Analog Devices

ADUM3161BRWZ - USB Digital Isolator 2.5kV | Analog Devices

Name: ADUM3161BRWZ
Brand: Analog Devices
Price: 3.4 USD
Availability: InStock

MPN: ADUM3161BRWZ ✓ Active

In Stock Ships in 1-3 business days

2500 Vrms Vdss 16-SOIC (0.295", 7.50mm Width) Package

From $3.4 USD / Unit

MOQ: 1 |

Price updated: 2026-08-23

Volume Pricing

Qty	Unit Price	Extended
1	$4.38	$4.38
10	$4.1	$41.00
100	$3.85	$385.00
500	$3.6	$1,800.00
1,000	$3.4	$3,400.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for ADUM3161BRWZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

ADUM3160BRWZ

✅ Drop-In

Analog Devices

📦 16-SOIC (0.295", 7.50mm Width)

USB Digital Isolator · iCoupler (monolithic air core transformer) · 2500 Vrms · 1 · 12 Mbps · 25 kV/µs · Full Speed / Low Speed · 16-SOIC (0.295", 7.50mm Width)

✓ In Stock

$2.9 / Unit

View Datasheet →

ADUM3165BRWZ

✅ Drop-In

📦 16-SOIC (0.295", 7.50mm Width)

Higher data rate (480 Mbps) but same package and pinout

📋 Reference alternative (not in catalog)

ADUM3161BRWZ-RL

✅ Drop-In

📦 16-SOIC (0.295", 7.50mm Width)

Same die, tape and reel packaging variant

📋 Reference alternative (not in catalog)

ADUM3161BRWZ-RL7

✅ Drop-In

Analog Devices

📦 16-SOIC (0.295", 7.50mm Width)

6 · 5/1 (5 forward, 1 reverse) · 3000 Vrms · 150 Mbps · 75 kV/µs · 1.7 V to 5.5 V · 1.7 V to 5.5 V · [DATA_NEEDED: Propagation Delay]

✓ In Stock

$2.88 / Unit

View Datasheet →

ℹ️ 1 cross-package part(s) hidden — different package requires PCB rework and is not a true drop-in replacement. Contact us if you need cross-package suggestions.

ADUM3161BRWZ Maximum Ratings & Electrical Characteristics

Isolation Voltage	2500 Vrms
Data Rate	12 Mbps (full-speed USB)
Number of Channels	1 (bidirectional)
Common-Mode Transient Immunity (CMTI)	25 kV/µs
Supply Voltage (VDD1)	3.0 V to 5.5 V
Supply Voltage (VDD2)	3.0 V to 5.5 V
Isolation Rating	2.5 kVrms
Package	16-SOIC (0.295", 7.50mm Width)
Operating Temperature Range	-40°C to +105°C
Propagation Delay	[DATA_NEEDED: propagation delay]
Power Consumption	[DATA_NEEDED: power consumption]
RoHS Status	Compliant
Mounting Type	Surface Mount
Number of Pins	16
Technology	iCoupler

ADUM3161BRWZ Pin Configuration

Pin 1	VDD1 — Primary supply voltage (3.0V to 5.5V)
Pin 2	GND1 — Primary ground
Pin 3	D+ — USB data plus
Pin 4	D- — USB data minus
Pin 5	NC — No connect
Pin 6	NC — No connect
Pin 7	GND1 — Primary ground
Pin 8	VDD1 — Primary supply voltage
Pin 9	VDD2 — Secondary supply voltage (3.0V to 5.5V)
Pin 10	GND2 — Secondary ground
Pin 11	D+ — USB data plus (isolated side)
Pin 12	D- — USB data minus (isolated side)
Pin 13	NC — No connect
Pin 14	NC — No connect
Pin 15	GND2 — Secondary ground
Pin 16	VDD2 — Secondary supply voltage

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

ADUM3161BRWZ is suitable for 6 applications: Medical Device USB Isolation, Industrial Automation USB Isolation, Test and Measurement Equipment, USB Hub Isolation, Consumer Electronics USB Isolation, Automotive USB Isolation.

💊

Medical Device USB Isolation

The ADUM3161BRWZ provides 2.5kVrms isolation for USB connections in medical devices, ensuring patient safety by preventing leakage currents. Its integrated DC-DC converter simplifies power supply design, and its 12 Mbps data rate supports full-speed USB peripherals like diagnostic sensors and imaging equipment. The high CMTI of 25 kV/µs ensures reliable operation in electrically noisy hospital environments.

Recommended

🏭

Industrial Automation USB Isolation

In industrial automation, the ADUM3161BRWZ isolates USB interfaces from high-voltage transients and ground loops, protecting PLCs and HMI panels. Its 2.5kVrms isolation and 25 kV/µs CMTI handle harsh electrical environments. The integrated DC-DC converter reduces board space, and the wide supply range (3.0V to 5.5V) allows flexible integration with various microcontrollers.

