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Analog Devices ADUM121N1BRZ — Digital Isolators
Analog Devices

ADUM121N1BRZ Digital Isolator, 150Mbps, 3000Vrms, 8-SOIC

MPNADUM121N1BRZ
End of Life

Analog Devices ADUM121N1BRZ iCoupler, 2-channel general-purpose digital isolator, 150Mbps, 3000Vrms isolation, 75kV/µs CMTI, 1.7V-5.5V supply, -40°C to 125°C, 8-SOIC.

$2.68Ref. price · indicative, final on quote
ADUM121N1BRZ datasheet
Packaging8-SOIC (0.154", 3.90mm 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

ADUM121N1BRZ Technical Specifications
ParameterValue
TypeGeneral Purpose
SeriesiCoupler®
Channel typeUnidirectional
Mounting typeSurface Mount
Voltage1.7V ~ 5.5V
Voltage - isolation3000Vrms
Isolated powerNo
Operating temperature-40°C ~ 125°C
Pulse width distortion3ns
PackageTube
Data rate150Mbps
TechnologyMagnetic Coupling
Case8-SOIC (0.154\", 3.90mm Width)
Number of channels2
Inputs - side 1/Side 21/1
Rise (Fall time)2.5ns, 2.5ns
Propagation delay tpLH (tpHL)13ns, 13ns
Common mode transient immunity75kV/µs

Product details

Two-channel digital isolator for noisy industrial links

The ADUM121N1BRZ is a two-channel, unidirectional digital isolator from the iCoupler family, using magnetic coupling. It delivers 150Mbps across a 3000Vrms barrier, with 13ns propagation delay and 3ns pulse-width distortion.

75kV/µs CMTI — the spec that keeps data clean in a motor drive

Common-mode transient immunity is rated at 75kV/µs minimum. That is the number to watch when the isolator sits between a microcontroller and a gate-driver on a 48V or 400V inverter bus — fast switching edges couple common-mode noise across the barrier, and if the CMTI is too low, the output glitches. 75kV/µs handles the dV/dt from SiC and GaN stages comfortably. Rise and fall times are 2.5ns typical, so the output edges stay sharp enough for 150Mbps NRZ data without excessive ringing.

Frequently asked questions

Can ADUM121N1BRZ be used for SPI isolation?

Yes, the 150Mbps data rate and 13ns propagation delay are fast enough for SPI clocks up to 75 MHz (half-duplex) or 150 Mbps (full-duplex with two channels). The unidirectional channel configuration — one input on side 1, one input on side 2 — matches a typical SPI MOSI/MISO pair. For a three-wire SPI with chip select, you would need a third channel, which the three-channel ADUM131D0BRZ provides in the same package footprint.

What is the replacement for ADUM121N1BRZ?

There is no official replacement because the part is active and current. The tape-and-reel variant ADUM121N1BRZ-RL7 is functionally identical — same silicon, same ratings — just packaged in Tape & Reel instead of Tube.