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Analog Devices ADUM121N1BRZ-RL7 — Digital Isolators
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Analog Devices / Digital Isolators

ADUM121N1BRZ-RL7 iCoupler Digital Isolator, 150Mbps

MPN ADUM121N1BRZ-RL7
End of Life Spot Stock · 24-48h Dispatch 100% Original Sealed

Analog Devices iCoupler ADUM121N1BRZ-RL7, General Purpose digital isolator, 2 channels unidirectional, 150Mbps data rate, 3000Vrms isolation, 1.7V to 5.5V supply, -40°C to 125°C, 8-SOIC surface mount.

In Stock: 63 pcs
MOQ: 1 pcs
Logistics: DHL / FedEx DAP (Global Express · 3-7d) Russia & CIS DDP (Door-to-Door Cleared)
Dispatch: Shenzhen / HK
Unit Price (USD)
$3.25 / pc
Direct Purchase Ready
Volume Pricing Breaks Confirmed upon quotation
1+ pcs
$3.25
10+ pcs
$2.76
30+ pcs
$2.46
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63 in stock — maximum per order · 3–4 days lead time

$2.76 / ea from 10 pcs
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100% Original Sealed 45x Microscope QC 30-Day Warranty · COC USD T/T & PI · DAP/DDP
[SPEC] Essential Parameters Snapshot Full Specifications (18)
Package / Case 8-SOIC (0.154", 3.90mm Width)
Supply Voltage 1.7V ~ 5.5V
ALT
Facing long factory lead times or allocation on ADUM121N1BRZ-RL7? Verified pin-compatible alternatives available with active Shenzhen stock and 100% solder-ready footprint match.
View Pin Alternates (3)

Full Technical Specifications

18 Parameters
ADUM121N1BRZ-RL7 specifications
Parameter / AttributeSpecification / Value
TypeGeneral Purpose
SeriesiCoupler®
Channel typeUnidirectional
MountingSurface Mount
Supply voltage1.7V ~ 5.5V
Voltage - isolation3000Vrms
Isolated powerNo
Operating temperature-40°C ~ 125°C
Pulse width distortion3ns
PackageTape & Reel (TR); Cut Tape (CT)
Data rate150Mbps
TechnologyMagnetic Coupling
Case8-SOIC (0.154\", 3.90mm Width)
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
100% Footprint Match · Solder-Ready (No PCB Redesign Needed)

Need Stock or a Drop-in Second-Source for ADUM121N1BRZ-RL7?

Package: SOIC-8 (narrow body) · Pin-compatible replacements with immediate Shenzhen spot stock

Footprint Match 98%
Supply Chain & Allocation Reality:

The ADuM120x pair is the digital isolator that replaced optocouplers across industrial designs: two channels on a magnetic barrier instead of an LED, 2.5kV of isolation in an eight-pin SOIC, supplies from 2.7V to 5.5V that made 3.3V-to-5V level translation and isolation one component. The naming is a single decision - ADuM1200 carries both channels in one direction, ADuM1201 is the 1/1 bidirectional part - and the generation upgrade is documented pin-for-pin: the N-family maps onto the classic sockets with faster rates and fail-safe output options. The substitution mistake in this family is one character wide and completely fatal to the signal path.

Verified Pin-Compatible Replacements (3 verified alternatives)

ADuM1200 Analog Devices SOIC-8
Pin-to-Pin (Minor Clock/Init Tuning)
Availability & Target Pricing:

The 2/0 Member - Same Socket, Different Direction

Shenzhen Spot Stock (24-48h Dispatch)

Electrical & Core Specs:

The same dual-channel isolator with both channels pointing the same way (2/0 against the 1201s 1/1 direction split): identical timing, identical supplies, opposite topology.

2.7V to 5.5V on either side with independent level translation; 2.5kV RMS isolation.

Compatibility & Drop-In Notes: The substitution rule: same socket, same speed grades (A/B/C at 1/10/25Mbps), same everything except the arrows. A 1200 in a 1201 socket isolates half the bus and inverts the other halfs role - the failure looks like a protocol bug, not a component mistake.
Package & Solder Footprint: Identical SOIC-8 footprint.
Shenzhen Warehouse Stock & MOQ: Stocked as the pair; label the two drawers distinctly.
Request Volume Quote for ADuM1200 Compare ADUM121N1BRZ-RL7 vs ADuM1200 Spec Matrix
ADuM121N1 Analog Devices SOIC-8
Pin-to-Pin (Minor Clock/Init Tuning)
Availability & Target Pricing:

The Pin-Compatible Modern Generation

Shenzhen Spot Stock (24-48h Dispatch)

Electrical & Core Specs:

The N-generation replacement documented as pin-compatible with the ADuM1201 (the ADuM120N1 maps to the ADuM1200): up to 150Mbps, lower propagation delay, 100kV/us common-mode transient immunity and selectable fail-safe output (N0 against N1).

1.8V to 5V supplies; 3kV RMS isolation class.