Recommended

ADUM3160BRWZ · Analog Devices AD8620ARZ · Analog Devices

🔧

Test and Measurement Equipment

The ADUM3161BRWZ is ideal for isolating USB ports in oscilloscopes, data loggers, and signal generators. It prevents ground loops that can distort measurements and protects sensitive front-end electronics from ESD. The 12 Mbps data rate is sufficient for control and data transfer, and the integrated power supply simplifies design in compact instruments.

Recommended

ADUM3160BRWZ · Analog Devices ADA4950-2YCPZ · Analog Devices

🌐

USB Hub Isolation

The ADUM3161BRWZ can be used in USB hubs to isolate downstream ports, preventing fault propagation and improving system reliability. Its integrated DC-DC converter eliminates the need for multiple isolated supplies, reducing cost and complexity. The device supports full-speed USB, making it suitable for most peripherals.

Recommended

ADUM3160BRWZ · Analog Devices AD8627ARZ · Analog Devices

📺

Consumer Electronics USB Isolation

In consumer electronics, the ADUM3161BRWZ isolates USB connections in devices like smart TVs and gaming consoles, protecting against ESD and reducing noise. Its compact SOIC package and integrated power make it suitable for space-constrained designs. The 12 Mbps data rate supports standard USB peripherals.

Recommended

ADUM3160BRWZ · Analog Devices ADA4610-2ARZ · Analog Devices

🚗

Automotive USB Isolation

The ADUM3161BRWZ can be used in automotive infotainment systems to isolate USB ports from the vehicle's electrical system, preventing ground loops and protecting against voltage transients. Its wide supply range and high CMTI make it suitable for automotive environments. However, it is not AEC-Q100 qualified, so for automotive-grade applications, consider the ADUM3161BRWZ-Q1 if available.

Recommended

ADUM3160BRWZ · Analog Devices ADA4897-2ARMZ · Analog Devices

Recommended Products Summary

ADUM3160BRWZ Analog Devices Used in: Medical Device USB Isolation, Industrial Automation USB Isolation, Test and Measurement Equipment, USB Hub Isolation, Consumer Electronics USB Isolation, Automotive USB Isolation AD8627ARZ Analog Devices Used in: Medical Device USB Isolation, USB Hub Isolation AD8620ARZ Analog Devices Used in: Industrial Automation USB Isolation ADA4950-2YCPZ Analog Devices Used in: Test and Measurement Equipment ADA4610-2ARZ Analog Devices Used in: Consumer Electronics USB Isolation ADA4897-2ARMZ Analog Devices Used in: Automotive USB Isolation

What is the isolation voltage of ADUM3161BRWZ?

The ADUM3161BRWZ provides 2500 Vrms isolation voltage. According to the Analog Devices ADuM3160 datasheet, this isolation rating ensures safe separation between USB signals and the host system, protecting against voltage spikes and ground loops.

What is the data rate supported by ADUM3161BRWZ?

The ADUM3161BRWZ supports data rates up to 12 Mbps, which is full-speed USB. It also supports low-speed USB at 1.5 Mbps. This makes it suitable for isolating USB peripherals that operate at standard USB speeds.

What is the price of ADUM3161BRWZ?

As of 2026-08-23, the ADUM3161BRWZ is priced at approximately $4.38 for single-unit quantities, with volume pricing dropping to around $3.40 at 1000 units. Prices may vary by distributor and availability.

Where can I buy ADUM3161BRWZ online?

The ADUM3161BRWZ is available from major distributors such as DigiKey, Mouser, and LCSC. For example, LCSC lists it at $4.3838. Check current stock and pricing on these platforms for the best availability.

What is the lead time for ADUM3161BRWZ?

Lead time for ADUM3161BRWZ typically ranges from 1 to 4 weeks depending on distributor stock and order quantity. As of 2026-08-23, DigiKey shows it as 'ships today' for in-stock items, but larger orders may require additional lead time.

Is ADUM3161BRWZ in stock?

As of 2026-08-23, the ADUM3161BRWZ is in stock at several distributors including DigiKey and LCSC. However, stock levels can change rapidly, so it is advisable to check current availability on distributor websites.

ADUM3161BRWZ vs ADUM3160BRWZ - what is the difference?

The ADUM3161BRWZ and ADUM3160BRWZ are both USB digital isolators from Analog Devices with similar specifications. The key difference is that the ADUM3161BRWZ includes an integrated DC-to-DC converter, while the ADUM3160BRWZ requires an external isolated power supply. This makes the ADUM3161BRWZ more compact and easier to design with.

When should I choose ADUM3161BRWZ over ADUM3160BRWZ?

Choose the ADUM3161BRWZ when you need a complete isolation solution with minimal external components, such as in space-constrained designs or when you want to simplify the power supply design. Choose the ADUM3160BRWZ if you prefer to use an external isolated power supply for greater flexibility or if you need to meet specific isolation requirements.

What is the best drop-in replacement for ADUM3161BRWZ?

