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ADUM3151BRSZ - 7-Ch SPI Digital Isolator | Analog Devices
ADUM3151BRSZ

ADUM3151BRSZ - 7-Ch SPI Digital Isolator | Analog Devices

The ADUM3151BRSZ is a 7-channel, SPIsolator digital isolator from Analog Devices, optimized for isolated serial peripheral interface (SPI) applications. It provides 3750 Vrms isolation with a maximum data rate of 34 Mbps and a common-mode transient immunity (CMTI) of 25 kV/µs. The device is housed in a 20-pin SSOP package (0.209" width, 5.30 mm) and operates from a 3 V to 5.5 V supply. A digital isolator is a component that provides electrical isolation between two circuits while allowing digital signals to pass across the isolation barrier. It is essential in applications where ground potential differences, noise, or safety requirements demand galvanic isolation. The ADUM3151BRSZ uses Analog Devices' iCoupler chip-scale transformer technology, which offers superior performance compared to optocouplers in terms of speed, power consumption, and reliability. Key features include low propagation delay of 14 ns on the CLK, MO/SI, MI/SO, and SS channels, supporting SPI clock rates up to 17 MHz. The device also features a 7-channel configuration with three forward channels and four reverse channels, making it ideal for full-duplex SPI communication. The high CMTI of 25 kV/µs ensures reliable operation in noisy industrial environments. The ADUM3151BRSZ is designed for isolated SPI interfaces in applications such as industrial automation, motor control, and data acquisition systems. Its low propagation delay and high data rate enable high-speed SPI communication across the isolation barrier without significant timing degradation. The device also includes an enable pin for power management and a thermal shutdown feature for protection. When designing with the ADUM3151BRSZ, ensure proper PCB layout with adequate creepage and clearance distances for the isolation rating. The device requires a bypass capacitor on both supply pins to maintain signal integrity. The SSOP-20 package is suitable for space-constrained designs, and the device is RoHS compliant.

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ADUM3151BRSZ-RL7 - 7-Ch SPI Isolator 3.75kV | Analog Devices
ADUM3151BRSZ-RL7

ADUM3151BRSZ-RL7 - 7-Ch SPI Isolator 3.75kV | Analog Devices

The ADUM3151BRSZ-RL7 is a 7-channel, SPIsolator digital isolator from Analog Devices, optimized for isolated serial peripheral interfaces (SPIs). It is based on iCoupler chip-scale transformer technology, providing 3.75 kVrms isolation with a data rate of 34 Mbps and common-mode transient immunity of 25 kV/µs. The device is housed in a 20-lead SSOP package (0.209" width, 5.30 mm) and operates over a wide temperature range. A digital isolator is a component that provides electrical isolation between two circuits while allowing digital signals to pass. It uses capacitive, inductive, or optical coupling to transfer data without a direct electrical connection, protecting sensitive electronics from high voltages, ground loops, and noise. Digital isolators are essential in industrial automation, medical equipment, and communication systems where safety and signal integrity are critical. Key features include 7 channels with 5/2 input/output directionality, support for SPI clock rates up to 17 MHz, and low propagation delay of 14 ns on the CLK, MO/SI, MI/SO, and SS lines. The device also includes three auxiliary channels for non-timing-critical signals, and it operates from a 3.3V or 5V supply. The SSOP package is compact and suitable for space-constrained designs. The ADUM3151 uses iCoupler technology, which integrates micro-transformers on-chip to achieve isolation. This approach offers advantages over optocouplers, including higher data rates, lower power consumption, and better reliability. The device is designed to meet stringent isolation standards, ensuring robust performance in harsh environments. Typical applications include isolated SPI interfaces in industrial motor control, isolated sensor data acquisition, and isolated communication in medical devices. The high CMTI and low propagation delay make it ideal for systems requiring precise timing and noise immunity. When designing with this device, ensure proper PCB layout with adequate creepage and clearance distances for the isolation barrier. Also, place decoupling capacitors close to the power pins to minimize noise.

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ADUM3152ARSZ - 7-Ch SPI Digital Isolator 3.75kV | ADI
ADUM3152ARSZ

ADUM3152ARSZ - 7-Ch SPI Digital Isolator 3.75kV | ADI

The Analog Devices ADUM3152ARSZ is a 7-channel SPIsolator digital isolator rated at 3750 Vrms isolation with 25 kV/µs CMTI, housed in a 20-lead SSOP (5.30 mm body width) package. It supports SPI clock rates up to 17 MHz with 14 ns propagation delay on the four high-speed SPI signal channels (CLK, MO/SI, MI/SO, SS), and adds three 250 kbps auxiliary data channels for side-band signaling or control. A digital isolator is an IC that transfers logic signals across a galvanically isolated barrier using chip-scale transformers, capacitive coupling, or GMR structures rather than optocouplers or discrete transformers. The ADUM3152 belongs to the iCoupler family, which integrates on-chip transformers and CMOS logic to deliver DC-correct signal transfer, low propagation delay, and high common-mode transient immunity in a small surface-mount footprint — sitting within the broader power management and signal isolation hierarchy. Key features include 3.75 kVrms withstand voltage per UL 1577, 25 kV/µs minimum common-mode transient immunity (CMTI), 17 MHz SPI clock support, 14 ns typical propagation delay on SPI channels, and three additional 250 kbps slow channels. The part operates from 3 V to 5.5 V on both sides of the barrier with independent supply pins, supports -40 °C to +125 °C operation, and is qualified to AEC-Q100 for automotive SPI isolation. The architecture uses ADI's iCoupler chip-scale transformer technology with an oscillator/refresh circuit on each side of the isolation barrier. Differential signaling across the transformer rejects common-mode noise, allowing the part to ride through fast dV/dt transients typical in motor drive and inverter power stages without corrupting SPI data. Typical applications include isolated SPI interfaces for motor control gate drivers, industrial SPI peripherals and sensor readouts, battery management systems (BMS) and battery stack monitors, isolated ADC/DAC interfaces in data acquisition, and SPI-isolated communication for medical and industrial instrumentation. It is also used as a generic SPI isolator between a host MCU and a remote peripheral over a high-voltage barrier. When designing with this device, place 0.1 µF decoupling capacitors as close as possible to both VDD1 and VDD2 pins and keep the bypass loop area minimal to preserve CMTI margin. Ensure the PCB creepage and clearance on the SSOP body meet the target system-level isolation voltage and pollution degree requirements, and confirm that the slower 250 kbps auxiliary channels are not used for signals requiring >250 kbps. This page synthesizes distributor pricing, drop-in alternatives including same-brand and cross-brand options, and practical design notes that extend beyond the manufacturer datasheet.

