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Analog Devices Inc. LTM2887IY-5I#PBF
- Part No.:
- LTM2887IY-5I#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 32-BBGA Module
- Datasheet:
-
LTM2887IY-5I#PBF.pdf
- Description:
- DGTL ISOL 2500VRMS 6CH I2C 32BGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,625
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Product details
Overview
LTM2887IY-5I#PBF from Analog Devices is a galvanically isolated µModule I²C isolator with dual 5V isolated regulators, rated for 2500VRMS isolation and ±10kV HBM ESD across the barrier. It operates from a single 4.5–5.5V input, delivers >100mA per regulator, supports 400kHz I²C communication, and features programmable current limiting via external resistors. It is used in industrial sensor interfaces where ground-loop elimination and high common-mode transient immunity (>30kV/µs) are critical.
For engineers reviewing the LTM2887IY-5I#PBF datasheet, LTM2887IY-5I#PBF pinout, LTM2887IY-5I#PBF application, or LTM2887IY-5I#PBF equivalent, key selection considerations include its I²C master-only support, dual adjustable 5V isolated supplies, 32-pin BGA package (15mm × 11.25mm × 3.42mm), industrial temperature range (–40°C to +85°C), and integrated DC/DC converter requiring no external magnetics.
Technical Context
The LTM2887IY-5I#PBF implements coreless transformer-based signal isolation with built-in error checking and automatic fail-safe shutdown. Its isolated side integrates two independent 5V regulators (VCC2 and VL2), each with precision current limit adjustment via IVCC2 and IVL2 pins and output voltage trimming via AVCC2/AVL2 pins.
It supports only I²C master-side signaling: SCL/SDA on the logic side drive SCL2/SDA2 on the isolated side with push-pull and current-source outputs respectively. The device enforces strict input thresholds (0.3×VL / 0.7×VL) and guarantees 400kHz operation with 150–500ns propagation delay and 40–250ns rise/fall times under 200pF bus load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2500VRMS for 1 minute - meets UL-CSA recognition (File #E151738) and enables safe separation of hazardous and non-hazardous circuits. |
| I²C Data Rate | 400kHz - supports standard-mode I²C peripherals without clock stretching or protocol modification. |
| Regulated Outputs | VCC2 and VL2: 4.75–5.25V at ≥100mA each - powers isolated sensors, ADCs, or microcontrollers without external LDOs. |
| Common-Mode Immunity | ≥30kV/µs - ensures uninterrupted communication during fast transients in motor drives or power converters. |
| Logic Supply Range | VL = 3V to 5.5V - allows direct interfacing with 3.3V or 5V host MCUs without level shifters. |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including factory automation and test equipment. |
| Package | 32-pin BGA (15mm × 11.25mm × 3.42mm) - surface-mount compatible with standard reflow profiles; moisture-sensitive level 3. |
Pinout & Package
Package: 32-pin Ball Grid Array (BGA), 15mm × 11.25mm × 3.42mm, MSL Level 3, lead-free (PBF).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 (DO2) | Digital Output (logic side) | Drives I2 on isolated side; high-impedance on isolation fault - prevents unintended activation of downstream circuitry. |
| A3 (SCL) | I²C Clock Input (logic side) | Unidirectional master clock input; must not be floated - ties directly to MCU SCL with no pull-up required. |
| A4 (SDA) | I²C Data Bidirectional (logic side) | Bidirectional data line; high-impedance on fault - requires external pull-up on logic side only. |
| A5 (DI1) | Digital Input (logic side) | Directly maps to O1 on isolated side - enables auxiliary control signaling independent of I²C bus. |
| A7 (ON) | Enable Control | Active-high enable; resets logic outputs and disables isolated power when low - supports controlled power sequencing. |
| A8 (VL) | Logic Supply Input | 3V–5.5V interface supply for all logic-side pins - internally bypassed with 1µF capacitor. |
| B7–B8 (VCC) | Main Input Supply | 4.5V–5.5V primary supply powering both sides - internally bypassed with 2.2µF capacitor. |
| K1 (I1) | Digital Input (isolated side) | Maps to DO1 on logic side - allows isolated-side devices to send status or interrupt signals back across barrier. |
| L1 (I2) | Digital Input (isolated side) | Maps to DO2 on logic side - provides second dedicated feedback channel for system monitoring. |
| L3 (SCL2) | I²C Clock Output (isolated side) | Push-pull output; no external pull-up needed - eliminates bus contention risk in isolated domains. |
| L4 (SDA2) | I²C Data Bidirectional (isolated side) | Current-source biased high (1.8mA); no external pull-up - ensures robust low-voltage operation on isolated bus. |
| L6 (VL2) | Adjustable 5V Isolated Supply | 5V nominal output (4.75–5.25V), 1.8V–5.5V adjustable range - powers isolated I²C slaves or analog front-ends. |
