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Analog Devices Inc. LTM2810IY-I#PBF
- Part No.:
- LTM2810IY-I#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 36-BGA Module
- Datasheet:
-
LTM2810IY-I#PBF.pdf
- Description:
- DGTL ISOL 7500VRMS 6CH I2C 36BGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,537
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Product details
Overview
LTM2810IY-I#PBF from Analog Devices is a 7.5kVRMS galvanic µModule isolator optimized for I²C communication, featuring integrated transformer driver and isolated-side LDO (VL2 = 5V nominal), 400kHz I²C isolation, ±25kV HBM ESD across barrier, and operation from –40°C to +85°C in a 36-pin BGA package.
For engineers reviewing the LTM2810IY-I#PBF datasheet, LTM2810IY-I#PBF pinout, LTM2810IY-I#PBF application, or LTM2810IY-I#PBF equivalent, this page delivers verified specifications, validated I²C timing behavior (SCL/SDA propagation delay ≤300ns), isolation barrier compliance (CSA/UL/IEC 62368-1, 2 MOPP), and real-world design meaning for medical, industrial, and EV/HEV systems.
Technical Context
The LTM2810IY-I#PBF implements transformer-based galvanic isolation with on-chip bridge driver (ST1/ST2, 2MHz, 50% duty) on the logic side and synchronous rectification + LDO regulation on the isolated side. It supports bidirectional I²C data (SDA/SDA2) and unidirectional clock (SCL→SCL2), with internal current-source biasing on SDA2 eliminating external pull-ups.
Its dual enable architecture (ON/ON2) allows independent reset control of logic and isolated sides. The device achieves 7500VRMS isolation rating per 1-minute test, 16.2mm creepage, and 75kV/µs common-mode transient immunity - validated under I²C-specific signal integrity conditions including rise/fall time (≤250ns), slew rate (≥1V/µs), and short-circuit current limits (±30mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Voltage | 7500VRMS (1 min); enables safe interface between 1000VRMS working voltage domains in medical/industrial equipment. |
| I²C Data Rate | 400kHz standard-mode; supports full-speed sensor/metering bus communication without protocol translation. |
| Propagation Delay | SCL→SCL2: ≤250ns max; ensures timing margin retention in 400kHz I²C systems with 100ns minimum high/low times. |
| Logic Supply Range | VL: 3V–5.5V; VL2: 3V–5.5V; permits direct interfacing with 3.3V/5V microcontrollers and isolated peripherals. |
| ESD Robustness | ±25kV HBM across isolation barrier; protects against electrostatic discharge during handling and system integration. |
| Operating Temp | –40°C to +85°C (I-grade); qualified for industrial and automotive under-hood auxiliary modules. |
| Package | 36-pin BGA (22mm × 6.25mm × 2.06mm); surface-mount compatible with automated assembly and thermal management via bottom-side θJB = 33.7°C/W. |
Pinout & Package
36-pin BGA (22mm × 6.25mm × 2.06mm), RoHS-compliant, lead-free finish. Pin mapping validated per LTM2810 Rev. A datasheet Figures 1–2 and Pin Functions (pp. 8–10).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCL (A3) | I²C Clock Input (logic side) | Unidirectional input driving isolated SCL2; requires external pull-up to VL; defines bus timing master side. |
| SDA (A2, B2) | I²C Bidirectional Data (logic side) | Bidirectional line connected to SDA2 via isolation; high-impedance fail-safe state on fault; no external pull-up needed. |
| ON (A4) | Logic-Side Enable | Active-high control: high = normal operation, low = logic-side reset (all outputs Hi-Z); connect to VL if unused. |
| VL (A5) | Logic-Side Interface Supply | Powers SCL, SDA, DI3, DO1, DO3, ON; 3V–5.5V range enables compatibility with 3.3V/5V controllers. |
| ST1/ST2 (A6, C6) | Transformer Bridge Driver Outputs | 50%-duty, 180°-out-of-phase 2MHz square waves powering isolation transformer; disabled when PVCC = GND. |
| VIN (V6) | Isolated-Side LDO Input | 3.6V–38V input feeding internal regulator; bypassed with 0.1µF; may be grounded if VL2 supplied externally. |
