Data Sheet
ADuM320N/ADuM321N
5.7 kV RMS/3.0 kV RMS Dual Digital Isolators
FEATURES
GENERAL DESCRIPTION
► High common-mode transient immunity: 180 kV/µs typical
► High robustness to radiated and conducted noise
► Low propagation delay
► 6.2 ns typical (10 ns maximum) for 5 V operation
► Low dynamic power consumption, <1.65 mA/ch at 1 Mbps
► 2.25 V to 5.5 V level translation
► 150 Mbps maximum guaranteed data rate
► High temperature operation: 125°C
► Safety and regulatory approvals
► UL recognition per UL1577
► 5700 V rms (SOIC_IC)
► 3000 V rms (SOIC_N)
► VDE certificate of conformity
► VIORM = 1173 VPEAK (SOIC_IC)
► VIORM = 636 VPEAK (SOIC_N)
► CSA component certification per IEC 62368-1, IEC60601-1,
and IEC 61010-1
► TÜV SÜD component certification per EN 62368-1
► CQC component certification per GB4943.1-2022
► ±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
The ADuM320N/ADuM321N1 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). 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.
FUNCTIONAL BLOCK DIAGRAMS
► SOIC_N Backward compatibility with
► ADuM1200/ADuM1201/ADuM1210/ADuM1211
► ADuM3200/ADuM3201/ADuM3210/ADuM3211
► ADuM120N/ADuM121N
Figure 1. ADuM320N Functional Block Diagram
► AEC-Q100 qualified for automotive applications
► Operating temperature range: −40°C to +125°C
► Available in 8-lead, narrow-body, RoHS-compliant, standard
small outline SOIC_N package and 8-lead, wide-body, RoHS-
compliant, standard small outline SOIC_IC package
APPLICATIONS
► Inverters
► Power supplies
Figure 2. ADuM321N Functional Block Diagram
► Industrial field bus isolation
► PWM controller signal isolation
► General-purpose multichannel isolation
1
Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329. Other patents are pending.
Rev. B
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