| L7 (IVCC2) | VCC2 Current Limit Adjust | Resistor-to-GND2 sets precise current limit (49–115mA) - enables tailored protection for connected loads. |
| L8 (VCC2) | Adjustable 5V Isolated Supply | 5V nominal output (4.75–5.25V), 0.6V–5.5V adjustable range - powers isolated microcontrollers or level translators. |
| K7 (IVL2) | VL2 Current Limit Adjust | Resistor-to-GND2 sets precise current limit (49–115mA) - independently protects second isolated rail. |
| K6 (AVL2) | VL2 Output Voltage Trim | 600mV reference pin - external resistor divider adjusts VL2 output voltage without affecting regulation accuracy. |
| K8 (AVCC2) | VCC2 Output Voltage Trim | 600mV reference pin - external resistor divider adjusts VCC2 output voltage while maintaining tight load regulation. |
| GND / GND2 | Logic & Isolated Grounds | Physically separated ground planes - mandatory for galvanic isolation integrity and noise rejection. |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Integrated DC/DC converter, regulators, and isolation transformers eliminate discrete magnetics, LDOs, and bypass networks - reduces BOM count and layout area by >70%. |
| Programmable current-limited dual 5V supplies | VCC2 and VL2 each support 49–115mA current limit via external resistors - enables safe powering of diverse isolated loads without overcurrent risk. |
| I²C master-mode only with fail-safe defaults | SCL2 defaults high, SDA2 defaults high on isolation fault - prevents bus lockup and ensures predictable state during failure. |
| ±10kV HBM ESD across isolation barrier | Robust electrostatic discharge protection between logic and isolated domains - eliminates need for external TVS diodes on isolated bus lines. |
| Low shutdown current (<10µA) | ON pin disables both power and data paths - enables ultra-low-power sleep modes in battery-backed or energy-conscious systems. |
| High-speed digital isolation (10MHz) | Supports non-I²C digital signals (DI1/DO1, I1/O1) at up to 10MHz - extends utility beyond I²C to general-purpose level-shifting and control isolation. |
Applications
| Industrial Sensor Interface | Isolated Power Monitor |
|---|---|
Use Scenario: Connecting temperature, pressure, or current sensors to a PLC controller across noisy 48V or 24V field buses. IC Role / Device Role / Timing Role: I²C isolator and dual 5V power source for isolated sensor nodes, breaking ground loops between field and control cabinets. Use Value: Enables error-free 400kHz I²C communication despite >30kV/µs transients induced by nearby contactors or VFDs. |
Use Scenario: Monitoring AC mains voltage/current using shunt-based or Hall-effect sensors in smart breakers or energy meters. IC Role / Device Role / Timing Role: Galvanic barrier for I²C data and local 5V power delivery to isolated ADC and sensing circuitry. Use Value: Eliminates measurement offset caused by ground potential differences between metering IC and host MCU. |
| Test Equipment Front-End | Motor Drive Feedback Interface |
Use Scenario: Isolating DMM or oscilloscope input channels from internal digital processing unit to prevent noise coupling. IC Role / Device Role / Timing Role: Dual-rail isolated power + I²C interface for calibration DACs, multiplexers, and sensor biasing circuits. Use Value: Maintains 16-bit measurement accuracy by suppressing common-mode noise from switching power supplies. |
Use Scenario: Interfacing isolated gate drivers or position encoders to a central motion controller in servo drives. IC Role / Device Role / Timing Role: I²C isolator for encoder configuration and status reads, plus regulated 5V for encoder logic supply. Use Value: Prevents encoder data corruption during 10kV+ common-mode spikes generated by IGBT switching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar I²C isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM1250ARZ | 2-channel I²C isolator only; no integrated power - requires external isolated DC/DC converter and LDOs for 5V rails. | Lower integration; suitable when board space allows discrete power solution and cost sensitivity outweighs design simplicity. | Select ADUM1250ARZ if existing design already uses isolated power modules and only signal isolation is needed. |
| SI8602ED-B-IS | Single 5V isolated supply only; no dual-regulator capability - cannot independently power two isolated subsystems. | Reduced flexibility for systems requiring separate 5V rails for analog and digital sections on isolated side. | Choose SI8602ED-B-IS when only one 5V rail is required and footprint constraints favor smaller SOIC-8 package. |
Compared with ADUM1250ARZ and SI8602ED-B-IS, the LTM2887IY-5I#PBF uniquely integrates dual programmable 5V regulators and full I²C master support in a single BGA package - eliminating six or more external components while enabling compact, self-powered isolated subsystems.