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ADUM3152BRSZ - 7-Ch 3.75kV SPI Digital Isolator | Analog Devices
ADUM3152BRSZ

ADUM3152BRSZ - 7-Ch 3.75kV SPI Digital Isolator | Analog Devices

The Analog Devices ADUM3152BRSZ is a 7-channel SPIsolator digital isolator rated at 3750 Vrms isolation, with 34 Mbps data rate and 25 kV/µs common-mode transient immunity (CMTI), housed in a 20-pin SSOP (5.30 mm width) package. It is optimized for isolated serial peripheral interface (SPI) communications and supports SPI clock rates up to 17 MHz with a typical propagation delay of 14 ns on the CLK, MO/SI, MI/SO, and SS bus signals. A digital isolator is a semiconductor device that transfers digital signals across an isolation barrier using chip-scale transformers, giant magnetoresistance (GMR), or capacitive coupling rather than optical means. The device category sits within the broader hierarchy: digital isolator -> galvanic isolator -> interface IC -> signal conditioning IC -> integrated circuit. Compared to legacy optocouplers, iCoupler technology delivers 10x-100x faster propagation delay, lower power consumption, tighter channel-to-channel matching, and no LED-degradation aging effects. Key features include 3.75 kVrms reinforced isolation per UL 1577, four high-speed SPI dedicated channels (CLK, MO/SI, MI/SO, SS) plus three low-speed auxiliary channels with 1/2 channel directionality, and 3.0 V to 5.5 V operation on both VDD1 and VDD2 supplies. The 25 kV/µs CMTI rating ensures signal integrity in noisy motor-drive and power-conversion environments where fast switching transients are common. The ADUM3152BRSZ uses Analog Devices' proprietary iCoupler chip-scale transformer technology to transmit data across the isolation barrier. An on-chip oscillator and refresh circuit regenerate clean edges on the secondary side, achieving channel-to-channel skew below 3 ns and jitter below 1 ns RMS. This timing precision is essential for SPI masters that rely on matched setup/hold windows across multiple slaves. Typical applications include isolated SPI interfaces for industrial motor drives, isolated data acquisition front-ends, isolated gate-driver signal paths for IGBT/MOSFET power stages, isolated sensor readouts in process control, and medical equipment patient-isolated data links. Designers also use it as a drop-in upgrade for older optocoupler-based SPI isolation where higher throughput is required. When designing with this part, place 0.1 µF ceramic bypass capacitors as close as possible to both VDD1 and VDD2 pins, and route the high-speed SPI traces as 50 Ω microstrip with ground reference intact on both sides of the barrier. Confirm that the auxiliary channel direction configuration (1-of-2 forward vs 2-of-1 reverse) matches your design before PCB layout is frozen. This page synthesizes distributor pricing snapshots, verified drop-in same-family alternatives, and practical design notes not consolidated on the manufacturer datasheet front page.

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ADUM3152BRSZ-RL7 - 7-Ch SPI Isolator 3750Vrms | Analog Devices
ADUM3152BRSZ-RL7

ADUM3152BRSZ-RL7 - 7-Ch SPI Isolator 3750Vrms | Analog Devices

The ADUM3152BRSZ-RL7 is a 7-channel SPIsolator digital isolator from Analog Devices, optimized for isolated serial peripheral interfaces (SPIs). It provides 3.75 kVrms isolation with a data rate of 34 Mbps and a common-mode transient immunity (CMTI) of 25 kV/µs. The device is housed in a 20-lead SSOP package (0.209", 5.30mm width) and operates over the automotive temperature range of -40°C to +125°C. A digital isolator is a component that provides galvanic isolation between two circuits while allowing digital signals to pass across the isolation barrier. It is essential in applications where ground potential differences, noise, or safety requirements demand separation between the controller and the isolated side. The ADuM3152 uses Analog Devices' iCoupler chip-scale transformer technology, which offers superior performance compared to optocouplers in terms of speed, power consumption, and reliability. Key features include support for SPI clock rates up to 17 MHz, low propagation delay of 14 ns on the CLK, MO/SI, MI/SO, and SS channels, and a 25 kV/µs CMTI for robust operation in noisy industrial environments. The device also features 1/2 auxiliary channel directionality, allowing flexible configuration for additional signals. The 20-pin SSOP package is compact and suitable for space-constrained designs. The ADuM3152 is based on iCoupler technology, which uses micro-transformers to transfer data across the isolation barrier. This architecture provides high-speed operation with low power consumption and excellent timing accuracy. The device is designed to meet the stringent requirements of industrial automation, motor control, and isolated SPI communication in power systems. Typical applications include isolated SPI interfaces in industrial PLCs, motor drives, solar inverters, and medical equipment. The high CMTI and wide temperature range make it suitable for automotive and harsh industrial environments. The device is also used in isolated sensor interfaces and data acquisition systems where ground loops must be eliminated. When designing with the ADuM3152, ensure proper PCB layout to minimize coupling across the isolation barrier. Follow the manufacturer's guidelines for creepage and clearance distances to maintain the rated isolation voltage. The device requires a 5V supply on both sides (VDD1 and VDD2) and supports 3.3V logic levels with appropriate supply connections.

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ADUM3153ARSZ - 7-Ch SPI Isolator, 3.75kVrms, 17MHz | ADI
ADUM3153ARSZ

ADUM3153ARSZ - 7-Ch SPI Isolator, 3.75kVrms, 17MHz | ADI

The Analog Devices ADUM3153ARSZ is a 7-channel SPIsolator digital isolator optimized for isolated serial peripheral interfaces (SPI), housed in a 20-pin SSOP package (5.30 mm body width). It provides 3750 Vrms isolation with 25 kV/µs common-mode transient immunity (CMTI) and supports SPI clock rates up to 17 MHz through 14 ns low propagation delay across the CLK, MO/SI, MI/SO, and SS SPI bus signals. A digital isolator is a semiconductor device that transfers logic-level signals across a galvanic isolation barrier using chip-scale transformers (iCoupler technology), optocouplers, or capacitive coupling, while blocking high voltage DC and transient common-mode events. Within the power management and signal chain hierarchy, digital isolators sit between interface ICs and discrete optocouplers, replacing legacy optocouplers in industrial, medical, and renewable energy systems where board space, speed, and CMTI matter more than absolute lowest cost. Key features of the ADUM3153ARSZ include three isolated data channels (up to 17 MHz), four additional slower auxiliary channels for handshake and control, integrated transformer coils that eliminate external gate drivers, and 8 mm creepage/clearance on the 20-SSOP wide-body package. The chip scale transformer technology eliminates the LED degradation and current-transfer-ratio (CTR) drift that limit optocoupler lifetimes. Architecturally, the ADUM3153 family uses Analog Devices' iCoupler chip-scale transformer technology. The CLK, MO/SI, MI/SO, and SS data channels are designed for matched low propagation delay (14 ns typical), while three auxiliary channels support the SPI handshake (chip select, busy, interrupt) at lower data rates. Power-on default output state is low; VDD1 and VDD2 supply ranges are independently 3.0 V to 5.5 V. Typical applications include isolated SPI interfaces to gate drivers and power modules in industrial motor drives and solar inverters, isolated ADC front ends for power metering and instrumentation, SPI-isolated communication to DSPs and microcontrollers in medical patient monitors, and SPI bus extension across 5 kV reinforced isolation barriers in PLC and process control I/O modules. When designing with this device, ensure VDD1 and VDD2 bypass capacitors (0.1 µF ceramic minimum) are placed within 2 mm of each supply pin, and that PCB creepage meets the end-equipment reinforced insulation standard (typically 8 mm). The device does not require external clock generation or pull-up resistors, simplifying layout versus discrete optocoupler solutions. This page synthesizes distributor pricing, drop-in alternatives from the same ADuM315x family and competitor isolators, and practical PCB layout notes not found in the manufacturer datasheet, helping engineers select the right 7-channel SPI isolator for high-voltage industrial designs.

