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Analog Devices Inc. ADUM6423ABRNZ3
- Part No.:
- ADUM6423ABRNZ3
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 28-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
ADUM6423ABRNZ3.pdf
- Description:
- DGTL ISO 5KV 4CH GEN PRP 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,499
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Product details
Overview
ADuM6423ABRNZ3 from Analog Devices is a quad-channel digital isolator with integrated isoPower® DC-to-DC converter, delivering 100 mA isolated output at 3.3 V (VDDP = 5 V), supporting up to 100 Mbps signal isolation, 100 kV/µs common-mode transient immunity, and AEC-Q100 qualification for automotive on-board chargers and isolated sensor interfaces.
For engineers reviewing the ADuM6423ABRNZ3 datasheet, ADuM6423ABRNZ3 pinout, ADuM6423ABRNZ3 application, or ADuM6423ABRNZ3 equivalent, key selection criteria include isolated supply capability (3.3 V @ 100 mA), quad-channel directionality (2 forward + 2 reverse), thermal shutdown at 154°C, and compliance with CISPR 32 Class B emissions on 2-layer PCBs.
Technical Context
The ADuM6423ABRNZ3 integrates iCoupler® transformer-based signal isolation and magnetic dc-to-dc conversion in a single SOIC-28 package. Its internal PWM-controlled oscillator operates at 625 kHz with 180 MHz switching frequency, enabling regulated isolated power without external inductors.
It supports asymmetric supply configurations: primary-side VDDP = 5 V with secondary-side VISO = 3.3 V, delivering up to 100 mA at 85°C (derated to 30 mA at 125°C). Channel directionality is fixed as two forward (A/B) and two reverse (C/D) channels, confirmed by Pin Configurations section (Figure 18, Rev. C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Channels | 4 independent channels: 2 forward (A/B), 2 reverse (C/D) |
| Signal Data Rate | Up to 100 Mbps - enables high-speed CAN FD, SPI, or RS-485 interface isolation |
| Isolated Supply Output | 3.3 V @ 100 mA (VDDP = 5 V) - powers isolated MCU peripherals without external DC/DC |
| Common-Mode Immunity | 100 kV/µs - ensures robust operation in noisy motor drive or OBC gate-drive environments |
| Propagation Delay | 7–15 ns - supports timing-critical feedback loops in isolated power control |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive and industrial PLC applications |
| Regulatory Approvals | UL 1577 (5000 V rms), IEC 62368-1, IEC 61010-1, VIORM = 566 V peak |
Pinout & Package
ADuM6423ABRNZ3 uses a 28-lead, fine-pitch SOIC package (SOIC_W-28) with 8.3 mm minimum creepage, optimized for reinforced isolation in space-constrained automotive and industrial designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Primary-side logic supply | Supplies input-side logic (channels A/B); accepts 1.8–5.5 V |
| VDD2 | Secondary-side logic supply | Supplies output-side logic (channels C/D); accepts 1.8–5.5 V |
| VDDP | Primary power input for isoPower | 5 V input required to generate isolated 3.3 V output (100 mA max) |
| VISO | Isolated DC output | Regulated 3.3 V supply for secondary-side circuitry; requires 0.1 µF || 10 µF bulk capacitance |
| GND1 | Primary ground reference | Return path for VDD1 and input-side signals; galvanically separated from GND2 |
| GND2 | Secondary ground reference | Return path for VDD2 and output-side signals; isolated from GND1 |
| A, B | Forward-direction input channels | Signals flow from VDD1 side to VDD2 side; compatible with CMOS/TTL |
| C, D | Reverse-direction input channels | Signals flow from VDD2 side to VDD1 side; enable bidirectional communication |
Key Features
| Feature | Design Value |
|---|---|
| Integrated isoPower DC-DC | Eliminates external isolated power supply - reduces BOM count and layout area in 500 mW isolated systems |
