My Inquiry
My Account
Analog Devices Inc. ADUM1200AR
- Part No.:
- ADUM1200AR
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADUM1200AR.pdf
- Description:
- DGTL ISO 2500VRMS 2CH GP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,263
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADUM1200AR from Analog Devices is a dual-channel, unidirectional digital isolator based on iCoupler® transformer technology, providing galvanic isolation between two independent logic domains. It supports 5 V or 3 V operation (2.7–5.5 V per side), delivers up to 1 Mbps data rate with ≤40 ns pulse width distortion, and operates reliably at 125°C ambient. It is used in isolated SPI interfaces and industrial RS-485 transceiver signal paths where compact size and low power are critical.
For engineers reviewing the ADUM1200AR datasheet, ADUM1200AR pinout, ADUM1200AR application, or ADUM1200AR equivalent, this page provides verified technical context, exact pin functions, real-world timing behavior, safety-certified isolation specs, and validated alternative options for industrial and automotive signal isolation design.
Technical Context
The ADUM1200AR implements two independent unidirectional isolation channels using monolithic air-core transformers and integrated CMOS interface circuitry - eliminating LED/photodiode aging and CTR drift inherent in optocouplers. Its architecture includes a patented refresh circuit ensuring DC-correct output during idle or power transitions.
Each channel features matched propagation delays (≤50 ns skew), precise edge timing (≤40 ns pulse width distortion), and high common-mode transient immunity (>25 kV/µs). It supports asymmetric supply configurations (e.g., 5 V primary / 3 V secondary) while maintaining full logic-level translation and guaranteed functionality across −40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2500 VRMS for 1 minute (UL 1577); VIORM = 560 VPEAK (DIN EN IEC 60747-17) |
| Max Data Rate | 1 Mbps - guaranteed pulse width distortion ≤40 ns at this rate |
| Supply Voltage Range | 2.7 V to 5.5 V per side - enables 3 V/5 V level translation across isolation barrier |
| Propagation Delay Skew | ≤50 ns - ensures tight timing alignment between channels for synchronous protocols |
| Common-Mode Transient Immunity | >25 kV/µs - maintains signal integrity in noisy motor drive or power converter environments |
| Operating Temperature | −40°C to +125°C - qualified for industrial and under-hood automotive use |
| Quiescent Current (per side) | VDD1: ≤1.4 mA, VDD2: ≤0.8 mA at DC–2 Mbps - enables low-power isolated sensing nodes |
Pinout & Package
Narrow-body SOIC-8 package (3.9 mm × 4.9 mm, 1.27 mm pitch), RoHS-compliant, creepage/clearance ≥5.5 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VDD1) | Primary-side power supply | Supplies input-side logic and isolation transmitter; accepts 2.7–5.5 V |
| 2 (GND1) | Primary-side ground reference | Return path for VDD1; must be separated from GND2 by isolation barrier |
| 3 (INA) | Channel A input | Unidirectional input signal referenced to GND1; drives isolated output VOA |
| 4 (INB) | Channel B input | Unidirectional input signal referenced to GND1; drives isolated output VOB |
| 5 (GND2) | Secondary-side ground reference | Return path for VDD2; electrically isolated from GND1 |
| 6 (VDD2) | Secondary-side power supply | Supplies output-side logic and isolation receiver; accepts 2.7–5.5 V |
| 7 (VOA) | Channel A output | Isolated CMOS output referenced to GND2; matches INA logic state with <150 ns delay |
| 8 (VOB) | Channel B output | Isolated CMOS output referenced to GND2; matches INB logic state with <150 ns delay |
Key Features
| Feature | Design Value |
|---|---|
| iCoupler® transformer isolation | Eliminates optocoupler CTR degradation, lifetime drift, and nonlinear transfer - enables stable 15+ year operation |
| Patented refresh circuit | Maintains correct DC output level during static input conditions and power-up/power-down sequences |
| High CMTI | >25 kV/µs common-mode transient immunity prevents false triggering in high-dV/dt environments (e.g., IGBT gate drivers) |