Availability
LTM2887IY-5I#PBF is available at Aetrix Electronics and suitable for industrial sensor interfaces, isolated power monitors, test equipment front-ends, and motor drive feedback interfaces requiring stable component supply, long-term lifecycle assurance, and guaranteed traceable sourcing.
Supply support for LTM2887IY-5I#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. is a global semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, industrial automation, and communications.
The LTM2887 product line delivers fully integrated isolated µModule solutions - designed to replace complex discrete isolation + power designs with single-package alternatives for industrial, test, and medical systems demanding reliability and rapid time-to-market.
FAQ
What communication protocols does the LTM2887IY-5I#PBF support?
The LTM2887IY-5I#PBF supports I²C master-mode communication only at up to 400kHz. It does not support I²C slave operation, SMBus, or SPI. Its logic-side SCL/SDA pins connect to an MCU's I²C master, while SCL2/SDA2 drive the isolated bus. Non-I²C digital signals can be routed through DI1/DO1 and I1/O1 channels at up to 10MHz.
Can the LTM2887IY-5I#PBF power both an isolated ADC and a microcontroller simultaneously?
Yes. The LTM2887IY-5I#PBF provides two independent 5V isolated supplies: VCC2 and VL2, each capable of delivering >100mA. VCC2 (0.6V–5.5V adjustable) can power a microcontroller, while VL2 (1.8V–5.5V adjustable) can power an ADC or sensor - both with programmable current limiting via IVCC2 and IVL2 pins.
What is the purpose of the AVCC2 and AVL2 pins on the LTM2887IY-5I#PBF?
AVCC2 and AVL2 are voltage trim reference pins (600mV nominal) for the VCC2 and VL2 regulators. Connecting resistor dividers from these pins to GND2 allows precise adjustment of the respective output voltages without degrading regulation accuracy or load transient response - enabling custom rail voltages for specific isolated ICs.
Does the LTM2887IY-5I#PBF require external capacitors?
Yes. The LTM2887IY-5I#PBF requires external bypass capacitors: 2.2µF on VCC, 1µF on VL, and 4.7µF on both VCC2 and VL2. These are specified in the datasheet for stability and ripple suppression. The internal 10nF capacitors on IVCC2/IVL2 eliminate need for additional filtering on current-limit adjust pins.
How does the LTM2887IY-5I#PBF handle isolation faults?
On isolation fault, the LTM2887IY-5I#PBF places DO1, DO2, SDA, and SDA2 into high-impedance states, while SCL2 and CS2 default to high and O1 defaults to high. This fail-safe behavior prevents bus contention or unintended activation of downstream devices - ensuring system-level safety without external supervision circuitry.
LTM2887IY-5I#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):
- 250ns, 250ns
- Pulse Width Distortion (Max):
- -
- Rise / Fall Time (Typ):
- 250ns, 250ns (Max)
- Voltage - Supply:
- 4.5V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-BGA (15x11.25)
LTM2887IY-5I#PBF FAQ
1.How can I place an order for LTM2887IY-5I#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTM2887IY-5I#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 LTM2887IY-5I#PBF reliable?
The price and inventory of LTM2887IY-5I#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTM2887IY-5I#PBF is usually 5 days.
3.What payment methods are accepted for LTM2887IY-5I#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTM2887IY-5I#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTM2887IY-5I#PBF?
LTM2887IY-5I#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTM2887IY-5I#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 LTM2887IY-5I#PBF?
For technical support, including LTM2887IY-5I#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTM2887IY-5I#PBF requirements.
6.How does Aetrix verify that LTM2887IY-5I#PBF is sourced from the original manufacturer or authorized distributors?
All LTM2887IY-5I#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 LTM2887IY-5I#PBF meets industry standards.
7.What is the process for return or replacement of LTM2887IY-5I#PBF?
All LTM2887IY-5I#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTM2887IY-5I#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 LTM2887IY-5I#PBF part is unused and in its original packaging.
Return procedure for LTM2887IY-5I#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTM2887IY-5I#PBF Tags
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ISO1212DBQR
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ISO6721BDR
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SI8710AC-B-ISR
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ISO7720FDR
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ISO7721DR
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ISO7721FDR
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SI8710CC-B-ISR
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ISO6741FQDWRQ1
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ISO7721DWVR
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ISO7762FDBQR
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ISO7741DWR
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ISO7741FDWR
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