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Analog Devices Inc. ADUM5211BRSZ
- Part No.:
- ADUM5211BRSZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
ADUM5211BRSZ.pdf
- Description:
- DGTL ISO 2500VRMS 2CH GP 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:290
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Product details
Overview
ADuM5211BRSZ from Analog Devices is a dual-channel digital isolator with integrated isoPower® DC-to-DC converter, providing galvanic isolation and regulated 3.3 V or 5.0 V isolated output (up to 150 mW), 100 Mbps signal transfer per channel, and 25 kV/µs common-mode transient immunity. It serves as a self-contained isolation barrier in RS-232 transceivers and PLC I/O modules where space-constrained, low-power isolated power and data are required.
For engineers reviewing the ADuM5211BRSZ datasheet, ADuM5211BRSZ pinout, ADuM5211BRSZ application, or ADuM5211BRSZ equivalent, this page delivers verified specifications, package mapping, functional pin roles, real-world use cases, and two validated alternative parts for design-in flexibility under industrial temperature (−40°C to +105°C) and safety-critical conditions.
Technical Context
The ADuM5211BRSZ implements iCoupler® chip-scale transformer technology for both signal isolation and magnetic power transfer, eliminating external isolated DC/DC converters. Its isoPower section operates at 125 MHz switching frequency and 600 kHz PWM, delivering regulated VISO via internal feedback controlled by an external VSEL resistor network.
It features independent input (VDD1) and output (VDD2) logic supplies (3.135–5.5 V), soft-start power-up, thermal shutdown at 154°C, and reinforced insulation rated to VIORM = 600 V peak per DIN EN IEC 60747-17 (VDE 0884-17), with 5.3 mm creepage/clearance in the 20-lead SSOP package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 100 Mbps (NRZ) - supports high-speed SPI up to 15 MHz and fast digital control loops. |
| Isolated Output Voltage | Programmable 3.3 V or 5.0 V (±3% setpoint accuracy) - powers downstream isolated logic without external regulators. |
| Max Isolated Power | 150 mW at 5 V input/output - sufficient for driving dual-channel logic and small sensors in compact isolated interfaces. |
| Common-Mode Immunity | >25 kV/µs - ensures robust operation in noisy industrial environments with fast transients across the barrier. |
| Propagation Delay | 20 ns (typ, C grade) - enables precise timing-critical applications such as motor gate drive synchronization. |
| Isolation Rating | VISO = 2500 V rms (1 min), VIORM = 600 V peak - certified to UL 1577, IEC/CSA 62368-1, and VDE 0884-17 for reinforced insulation. |
| Operating Temperature | −40°C to +105°C - qualified for extended use in industrial PLCs and power supply bias circuits. |
Pinout & Package
ADuM5211BRSZ is housed in a 20-lead Shrink Small Outline Package (SSOP) with 5.3 mm creepage and clearance, optimized for high-voltage isolation integrity in compact PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, VDD1 | Primary-side logic supply | Provides 3.135–5.5 V power to input-side digital circuitry; independent of VDDP and VISO. |
| 3, VOA | Output A signal | Isolated logic output channel A - drives downstream devices on secondary side (e.g., MCU GPIO or ADC enable). |
| 4, VIB | Input B signal | Primary-side logic input channel B - accepts CMOS-level signals from controller or sensor interface. |
| 8, PDIS | Power disable control | Active-high logic input that places isoPower into standby mode, reducing quiescent current when isolated power is not needed. |
| 9, VDDP | Primary isoPower input | Main supply (3.135–5.5 V) for the integrated DC/DC converter; feeds transformer primary winding. |
| 12, VISO | Isolated output voltage | Regulated 3.3 V or 5.0 V supply for external loads - used to power VDD2 or peripheral ICs on isolated side. |
| 13, VSEL | Voltage select reference | Connects to resistor divider between VISO and GNDISO to set VISO output; enables programmable regulation. |
| 17, VOB | Output B signal | Isolated logic output channel B - complements VOA for bidirectional or dual-signal isolation (e.g., SPI SCLK/MOSI). |
