gain across temperature,” according to TI. “Enhanced PWM rejection reduces the effect of common-mode transients ...

The need for analogue expertise in a digital world

Bourns-1-300x200.jpg

Although engineers design predominantly digital systems, they will always need some analogue knowledge, say Scott Carson and Jed Boyer. The drive to minimise power consumption in everyday devices via digitisation means much of the infrastructure needed to power these devices is largely analogue at its core. With analogue design being such a critical skill for systems engineers, it is quite ...

More on: Completely integrated inductive proximity switch IC

Melexix MLX92442 inductive sensor block 1094

Last week Belgian fabless chip company Melexis announced a unique inductive sensing IC that includes a tiny transformer, drive circuit and sense circuit, so Electronics Weekly decided to have a closer look. No permanent magnet, external or internal, is needed, and external magnetic fields are rejected. MLX92442 only requires a nearby electrically conductive object for triggering. It comes in either ...