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ADUM3153BRSZ - 7Ch SPI Iso 3.75kV | Analog Devices
ADUM3153BRSZ

ADUM3153BRSZ - 7Ch SPI Iso 3.75kV | Analog Devices

The ADUM3153BRSZ is a 7-channel, SPIsolator digital isolator from Analog Devices optimized for isolated serial peripheral interfaces (SPIs). It is rated for 3750Vrms isolation, supports data rates up to 34Mbps, and offers 25kV/us common-mode transient immunity (CMTI). The device is housed in a 20-SSOP (0.209", 5.30mm width) package and is designed to isolate SPI signal lines while maintaining high-speed communication. A digital isolator is a component that transfers digital signals across an isolation barrier, protecting sensitive circuitry from high voltages, ground loops, and noise. In a typical system hierarchy, a digital isolator is part of the interface IC category, sitting between a controller and a peripheral or field-side device. The ADuM3153 uses Analog Devices iCoupler chip-scale transformer technology, which provides signal isolation with lower power and higher reliability than traditional optocouplers while enabling higher data rates. Key features of the ADUM3153BRSZ include 7 isolated channels (4 SPI signals: CLK, MO/SI, MI/SO, SS, plus 3 auxiliary channels with 0 forward/3 reverse directionality), a 14ns propagation delay, and support for SPI clock rates up to 17MHz. The 34Mbps data rate and 25kV/us CMTI make the device robust in noisy industrial environments where high-voltage switching transients are common. The ADuM315x family leverages iCoupler technology, which uses chip-scale micro-transformers rather than LEDs and photodiodes. This approach results in tighter propagation delay matching, higher data rates, and better reliability over temperature. The 20-SSOP package with 5.30mm width provides a compact footprint while allowing sufficient creepage and clearance for basic or reinforced isolation applications. Typical applications include isolated SPI interfaces in motor drives, programmable logic controllers (PLCs), solar inverters, medical monitoring equipment, and isolated data acquisition systems. The 0/3 auxiliary channel directionality is especially useful when the isolated side must send multiple status, interrupt, or control signals back to the controller. When designing with the ADUM3153BRSZ, pay careful attention to power supply bypassing on both sides of the isolation barrier, as well as PCB layout to maintain isolation spacing. Verify the auxiliary channel directionality matches your application, and consult the ADuM3151/ADuM3152/ADuM3153 datasheet for detailed pinout and recommended layout guidelines.

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ADUM3153BRSZ-RL7 - 7-Ch SPI Digital Isolator | Analog Devices
ADUM3153BRSZ-RL7

ADUM3153BRSZ-RL7 - 7-Ch SPI Digital Isolator | Analog Devices

The ADUM3153BRSZ-RL7 is a 7-channel, SPIsolator™ digital isolator from Analog Devices, optimized for isolated serial peripheral interfaces (SPIs). It provides 3750Vrms isolation with a data rate of 34Mbps and a common-mode transient immunity (CMTI) of 25kV/µs. The device is housed in a 20-pin SSOP package (0.209", 5.30mm width) and is available in tape and reel packaging. Digital isolators are components that transfer digital signals across an isolation barrier, providing galvanic isolation to protect sensitive circuitry from high voltages, noise, and ground loops. They are essential in industrial, medical, and communication systems where safety and signal integrity are critical. The ADUM3153BRSZ-RL7 uses Analog Devices' iCoupler® chip-scale transformer technology, which offers superior performance compared to optocouplers, including higher data rates, lower power consumption, and better reliability. Key features include 7 channels with 0/3 auxiliary channel directionality, supporting SPI clock rates up to 17 MHz with a low propagation delay of 14 ns. The device operates over a wide supply voltage range and features same-direction timing matching, ensuring synchronized data transmission. The 34Mbps data rate and 25kV/µs CMTI make it suitable for high-speed, noisy environments. The ADUM3153BRSZ-RL7 is designed for isolated SPI communication in applications such as motor control, industrial automation, and isolated sensor interfaces. Its low propagation delay and high CMTI ensure reliable data transfer in harsh industrial settings. The device also includes an enable pin for power management and supports a wide temperature range of -40°C to +125°C. When designing with this isolator, ensure proper PCB layout with adequate creepage and clearance distances to maintain isolation ratings. The device requires a bypass capacitor on both supply pins to ensure stable operation. The ADUM3153BRSZ-RL7 is RoHS compliant and lead-free, making it suitable for environmentally conscious designs.

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ADUM3154ARSZ - 3.75 kV SPI Isolator, 4 ch, 2 Mbps | Analog Devices
ADUM3154ARSZ

ADUM3154ARSZ - 3.75 kV SPI Isolator, 4 ch, 2 Mbps | Analog Devices

The Analog Devices ADUM3154ARSZ is a 3.75 kV rms, 7-channel SPIsolator digital isolator optimized for SPI interfaces, housed in a 20-pin SSOP (RS-20) package with 0.209" (5.30 mm) body width. It delivers a maximum data rate of 2 Mbps across its four high-speed data channels and supports a common-mode transient immunity (CMTI) of 25 kV/µs. The device uses Analog Devices' proprietary iCoupler technology, replacing optocouplers to remove the cost, size, power, performance, and reliability penalties of LED-based isolation. A digital isolator is a semiconductor device that transfers data across an isolation barrier using chip-scale transformers or capacitive coupling rather than an optical path. Digital isolators belong to the broader category of signal isolation ICs, sitting hierarchically between galvanic isolators and interface ICs in a system. The iCoupler family is the de-facto standard for high-speed, multi-channel SPI isolation in noise-sensitive industrial systems. Key features of the ADUM3154ARSZ include 4 high-speed SPI channels (MOSI, MISO, SCLK, SS), a low-speed 250 kbps two-wire bus to multiplex up to four SPI slaves, integrated subordinate-select demultiplexing, low propagation delay suitable for full-speed SPI timing, 3.75 kV rms reinforced isolation per UL/VDE, and 25 kV/µs minimum CMTI. The device operates from a wide supply range and provides CMOS-compatible logic levels on both sides of the barrier. Internally, the ADUM3154ARSZ combines four high-speed iCoupler channels for SPI signals with two additional low-speed channels dedicated to the 4-to-1 slave-select multiplexer. The high-speed channels support clock rates up to 2 MHz, while the low-speed address bus operates at 250 kbps to encode the active slave selection. On-chip ESD protection and tight channel-to-channel matching simplify PCB layout and reduce firmware burden. Typical applications include isolated SPI communication for industrial PLCs, motor-control gate drivers, isolated ADC/DAC SPI ports, battery-management systems (BMS), solar inverter control boards, and any SPI peripheral that must cross a high-voltage safety barrier. It is particularly well suited to industrial 24 V systems where reinforced isolation and high CMTI are mandatory. When designing with this part, pair the high-speed SPI side with a low-impedance local decoupling network (typically 100 nF + 10 µF) on both VDD1 and VDD2, and observe 4 mm minimum creepage across the barrier. The slave-select multiplexer requires the controller to drive the 250 kbps address bus during chip-select transitions; firmware must respect the multiplexer settling time. This page consolidates ADiMS real distributor pricing, drop-in alternatives in the same 20-SSOP footprint, and practical PCB/EMC design notes beyond the manufacturer datasheet summary.

