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Analog Devices Inc. AD260AND-2
- Part No.:
- AD260AND-2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 22-DIP Module
- Datasheet:
-
AD260AND-2.pdf
- Description:
- DGTL ISO 1.75KV GEN PURP 22DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,498
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Product details
Overview
AD260AND-2 from Analog Devices is a high-speed logic isolator with integrated 1.5 W isolated power transformer, configured for two system-side inputs and three field-side outputs. It delivers 20 MHz signal bandwidth, 14 ns propagation delay, and 3.5 kVrms isolation (B-grade), enabling robust digital I/O isolation in PLC analog I/O cards and motor drive controls.
For engineers reviewing the AD260AND-2 datasheet, AD260AND-2 pinout, AD260AND-2 application, or AD260AND-2 equivalent, key selection criteria include its 2-input/3-output I/O mapping, field/system enable-controlled three-state outputs, ±1 ns edge symmetry, and transformer-driven isolated power generation capability.
Technical Context
The AD260AND-2 implements Analog Devices' IsoLogic™ architecture using capacitive-coupled data transmission across a 3.5 kVrms isolation barrier, with five independent unidirectional logic channels mapped as S0–S1 (inputs) and F0–F2 (outputs). Each channel features a Schmitt-trigger input and transparent latch with continuous background update to guarantee output validity within 12 µs after power-up or fault recovery.
Its integral center-tapped transformer operates at 150–300 kHz push-pull drive, delivering up to 37 Vp-p secondary output for regulated ±5 V or 24 V field-side supplies. Common-mode transient immunity exceeds 10 kV/µs, and total isolation capacitance is 18 pF maximum.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 3.5 kVrms test voltage (100% production tested); supports UL1950/IEC950/EN60950 safety compliance |
| Logic Bandwidth | 20 MHz minimum; enables reliable NRZ data transmission up to 40 Mbps |
| Propagation Delay | 14 ns typical; ensures nanosecond-level timing integrity for PWM and high-speed control signals |
| Edge Symmetry Error | ±1 ns max (tPHL vs. tPLH); preserves waveform fidelity critical for time-sensitive feedback loops |
| Power Transformer Output | 37 Vp-p at 5 V drive; supports ≥1.0 W regulated isolated power (e.g., ±5 V, 24 V loop supply) |
| CMV Transient Immunity | ≥10 kV/µs; prevents false triggering in noisy industrial environments like IGBT motor drives |
| Operating Temperature | –25°C to +85°C rated performance; validated for industrial embedded systems |
Pinout & Package
AD260AND-2 is housed in a 22-lead plastic DIP (ND-22) package with 18 mm creepage distance between system and field sides, supporting 750 V mains isolation per CSA/IEC standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–2 (S0, S1) | System-side digital inputs | Accept HCMOS/ACMOS logic levels; Schmitt-triggered with 0.9–4.2 V threshold range |
| 3–5 (S2–S4) | No-connect (NC) on AD260AND-2 | Physically present but internally unconnected; must be left floating or tied to valid logic level per design |
| 6 (ENABLESYS) | System output enable | Three-states all system-side outputs (S0–S4) when low; enables multiplexing of multiple AD260 units |
| 7 (+5 VdcSYS) | System power supply | 4.5–5.5 V DC input; powers internal logic and transformer primary driver |
| 8 (5 V RTNSYS) | System ground reference | Return path for system-side supply and logic; requires local 0.01 µF bypass |
| 9–11 (DRVA, DRVCT, DRVB) | Transformer primary drive | Push-pull interface for 150–300 kHz excitation; DRVCT is center tap |
| 12–14 (PWRBFLD, PWRCTFLD, PWRAFLD) | Transformer secondary terminals | Deliver 37 Vp-p isolated AC; used with external rectification/regulation for field-side power |
| 15 (5 V RTNFLD) | Field ground reference | Return for field-side supply and logic; galvanically isolated from system ground |
| 16 (+5 VdcFLD) | Field power supply | 4.5–5.5 V DC input for field-side logic; powered externally or via regulated transformer output |
