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Analog Devices Inc. LTM2883IY-3I#PBF
- Part No.:
- LTM2883IY-3I#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 32-BBGA Module
- Datasheet:
-
LTM2883IY-3I#PBF.pdf
- Description:
- DGTL ISOL 2500VRMS 6CH I2C 32BGA
- Quantity:
- Payment:
- Shipping:
Inventory:200
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Product details
Overview
LTM2883IY-3I#PBF from Analog Devices (formerly Linear Technology) is a galvanically isolated 6-channel µModule isolator with integrated ±12.5V and 5V regulated isolated power supplies, supporting I²C master-mode communication at up to 400kHz. It operates from a single 3.3V input, delivers >20mA per isolated rail, and provides 2500VRMS isolation for ground-loop breaking in industrial sensor interfaces.
For engineers reviewing the LTM2883IY-3I#PBF datasheet, LTM2883IY-3I#PBF pinout, LTM2883IY-3I#PBF application, or LTM2883IY-3I#PBF equivalent, key selection criteria include its I²C-compatible dual-side logic supply (1.62–5.5V), ±10kV HBM ESD rating across the barrier, 30kV/µs common-mode transient immunity, and BGA-32 package with adjustable output voltages via external resistors.
Technical Context
The LTM2883IY-3I#PBF implements transformer-based galvanic isolation using coupled inductors and an isolation power transformer, enabling simultaneous data and power transfer across the barrier without external components. Its architecture supports bidirectional I²C signaling with internal current-source biasing on SDA2 and push-pull SCL2 outputs.
It features three independently regulated isolated supplies: VCC2 (5V, ≥20mA), V+ (+12.5V, ≥20mA), and V– (–12.5V, ≥15mA), each adjustable via dedicated AVx pins (AVCC2 = 600mV, AV+ = 1.22V, AV– = –1.22V referenced to GND2). The device includes built-in overtemperature protection and low-current shutdown mode (<10µA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2500VRMS for 1 minute (UL1577); enables safe operation in industrial mains-referenced systems |
| I²C Data Rate | 400kHz standard-mode; supports legacy and cost-sensitive sensor bus designs |
| Isolated Supplies | VCC2 = 5V/20mA, V+ = +12.5V/20mA, V– = –12.5V/15mA; powers op-amps, ADCs, or analog front-ends directly |
| Logic Supply Range | VL = 1.62V to 5.5V; allows interfacing with 1.8V, 3.3V, or 5V controllers without level shifters |
| Common-Mode Immunity | 30kV/µs; maintains reliable communication during fast transients in motor drives or PLC backplanes |
| ESD Rating | ±10kV HBM across isolation barrier; protects against handling and system-level ESD events |
| Operating Temp | –40°C to +85°C (Industrial grade); qualified for uncontrolled ambient environments |
Pinout & Package
Package: 32-pin BGA (15mm × 11.25mm × 3.42mm, 0.8mm pitch), RoHS-compliant SAC305 finish, MSL Level 4.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VL (A8) | Logic-side interface supply | Provides 1.62–5.5V bias for DI1, SCL, SDA, DO1, DO2, ON - decouples logic voltage from main VCC |
| SCL / SDA (A3/A4) | I²C master-side bidirectional bus | Direct connection to MCU I²C controller; SDA internally pulled high on isolated side (no external pull-up needed) |
| ON (A7) | Global enable control | Active-high signal that powers both sides; low state places all digital outputs in high-Z and disables isolated DC/DC |
| VCC2 (L6) | +5V isolated output | Regulated 5V supply (4.75–5.25V) capable of ≥20mA; bypassed internally with 2.2µF capacitor |
| V+ / V– (L8/L7) | +12.5V / –12.5V isolated rails | Independent ±12.5V supplies (±12V to ±13V range) for bipolar analog circuitry; each adjustable via AV+ / AV– pins |
| GND2 (K2–K5) | Isolated ground reference | Separate ground plane for isolated-side circuitry; must not be connected to primary-side GND |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Complete isolation solution with integrated DC/DC converter, eliminating discrete transformers, regulators, and gate drivers |