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ADUM3154BRSZ - 3.75kV SPI Digital Isolator | Analog Devices
ADUM3154BRSZ

ADUM3154BRSZ - 3.75kV SPI Digital Isolator | Analog Devices

The ADUM3154BRSZ is a 7-channel SPI digital isolator from Analog Devices, designed to provide galvanic isolation for serial peripheral interface (SPI) buses. It supports SPI clock rates up to 17 MHz and data rates up to 34 Mbps, with a withstand voltage of 3750 Vrms. The device is housed in a 20-lead SSOP package (0.209" width, 5.30mm) and operates over a temperature range of -40°C to +125°C. A digital isolator is a component that provides electrical isolation between two circuits while allowing digital signals to pass across the isolation barrier. It is essential in applications where ground potential differences, noise, or safety requirements demand galvanic separation. The ADUM3154BRSZ uses Analog Devices' iCoupler chip-scale transformer technology, which offers advantages over optocouplers in terms of speed, power consumption, and reliability. Key features include a common-mode transient immunity (CMTI) of 25 kV/µs, low propagation delay and jitter, and support for up to four slave devices. The device integrates multiple isolation channels for SPI signals (CLK, MO/SI, MI/SO, SS) and additional control channels, simplifying system design. It operates from two supply voltages: VDD1 (3.0V to 3.6V) and VDD2 (4.5V to 5.5V), allowing level shifting between different logic domains. The ADUM3154BRSZ is part of the ADuM315x family, which includes variants with different channel configurations and isolation ratings. The device is production-ready and available in tape and reel packaging. It is RoHS compliant and suitable for industrial, medical, and communication applications where reliable isolation is critical. Typical applications include isolated SPI interfaces in motor control, data acquisition systems, and industrial automation. The device's high CMTI ensures reliable operation in noisy environments, and its low propagation delay supports high-speed SPI communication. When designing with this device, proper PCB layout is essential to maintain isolation performance and minimize coupling between the two sides.

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ADUM3154BRSZ-RL7 - SPI Digital Isolator 3750Vrms | Analog Devices
ADUM3154BRSZ-RL7

ADUM3154BRSZ-RL7 - SPI Digital Isolator 3750Vrms | Analog Devices

The ADUM3154BRSZ-RL7 is a 3.75 kV, 7-channel SPIsolator digital isolator from Analog Devices, optimized for serial peripheral interface (SPI) applications. It supports up to four subordinate devices and is based on the iCoupler chip-scale transformer technology. The device provides low propagation delay and jitter in the CLK, MO/SI, MI/SO, and SS SPI bus signals, supporting SPI clock rates up to 17 MHz. It is available in a 20-lead SSOP package (0.209", 5.30mm width) and operates over a temperature range of -40°C to +125°C. A digital isolator is a component that provides galvanic isolation between two circuits while allowing digital signals to pass across the isolation barrier. It is used to protect sensitive electronics from high voltages, ground loops, and noise, and is essential in industrial, medical, and communication systems where safety and signal integrity are critical. Digital isolators are part of the broader category of isolation components, which also includes optocouplers and magnetic isolators. Key features of the ADUM3154BRSZ-RL7 include a 3750Vrms isolation rating, 4 forward channels and 3 reverse channels, a data rate of 34 Mbps, and a common-mode transient immunity (CMTI) of 25 kV/µs. The device operates with a supply voltage range of 3.0V to 3.6V on VDD1 and 4.5V to 5.5V on VDD2, ensuring compatibility with standard logic levels. The low propagation delay and jitter make it ideal for high-speed SPI communication. The ADUM3154BRSZ-RL7 uses iCoupler technology, which employs chip-scale transformers to transmit data across the isolation barrier. This technology offers advantages over optocouplers, including higher data rates, lower power consumption, and better reliability. The device also features a multiple-slave SPI configuration, allowing it to interface with up to four SPI slave devices without additional components. Typical applications include isolated SPI interfaces in industrial automation, motor control, data acquisition systems, and medical equipment. The device is also suitable for use in communication systems where galvanic isolation is required to protect against voltage transients and ground potential differences. When designing with this device, it is important to ensure proper PCB layout to minimize coupling across the isolation barrier. The datasheet recommends that any coupling that occurs should affect all pins equally on a given component side to prevent voltage differentials that could exceed absolute maximum ratings.

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ADUM3155BRSZ - 7-Channel SPI Digital Isolator | Analog Devices
ADUM3155BRSZ

ADUM3155BRSZ - 7-Channel SPI Digital Isolator | Analog Devices

The ADUM3155BRSZ is a 7-channel, SPIsolator digital isolator from Analog Devices, optimized for isolated serial peripheral interfaces (SPIs). It is based on the iCoupler chip-scale transformer technology, providing 3.75 kVrms isolation with a 25 kV/µs common-mode transient immunity (CMTI). The device supports SPI clock rates up to 17 MHz with a low propagation delay of 14 ns, making it ideal for high-speed isolated data acquisition and control systems. A digital isolator is a component that provides galvanic isolation between two circuits while allowing digital signals to pass across the isolation barrier. It is essential in applications where ground potential differences, noise, or safety requirements demand separation between the controller and the peripheral. Digital isolators are part of the broader category of isolation components, which also include optocouplers and magnetic isolators, and are widely used in industrial automation, medical equipment, and power electronics. The ADUM3155BRSZ features seven channels with a specific configuration: three forward channels (CLK, MO/SI, SS) and two reverse channels (MI/SO), plus two additional channels for general-purpose use. It operates from a 3.0V to 5.5V supply on both sides, with a maximum data rate of 34 Mbps. The device is available in a 20-lead SSOP package (0.209" width, 5.30mm) and is specified for the industrial temperature range of -40°C to +125°C. Key features include a 3.75 kVrms isolation voltage, 25 kV/µs CMTI, 14 ns propagation delay, and 34 Mbps data rate. The device also offers a 2.5V to 5.5V logic supply range, making it compatible with a wide variety of microcontrollers and FPGAs. The iCoupler technology ensures reliable operation in harsh environments, with no wear-out mechanism, unlike optocouplers. Typical applications include isolated SPI interfaces in industrial motor drives, isolated sensor data acquisition, isolated ADC/DAC interfaces, and isolated communication in medical and instrumentation systems. The high CMTI and low propagation delay make it suitable for high-speed, noise-prone environments. When designing with the ADUM3155BRSZ, ensure proper power supply decoupling on both sides with 0.1 µF capacitors close to the VDD pins. The input and output sides must have separate ground planes to maintain isolation integrity. The device is RoHS compliant and lead-free.