| 17 (ENABLEFLD) | Field output enable | Three-states all field-side outputs (F0–F2); allows safe power-up presetting with pull-up/down resistors |
| 18–20 (F0–F2) | Field-side digital outputs | Three-state CMOS-compatible outputs; updated within 12 µs after power-up or fault |
| 21–22 (F3–F4) | No-connect (NC) on AD260AND-2 | Physically present but internally unconnected; must be left floating or tied to valid logic level |
Key Features
| Feature | Design Value |
|---|---|
| Five-channel IsoLogic™ architecture | Replaces up to five optocouplers while integrating isolated power - reduces board area and BOM count |
| Configurable 2-input/3-output mapping | Fixed pin-compatible assignment (S0/S1 → F0/F1/F2) eliminates redesign when scaling I/O directionality |
| Continuous background output update | Guarantees valid output state within 12 µs post-power-up or fault - no external reset required |
| 100% production-tested 3.5 kVrms isolation | Ensures reliability in safety-critical applications without batch sampling or statistical qualification |
| Integrated 1.5 W transformer | Eliminates need for external isolated DC/DC converter - simplifies field-side power architecture |
Applications
| PLC Analog Input Card | IGBT Motor Drive Control |
|---|---|
Use Scenario: Isolating ADC/DAC control lines and status signals between microcontroller (system side) and field-side sensor/actuator circuitry. IC Role / Device Role / Timing Role: AD260AND-2 provides bidirectional digital isolation for configuration, calibration, and fault reporting with <14 ns timing precision. Use Value: Enables safe 750 V creepage-compliant interface while eliminating optocoupler latency and aging drift. | Use Scenario: Transmitting gate drive enable/disable and fault feedback signals between MCU and isolated IGBT gate drivers. IC Role / Device Role / Timing Role: AD260AND-2 serves as high-speed, noise-immune digital isolator for PWM command and DESAT response paths. Use Value: 10 kV/µs CMV immunity prevents spurious turn-on during fast IGBT switching transients. |
| Industrial Communications Bus | High-Speed Digital I/O Port |
Use Scenario: Isolating RS-485/RS-232 transceiver control lines (DE/RE, TXEN) and status flags in distributed I/O modules. IC Role / Device Role / Timing Role: AD260AND-2 isolates bus controller handshaking signals with precise edge alignment for deterministic protocol timing. Use Value: ±1 ns edge symmetry maintains setup/hold margins for UART and SPI clock domains across isolation barrier. | Use Scenario: Providing configurable digital I/O expansion for microcontroller-based controllers requiring mixed-direction signals. IC Role / Device Role / Timing Role: AD260AND-2 acts as a programmable 2-in/3-out isolated port expander with three-state control per side. Use Value: ENABLESYS/ENABLEFLD pins allow dynamic reconfiguration and safe hot-plug operation without signal contention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar logic isolator with integrated power applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM6420A | 4-channel, 25 Mbps, 2.5 kVrms isolation; integrated 500 mW DC/DC converter (no transformer taps) | Lacks configurable I/O direction; fixed 2-in/2-out; lower power output limits field-side rail flexibility | Select when compact 4-channel isolation suffices and transformer-based regulation is unnecessary |
| SI8662ED-B-IS | 6-channel, 150 Mbps, 5 kVrms isolation; no integrated power; requires external isolated DC/DC | Higher speed and isolation rating, but adds BOM cost and layout complexity for power conversion | Select when maximum data rate and safety margin outweigh need for integrated power |
Compared with AD260AND-2, ADUM6420A offers higher integration density but less flexible field-side power generation, while SI8662ED-B-IS delivers superior speed and isolation at the cost of external power design effort - AD260AND-2 uniquely balances configurable I/O, transformer-based power, and industrial-grade transient immunity.
