Isolated amplifiers

Increase system accuracy and reduce board space with our integrated high-voltage resistors

Our isolated integrated high-voltage resistors integrate the high-voltage resistor ladder and isolated amp into one package.

Benefits:

• Low temperature and lifetime drift compared to discrete resistors, enabling voltage measurements with accuracy errors <1% without the calibration external resistors require.

• Removing need for up to 15 external high-voltage resistors lowers system-level costs and reduces solution size by up to 50%.

• High-voltage resistor ratios for industry standard voltage levels such as ±400VAC and 600V/1000VDC.

• Single-ended ratiometric output for reducing BOM and solution cost and differential output for greater noise immunity.

• Lower manufacturing time and costs by eliminating the need for system-level calibration.

Eliminate the need for an external high-side supply with our single-supply isolated converters

Our isolated single-supply devices integrate an DC/DC converter that enables single-supply operation from the low side of the device.

Benefits:

• Measuring non-ground-referenced signals such as phase-to-phase measurements creates a novel solution for noisy, space-constrained applications.

• Removing the external high-side supply helps simplify designs and reduce board space and cost.

Solutions for both isolated voltage sensing and isolated shunt-based current sensing.

Remove the need for external components by directly interfacing with your MCU

Our isolated voltage-sensing devices have two single-ended output options: fixed gain and ratiometric (variable) gain.

Benefits:

• Fixed-gain and ratiometric single-ended output devices integrate the differential to single-ended operational amplifier, reducing solution size and system costs and enabling direct interfacing with the microcontroller (MCU).

• Ratiometric single-ended output devices can vary the output swing of the isolated voltage-sensing amplifier to match the full scale range of the analog-to-digital converter (ADC) inside the MCU, increasing measurement resolution and allowing for the full use of the ADC's dynamic range.

Solutions for both isolated voltage sensing and isolated shunt-based current sensing.

Explore our extensive isolated amplifier portfolio

Our isolated sensing amplifiers have differential output option.

Benefits:

• High signal integrity in noisy environments and long trace lengths.

• High common-mode transient immunity for reliable operation.

• Multisource solutions.

Solutions for both isolated voltage sensing and isolated shunt-based current sensing.

Choose between amplifiers and modulators with functional, basic and reinforced isolation

Our isolated amplifier devices are available in three isolation ratings: functional, basic and reinforced.

Benefits:

• Functional isolation devices support 1mm of creepage and clearance and a 200VRMS working voltage.

• Basic isolation devices support 4mm creepage and clearance and a 800VRMS working voltage.

• Reinforced isolation devices support 8.5mm creepage and clearance and 1,500VRMS working voltage.

• Wide-body package-reinforced isolation devices support 15.7mm creepage and 14.7mm clearance with a 2,000VRMS working voltage.

Solutions for both isolated voltage sensing and isolated shunt-based current sensing.