| Adjustable isolated supplies | VCC2, V+, and V– outputs tuned via single external resistor per rail using precise AVx reference voltages (600mV / ±1.22V) |
| I²C master-mode support only | Optimized for sensor-to-controller links; SCL2 is unidirectional push-pull, SDA2 uses 1.8mA current-source bias |
| High-speed digital isolation | 10MHz logic channel bandwidth ensures timing integrity for control signals and status flags |
| Robust transient immunity | 30kV/µs CMTI rating prevents data corruption during switching noise in inverters or solenoid drivers |
Applications
| Industrial Sensor Interface | Isolated Data Acquisition |
|---|---|
|
Use Scenario: Connecting temperature, pressure, or current sensors to a PLC CPU across noisy factory floors. IC Role / Device Role / Timing Role: Galvanic isolator bridging I²C sensor bus to controller while supplying ±12.5V for sensor excitation and signal conditioning. Use Value: Eliminates ground loops and enables operation with >560VPEAK working voltage, preventing measurement errors from common-mode noise. |
Use Scenario: Isolating 16-bit SAR ADCs in test equipment where analog front-end references must float relative to digital processing. IC Role / Device Role / Timing Role: Provides synchronized 5V and ±12.5V isolated supplies plus I²C data path for configuration and readback. Use Value: Delivers clean, regulated analog rails with <3mVRMS ripple at full load, preserving ADC SNR and THD performance. |
| Motor Drive Feedback | Medical Patient Monitoring |
|
Use Scenario: Isolating encoder or resolver feedback signals in servo drives subject to fast dv/dt transients. IC Role / Device Role / Timing Role: High-CMTI (30kV/µs) digital isolator protecting position data lines from inverter switching noise. Use Value: Maintains uninterrupted communication during repetitive 35kV/µs transients, ensuring real-time motion control reliability. |
Use Scenario: Isolating biopotential amplifier front-ends (ECG/EEG) from USB-connected host processors in bedside monitors. IC Role / Device Role / Timing Role: Provides reinforced isolation barrier meeting IEC 60601 creepage (9.48mm) and CTI (600V) requirements. Use Value: Achieves 2500VRMS withstand and ±10kV HBM ESD protection across barrier, satisfying patient safety standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated I²C interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM1250ARZ | 2-channel I²C isolator only; no integrated isolated power; requires external 5V supply on isolated side | Lower integration; suitable when isolated power is already available or when board space permits discrete DC/DC | Choose ADUM1250ARZ if system already provides isolated 5V and only signal isolation is needed. |
| SI8602AC-B-IS | 2-channel I²C isolator with 150Mbps max data rate; no isolated power; 5kVRMS isolation rating | Higher speed but no power integration; lacks ±12.5V rails needed for analog front-end biasing | Choose SI8602AC-B-IS for high-speed digital-only I²C links where bipolar analog supplies are unnecessary. |
Compared with ADUM1250ARZ and SI8602AC-B-IS, the LTM2883IY-3I#PBF uniquely integrates triple isolated power rails (5V, +12.5V, –12.5V) alongside I²C isolation, reducing BOM count by eliminating up to four discrete components and enabling direct powering of precision analog circuitry on the isolated side.
Availability
LTM2883IY-3I#PBF is available at Aetrix Electronics and suitable for industrial sensor interfaces, isolated data acquisition systems, and motor drive feedback circuits requiring stable component supply across extended temperature ranges and high-reliability isolation barriers.
Supply support for LTM2883IY-3I#PBF 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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.
The LTM2883 product line delivers fully integrated isolated µModule solutions targeting industrial automation, test equipment, and medical systems where compact size, high reliability, and simplified design are critical.
FAQ
What communication protocols does the LTM2883IY-3I#PBF support?
