ADUM320N

RECOMMENDED FOR NEW DESIGNS

5.7 kV RMS/3.0 kV RMS Dual Digital Isolators

Analog Devices ADUM320N Product Info

10 February 2026 5

Features

High common-mode transient immunity: 180 kV/µs typical
High robustness to radiated and conducted noise
Low propagation delay
- 2 ns typical (10 ns maximum) for 5 V operation
Low dynamic power consumption, <1.65 mA/ch at 1 Mbps
25 V to 5.5 V level translation
150 Mbps maximum guaranteed data rate
High temperature operation: 125°C
Safety and regulatory approvals
- DIN EN IEC 60747-17 (VDE 0884-17)

UL 1577
- V_ISO = 3000 V rms for 1 minute, SOIC_N (R-8)
- V_ISO = 5700 V rms for 1 minute, SOIC_IC (RI-8-1)

IEC/EN/CSA 62368-1
IEC/CSA 61010-1
IEC/CSA 60601-1
CQC GB4943.1

±8 kV IEC 61000-4-2 ESD protection across isolation barrier
±4 kV HBM ESD protection on input/output pins
Fail-safe high (N1) or low (N0) options
SOIC_N Backward compatibility with
AEC-Q100 qualified for automotive applications
Operating temperature range: −40°C to +125°C

Part details & applications

The ADuM320N/ADuM321N are dual-channel digital isolators based on Analog Devices, Inc., iCoupler^® technology. Combining high speed, complementary metal-oxide semiconductor (CMOS) and monolithic air core transformer technology, these isolation components provide outstanding performance characteristics and meet CISPR 32/EN 55032 Class B limits at 5 Mbps. The maximum propagation delay is 10 ns with a pulse width distortion of less than 3 ns at 5 V operation. Channel matching is hard at 3.0 ns maximum.

The ADuM320N/ADuM321N data channels are independent and are available in a variety of configurations with a withstand voltage rating of 5.7 kV RMS and 3.0 kV RMS (for more information, see the Ordering Guide section of the data sheet). The devices operate with the supply voltage on either side ranging from 2.25 V to 5.5 V, providing compatibility with lower voltage systems as well as enabling voltage translation functionality across the isolation barrier.

Two different fail-safe options are available, by which the outputs transition to a predetermined state when the input power supply is not applied.

Applications

Inverters
Power supplies
Industrial field bus isolation
PWM controller signal isolation
General-purpose multichannel isolation

Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329. Other patents are pending.

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