Compatibility & Drop-In Notes: The upgrade direction is calm: pin-compatible into the classic sockets with better performance. The one review: which fail-safe behavior the design assumed during power sequencing - check the N0/N1 suffix against the board behavior before standardizing.
Package & Solder Footprint: Same SOIC-8 land pattern.
Shenzhen Warehouse Stock & MOQ: Active production; the forward buy for the socket.
Request Volume Quote for ADuM121N1 Compare ADUM121N1BRZ-RL7 vs ADuM121N1 Spec Matrix
ADuM1285 Analog Devices SOIC-8
Pin-to-Pin (Minor Clock/Init Tuning)
Availability & Target Pricing:

The Direction-Swapped N Option

Shenzhen Spot Stock (24-48h Dispatch)

Electrical & Core Specs:

The N-generation mapping option for same-direction duty (the N0 variants map onto the 1285/1286) with fail-safe-high output behavior.

Modern low-voltage envelope; same isolation class.

Compatibility & Drop-In Notes: In repair, the pattern to keep: the N family is a small matrix of direction x data-rate x fail-safe - three coordinates, all encoded in the suffix. Any substitution ends by checking the coordinate, not the family name.
Package & Solder Footprint: SOIC-8 shared land pattern.
Shenzhen Warehouse Stock & MOQ: Stocked with the N row; documented ordering table.
Request Volume Quote for ADuM1285 Compare ADUM121N1BRZ-RL7 vs ADuM1285 Spec Matrix
Buyer & Quality Checklist for Sourcing Alternatives
  • The channel map is the part number: ADuM1200 is 2/0 (both channels one direction), ADuM1201 is 1/1 - the bidirectional dual. The bodies are identical; the digit is the entire topology.
  • Grades A/B/C set data rate (about 1/10/25 Mbps): the slow grade in a fast socket works until the bus speed is actually used - in repair, match the grade letter when the original design ran near its limit.
  • The N-generation is documented pin-compatible onto the classic row (120N1 onto 1200, 121N1 onto 1201) with far higher rates and selectable fail-safe outputs - the upgrade path is real, and the fail-safe suffix is the new thing to read.
  • Independent supplies on the two sides are the feature: 3.3V logic on one side, 5V on the other, each at its own level. The isolation barrier is also the level translator - do not add level shifters by reflex when repairing.
  • Isolation grade differences live in the body variants (wide-body and higher-kV members): the 8-pin narrow package is one class - substituting across bodies is a creepage decision, not a pin decision.
  • In field failures, check both supplies before the part: a dead isolator side that lost its rail reads exactly like a dead isolator. The part is usually the messenger in a power-sequencing story.
Frequently Asked Technical Questions

Q: What is the difference between ADuM1200 and ADuM1201?

A: Channel direction only: ADuM1200 routes both channels the same way (2/0), ADuM1201 provides one channel each direction (1/1). Identical package, supplies and timing - the one-digit rule decides whether a bus crosses the barrier both ways.

Q: Can the N-generation replace the classic ADuM120x?

A: Pin-compatible per the documented mapping (ADuM120N1 onto ADuM1200, ADuM121N1 onto ADuM1201) with higher speed, lower delay and selectable fail-safe output - verify the N0/N1 fail-safe suffix against the power-up behavior the board expects.

Q: Do I need level shifting around a digital isolator?

A: No - the two sides carry independent 2.7-5.5V supplies (1.8-5V on the N row), so the isolator is also the translator. Repair habits from optocoupler circuits that add shifters waste parts and add failure points.

Technical Details & Description

Two-channel isolation at 150 Mbps — what that buys you

The ADUM121N1BRZ-RL7 is a two-channel, unidirectional digital isolator from the iCoupler series, built with magnetic coupling technology. It delivers 3000Vrms isolation in a compact 8-SOIC package, with a data rate of 150Mbps that comfortably handles SPI, UART, and CAN FD isolation without adding bus latency. The 1.7V to 5.5V supply range on each side means it can bridge a 1.8V MCU domain to a 5V peripheral rail without a level shifter — one less component on the BOM.

75 kV/µs CMTI — why it matters for motor drives and inverters

In a motor-drive or inverter application where fast-switching IGBTs or SiC FETs slam the ground reference, that CMTI margin keeps the output from glitching. The 13ns propagation delay (max) and 3ns pulse-width distortion mean the isolated signal stays clean enough for timing-critical loops like PWM gating or encoder feedback.

Temperature grade and storage reality

Frequently asked questions

What are the equivalent or replacement parts for ADUM121N1BRZ-RL7?

The ADUM121N1BRZ (tube-pack) is the same die and ratings, just a different shipping medium. For a single-channel version, the ADUM110N0BRZ-RL7 offers one unidirectional channel at the same 150Mbps and 3000Vrms. For a two-channel with both inputs on side 1, the ADUM120N1BRZ-RL7 is a functional alternative.

Is ADUM121N1BRZ-RL7 lead-free and RoHS compliant?

Yes, it is ROHS3 compliant and lead-free per the listing.

ADUM121N1BRZ-RL7
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