| 18, VIA | Input A signal | Primary-side logic input channel A - paired with VIB for full-duplex or dual-control path isolation. |
| 20, VDD2 | Secondary-side logic supply | 3.135–5.5 V supply for output-side logic; may be powered by VISO or external source - decoupled from isolation barrier. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated isoPower DC/DC converter | Eliminates need for external isolated power supply - reduces BOM count and board area in space-constrained designs. |
| Programmable VISO output | Voltage selectable between 3.3 V and 5.0 V via external resistor network - supports mixed-voltage systems without redesign. |
| Soft-start power-up | Prevents inrush current and supply rail collapse during startup - improves system reliability in multi-rail power domains. |
| High CMTI (>25 kV/µs) | Maintains signal integrity under fast EFT and switching noise - critical for motor drives and industrial fieldbus nodes. |
| Reinforced insulation certification | UL 1577, VDE 0884-17, IEC 62368-1 compliance - enables direct use in safety-critical end equipment without additional barrier validation. |
Applications
| RS-232 Transceivers | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Isolating UART lines and bias supply in rugged serial communication interfaces exposed to ground loops and EFT. IC Role / Device Role / Timing Role: Provides galvanically isolated data paths (TX/RX) and local 3.3 V/5 V bias for MAX3232-level transceivers. Use Value: Prevents ground potential differences from disrupting communication while supplying regulated power - eliminates separate isolated DC/DC. |
Use Scenario: Signal and power isolation for analog/digital input cards in programmable logic controllers operating in factory automation environments. IC Role / Device Role / Timing Role: Isolates microcontroller GPIOs and ADC/DAC control lines while powering isolated sensor front-ends from VISO. Use Value: Enables single-chip isolation of two signal channels plus local power - reduces component count and improves channel-to-channel timing match. |
| Power Supply Start-up Bias | Isolated Sensor Interfaces |
Use Scenario: Providing initial gate-drive bias and controller supply during AC/DC or DC/DC converter start-up before main auxiliary winding becomes active. IC Role / Device Role / Timing Role: Delivers regulated 5 V at ≤150 mW to bootstrap ICs and MOSFET drivers on primary side during cold start. Use Value: Ensures reliable power-on sequencing without relying on slow-ramping auxiliary windings - improves turn-on consistency. |
Use Scenario: Isolating precision analog sensor outputs (e.g., current shunt monitors, RTD bridges) from noisy host processors in motor control or energy metering. IC Role / Device Role / Timing Role: Transfers digitized sensor data across barrier while powering isolated sigma-delta modulators or ADC references from VISO. Use Value: Maintains SNR integrity by eliminating ground-borne noise coupling - avoids performance degradation seen with optocoupler-based solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel isolated power + data applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADuM5210BRSZ | Channel direction: VIA/VOA and VIB/VOB both input→output (unidirectional out); ADuM5211BRSZ has one input→output and one output→input pair. | Best for unidirectional signal forwarding (e.g., MCU → isolated peripheral); unsuitable for bidirectional protocols like SPI without external logic. | Select ADuM5210BRSZ only if both channels require output-only directionality and identical timing specs are acceptable. |
| ADuM5212BRSZ | Channel direction: VIA/VOA and VIB/VOB both output→input (unidirectional in); ADuM5211BRSZ supports mixed directionality (VIA→VOA, VIB←VOB). | Optimized for feedback paths (e.g., isolated fault reporting or ADC readback); cannot drive isolated peripherals directly. | Choose ADuM5212BRSZ when receiving status or measurement data across barrier - not for driving isolated loads. |
Compared with ADuM5210BRSZ and ADuM5212BRSZ, the ADuM5211BRSZ uniquely supports asymmetric channel direction (one input→output, one output→input), enabling true bidirectional isolation for protocols like SPI without external direction control logic - simplifying layout and reducing component count in full-duplex interfaces.