| Level translation | Supports 3 V ↔ 5 V logic translation across isolation barrier without external level shifters |
| UL/VDE/IEC safety certifications | Meets UL 1577 (2500 VRMS), DIN EN IEC 60747-17 (VIORM = 560 VPEAK), and IEC/EN/CSA 62368-1 |
Applications
| SPI Isolation Interface | RS-485 Transceiver Isolation |
|---|---|
|
Use Scenario: Isolating SPI clock, MOSI, MISO, and CS signals between MCU and isolated ADC/DAC in industrial PLC backplanes. IC Role / Device Role / Timing Role: Unidirectional isolator for SCLK and MOSI; bidirectional-capable variant not used - ADUM1200AR provides dedicated input→output direction per channel. Use Value: Prevents ground loop noise coupling into precision analog measurements while preserving sub-150 ns timing alignment between clock and data lines. |
Use Scenario: Isolating control and status signals between UART and RS-485 transceiver in motor drive inverters exposed to high EMI. IC Role / Device Role / Timing Role: Isolates DE/RE enable and RO receive signals - both referenced to MCU side (GND1) and driving transceiver side (GND2). Use Value: Enables robust communication over long cables in 600 V bus environments, leveraging >25 kV/µs CMTI to suppress switching noise-induced glitches. |
| Digital Fieldbus Node | Battery Management System (BMS) Signal Isolation |
|
Use Scenario: Isolating digital I/O and status reporting in PROFIBUS-DP slave nodes deployed in factory automation cabinets. IC Role / Device Role / Timing Role: Provides galvanic separation between field-side 24 V logic and controller-side 3.3 V/5 V logic, supporting 1 Mbps fieldbus cycle times. Use Value: Meets IEC/EN/CSA 62368-1 safety requirements for functional insulation while enabling compact PCB layout in space-constrained DIN-rail modules. |
Use Scenario: Isolating cell voltage monitor IC serial outputs from microcontroller in high-voltage EV battery packs (up to 800 VDC bus). IC Role / Device Role / Timing Role: Transfers low-speed telemetry (e.g., fault flags, temperature alerts) across isolation barrier with guaranteed DC correctness via refresh feature. Use Value: Ensures fail-safe monitoring continuity during cell balancing cycles when digital signals may remain static for extended periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel unidirectional digital isolation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8620ED-B-IS | Capacitive isolation; 1 Mbps rating; 2.5–5.5 V supply; lower quiescent current (0.8 mA total @ 5 V) | Higher CMTI (35 kV/µs); no refresh circuit - requires periodic input toggling for DC correctness | Preferred where ultra-low power dominates; verify refresh requirement compatibility with host protocol idle behavior |
| ISO7720DR | Capacitive isolation; 1 Mbps; 2.25–5.5 V supply; integrated noise filter; higher propagation delay skew (60 ns) | TI's reinforced isolation rating (5000 VRMS); wider operating temp (–55°C to +125°C); no refresh circuit | Selected when system-level reinforced isolation certification is mandatory; assess timing margin impact of higher skew |
Compared with SI8620ED-B-IS and ISO7720DR, the ADUM1200AR offers guaranteed DC correctness without input activity, tighter channel matching (50 ns vs. ≥60 ns), and proven transformer-based reliability in high-humidity industrial deployments - making it optimal for static-signal-critical BMS and PLC I/O isolation.
Availability
ADUM1200AR is available at Aetrix Electronics and suitable for industrial PLCs, motor drive control boards, battery management systems, and isolated communication interfaces requiring stable component supply across extended product lifecycles.
Supply support for ADUM1200AR 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 ADUM1200AR belongs to the iCoupler® digital isolator product line, designed specifically to replace optocouplers with higher reliability, lower power, and superior timing performance in safety-isolated signal interfaces.
FAQ
What is the maximum guaranteed data rate for ADUM1200AR?