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ADUM3155BRSZ-RL7 - 7-Channel SPI Isolator 3750Vrms | Analog Devices
ADUM3155BRSZ-RL7

ADUM3155BRSZ-RL7 - 7-Channel SPI Isolator 3750Vrms | Analog Devices

The ADUM3155BRSZ-RL7 is a 7-channel, SPIsolator digital isolator from Analog Devices, optimized for isolated serial peripheral interfaces (SPIs). It provides 3750 Vrms isolation with a maximum data rate of 34 Mbps and a common-mode transient immunity (CMTI) of 25 kV/µs. The device is housed in a 20-lead SSOP package (0.209" width, 5.30 mm) and operates over the industrial temperature range of -40°C to +125°C. A digital isolator is a component that provides electrical isolation between two circuits while allowing digital signals to pass across the isolation barrier. It is essential in applications where ground potential differences, noise, or safety requirements demand galvanic isolation. The ADUM3155BRSZ-RL7 uses Analog Devices' iCoupler chip-scale transformer technology, which offers superior performance compared to optocouplers, including higher data rates, lower power consumption, and better reliability. Key features include a 34 Mbps data rate, 14 ns propagation delay, and 25 kV/µs CMTI, making it suitable for high-speed SPI communication in noisy industrial environments. The device supports 5 V operation on both sides (VDD1 and VDD2) and is available in a tape-and-reel package (RL7 suffix) for automated assembly. The ADUM3155BRSZ-RL7 is part of the ADuM315x family, which includes ADuM3151, ADuM3152, and ADuM3153 variants. These devices are designed to isolate SPI buses, providing low propagation delay and high data integrity. The iCoupler technology integrates micro-transformers and high-speed CMOS circuits, ensuring robust isolation and signal integrity. Typical applications include isolated SPI interfaces in industrial automation, motor control, data acquisition systems, and medical equipment. The device is also used in isolated power supplies and communication interfaces where ground loop isolation is critical. When designing with this device, ensure proper PCB layout to maintain isolation spacing and minimize parasitic capacitance. The SSOP package requires careful soldering to avoid thermal stress. For high-speed operation, keep traces short and use proper termination to maintain signal integrity.

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ADUM3160BRWZ - USB Digital Isolator 2.5kV, 12Mbps | Analog Devices
ADUM3160BRWZ

ADUM3160BRWZ - USB Digital Isolator 2.5kV, 12Mbps | Analog Devices

Analog Devices ADuM3160BRWZ is a USB port isolator built on iCoupler technology, providing 2500 Vrms galvanic isolation for full-speed and low-speed USB signals. It supports data rates up to 12 Mbps and offers 25 kV/µs common-mode transient immunity (CMTI) in a 16-SOIC (7.50 mm wide) package. A digital isolator is a component that transfers digital signals between circuits while preventing DC current flow and allowing different ground potentials. A USB digital isolator specifically isolates the D+ and D− lines of a USB port so that a host and peripheral can communicate without sharing a ground, eliminating ground loops and protecting against voltage transients. This type of component sits between the USB controller and the connector in the signal chain, preserving USB protocol behavior. Key features include 2500 Vrms isolation rating, 12 Mbps data rate, 25 kV/µs CMTI, and support for full-speed and low-speed USB devices. The monolithic air core transformer technology rejects high-speed common-mode noise better than optocouplers and provides stable performance over temperature. The wide SOIC-16 package allows easy PCB routing and is suitable for space-constrained boards. Architecturally, the ADuM3160 combines high-speed CMOS logic with micro-transformers on-chip, eliminating the need for external high-voltage isolation components. The device buffers and re-times D+ and D−, making it transparent to the USB host and peripheral. Because it isolates only the USB data lines, an isolated supply and VBUS management are still required on each side. Typical applications include medical patient-monitoring USB interfaces, industrial PLC programming ports, isolated data acquisition systems, USB DACs, and test instrumentation. The 12 Mbps throughput supports USB 1.1 and USB 2.0 full-speed operation, which covers most HID, CDC, and audio class devices. When designing with the ADuM3160, maintain proper supply decoupling on VDD1 and VDD2, keep the D+/D− traces impedance-controlled, and provide an isolated DC-DC supply to the secondary side. Verify that the total barrier capacitance meets the isolation requirements of the target safety standard.

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ADUM3160BRWZ-R - 2.5kV USB Digital Isolator, 12Mbps | Analog Devices
ADUM3160BRWZ-R

ADUM3160BRWZ-R - 2.5kV USB Digital Isolator, 12Mbps | Analog Devices

The Analog Devices ADUM3160BRWZ-R is a USB port isolator based on iCoupler technology, providing 2500 Vrms isolation with 12 Mbps full-speed USB signaling in a 16-pin SOIC-W (RW) wide-body package. It combines high-speed CMOS with monolithic air-core transformer technology to deliver robust galvanic isolation between upstream USB host and downstream peripheral devices, supporting both low-speed (1.5 Mbps) and full-speed (12 Mbps) USB operation while remaining USB 2.0 compatible. The -R suffix denotes the tape-and-reel packaging option. A USB digital isolator is a specialized galvanic isolation component that breaks the electrical ground connection between a USB host (PC, hub, or embedded controller) and a USB peripheral, while transparently passing the differential D+/D- data lines and providing isolated VBUS power. ADUM3160BRWZ-R belongs to the digital isolator IC family within interface ICs, sitting hierarchically under USB isolators > digital isolators > interface ICs > integrated circuits. This category is critical in medical, industrial, and test equipment where USB grounds create ground loops or expose sensitive downstream circuitry to fault voltages. Key features include 2500 Vrms reinforced isolation per UL 1577, 25 kV/us minimum common-mode transient immunity (CMTI), and 7 mA maximum upstream supply current at 1.5 Mbps with 8 mA at 12 Mbps. Operating from a 3.0 V to 5.5 V supply on the upstream side, the device draws minimal quiescent current and provides enhanced system-level ESD performance per IEC 61000-4-x. The wide-body SOIC-16 package offers 8 mm creepage/clearance for high-voltage safety compliance, far exceeding standard SOIC-8 isolators. Internal air-core transformers handle signal isolation, replacing optocouplers with higher bandwidth, lower power consumption, and superior CMTI performance. Typical applications span isolated USB peripherals, medical device USB ports (patient-connected equipment requiring 2500 V isolation), industrial USB data acquisition modules, USB-to-UART bridges with ground isolation, and test & measurement instruments where USB ground loops would corrupt measurements. Compared with optocoupler-based USB isolation schemes that require separate D+/D- isolators plus discrete drivers, the ADUM3160 integrates the complete USB isolation channel into a single chip, simplifying BOM and PCB layout. When designing with this part, place 0.1 uF bypass capacitors on both VDDP and VDD3.3 pins within 2 mm of the device. Verify that the application requires only low or full-speed USB - this device is NOT rated for 480 Mbps high-speed USB; for HighSpeed isolation consider ADUM3161 or external solutions. Maintain proper creepage distance on PCB and avoid routing signal traces beneath the package to preserve 2500 Vrms isolation integrity.

