ADUM3160BRWZ - USB Digital Isolator 2.5kV, 12Mbps | Analog Devices
MPN: ADUM3160BRWZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.3838 | $4.38 |
| 10 | $4.1 | $41.00 |
| 100 | $3.8 | $380.00 |
| 500 | $3.45 | $1,725.00 |
| 1,000 | $3.1 | $3,100.00 |
| 3,000 | $2.9 | $8,700.00 |
ADUM3160BRWZ Overview
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.
Drop-in alternatives for ADUM3160BRWZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ADUM3160BRWZ (same form factor and footprint) — differing in Data Rate, Number of Channels, Technology, Isolation Rating.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADUM4160BRWZ
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ADUM3165BRWZ
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ADUM3166BRWZ
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ADUM4165BRWZ
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ADUM4166BRWZ
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ISOUSB111DWR
⚡ Same Package ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ADUM3160BRWZ Specifications
| Isolation Type | USB Digital Isolator |
| Technology | iCoupler (monolithic air core transformer) |
| Isolation Rating | 2500 Vrms |
| Number of Channels | 1 |
| Data Rate | 12 Mbps |
| CMTI | 25 kV/µs |
| USB Speed Support | Full Speed / Low Speed |
| Package | 16-SOIC (0.295", 7.50mm Width) |
| Number of Pins | 16 |
| Package Width | 7.50 mm |
| Mounting Type | Surface Mount |
| Series | ADuM3160 |
ADUM3160BRWZ 7.50 mm Pin Configuration Guide
Pin configuration for ADUM3160BRWZ (7.50 mm package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for ADUM3160BRWZ.
Refer to the datasheet for full pin configuration.
Typical Applications
ADUM3160BRWZ is suitable for 6 applications: Medical Device USB Isolation, Industrial PLC and HMI USB Programming Ports, USB Data Acquisition (DAQ) Isolated Input, Test and Measurement Instrumentation, Battery-Powered / Portable Isolated USB Hub, Consumer USB Audio / DAC Isolation.
Medical Device USB Isolation
The ADuM3160BRWZ's 2500Vrms isolation and 12Mbps data rate allow full-speed USB signals to cross a safety barrier. In ECG or patient monitoring, the isolator sits between the PC host and the measurement front-end; the AD7984 18-bit ADC digitizes bio-signals, while the AD8620 amplifies them. The iCoupler transformers avoid optocoupler LED aging and provide high CMTI, reducing ground-loop noise. Barrier capacitance must be kept low for medical leakage requirements.
Recommended
Industrial PLC and HMI USB Programming Ports
In factories, a USB isolator prevents ground potential differences and surges from damaging PLC/HMI programming ports. The ADuM3160's 25kV/us CMTI rejects transients from motors and variable-frequency drives. 12Mbps supports USB 1.1/full-speed firmware downloads. For serial fieldbus, pair with ADM2483 isolated RS-485 transceiver. Use filtered VBUS and TVS on the upstream side.
Recommended
USB Data Acquisition (DAQ) Isolated Input
High-resolution data acquisition needs isolation to break ground loops. Place ADuM3160BRWZ between the USB controller and isolated analog front end; its 12Mbps throughput supports streaming 18-bit ADC results. Pair with AD7984 18-bit SAR ADC and AD8429 instrumentation amplifier for precision sensing. The isolated side may use an isolated DC-DC converter; 2500Vrms rating suits bench test environments.
Recommended
Test and Measurement Instrumentation
Test equipment such as oscilloscopes and data loggers use USB for host control but must maintain isolation. ADuM3160's low skew and 12Mbps data rate preserve USB signaling. Use ADR4525 as a precision reference on the isolated analog side with AD8620 op amps. 2500Vrms and 25kV/us CMTI maintain signal integrity during probe switching and ESD events.
Recommended
Battery-Powered / Portable Isolated USB Hub
Portable sensors and IoT nodes may need isolated USB for configuration or data retrieval. The low-power profile of ADuM3160 on the cable side and 2.5kV isolation protect the host. 12Mbps allows quick firmware updates. Pair with AD8605 precision op amps and an isolated DC-DC power supply. CMTI 25kV/us ensures operation near motors or relays.
Recommended
Consumer USB Audio / DAC Isolation
USB audio devices often suffer ground-loop hum. ADuM3160BRWZ isolates D+/D- lines between PC and DAC at 12Mbps, sufficient for USB Audio Class 1. Its iCoupler isolation reduces digital noise coupling into analog stages. Pair with AD8620 or ADA4610-2 op amps for output filtering. 2500Vrms isolation helps pass safety tests.
Recommended
Recommended Products Summary
Engineering reference data for ADUM3160BRWZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM4160BRWZ | ADUM3165BRWZ | ADUM3166BRWZ | ADUM4165BRWZ | ADUM4166BRWZ | ISOUSB111DWR |
|---|---|---|---|---|---|---|---|
| Package | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) | SOIC-16 (DWR) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Data Rate | 12 Mbps | 12 Mbps | 12 Mbps | 12 Mbps | 12 Mbps | 12 Mbps | 12 Mbps |
| USB Speed | Full Speed / Low Speed | Full Speed / Low Speed | Full Speed | Full Speed | Full Speed | Full Speed | Full Speed |
| Integrated DC-DC Converter | No | No | No | Yes | No | Yes | Yes |
Key Differentiators
- 2500 Vrms basic isolation in a compact wide SOIC-16 package (vs ADUM4160BRWZ)
- 12 Mbps full-speed USB optimization (vs generic optocoupler-based isolator)
- Lower cost without integrated DC-DC converter (vs ADUM3166BRWZ)
Design Notes
The ADuM3160BRWZ does not include an integrated DC-DC converter. Provide isolated supply rails on both VDD1 and VDD2, typically 3.3 V or 5 V, and decouple each supply with 0.1 µF and 10 µF capacitors. If VBUS is used to power the isolated side, add a regulator because VBUS is usually 5 V and may be noisy.
Route D+ and D− as a differential pair with controlled impedance near 90 Ω. Keep the isolation barrier void clear underneath the SOIC package to maintain specified creepage/clearance. Place decoupling capacitors as close as possible to VDD1 and VDD2 pins, and avoid routing any digital traces across the barrier gap.
Do not exceed 12 Mbps when using this isolator; higher-speed USB 2.0 (480 Mbps) is not supported. Ensure that both sides have a valid ground reference and that the isolated 5 V supply is not left floating. Also confirm the pinout from the ADuM3160 datasheet before designing the PCB.
Compliance Information
Compliance information was not included in the verified web data. Refer to the ADuM3160 datasheet or ADI product page for current RoHS/REACH declarations.