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Analog Devices ADN4651BRSZ-RL7 — Digital Isolators
Analog Devices

ADN4651BRSZ-RL7 iCoupler LVDS Isolator, 600 Mbps, 3750 Vrms

MPNADN4651BRSZ-RL7
End of Life

Analog Devices ADN4651BRSZ-RL7, iCoupler series, LVDS digital isolator, 2 unidirectional channels, 600 Mbps data rate, 3750 Vrms isolation, 25 kV/µs CMTI, 2.375V-2.625V supply, 20-SSOP, -40°C to 125°C.

$13.81Ref. price · indicative, final on quote
ADN4651BRSZ-RL7 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.
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Specifications

ADN4651BRSZ-RL7 Technical Specifications
ParameterValue
TypeLVDS
SeriesiCoupler®
Channel typeUnidirectional
Mounting typeSurface Mount
Voltage2.375V ~ 2.625V
Voltage - isolation3750Vrms
Isolated powerNo
Operating temperature-40°C ~ 125°C
PackageTape & Reel (TR); Cut Tape (CT)
Data rate600Mbps
TechnologyMagnetic Coupling
Case20-SSOP (0.209\", 5.30mm Width)
Number of channels2
Inputs - side 1/Side 21/1
Rise (Fall time)0.35ns, 0.35ns (Max)
Propagation delay tpLH (tpHL)4.5ns, 4.5ns
Common mode transient immunity25kV/µs

Product details

600 Mbps LVDS isolator for high-speed serial links

The Analog Devices ADN4651BRSZ-RL7 is a two-channel, unidirectional LVDS digital isolator from the iCoupler family, built on magnetic coupling technology. It delivers a 600 Mbps data rate per channel with a 4.5 ns propagation delay, making it suited for isolating high-speed serial interfaces like SPI, UART, or LVDS clock/data lines in industrial and telecom systems. The 3750 Vrms isolation rating and 25 kV/µs common-mode transient immunity (CMTI) allow it to sit across a galvanic isolation barrier in motor drives, grid-tied inverters, or medical equipment where fast voltage transients are present. The supply range is 2.375 V to 2.625 V, so the part runs from a 2.5 V rail — not 3.3 V or 1.8 V without a regulator.

The 3750 Vrms isolation voltage is a 1-minute withstand rating, typical for reinforced single isolation in industrial and medical applications. The 25 kV/µs minimum CMTI is the spec that matters when the isolator bridges a noisy power stage: in a motor drive or switched-mode supply, the voltage across the barrier can slew at tens of kV/µs during switching events. If the isolator's CMTI is too low, data corruption or latch-up occurs. At 25 kV/µs, the ADN4651BRSZ-RL7 handles the edge rates from SiC and GaN half-bridges, not just IGBTs.

2.5 V supply — not a 3.3 V part

The supply voltage is 2.375 V to 2.625 V, which is a 2.5 V nominal rail. This is narrower than the 3.0 V to 5.5 V range on many digital isolators. If the system runs 3.3 V LVDS, a local 2.5 V LDO is needed for this isolator. The LVDS I/O levels are CML-like and AC-coupled in many designs, so the supply mismatch is manageable, but the BOM must include the regulator. The 2.5 V rail also limits the input logic threshold: the VIH/VIL levels follow LVDS standards, not TTL or CMOS.

20-SSOP package and tape-and-reel suffix

The part comes in a 20-lead SSOP body, 5.30 mm wide, surface-mount. The BRSZ base code shares the same 20-SSOP footprint and electrical specs across both suffixes.

The iCoupler platform is a mature, multi-sourced process at ADI, so PCN frequency is low.

Frequently asked questions

What is the direct replacement or equivalent for ADN4651BRSZ-RL7?

The ADN4651BRSZ-RL7 has no direct replacement because it is an active part. The closest functional sibling is the ADN4652BRSZ-RL7, which is identical in data rate (600 Mbps), package (20-SSOP), and supply range, but the ADN4652 has its inputs on the opposite side (Side 1/Side 2 input count is 1/1, same as the ADN4651). The ADN4651BRWZ is the same isolator in a wider 20-SOIC package with 5000 Vrms isolation, for designs needing higher isolation voltage in a larger body.

Can ADN4651BRSZ-RL7 be used for 3.3V LVDS isolation?

Not directly. The ADN4651BRSZ-RL7 requires a 2.375 V to 2.625 V supply. For 3.3 V LVDS isolation, a local 2.5 V regulator must be added to the BOM. The LVDS I/O levels are standard (350 mV swing typical) and AC-coupled in most designs, so the supply mismatch does not affect signal integrity, but the power rail must be generated.

Is ADN4651BRSZ-RL7 the same as ADN4651BRSZ (non-tape/reel)?

Yes, the ADN4651BRSZ (tube) and ADN4651BRSZ-RL7 (tape-and-reel) are electrically identical — same die, same 20-SSOP package, same 600 Mbps data rate, same 3750 Vrms isolation. The only difference is the shipping medium: tube for low-volume or prototype builds, tape-and-reel for automated assembly.

Is ADN4651BRSZ-RL7 compatible with 2.5V supplies?

Yes, the 2.375 V to 2.625 V supply range is centered on 2.5 V. A 2.5 V ±5% rail is within spec. The part will not operate from a 3.3 V or 1.8 V rail without regulation.