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ADUM3160BRWZ-RL - 2.5kV USB Digital Isolator 12Mbps SOIC-16 | Analog Devices
ADUM3160BRWZ-RL

ADUM3160BRWZ-RL - 2.5kV USB Digital Isolator 12Mbps SOIC-16 | Analog Devices

The Analog Devices ADUM3160BRWZ-RL is a 2.5 kV rms USB digital isolator based on Analog Devices iCoupler technology, supporting low-speed (1.5 Mbps) and full-speed (12 Mbps) USB signalling in a 16-pin SOIC-W (RW-16) wide-body surface-mount package. It integrates high-speed CMOS with monolithic air-core transformers to provide reinforced galvanic isolation across the USB D+/D- data pair, eliminating ground loops while preserving USB plug-and-play enumeration. The device operates with a working withstand voltage of 2.5 kV rms, common-mode transient immunity (CMTI) of 25 kV/us microsecond minimum, and draws typical quiescent current in the single-digit milliamp range from both VBUS1 and VBUS2 rails. A digital isolator is a device that transfers logic signals across a galvanically-isolated barrier using an internal chip-scale transformer, capacitive, or optical coupler. Within the broader IC taxonomy, the ADUM3160 occupies the digital isolator subcategory of interface ICs, which themselves sit under the power-management-and-isolation umbrella used in safety-critical systems. Unlike a generic multi-channel isolator, the ADUM3160 implements the USB-specific pull-up/pull-down and speed-selection logic required by the USB 1.1 specification, allowing it to transparently appear as a peripheral or directly to upstream port without host-side firmware changes. Key features include transparent USB 1.1 full/low-speed signalling, hardwired speed selection through dedicated SPD pin logic, integrated upstream/downstream pull-up and pull-down resistors matched to the USB electrical layer, and creep-supplied dual-side power domains that allow the host and device sides to operate from independently regulated 5 V or 3.3 V rails. These features allow drop-in insertion into existing USB-1.1-compliant PCB footprints without external logic translation. The 16-lead SOIC-W package provides a minimum 8 mm creepage distance along the package body, supporting the 2.5 kV rms isolation rating certified to UL, VDE, and IEC 61010-1 reinforced-insulation standards. Typical applications include isolated USB ports in industrial process control and factory automation, medical-device USB data acquisition with patient-protection isolation, USB-to-host isolation for test-and-measurement instrumentation, and isolated programming/debug interfaces for embedded targets operating in high-noise industrial environments. The wide-body SOIC package also supports 5 kV reinforced isolation variants in the ADUM3160 family by way of the ADuM3160/ADuM3161 derivatives. When designing with this device, place ferrite beads on VBUS1 and VBUS2 rails to suppress common-mode current noise on the upstream and downstream power domains, and observe the minimum 8 mm PCB creepage distance between the host-side and peripheral-side ground planes. The SPD pin must be hardwired to VBUS4 or GND to select full-speed or low-speed mode respectively; it cannot be changed dynamically after enumeration.

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ADUM3161BRWZ - USB Digital Isolator 2.5kV | Analog Devices
ADUM3161BRWZ

ADUM3161BRWZ - USB Digital Isolator 2.5kV | Analog Devices

The ADUM3161BRWZ is a USB digital isolator from Analog Devices, based on iCoupler technology. It provides galvanic isolation for USB signals, supporting full-speed (12 Mbps) and low-speed (1.5 Mbps) data rates. The device is housed in a 16-lead SOIC-W (wide body) package and offers 2.5 kVrms isolation voltage, making it suitable for applications requiring robust isolation between USB ports and host controllers. A USB digital isolator is a component that provides electrical isolation between a USB interface and the rest of the system, preventing ground loops, noise, and voltage spikes from damaging sensitive electronics. It uses magnetic or capacitive coupling to transfer data across an isolation barrier, ensuring signal integrity while maintaining safety. In the hierarchy of isolation components, a USB isolator is a specialized type of digital isolator, which falls under the broader category of interface ICs, which are part of integrated circuits. Key features of the ADUM3161BRWZ include a data rate of 12 Mbps (full-speed USB), 2.5 kVrms isolation voltage, and a common-mode transient immunity (CMTI) of 25 kV/µs. The device operates from a 3.0V to 5.5V supply on both sides, allowing flexible integration with various USB controllers. It also features an integrated DC-to-DC converter, eliminating the need for an external isolated power supply, which simplifies design and reduces component count. Technically, the ADUM3161BRWZ uses Analog Devices' iCoupler technology, which combines high-speed CMOS and monolithic air core transformers to achieve reliable isolation. The device provides two isolation channels: one for upstream data (D+ and D-) and one for downstream control signals. It also includes an integrated oscillator and rectifier to generate an isolated supply, ensuring proper operation without external power components. Typical applications include USB isolation in medical devices, industrial automation, and test equipment, where safety and noise immunity are critical. The device is also used in USB hubs and peripheral devices to prevent ground loops and protect against electrostatic discharge (ESD). When designing with the ADUM3161BRWZ, ensure proper PCB layout with adequate spacing between the isolated and non-isolated grounds. Place decoupling capacitors close to the VDD pins on both sides to minimize noise. The device is RoHS compliant and available in tape and reel packaging.

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ADUM3161BRWZ-RL7 - 6-Ch Digital Isolator 150Mbps | Analog Devices
ADUM3161BRWZ-RL7

ADUM3161BRWZ-RL7 - 6-Ch Digital Isolator 150Mbps | Analog Devices

The ADUM3161BRWZ-RL7 is a 6-channel digital isolator from Analog Devices, based on iCoupler technology. It provides galvanic isolation up to 3000Vrms and supports data rates up to 150Mbps with a common-mode transient immunity (CMTI) of 75kV/µs. The device is housed in a 16-lead SOIC-W package (0.295" width) and operates over a supply voltage range of 1.7V to 5.5V on both sides, making it suitable for low-voltage and mixed-voltage systems. Digital isolators are components that transfer digital signals across an isolation barrier, preventing DC current flow while allowing AC signals to pass. They are essential in applications requiring safety isolation, ground loop elimination, and level shifting. The ADUM3161BRWZ-RL7 uses monolithic air core transformers and CMOS technology, offering superior performance compared to optocouplers, including higher speed, lower power consumption, and better reliability. Key features include 6 independent isolation channels with a channel configuration of 5 forward and 1 reverse, a wide supply range of 1.7V to 5.5V, and a high data rate of 150Mbps. The device also features a CMTI of 75kV/µs, ensuring robust operation in noisy industrial environments. The SOIC-16 package provides a compact footprint for space-constrained designs. The ADUM3161BRWZ-RL7 is designed for use in industrial automation, motor control, and isolated communication interfaces. Its high-speed capability makes it ideal for SPI, UART, and other serial protocols requiring fast data transfer. The device is also suitable for medical equipment where patient isolation is critical. When designing with this isolator, ensure proper PCB layout with adequate creepage and clearance distances to maintain isolation ratings. Bypass capacitors should be placed close to the VDD pins to minimize noise. The device is RoHS compliant and operates over a temperature range of -40°C to +125°C.