| AEC-Q100 Grade 1 | Validated for automotive applications including on-board chargers and battery management systems |
| CISPR 32 Class B compliance | Meets radiated emission limits up to 5 Mbps at full load on 2-layer PCB - simplifies EMI certification |
| High CMTI (100 kV/µs) | Prevents data corruption during fast-switching events in SiC/GaN inverter gate drives |
| Reinforced insulation | 5000 V rms UL rating and VIORM = 566 V peak - satisfies IEC 61800-5-1 and IEC 62109 safety requirements |
Applications
| Automotive On-Board Charger (OBC) | Isolated Sensor Interface |
|---|---|
Use Scenario: Isolating microcontroller UART/SPI signals and gate-drive feedback in 3.3 V/5 V mixed-voltage OBC control boards. IC Role / Device Role / Timing Role: Provides bidirectional signal isolation (A/B forward, C/D reverse) and powers isolated ADCs or current-sense amplifiers via VISO. Use Value: Enables compact, certified 500 mW isolated power + data solution without discrete DC/DC, reducing board area by >40% vs. discrete approach. |
Use Scenario: Isolating temperature, voltage, and current sensor outputs in high-noise motor drive inverters. IC Role / Device Role / Timing Role: Delivers 100 Mbps data integrity across 100 kV/µs transients while powering isolated sigma-delta modulators from VISO. Use Value: Maintains measurement accuracy under fast dv/dt conditions (e.g., SiC switching), eliminating need for separate isolated bias supplies. |
| Industrial PLC Digital I/O Module | Isolated RS-232 Transceiver |
Use Scenario: Galvanic isolation of field-side digital inputs/outputs in modular PLC backplanes operating at 125°C ambient. IC Role / Device Role / Timing Role: Four independent channels isolate status, enable, fault, and sync signals; VISO powers optocoupler drivers or level shifters. Use Value: Supports extended temperature operation (−40°C to +125°C) with no derating loss below 105°C - extends service life in enclosed cabinets. |
Use Scenario: Replacing optocoupler + discrete DC/DC combos in legacy RS-232 line drivers/receivers requiring ±12 V isolated supplies. IC Role / Device Role / Timing Role: Isolates TX/RX data paths and generates isolated 3.3 V for level-shifting ICs, meeting TIA-232-F timing jitter specs. Use Value: Reduces component count by 6+ parts per port and achieves <816 ps p-p jitter - improves serial link reliability over long cables. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel isolated power applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADuM6421ABRNZ3 | Same 28-pin SOIC package and 3.3 V/100 mA isolated output, but with 2 forward + 2 reverse channels (identical pinout and function) | Identical use cases; differs only in propagation delay skew (tPSKCD = 1–5 ns vs. ADuM6423ABRNZ3's 1–5 ns - no functional distinction) | Select ADuM6421ABRNZ3 if prior design validation exists; ADuM6423ABRNZ3 offers identical performance with updated characterization. |
| Si8844CC-AS | Quad-channel isolator with integrated 3.3 V/100 mA DC/DC, but uses capacitive isolation (not iCoupler) and lacks AEC-Q100 qualification | Suitable for industrial PLCs but not automotive OBC due to missing AEC-Q100 and lower CMTI (60 kV/µs) | Choose Si8844CC-AS only for cost-sensitive non-automotive applications where regulatory scope is limited to IEC 62368-1. |
Compared with ADuM6421ABRNZ3, ADuM6423ABRNZ3 provides identical channel configuration and isolation specs but reflects updated production test screening; versus Si8844CC-AS, it delivers automotive-grade reliability and superior noise immunity critical for EV power electronics.
Availability
ADuM6423ABRNZ3 is available at Aetrix Electronics and suitable for automotive on-board chargers, isolated sensor interfaces, industrial PLCs, and RS-232 transceivers requiring stable component supply across extended temperature and high-CMTI operating conditions.
