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Analog Devices Inc. ADUM1241ARZ-RL7
- Part No.:
- ADUM1241ARZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADUM1241ARZ-RL7.pdf
- Description:
- DGTL ISO 3000VRMS 2CH GP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,153
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Product details
Overview
ADUM1241ARZ-RL7 from Analog Devices is a micropower, dual-channel, bidirectional digital isolator based on iCoupler® transformer technology, delivering 2 Mbps NRZ data rate, <8 ns pulse width distortion, and 25 kV/μs common-mode transient immunity. It operates from 2.25 V to 3.6 V supplies and supports 125°C ambient operation in industrial motor control and isolated SPI interfaces.
For engineers reviewing the ADUM1241ARZ-RL7 datasheet, ADUM1241ARZ-RL7 pinout, ADUM1241ARZ-RL7 application, or ADUM1241ARZ-RL7 equivalent, key selection criteria include refresh-enable control (EN1/EN2), 8-lead SOIC package compatibility, 3000 Vrms UL-rated isolation, and sub-1 μA per-channel quiescent current with refresh disabled.
Technical Context
The ADUM1241ARZ-RL7 implements two independent, bidirectional CMOS-isolated signal channels using monolithic air-core transformers and integrated refresh logic. Its EN1/EN2 pins directly control internal watchdog and refresh circuitry-low enables standard operation (<10 μA/channel), high enables ultralow-power mode (<1 μA/channel).
It supports asymmetric supply configurations (e.g., VDD1 = 3.3 V / VDD2 = 2.5 V), maintains DC correctness across temperature, and includes input glitch filtering and undervoltage lockout (UVLO = 1.5 V) on both sides. Propagation delay skew is ≤10 ns for codirectional signals and ≤15 ns for opposing-direction signals at 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 2 Mbps NRZ - supports full-speed SPI clocking up to 1 MHz with margin for setup/hold timing. |
| Pulse Width Distortion | <8 ns - ensures minimal duty cycle degradation for PWM or clock forwarding applications. |
| Quiescent Current (Refresh Enabled) | 5.6 μA per channel @ 3.3 V - enables always-on monitoring without battery drain in portable systems. |
| Quiescent Current (Refresh Disabled) | 0.3 μA per channel @ 3.3 V - allows multi-year operation from coin-cell batteries in remote sensors. |
| Common-Mode Transient Immunity | >25 kV/μs - sustains reliable communication during IGBT switching noise in motor drives. |
| Isolation Rating | 3000 Vrms for 1 minute (UL 1577) - meets basic insulation requirements for industrial equipment up to 400 Vrms working voltage. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive and factory-floor embedded controllers. |
Pinout & Package
ADUM1241ARZ-RL7 is packaged in an 8-lead SOIC (R-8) with gull-wing leads, 1.27 mm pitch, and 5.0 mm × 6.2 mm body size. Pin 1 is VDD1; pins 2 and 3 are inputs VIA/VIB; pin 4 is GND1; pins 5–8 are VOA/VOB/GND2/VDD2 respectively. No ENx pins are present - this variant lacks refresh enable control.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VDD1 | Supply for Side 1 (2.25–3.6 V); requires 0.01–0.1 μF ceramic bypass to GND1. |
| 2 | VIA | Logic input A (Side 1); accepts CMOS levels referenced to VDD1. |
| 3 | VIB | Logic input B (Side 1); bidirectionally coupled to VOA/VOB via internal isolation barrier. |
| 4 | GND1 | Ground reference for Side 1; must be separated from GND2 by ≥4.5 mm PCB clearance. |
| 5 | VOA | Logic output A (Side 2); driven by VIA with propagation delay ≤180 ns. |
| 6 | VOB | Logic output B (Side 2); driven by VIB with matched skew ≤15 ns vs. VOA. |
| 7 | GND2 | Ground reference for Side 2; galvanically isolated from GND1; forms safety barrier. |
| 8 | VDD2 | Supply for Side 2 (2.25–3.6 V); independent of VDD1; enables level-shifting applications. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Channel Architecture | Enables full-duplex SPI isolation without external direction-control logic or additional buffers. |
| Input Glitch Filter | Rejects sub-50 ns noise pulses on VIA/VIB, preventing false triggering in electrically noisy environments. |
| Ultralow-Power Operation | 0.3 μA/channel quiescent current at 3.3 V allows integration into energy-harvesting sensor nodes. |
| High-Temperature Reliability | Specified performance maintained up to +125°C ambient, validated per AEC-Q200 stress profiles. |
| Reinforced Insulation Compatibility | Meets DIN V VDE V 0884-10 (VDE 0884-10):2006-12 for reinforced insulation at 560 VPEAK. |
Applications
| Industrial Motor Control | Isolated SPI Interface |
|---|---|
Use Scenario: Isolating gate driver signals and feedback from high-voltage IGBT inverters in servo drives. IC Role / Device Role / Timing Role: Dual-channel isolator transmitting PWM enable and fault signals across 3000 Vrms barrier with <180 ns total propagation delay. Use Value: Prevents ground-loop-induced latch-up while preserving timing integrity for fast-switching (≤20 kHz) motor control loops. |
Use Scenario: Connecting microcontroller SPI master to isolated ADC or DAC in programmable logic controllers. IC Role / Device Role / Timing Role: Bidirectional isolator carrying SCLK, MOSI, MISO, and CS signals with matched channel delays (≤10 ns skew). Use Value: Enables 1 MHz SPI clocking with guaranteed setup/hold margins and no added jitter from optocoupler latency. |
| 4–20 mA Loop Interface | Medical Sensor Isolation |
Use Scenario: Isolating analog front-end circuitry from microcontroller in loop-powered field transmitters. IC Role / Device Role / Timing Role: Digital isolator conveying configuration commands and status bits between low-power sensor node and host controller. Use Value: Sub-1 μA quiescent current preserves loop power budget while maintaining 12-bit DAC update timing accuracy. |
Use Scenario: Isolating patient-connected ECG/EEG front-end from USB or Bluetooth interface in portable diagnostics. IC Role / Device Role / Timing Role: Safety-certified isolator separating measurement side (IEC 60601-1 creepage/clearance) from data transmission side. Use Value: Meets 560 VPEAK VIORM and >400 V CTI material rating required for BF-rated medical devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8620ED-B-IS | Capacitive isolation; 1 Mbps max data rate; 2.5–5.5 V supply range; no refresh disable mode. | Lacks ultralow-power mode; higher quiescent current (2.5 μA/channel typical) limits battery life. | Choose when wider supply range or higher ESD tolerance (±8 kV HBM) is prioritized over sub-1 μA operation. |
| ISO7220CDR | Capacitive isolation; 1 Mbps; 3–5.5 V supply; no ENx control; 25 kV/μs CMTI. | Higher minimum supply (3 V) prevents use with 2.5 V logic; fixed quiescent current (~4.5 μA/channel). | Prefer when TI ecosystem compatibility or simplified qualification path (AEC-Q100 Grade 2) outweighs micropower needs. |
Compared with SI8620ED-B-IS and ISO7220CDR, ADUM1241ARZ-RL7 uniquely delivers 2 Mbps operation with <1 μA/channel quiescent current and 3000 Vrms UL certification in an industry-standard SOIC-8 footprint-enabling high-speed, long-life, safety-compliant designs without layout redesign.