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ADUM3190ARWZ-RL7 - 2.5kV Isolated Error Amplifier | Analog Devices
ADUM3190ARWZ-RL7

ADUM3190ARWZ-RL7 - 2.5kV Isolated Error Amplifier | Analog Devices

The ADUM3190ARWZ-RL7 is an isolated error amplifier from Analog Devices, based on iCoupler® technology. It is designed for linear feedback power supplies, providing a precise 1.225 V reference and a wide supply range of 3 V to 20 V on both sides. The device offers 400 kHz bandwidth and 2.5 kV rms isolation, making it suitable for isolated power conversion applications. An isolated error amplifier is a specialized amplifier that transfers an error signal across an isolation barrier without a direct electrical connection. It is a key component in isolated power supplies, where it compares the output voltage to a reference and sends the error signal to the primary-side controller. This enables regulation while maintaining galvanic isolation for safety and noise immunity. Key features include a 1.225 V reference voltage, compatibility with Type II or Type III compensation networks, and low power operation of less than 7 mA total. The device supports a wide supply range of 3 V to 20 V on both VDD1 and VDD2, and provides 400 kHz bandwidth. It is available in a 16-lead SOIC-W package, offering a compact solution for isolated feedback. The ADUM3190 uses iCoupler technology, which integrates micro-transformers to achieve isolation, eliminating the need for optocouplers and providing improved reliability and performance. The device is compatible with DOSA (Distributed-power Open Standards Alliance) standards, ensuring interoperability. It also meets safety approvals including UL 1577 and IEC/EN/CSA 62368-1. Typical applications include shunt regulators, linear power supplies, inverters, and uninterruptible power supplies (UPS). The device is ideal for isolated feedback in AC-DC and DC-DC converters, where precise regulation and isolation are critical. Its wide supply range and low power consumption make it suitable for both industrial and consumer power systems. When designing with the ADUM3190, ensure proper PCB layout to maintain isolation creepage and clearance distances. The device requires bypass capacitors on both supply pins to ensure stable operation. The reference voltage accuracy is critical for output regulation, so use precision resistors in the feedback network.

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ADUM3191ARWZ-RL7 - Isolated Error Amplifier | Analog Devices
ADUM3191ARWZ-RL7

ADUM3191ARWZ-RL7 - Isolated Error Amplifier | Analog Devices

The Analog Devices ADUM3191ARWZ-RL7 is an isolated error amplifier based on iCoupler technology, supplied in a 16-lead SOIC-W (RWZ) tape-and-reel package. It provides precision isolated voltage feedback for linear and switch-mode power supplies without depending on optocoupler current-transfer-ratio drift. The device integrates an error amplifier and a galvanic isolation barrier in one monolithic IC, simplifying PCB layout, reducing component count, and improving long-term stability. An isolated error amplifier is a specialized analog building block that compares a feedback voltage on one side of an isolation barrier with an internal reference and transmits a corrected error signal to the other side across the barrier. In the system hierarchy, it sits between the power-stage output and the PWM controller, replacing the optocoupler-plus-shunt-regulator feedback network. This category supports linear power supplies, inverters, UPS systems, DOSA-compatible modules, and voltage monitors. Key features include the monolithic iCoupler isolation interface, a small 16-lead SOIC-W surface-mount body, industrial operating temperature options, and integration of the error amplifier and isolation in a single component. The ADuM3190 family datasheet documents the architecture used for both QSOP and SOIC-W versions, and the -RL7 suffix indicates 2500-unit tape-and-reel packaging. Technical depth: iCoupler technology uses chip-scale transformers rather than LEDs and photodetectors, offering stable gain over temperature and age. Because the isolation barrier is integrated, no external high-voltage capacitor or optocoupler biasing circuit is required. This makes the ADUM3191ARWZ-RL7 particularly attractive for compact power modules where feedback-loop accuracy and long-term reliability are critical. Typical applications include isolated feedback for AC-DC and DC-DC supplies, solar inverter output voltage loops, UPS output regulation, industrial linear power supplies, motor-drive DC-link feedback, and battery charger voltage monitoring. Designers should confirm the exact isolation rating, reference voltage, and bandwidth for the ADUM3191ARWZ-RL7 from the latest ADuM3190/ADuM3191 datasheet before finalizing the design.

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ADUM3195ARWZ - Isolated Amplifier with Adjustable Gain | Analog Devices
ADUM3195ARWZ

ADUM3195ARWZ - Isolated Amplifier with Adjustable Gain | Analog Devices

The ADUM3195ARWZ is an isolated amplifier with adjustable gain and single-ended output from Analog Devices. It is designed for precision voltage and current sensing in isolated power supply feedback loops, motor control, and industrial automation. The device provides galvanic isolation up to 3000 V rms, ensuring safe signal transfer across isolation barriers. It operates from dual supplies: VDD1 and VDD2, each ranging from 4.5 V to 5.5 V. The bandwidth is 210 kHz, making it suitable for high-speed control loops. The ADUM3195ARWZ comes in a 16-lead SOIC (RW-16) package, offering a compact solution for space-constrained designs. An isolated amplifier is a type of amplifier that provides electrical isolation between its input and output stages, preventing dangerous voltages or ground loops from affecting the signal path. It is a critical component in applications where safety and noise immunity are paramount, such as in medical devices, industrial motor drives, and power conversion systems. The isolation barrier is typically implemented using capacitive or magnetic coupling, allowing signal transfer without a direct electrical connection. This enables the amplifier to measure voltages or currents across a high-voltage boundary while maintaining signal integrity and protecting low-voltage control circuitry. Key features of the ADUM3195ARWZ include adjustable gain, which allows designers to set the amplification factor according to their specific sensing requirements. The single-ended output simplifies interfacing with ADCs and microcontrollers. The device also offers excellent common-mode transient immunity, ensuring reliable operation in noisy industrial environments. The 210 kHz bandwidth supports fast transient response, essential for stable feedback loops in switching power supplies. The wide supply range of 4.5 V to 5.5 V on both sides provides flexibility in system design. Technically, the ADUM3195ARWZ uses Analog Devices' iCoupler technology, which integrates isolation and amplification in a single chip. This technology uses chip-scale transformers to transmit signals across the isolation barrier, offering superior performance compared to optocouplers, including higher speed, lower power consumption, and better reliability. The adjustable gain is implemented via an external resistor network, allowing precise control over the amplification factor. The device also features a reference output, which can be used to set the common-mode voltage of the output signal. Typical applications include isolated voltage sensing in AC-DC and DC-DC converters, current sensing in motor drives, and isolated signal conditioning in industrial process control. The ADUM3195ARWZ is also used in battery management systems and solar inverters, where isolation is required for safety and noise reduction. Its high bandwidth and adjustable gain make it ideal for closed-loop control systems that require accurate and fast feedback. When designing with the ADUM3195ARWZ, it is important to ensure proper decoupling on both supply pins and to place the external gain-setting resistors close to the device to minimize parasitic capacitance. The layout should also maintain adequate creepage and clearance distances on the PCB to meet isolation safety standards.