Availability
AD260AND-2 is available at Aetrix Electronics and suitable for PLC/DCS analog I/O cards, IGBT motor drive controls, and high-speed digital I/O ports requiring stable component supply, long-term lifecycle support, and certified safety isolation.
Supply support for AD260AND-2 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 semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for industrial, automotive, and communications markets.
The AD260 product line was designed to replace optocoupler-based isolation with high-speed, low-latency, and integrated power solutions for industrial control and automation systems demanding reliability and safety certification.
FAQ
What is the isolation voltage rating of the AD260AND-2?
The AD260AND-2 is a B-grade device with a 3.5 kVrms isolation test voltage, 100% production tested per Analog Devices' standard method. Its operating isolation voltage is rated at 1.25 kVrms, compliant with UL1950, IEC950, and EN60950 safety standards. This rating applies across the full 22-pin ND-22 package with >18 mm creepage.
How does the AD260AND-2 handle power-up initialization?
The AD260AND-2 enters a power-up reset mode for ≈30 µs after either +5 VdcSYS or +5 VdcFLD exceeds 3.3 V, disabling all outputs. Within 12 µs after reset ends, the continuous update circuit guarantees valid output states reflecting current input logic - no external reset signal is needed for AD260AND-2 operation.
Can unused pins on the AD260AND-2 be left floating?
No. Pins S2–S4 and F3–F4 are no-connect on the AD260AND-2 but must not be left floating per Analog Devices' guidance. They should be tied to a valid logic high or low level using appropriate pull-up/pull-down resistors to prevent undefined behavior and ensure EMC compliance for AD260AND-2 installations.
What transformer drive frequency is recommended for the AD260AND-2?
Analog Devices specifies a recommended operating frequency of 150–300 kHz for the AD260AND-2's integral transformer, with an absolute minimum of 75 kHz. Push-pull drive at 5 V is required on DRVA/DRVCT/DRVB; deviation outside this range degrades power efficiency and may compromise isolation integrity for AD260AND-2.
Does the AD260AND-2 support bidirectional data transmission?
No. The AD260AND-2 implements five unidirectional logic channels with fixed directionality: S0 and S1 are inputs only, F0–F2 are outputs only. Bidirectional communication requires separate transmit/receive pairs or alternate configurations (e.g., AD260AND-3), as confirmed by the pin function table for AD260AND-2.
AD260AND-2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- IsoLogic™
- Package/Case:
- 22-DIP Module
- Packaging:
- Tube
- Product Status:
- Obsolete
- Technology:
- Magnetic Coupling
- Type:
- General Purpose
- Isolated Power:
- Yes
- Number of Channels:
- 5
- Inputs - Side 1/Side 2:
- 2/3
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 1750Vrms
- Common Mode Transient Immunity (Min):
- 10kV/µs
- Data Rate:
- -
- Propagation Delay tpLH / tpHL (Max):
- 25ns, 25ns
- Pulse Width Distortion (Max):
- -
- Rise / Fall Time (Typ):
- -
- Voltage - Supply:
- 4V ~ 5.75V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -25°C ~ 85°C
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 22-PDIP
AD260AND-2 FAQ
1.How can I place an order for AD260AND-2 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD260AND-2 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 AD260AND-2 reliable?
The price and inventory of AD260AND-2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD260AND-2 is usually 5 days.
3.What payment methods are accepted for AD260AND-2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD260AND-2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD260AND-2?
AD260AND-2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD260AND-2 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 AD260AND-2?
For technical support, including AD260AND-2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD260AND-2 requirements.
6.How does Aetrix verify that AD260AND-2 is sourced from the original manufacturer or authorized distributors?
All AD260AND-2 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 AD260AND-2 meets industry standards.
7.What is the process for return or replacement of AD260AND-2?
All AD260AND-2 units undergo pre-shipment inspection (PSI). If there is an issue with AD260AND-2, 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 AD260AND-2 part is unused and in its original packaging.
Return procedure for AD260AND-2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD260AND-2 Tags
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