The best drop-in replacement for ADUM3161BRWZ is the ADUM3160BRWZ, which is pin-compatible and shares the same 16-SOIC package. However, the ADUM3160BRWZ lacks the integrated DC-to-DC converter, so you would need to add an external isolated power supply. For a true drop-in with integrated power, consider the ADUM3165BRWZ if available.

Where can I download the ADUM3161BRWZ datasheet PDF?

The ADUM3161BRWZ datasheet is available from the Analog Devices website at https://www.analog.com/media/en/technical-documentation/data-sheets/ADuM3160.pdf. You can also find it on distributor sites like DigiKey and Octopart.

Where can I find the ADUM3161BRWZ pinout?

The ADUM3161BRWZ pinout is detailed in the datasheet available from Analog Devices. The device is in a 16-pin SOIC-W package, with pins for VDD1, GND1, D+, D-, and VDD2, GND2, and other control signals. Refer to the datasheet for the exact pin configuration.

Hey Google, what can replace ADUM3161BRWZ?

The ADUM3161BRWZ can be replaced by the ADUM3160BRWZ, which is pin-compatible but requires an external isolated power supply. Other alternatives include the ISOUSB211 from Texas Instruments, which is a USB 2.0 isolator with integrated power, but it is not pin-compatible and requires a different PCB layout.

Is ADUM3161BRWZ the same as ADUM3160BRWZ?

No, the ADUM3161BRWZ and ADUM3160BRWZ are not the same. The ADUM3161BRWZ includes an integrated DC-to-DC converter, while the ADUM3160BRWZ does not. They are pin-compatible and share the same package, but the ADUM3161BRWZ offers a more integrated solution.

What are the key specifications of ADUM3161BRWZ that engineers should know?

Engineers should know that the ADUM3161BRWZ provides 2500 Vrms isolation, supports 12 Mbps full-speed USB, and has a CMTI of 25 kV/µs. It operates from 3.0V to 5.5V on both sides and includes an integrated DC-to-DC converter, simplifying design. The device is RoHS compliant and available in a 16-SOIC package.

What is the best Texas Instruments equivalent for ADUM3161BRWZ?

The best Texas Instruments equivalent for ADUM3161BRWZ is the ISOUSB211, which is a USB 2.0 isolator with integrated power. However, it is not pin-compatible and comes in a different package (VQFN), so it requires a PCB redesign. For a drop-in replacement, stick with the ADUM3160BRWZ.

Engineering reference data for ADUM3161BRWZ — comparison, design guidance, and compliance information.

Selection Guide

Choose the ADUM3161BRWZ when you need a complete USB isolation solution with integrated power, simplifying design and saving board space. It is ideal for applications requiring full-speed USB (12 Mbps) and 2.5kVrms isolation, such as medical devices, industrial automation, and test equipment. If you do not need integrated power and prefer to use an external isolated supply, the ADUM3160BRWZ is a cost-effective alternative. For high-speed USB (480 Mbps) applications, consider the ADUM3165BRWZ, but verify pin compatibility. If you require higher isolation (5kVrms) and are willing to redesign the PCB, the ISOUSB211 from Texas Instruments is a viable option.

Comparison with Alternatives

Parameter	This Product	ADUM3160BRWZ	ADUM3165BRWZ	ISOUSB211
Package	16-SOIC (0.295", 7.50mm Width)	16-SOIC (0.295", 7.50mm Width) - same	16-SOIC (0.295", 7.50mm Width) - same	VQFN (different)
Brand	Analog Devices	Analog Devices	Analog Devices	Texas Instruments
Isolation Voltage	2500 Vrms	2500 Vrms	2500 Vrms	5000 Vrms
Data Rate	12 Mbps	12 Mbps	480 Mbps	480 Mbps
Integrated DC-DC Converter	Yes	No	Yes	Yes
CMTI	25 kV/µs	25 kV/µs	25 kV/µs	100 kV/µs
Supply Voltage Range	3.0V to 5.5V	3.0V to 5.5V	3.0V to 5.5V	3.0V to 5.5V
Operating Temperature Range	-40°C to +105°C	-40°C to +105°C	-40°C to +105°C	-40°C to +125°C

Key Differentiators

Integrated DC-DC converter (vs ADUM3160BRWZ)
Full-speed USB support (vs ADUM3165BRWZ)
Same package as ADUM3160BRWZ (vs ISOUSB211)

Design Notes

Ensure proper PCB layout with adequate spacing between the isolated and non-isolated grounds. Place decoupling capacitors (0.1 µF and 10 µF) close to the VDD1 and VDD2 pins to minimize noise. Use a solid ground plane on each side of the isolation barrier.

The integrated DC-DC converter requires careful consideration of the input supply. Ensure the input voltage is within the specified range (3.0V to 5.5V) and can provide sufficient current for the isolated side. Add a ferrite bead in series with the input supply to reduce high-frequency noise.

Do not exceed the absolute maximum ratings for isolation voltage or supply voltage. Ensure that the USB data lines are properly terminated and that the device is not subjected to voltages beyond its ratings. Also, verify that the external components (if any) are compatible with the integrated DC-DC converter.