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ADUM3195ARWZ-RL7 - Isolated Amplifier | Analog Devices
ADUM3195ARWZ-RL7

ADUM3195ARWZ-RL7 - Isolated Amplifier | Analog Devices

The ADuM3195ARWZ-RL7 is an isolation amplifier based on Analog Devices' iCoupler® technology, designed for isolated voltage sensing applications. It features very low offset and gain error, making it ideal for precision isolated feedback in power supplies, motor drives, and industrial control systems. The device provides a single-ended output and adjustable gain, allowing flexible configuration for various sensing ranges. It is available in a 16-lead SOIC-W package, suitable for surface-mount assembly. An isolation amplifier is a type of amplifier that provides electrical isolation between its input and output stages, typically using capacitive or magnetic coupling. This isolation protects sensitive control circuitry from high voltages, ground loops, and noise, while maintaining signal integrity. In the hierarchy of signal conditioning, an isolation amplifier falls under analog front-end components, which are essential in industrial and automotive applications where safety and reliability are paramount. Key features of the ADuM3195 include a wide input common-mode voltage range, high common-mode transient immunity, and low power consumption. The device operates over a wide temperature range, making it suitable for harsh environments. Its adjustable gain allows designers to optimize the output swing for specific ADC inputs, reducing the need for external scaling components. Technically, the ADuM3195 uses iCoupler technology, which employs chip-scale transformers to transmit signals across the isolation barrier. This approach offers advantages over optocouplers, such as higher speed, better reliability, and no LED degradation over time. The device also includes an internal reference and output amplifier, simplifying the external circuit design. Typical applications include isolated voltage sensing in switch-mode power supplies, motor control, and battery monitoring systems. The ADuM3195 is also used in isolated data acquisition systems where ground loop isolation is critical. Its low offset and gain error ensure accurate measurement, which is essential for closed-loop control. When designing with the ADuM3195, it is important to provide proper power supply decoupling and to follow the recommended layout guidelines to maintain isolation performance. The device requires a separate ground plane for the input and output sides to achieve the specified common-mode transient immunity.

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ADUM3196ARWZ - Isolated Error Amplifier | Analog Devices
ADUM3196ARWZ

ADUM3196ARWZ - Isolated Error Amplifier | Analog Devices

The ADUM3196ARWZ is an isolated error amplifier from Analog Devices, designed for use in isolated power supply feedback loops. It combines a precision error amplifier with an integrated digital isolator, providing a compact solution for voltage regulation across an isolation barrier. The device operates from a single 3.0V to 20V supply on the primary side and supports a secondary-side supply from 3.0V to 20V, making it versatile for various power conversion topologies. An isolated error amplifier is a specialized component that amplifies the difference between a reference voltage and a feedback signal while providing galvanic isolation between the input and output. This isolation is critical in power supplies where the primary and secondary sides must be electrically separated for safety and noise immunity. The ADUM3196ARWZ integrates this function into a single SOIC-16 package, reducing board space and component count compared to discrete solutions. Key features of the ADUM3196ARWZ include a 400 kHz bandwidth, a typical offset voltage of 0.5 mV, and a gain of 1 V/V. The device provides reinforced isolation with a working voltage of 1000 Vrms and a transient immunity of 25 kV/us, ensuring reliable operation in harsh industrial environments. It also features an internal 1.0V reference, simplifying the design of feedback networks. The ADUM3196ARWZ uses Analog Devices' iCoupler technology, which integrates magnetic isolation with analog circuitry on a single chip. This architecture provides precise signal transfer across the isolation barrier without the need for external optocouplers or separate isolation amplifiers. The device is designed for high reliability, with a typical isolation lifetime of 50 years at 1000 Vrms working voltage. Typical applications include isolated DC-DC converters, AC-DC power supplies, and isolated voltage sensing in industrial, automotive, and telecommunications systems. The device is particularly suited for applications requiring high accuracy and stability over temperature, such as server power supplies and battery chargers. When designing with the ADUM3196ARWZ, ensure proper PCB layout to maintain isolation spacing and minimize parasitic capacitance. The device requires a bypass capacitor on both supply pins, and the feedback network should be placed close to the error amplifier inputs to reduce noise pickup.

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ADUM3196ARWZ-RL7 - Isolated Error Amplifier | Analog Devices
ADUM3196ARWZ-RL7

ADUM3196ARWZ-RL7 - Isolated Error Amplifier | Analog Devices

The ADUM3196ARWZ-RL7 is an isolated error amplifier with adjustable gain and single-ended output from Analog Devices, designed for shunt regulator, linear power supply, inverter, and UPS applications. It integrates Analog Devices' iCoupler technology to provide galvanic isolation between the primary and secondary sides, eliminating the need for optocouplers and improving reliability and performance. The device operates from a 3.0 V to 20 V supply on the primary side and 3.0 V to 20 V on the secondary side, with a typical quiescent current of 1.2 mA. It offers a bandwidth of 200 kHz and a gain accuracy of ±1%, making it suitable for precise voltage and current sensing in isolated power conversion systems. An isolated error amplifier is a specialized amplifier that provides electrical isolation between its input and output while maintaining accurate signal transfer. It is commonly used in isolated power supplies to sense output voltage or current and feed back a control signal across the isolation barrier. The ADUM3196ARWZ-RL7 belongs to the category of isolation amplifiers, which are part of the broader family of analog signal conditioning ICs. These components are essential in applications requiring safety isolation, noise immunity, and ground loop elimination. Key features of the ADUM3196ARWZ-RL7 include a wide input common-mode voltage range of -0.3 V to 20 V, a fixed gain of 1 V/V (adjustable with external resistors), and a high common-mode transient immunity of 25 kV/µs. The device is available in a 16-lead SOIC (RW-16) package, which is compact and suitable for space-constrained designs. It also features an internal reference of 1.2 V and a shutdown pin for power saving. The operating temperature range is -40°C to +125°C, making it suitable for industrial and automotive environments. Technically, the ADUM3196ARWZ-RL7 uses a proprietary iCoupler transformer-based isolation technology, which offers superior performance compared to optocouplers, including higher speed, better temperature stability, and longer lifespan. The device includes an internal voltage reference and an error amplifier with a transconductance output stage, allowing direct connection to a shunt regulator or a PWM controller. The gain can be set externally using two resistors, providing design flexibility. The output is single-ended, simplifying interface with downstream control circuits. Typical applications include isolated voltage sensing in AC-DC power supplies, isolated current sensing in motor drives, and feedback control in solar inverters. The device is also used in battery management systems and industrial automation where galvanic isolation is required. Its high common-mode transient immunity ensures reliable operation in noisy environments. When designing with the ADUM3196ARWZ-RL7, it is important to provide adequate decoupling on both supply pins and to ensure that the isolation barrier is not stressed beyond its rated voltage. The gain-setting resistors should be precision types to maintain accuracy. The device is RoHS compliant and lead-free, meeting environmental standards.

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