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Analog Devices ADUM3480BRSZ — Digital Isolators
Analog Devices

ADUM3480BRSZ iCoupler Digital Isolator, 25Mbps, 3750Vrms

MPNADUM3480BRSZ
End of Life

Analog Devices ADUM3480BRSZ iCoupler, General Purpose digital isolator, 4-channel unidirectional, 25Mbps data rate, 3750Vrms isolation, 1.8V-5.5V supply, -40°C to 125°C, 20-SSOP package, Tube.

$6.48Ref. price · indicative, final on quote
ADUM3480BRSZ datasheet
Packaging20-SSOP (0.209", 5.30mm Width)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

ADUM3480BRSZ Technical Specifications
ParameterValue
TypeGeneral Purpose
SeriesiCoupler®
Channel typeUnidirectional
Mounting typeSurface Mount
Voltage1.8V ~ 5.5V, 3V ~ 5.5V
Voltage - isolation3750Vrms
Isolated powerNo
Operating temperature-40°C ~ 125°C
Pulse width distortion3ns
PackageTube
Data rate25Mbps
TechnologyMagnetic Coupling
Case20-SSOP (0.209\", 5.30mm Width)
Number of channels4
Inputs - side 1/Side 24/0
Rise (Fall time)2.5ns, 2.5ns
Propagation delay tpLH (tpHL)33ns, 33ns
Common mode transient immunity25kV/µs

Product details

25 Mbps unidirectional quad isolator — what it fits and what it doesn't

The ADUM3480BRSZ is a four-channel, unidirectional digital isolator from Analog Devices' iCoupler series, built around magnetic coupling technology. It delivers 25 Mbps per channel with a propagation delay of 33 ns max and 2.5 ns typical rise/fall times.

Supply range and temperature — industrial and automotive ready

No isolated power converter is integrated, so you still need a separate DC-DC for the secondary-side rail.

Package and footprint — 20-SSOP

Housed in a 20-SSOP package (5.30 mm body width, 0.209" pitch), surface-mount only. The 20-SSOP footprint is common across the ADUM3480 family, so swapping density options keeps the same board layout.

The product status is Active and ROHS3 Compliant. The iCoupler series has broad second-source coverage from competitors, but no pin-compatible alternate is cited in the ledger.

Frequently asked questions

Can ADUM3480BRSZ be used for I2C isolation?

No — the ADUM3480BRSZ has four unidirectional channels, all with inputs on side 1. I2C requires bidirectional data lines, so this part cannot handle the bus turnaround without external logic. For I2C isolation, look at a dedicated bidirectional isolator like the ADuM1250 or use two ADUM3480BRSZ parts wired back-to-back with a direction-control scheme.

How does ADUM3480BRSZ compare to ADuM1400?

Both are 4-channel unidirectional digital isolators from ADI's iCoupler family. The ADUM3480BRSZ runs at 25 Mbps with 33 ns propagation delay, while the ADuM1400 typically offers 10 Mbps or 90 Mbps variants depending on the speed grade. The ADUM3480BRSZ operates down to 1.8 V on the input side, making it a better fit for low-voltage MCU domains. Pinout differs between the two families, so they are not drop-in replacements.