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Analog Devices Inc. LTM2883CY-3I#PBF
- Part No.:
- LTM2883CY-3I#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 32-BBGA Module
- Datasheet:
-
LTM2883CY-3I#PBF.pdf
- Description:
- DGTL ISOL 2500VRMS 6CH I2C 32BGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,150
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Product details
Overview
LTM2883CY-3I#PBF from Analog Devices (formerly Linear Technology) is a galvanically isolated µModule I²C isolator with integrated ±12.5V and 5V regulated isolated power supplies. It operates from a 3.3V input, supports 400kHz I²C communication across the barrier, delivers up to 20mA per isolated rail, and provides 2500VRMS isolation rated per UL1577. It is used in industrial sensor interfaces where ground-loop elimination and dual-polarity biasing are required.
For engineers reviewing the LTM2883CY-3I#PBF datasheet, LTM2883CY-3I#PBF pinout, LTM2883CY-3I#PBF application, or LTM2883CY-3I#PBF equivalent, key selection criteria include its I²C master-mode compatibility, adjustable isolated supply capability via AV+, AV–, and AVCC2 pins, 30kV/µs common-mode transient immunity, and BGA-32 package footprint for space-constrained isolated subsystems.
Technical Context
The LTM2883CY-3I#PBF implements bidirectional I²C signal isolation using capacitive coupling across an internal isolation barrier, with dedicated SCL2/SDA2 push-pull and current-source outputs on the isolated side. Its integrated isolated DC/DC converter generates three independent regulated outputs - VCC2 (5V), V+ (+12.5V), and V– (–12.5V) - each adjustable via external resistors connected to AVCC2, AV+, and AV– pins.
It features fail-safe behavior: during isolation failure, SCL2 defaults high, SDA2 defaults high, and digital outputs enter high-impedance states. The device supports logic supply voltages from 1.62V to 5.5V (VL), enabling interoperability with low-voltage microcontrollers while maintaining full 400kHz I²C timing compliance under load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2500VRMS for 1 minute (UL1577); enables safe interface between hazardous and non-hazardous zones |
| I²C Data Rate | 400kHz standard-mode; ensures compatibility with legacy and mainstream I²C peripherals without clock stretching |
| VCC Input Range | 3.0V to 3.6V; matches standard 3.3V system rails with ±10% tolerance |
| Isolated Supplies | VCC2 = 5V/20mA, V+ = +12.5V/20mA, V– = –12.5V/15mA; powers op-amps, ADCs, or analog front-ends directly |
| Common-Mode Immunity | 30kV/µs; maintains reliable communication in noisy motor drives or PLC backplanes |
| Logic Supply Range (VL) | 1.62V to 5.5V; allows direct connection to 1.8V, 2.5V, 3.3V, or 5V controllers without level shifters |
| ESD Rating | ±10kV HBM across isolation barrier; protects against handling and system-level ESD events |
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 |
|---|---|---|
| SCL / SCL2 | I²C clock interface (logic/isolated side) | Unidirectional clock path; SCL2 is push-pull output - no external pull-up required |
| SDA / SDA2 | I²C bidirectional data interface | SDA2 has 1.8mA internal pull-up - eliminates need for external resistor on isolated side |
| AVCC2 / AV+ / AV– | Adjustment terminals for isolated supplies | Set VCC2, V+, V– output voltages via external resistor dividers referenced to GND2 |
| ON | Global enable control | Pulling ON low disables all isolated power and forces logic outputs into high-Z state |
| VL | Logic-side interface supply | Defines input thresholds and output drive strength for SCL, SDA, DO1, DO2, and ON |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Full isolation + triple regulated power in single BGA package - reduces BOM count and layout complexity |
| Adjustable isolated supplies | VCC2, V+, and V– each tunable via single external resistor - supports custom analog biasing without discrete regulators |
| I²C master-mode only support | Guaranteed timing compliance at 400kHz with built-in slew-rate control and fail-safe defaults |
| High-speed digital isolation | 10MHz logic channel bandwidth - accommodates future protocol upgrades or auxiliary GPIO signals |
| Low shutdown current | <10µA quiescent draw when ON = low - enables energy-sensitive always-on monitoring systems |
Applications
| Industrial Sensor Interface | Isolated Data Acquisition |
|---|---|
Use Scenario: Connecting thermocouple or strain-gauge sensors to a PLC CPU across noisy 48V DC bus environments. IC Role / Device Role / Timing Role: Provides galvanic isolation for I²C-based sensor readout while powering the sensor signal conditioner from V+ and V– rails. Use Value: Eliminates ground-loop errors and enables accurate µV-level measurements despite >30kV/µs transients on shared chassis ground. |
Use Scenario: Isolating 24-bit delta-sigma ADCs (e.g., ADS127L01) in test equipment requiring clean analog front-end biasing. IC Role / Device Role / Timing Role: Delivers tightly regulated ±12.5V analog supplies and clocks I²C configuration registers across isolation barrier. Use Value: Removes switching noise coupling from digital domain, preserving ENOB by ≥2 bits versus non-isolated designs. |
| Programmable Logic Controller I/O Module | Medical Patient Monitoring Interface |
Use Scenario: Adding isolated I²C slave ports to modular PLC backplane for third-party fieldbus gateways. IC Role / Device Role / Timing Role: Acts as isolated bridge between controller's 3.3V I²C bus and external modules operating at different ground potentials. Use Value: Enables hot-swappable I/O expansion without redesigning PCB stackup or adding discrete isolators and DC/DCs. |