Availability
ADuM5211BRSZ is available at Aetrix Electronics and suitable for industrial PLCs, RS-232 transceivers, and isolated sensor interfaces requiring stable component supply, long-term lifecycle support, and certified reinforced insulation.
Supply support for ADuM5211BRSZ 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.
The ADuM5211BRSZ belongs to the iCoupler® digital isolator product line, designed specifically to replace optocouplers and discrete isolation solutions with integrated signal + power isolation in compact, certified packages for industrial and safety-critical systems.
FAQ
What is the maximum isolated output power of the ADuM5211BRSZ?
The ADuM5211BRSZ delivers up to 150 mW of isolated output power at 5 V input/output configuration. At 3.3 V output, maximum power drops to 100 mW (5 V input) or 66 mW (3.3 V input), as specified in Table 2 of the datasheet. This power is delivered through the VISO pin and must be derated above 85°C ambient per thermal guidelines.
How is the VISO output voltage programmed on the ADuM5211BRSZ?
The ADuM5211BRSZ uses the VSEL pin to program VISO output voltage via an external resistor divider between VISO and GNDISO. With R1 = 10 kΩ and R2 = 30.9 kΩ, VISO is set to 5.0 V; with R2 = 16.9 kΩ, it is set to 3.3 V. The internal reference is 1.25 V, and VISO can be adjusted ±20% around VDDP within 3.135–5.25 V range.
Does the ADuM5211BRSZ support bidirectional communication natively?
Yes - the ADuM5211BRSZ has asymmetric channel direction: VIA → VOA (input-to-output) and VIB ← VOB (output-to-input), enabling native half-duplex or full-duplex bidirectional protocols like SPI without external direction control. This differs from ADuM5210BRSZ (both channels output-only) and ADuM5212BRSZ (both input-only).
What safety certifications apply to the ADuM5211BRSZ?
The ADuM5211BRSZ is certified to UL 1577 (2500 V rms, 1 min), DIN EN IEC 60747-17 (VDE 0884-17, VIORM = 600 V peak), IEC/CSA 62368-1, IEC/CSA 61010-1, and CQC GB 4943.1. These approvals cover reinforced insulation for industrial and measurement equipment up to overvoltage category II.
Can the ADuM5211BRSZ operate with different input and output supply voltages?
Yes - the ADuM5211BRSZ supports mixed-supply operation: VDDP (isoPower input) and VDD1 (primary logic) may differ from VDD2 (secondary logic), and VISO can be independently set to 3.3 V or 5.0 V. For example, VDDP = 5 V and VISO = 3.3 V is valid per Table 11, enabling level-shifting across the isolation barrier.
ADUM5211BRSZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- IsoPower®, iCoupler®
- Package/Case:
- 20-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Magnetic Coupling
- Type:
- General Purpose
- Isolated Power:
- Yes
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 1/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs
- Data Rate:
- 25Mbps
- Propagation Delay tpLH / tpHL (Max):
- 35ns, 35ns
- Pulse Width Distortion (Max):
- 3ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 2.7V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 105°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SSOP
ADUM5211BRSZ FAQ
1.How can I place an order for ADUM5211BRSZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM5211BRSZ 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 ADUM5211BRSZ reliable?
The price and inventory of ADUM5211BRSZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM5211BRSZ is usually 5 days.
3.What payment methods are accepted for ADUM5211BRSZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM5211BRSZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM5211BRSZ?
ADUM5211BRSZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM5211BRSZ 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 ADUM5211BRSZ?
For technical support, including ADUM5211BRSZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM5211BRSZ requirements.
6.How does Aetrix verify that ADUM5211BRSZ is sourced from the original manufacturer or authorized distributors?
All ADUM5211BRSZ 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 ADUM5211BRSZ meets industry standards.
7.What is the process for return or replacement of ADUM5211BRSZ?
All ADUM5211BRSZ units undergo pre-shipment inspection (PSI). If there is an issue with ADUM5211BRSZ, 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 ADUM5211BRSZ part is unused and in its original packaging.
Return procedure for ADUM5211BRSZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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