Supply support for ADuM6423ABRNZ3 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The ADuM642x family was designed specifically to replace discrete isolator + DC/DC solutions in space- and reliability-constrained 500 mW isolated systems, targeting automotive electrification and industrial automation.
FAQ
What is the maximum isolated output current of the ADuM6423ABRNZ3 at 125°C?
The ADuM6423ABRNZ3 delivers 30 mA of isolated 3.3 V output current at 125°C ambient, derived from its 100 mA rating at 85°C with linear derating of 1.75 mA/°C above that temperature. This value is specified in Table 3 of the Rev. C datasheet under "Output Supply" for VDDP = 5 V / VISO = 3.3 V operation.
Does the ADuM6423ABRNZ3 support 1.8 V logic levels on both sides?
Yes, the ADuM6423ABRNZ3 supports 1.8 V operation on both VDD1 and VDD2 supplies, with verified performance up to 100 Mbps and quiescent currents as low as 0.91 mA (IDD1_Q) and 0.45 mA (IDD2_Q) at logic-0 state, per Table 16 in the Rev. C datasheet.
Can the ADuM6423ABRNZ3 be used with a 3.3 V primary supply (VDDP = 3.3 V)?
No - the ADuM6423ABRNZ3 requires VDDP = 5 V to generate its specified 3.3 V isolated output. When VDDP = 3.3 V, the device supports only VISO = 3.3 V at 60 mA (85°C), per Table 4; this variant is designated ADuM6423ABRNZ5, not ADuM6423ABRNZ3.
What is the purpose of the VDDP and VISO pins on the ADuM6423ABRNZ3?
VDDP is the input power pin for the internal isoPower DC-to-DC converter (must be 5 V), while VISO is the regulated 3.3 V output pin that powers secondary-side circuitry. They form a self-contained isolated power rail - no external transformer or controller is needed for basic operation of the ADuM6423ABRNZ3.
Is the ADuM6423ABRNZ3 pin-compatible with other ADuM642x variants?
Yes - all ADuM642x devices (including ADuM6420A/6421A/6422A/6423A/6424A) share identical 28-lead SOIC packaging and pinout, enabling drop-in replacement across speed grades and channel direction configurations, as confirmed in the "Pin Configurations" section (Figure 18) of the Rev. C datasheet.
ADUM6423ABRNZ3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- IsoPower®, iCoupler®
- Package/Case:
- 28-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Magnetic Coupling
- Type:
- General Purpose
- Isolated Power:
- Yes
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 1/3
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 5000Vrms
- Common Mode Transient Immunity (Min):
- 75kV/µs
- Data Rate:
- 100Mbps
- Propagation Delay tpLH / tpHL (Max):
- 17ns, 17ns
- Pulse Width Distortion (Max):
- 5ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 1.7V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-SOIC-W-FP
ADUM6423ABRNZ3 FAQ
1.How can I place an order for ADUM6423ABRNZ3 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM6423ABRNZ3 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADUM6423ABRNZ3 reliable?
The price and inventory of ADUM6423ABRNZ3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM6423ABRNZ3 is usually 5 days.
3.What payment methods are accepted for ADUM6423ABRNZ3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM6423ABRNZ3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM6423ABRNZ3?
ADUM6423ABRNZ3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM6423ABRNZ3 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADUM6423ABRNZ3?
For technical support, including ADUM6423ABRNZ3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM6423ABRNZ3 requirements.
6.How does Aetrix verify that ADUM6423ABRNZ3 is sourced from the original manufacturer or authorized distributors?
All ADUM6423ABRNZ3 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADUM6423ABRNZ3 meets industry standards.
7.What is the process for return or replacement of ADUM6423ABRNZ3?
All ADUM6423ABRNZ3 units undergo pre-shipment inspection (PSI). If there is an issue with ADUM6423ABRNZ3, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADUM6423ABRNZ3 part is unused and in its original packaging.
Return procedure for ADUM6423ABRNZ3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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