The ADUM1200AR is rated for a maximum data rate of 1 Mbps, with pulse width distortion guaranteed ≤40 ns at that rate. This specification is validated across the full operating temperature range (−40°C to +125°C) and supply voltage range (2.7 V to 5.5 V per side). Higher-speed variants like ADUM1200BR (10 Mbps) and ADUM1200CR (25 Mbps) exist but are distinct orderable parts - ADUM1200AR must not be operated beyond 1 Mbps if guaranteed timing compliance is required.
Does ADUM1200AR support bidirectional communication on a single channel?
No, ADUM1200AR provides two unidirectional channels only: INA→VOA and INB→VOB. It does not support true bidirectional signaling (e.g., half-duplex UART on one pin pair). For bidirectional isolation, designers must use separate input/output pairs or select the ADUM1201AR variant, which configures one channel as input and the other as output - but ADUM1200AR itself has fixed unidirectional topology per channel as defined in its functional block diagram and pinout.
Can ADUM1200AR operate with different supply voltages on each side (e.g., 5 V on VDD1 and 3.3 V on VDD2)?
Yes, ADUM1200AR supports mixed-supply operation: 4.5–5.5 V on VDD1 and 2.7–3.6 V on VDD2 (or vice versa), enabling seamless 5 V ↔ 3.3 V logic level translation across the isolation barrier. Electrical characteristics including propagation delay, pulse width distortion, and supply current are fully specified for these asymmetric conditions in Table 3 of the datasheet, confirming reliable interoperability without external level shifters.
What safety certifications apply to ADUM1200AR?
ADUM1200AR is certified to UL 1577 (2500 VRMS for 1 minute), DIN EN IEC 60747-17 (VDE 0884-17) with VIORM = 560 VPEAK, IEC/EN/CSA 62368-1, IEC/CSA 61010-1, and CQC GB4943.1. These approvals validate its suitability for functional insulation in industrial equipment, medical peripherals, and automotive subsystems - though it is not AEC-Q100 qualified (that applies only to ADUM1200W/ADUM1201W variants).
How does the refresh feature in ADUM1200AR improve system reliability?
The refresh feature in ADUM1200AR actively monitors static input states and periodically retransmits the last valid logic level across the isolation barrier - ensuring correct DC output even during prolonged input inactivity or power sequencing events. This eliminates output indeterminacy seen in non-refresh isolators during MCU reset or bus idle periods, which is critical in safety-monitoring applications like BMS fault flag transmission or PLC watchdog signaling where signal persistence defines system state.
ADUM1200AR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- iCoupler®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Technology:
- Magnetic Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 2/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs
- Data Rate:
- 1Mbps
- Propagation Delay tpLH / tpHL (Max):
- 150ns, 150ns
- Pulse Width Distortion (Max):
- 40ns
- Rise / Fall Time (Typ):
- 10ns, 10ns
- Voltage - Supply:
- 2.7V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 105°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADUM1200AR FAQ
1.How can I place an order for ADUM1200AR through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM1200AR 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 ADUM1200AR reliable?
The price and inventory of ADUM1200AR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM1200AR is usually 5 days.
3.What payment methods are accepted for ADUM1200AR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM1200AR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM1200AR?
ADUM1200AR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM1200AR 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 ADUM1200AR?
For technical support, including ADUM1200AR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM1200AR requirements.
6.How does Aetrix verify that ADUM1200AR is sourced from the original manufacturer or authorized distributors?
All ADUM1200AR 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 ADUM1200AR meets industry standards.
7.What is the process for return or replacement of ADUM1200AR?
All ADUM1200AR units undergo pre-shipment inspection (PSI). If there is an issue with ADUM1200AR, 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 ADUM1200AR part is unused and in its original packaging.
Return procedure for ADUM1200AR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM1200AR Tags
-
ISO1212DBQR
Texas Instruments
-
ISO6721BDR
Texas Instruments
-
SI8710AC-B-ISR
Skyworks Solutions Inc.
-
ISO7720FDR
Texas Instruments
-
ISO7721DR
Texas Instruments
-
ISO7721FDR
Texas Instruments
-
SI8710CC-B-ISR
Skyworks Solutions Inc.
-
ISO6741FQDWRQ1
Texas Instruments
-
ISO7721DWVR
Texas Instruments
-
ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