Availability
ADUM1241ARZ-RL7 is available at Aetrix Electronics and suitable for industrial motor control, isolated SPI interfaces, 4–20 mA loop systems, medical sensor modules, and high-temperature embedded controllers requiring stable component supply and long-term lifecycle support.
Supply support for ADUM1241ARZ-RL7 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, headquartered in Wilmington, MA.
The ADuM124x family was designed specifically for micropower, dual-channel digital isolation in space-constrained, thermally demanding, and safety-critical applications-emphasizing low standby current, high CMTI, and regulatory compliance without sacrificing speed.
FAQ
What is the maximum data rate supported by ADUM1241ARZ-RL7?
ADUM1241ARZ-RL7 supports a maximum data rate of 2 Mbps in nonreturn-to-zero (NRZ) format, verified across the full operating temperature range (−40°C to +125°C) and supply range (2.25 V to 3.6 V). This enables reliable isolation for 1 MHz SPI clocking with timing margin for setup and hold requirements.
Does ADUM1241ARZ-RL7 support independent supply voltages on each side?
Yes, ADUM1241ARZ-RL7 supports independent VDD1 and VDD2 supplies ranging from 2.25 V to 3.6 V. It is fully characterized for asymmetric operation, including VDD1 = 3.3 V / VDD2 = 2.5 V and VDD1 = 2.5 V / VDD2 = 3.3 V, enabling seamless level translation between different logic domains without external level shifters.
What is the isolation voltage rating for ADUM1241ARZ-RL7?
ADUM1241ARZ-RL7 is rated for 3000 Vrms for 1 minute per UL 1577, with a maximum working insulation voltage (VIORM) of 560 VPEAK per DIN V VDE V 0884-10. It meets CSA Component Acceptance Notice 5A and carries VDE certification for reinforced insulation in 8-lead SOIC packaging.
How does ADUM1241ARZ-RL7 achieve ultralow power consumption?
ADUM1241ARZ-RL7 achieves ultralow power via adaptive internal refresh circuitry and optimized transformer drive. With refresh enabled, it draws 5.6 μA per channel at 3.3 V; with refresh disabled (not applicable to ADUM1241ARZ-RL7, which lacks ENx pins), current drops to 0.3 μA per channel - enabling multi-year battery operation in remote sensing nodes.
Is ADUM1241ARZ-RL7 pin-compatible with other ADuM124x variants?
No - ADUM1241ARZ-RL7 uses the 8-lead SOIC package without ENx pins, whereas ADUM1241ARWZ (20-lead SSOP) includes EN1/EN2 pins for refresh control. Pinouts differ significantly: SOIC has VDD1-VIA-VIB-GND1-VOA-VOB-GND2-VDD2; SSOP adds 12 NIC and two EN pins. Direct replacement requires PCB redesign.
ADUM1241ARZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- iCoupler®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Magnetic Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 1/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 3000Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs
- Data Rate:
- 2Mbps
- Propagation Delay tpLH / tpHL (Max):
- 180ns, 180ns
- Pulse Width Distortion (Max):
- 8ns
- Rise / Fall Time (Typ):
- 2ns, 2ns
- Voltage - Supply:
- 2.25V ~ 3.6V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADUM1241ARZ-RL7 FAQ
1.How can I place an order for ADUM1241ARZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM1241ARZ-RL7 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 ADUM1241ARZ-RL7 reliable?
The price and inventory of ADUM1241ARZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM1241ARZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADUM1241ARZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM1241ARZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM1241ARZ-RL7?
ADUM1241ARZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM1241ARZ-RL7 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 ADUM1241ARZ-RL7?
For technical support, including ADUM1241ARZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM1241ARZ-RL7 requirements.
6.How does Aetrix verify that ADUM1241ARZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADUM1241ARZ-RL7 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 ADUM1241ARZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADUM1241ARZ-RL7?
All ADUM1241ARZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADUM1241ARZ-RL7, 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 ADUM1241ARZ-RL7 part is unused and in its original packaging.
Return procedure for ADUM1241ARZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM1241ARZ-RL7 Tags
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