Use Scenario: Isolating patient-connected ECG front-end ICs from hospital-grade USB/HDMI data aggregation units. IC Role / Device Role / Timing Role: Provides reinforced 2500VRMS isolation and 560VPEAK working voltage compliant with IEC 60601-1 creepage requirements. Use Value: Meets CF-rated patient isolation safety without external certification overhead or layout derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar I²C isolator with integrated power applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM1250ARZ | 2-channel I²C isolator only; no integrated power - requires external isolated DC/DC (e.g., ADuM5020) | Higher component count and board area; limited to 1Mbps max data rate but lower propagation delay (45ns) | Select when ultra-low latency is critical and board space permits separate power conversion |
| SI8602ED-B-IS | 2-channel digital isolator; no I²C-specific logic or integrated supplies - needs external level shifters and isolated bias | Requires external circuitry for I²C timing compliance and dual-rail generation; not drop-in compatible | Choose for cost-sensitive designs where full µModule integration is unnecessary and engineering resources exist for custom support circuitry |
Compared with ADUM1250ARZ and SI8602ED-B-IS, the LTM2883CY-3I#PBF uniquely integrates I²C protocol-aware isolation, triple adjustable isolated power, and fail-safe defaults in one package - reducing design cycle time, bill-of-materials cost, and validation effort for industrial and medical sensor interfaces.
Availability
LTM2883CY-3I#PBF is available at Aetrix Electronics and suitable for industrial automation, test and measurement equipment, and medical diagnostics systems requiring stable component supply, long-term lifecycle assurance, and certified isolation performance.
Supply support for LTM2883CY-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 power management semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTM2883CY-3I#PBF belongs to the µModule isolator product line, engineered to simplify high-reliability isolation design by integrating signal isolation, isolated power, and protection circuitry into compact, fully tested BGA packages.
FAQ
What is the operating temperature range for the LTM2883CY-3I#PBF?
The LTM2883CY-3I#PBF is specified for commercial temperature operation from 0°C to +70°C. This grade is validated per the LTM2883C temperature bin and is suitable for indoor industrial controls, laboratory instruments, and non-extended-environment embedded systems where ambient thermal management is controlled.
Can the LTM2883CY-3I#PBF support I²C slave devices?
No - the LTM2883CY-3I#PBF supports I²C master-mode only, as confirmed in the official datasheet. It does not implement clock stretching, arbitration, or multi-master collision detection. Slave-side I²C functionality must reside on the isolated side of the barrier, driven by the LTM2883CY-3I#PBF's SCL2 and SDA2 outputs.
How do I adjust the ±12.5V isolated supplies on the LTM2883CY-3I#PBF?
Connect external resistors between AV+ and GND2 (for V+), AV– and GND2 (for V–), and AVCC2 and GND2 (for VCC2). The adjustment follows the formula: VOUT = VREF × (1 + R1/R2), where VREF is 1.22V for AV+ and AV–, and 0.6V for AVCC2. Full details are in the LTM2883 datasheet Section 9.2.2.
Does the LTM2883CY-3I#PBF require external bypass capacitors?
Yes - although internal bypassing is provided, the datasheet mandates 2.2µF X5R ceramic capacitors on VCC and VL (logic side) and on VCC2 (isolated side), plus 1µF on V+ and V–. These must be placed within 3mm of respective pins to ensure stability and meet ripple/noise specifications under full load.
What is the maximum continuous working voltage rating for the LTM2883CY-3I#PBF?
The LTM2883CY-3I#PBF has a maximum continuous working voltage (VIORM) of 560VPEAK, verified per IEC 60747-17 and UL1577. This rating applies across the full isolation barrier (VCC/GND to VCC2/GND2/V+/V–) and supports reinforced insulation in 250VAC mains-connected systems.
LTM2883CY-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:
- 0°C ~ 70°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-BGA (15x11.25)
LTM2883CY-3I#PBF FAQ
1.How can I place an order for LTM2883CY-3I#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTM2883CY-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 LTM2883CY-3I#PBF reliable?
The price and inventory of LTM2883CY-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 LTM2883CY-3I#PBF is usually 5 days.
3.What payment methods are accepted for LTM2883CY-3I#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTM2883CY-3I#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTM2883CY-3I#PBF?
LTM2883CY-3I#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTM2883CY-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 LTM2883CY-3I#PBF?
For technical support, including LTM2883CY-3I#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTM2883CY-3I#PBF requirements.
6.How does Aetrix verify that LTM2883CY-3I#PBF is sourced from the original manufacturer or authorized distributors?
All LTM2883CY-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 LTM2883CY-3I#PBF meets industry standards.
7.What is the process for return or replacement of LTM2883CY-3I#PBF?
All LTM2883CY-3I#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTM2883CY-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 LTM2883CY-3I#PBF part is unused and in its original packaging.
Return procedure for LTM2883CY-3I#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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