The LTM2883IY-3I#PBF supports I²C master-mode communication only, with guaranteed 400kHz operation. It does not support I²C slave mode, SPI, or UART. The part marking "I" in LTM2883IY-3I#PBF explicitly denotes the I²C variant, distinguishing it from the SPI-capable LTM2883-S family members.
Can the isolated power supplies of the LTM2883IY-3I#PBF be adjusted, and how?
Yes - the LTM2883IY-3I#PBF provides three adjustable isolated supplies: VCC2 (5V), V+ (+12.5V), and V– (–12.5V). Each is tuned using a single external resistor connected between the respective AVx pin (AVCC2, AV+, AV–) and the corresponding supply rail. The AVx pins maintain precise reference voltages (600mV, +1.22V, –1.22V), enabling accurate ratio-based adjustment.
What is the maximum continuous working voltage rating for the LTM2883IY-3I#PBF?
The LTM2883IY-3I#PBF has a maximum continuous working voltage (VIORM) of 560VPEAK, verified per IEC 60664-1 and UL1577. This rating applies to the reinforced insulation barrier between primary and secondary sides and supports use in 400VAC industrial mains-connected systems with appropriate creepage/clearance layout.
Does the LTM2883IY-3I#PBF require external bypass capacitors?
Yes - although the LTM2883IY-3I#PBF includes internal bypassing, external capacitors are mandatory per the datasheet: 2.2µF on VL and VCC, 2.2µF on VCC2, and 1µF each on V+ and V–. These ensure stable regulation under dynamic load and suppress switching noise from the integrated isolated DC/DC converter.
How does the LTM2883IY-3I#PBF handle isolation communication failures?
On isolation failure, the LTM2883IY-3I#PBF places logic-side outputs (DO1, DO2, SDA) into high-impedance state and forces isolated-side outputs (SCL2, SDA2, CS2, O1, I1, I2) to defined default states: SCL2 and CS2 go high, SDA2 defaults high via internal current source, and O1/I1/I2 go high. This fail-safe behavior prevents undefined bus states in safety-critical systems.
LTM2883IY-3I#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- µModule®
- Package/Case:
- 32-BBGA Module
- Packaging:
- Tray
- Product Status:
- Active
- Technology:
- Magnetic Coupling
- Type:
- I2C
- Isolated Power:
- Yes
- Number of Channels:
- 6
- Inputs - Side 1/Side 2:
- 3/3
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 30kV/µs
- Data Rate:
- 400kHz
- Propagation Delay tpLH / tpHL (Max):
- 350ns, 350ns
- Pulse Width Distortion (Max):
- -
- Rise / Fall Time (Typ):
- -
- Voltage - Supply:
- 3V ~ 3.6V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-BGA (15x11.25)
LTM2883IY-3I#PBF FAQ
1.How can I place an order for LTM2883IY-3I#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTM2883IY-3I#PBF 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 LTM2883IY-3I#PBF reliable?
The price and inventory of LTM2883IY-3I#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTM2883IY-3I#PBF is usually 5 days.
3.What payment methods are accepted for LTM2883IY-3I#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTM2883IY-3I#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTM2883IY-3I#PBF?
LTM2883IY-3I#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTM2883IY-3I#PBF 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 LTM2883IY-3I#PBF?
For technical support, including LTM2883IY-3I#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTM2883IY-3I#PBF requirements.
6.How does Aetrix verify that LTM2883IY-3I#PBF is sourced from the original manufacturer or authorized distributors?
All LTM2883IY-3I#PBF 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 LTM2883IY-3I#PBF meets industry standards.
7.What is the process for return or replacement of LTM2883IY-3I#PBF?
All LTM2883IY-3I#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTM2883IY-3I#PBF, 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 LTM2883IY-3I#PBF part is unused and in its original packaging.
Return procedure for LTM2883IY-3I#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTM2883IY-3I#PBF Tags
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