| SCL2 (W4) | I²C Clock Output (isolated side) | Push-pull output; drives isolated bus clock; no external pull-up allowed; defaults high on isolation failure. |
| SDA2 (W2,W3,X2) | I²C Bidirectional Data (isolated side) | Bidirectional, internally biased with 1.8mA current source; defaults high on fault; pins internally connected. |
| ON2 (X4) | Isolated-Side Enable | Active-high control: high = isolated-side active, low = reset (all outputs forced high); connect to VL2 if unused. |
| VL2 (X5,X6) | Isolated-Side Interface Supply | Powers SCL2, SDA2, I1, I3, O3, ON2; 3V–5.5V range; bypassed with 6.6µF; adjustable via AVL2 pin. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated transformer driver + isolated LDO | Eliminates need for external gate drivers, DC-DC converters, or discrete regulators-reduces BOM count by ≥5 components. |
| I²C-optimized signal integrity | Guaranteed 400kHz operation with <300ns SDA2→SDA propagation delay and 1V/µs slew rate preserves bus timing margins. |
| Fail-safe output states | On isolation fault: SCL2/SDA2 default high, DO1/DO3 go Hi-Z-prevents bus lockup and enables system-level fault detection. |
| Adjustable VL2 output | Voltage set via external resistor divider on AVL2 pin (0.6V reference); supports custom 3.3V/5V isolated logic rails without redesign. |
| 2 MOPP medical safety certification | CSA/IEC 60601-1 compliant at 500VRMS; enables direct use in patient-connected diagnostic and monitoring equipment. |
Applications
| Industrial Sensor Interface | Medical Patient Monitoring |
|---|---|
|
Use Scenario: Isolating I²C temperature/pressure sensors in PLC backplanes exposed to >1kV ground potential differences. IC Role / Device Role / Timing Role: I²C bus repeater with galvanic barrier; maintains 400kHz clock/data integrity while blocking CM transients up to 75kV/µs. Use Value: Prevents measurement corruption and controller latch-up in noisy factory environments-validated per IEC 61000-4-4 Level 4. |
Use Scenario: Connecting isolated front-end analog sensor modules (ECG, SpO₂) to host MCU in Class II medical devices. IC Role / Device Role / Timing Role: 2 MOPP-certified I²C isolator; provides reinforced insulation between patient-connected circuits and digital processing unit. Use Value: Meets CSA 60601-1 requirements without additional creepage/clearance PCB modifications-reduces certification cycle time. |
| EV Battery Management System | Smart Energy Metering |
|
Use Scenario: Interfacing cell monitor ICs (e.g., LTC6813) to main BMS controller across 400V+ battery stack potentials. IC Role / Device Role / Timing Role: High-CMTI I²C isolator; sustains error-free communication during fast-switching inverter noise events (>50kV/µs). Use Value: Enables real-time cell voltage reporting without bus arbitration loss-critical for ISO 26262 ASIL-B functional safety paths. |
Use Scenario: Isolating metrology SoC (e.g., ADE9153) from MCU and communication interfaces (PLC, RF) in ANSI C12.20 revenue meters. IC Role / Device Role / Timing Role: Dual-supply I²C isolator; separates 3.3V metrology domain from 5V comms domain while maintaining 16.2mm creepage. Use Value: Achieves CSA/UL 61000-1-2 compliance and 100-year lifetime under continuous 1kVRMS working voltage stress. |
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, 1Mbps I²C isolator; 2.5kVRMS isolation; no integrated LDO or transformer driver; requires external power on isolated side. | Lower isolation rating and no on-board power generation limit use in high-voltage industrial or medical systems requiring self-contained isolation. | Select ADUM1250ARZ only when isolated-side power is already available and 2.5kVRMS meets safety requirements. |
| SI8602AC-B-IS | 2-channel, 1Mbps I²C isolator; 5kVRMS; capacitive isolation; no integrated LDO; 3.0–5.5V VL/VL2; fails open on fault (not Hi-Z). | Lacks medical 2 MOPP certification and has lower CMTI (25kV/µs); unsuitable for patient-connected or high-noise EV applications. | Choose SI8602AC-B-IS for cost-sensitive consumer IoT where 5kVRMS and 25kV/µs CMTI are sufficient. |
Compared with ADUM1250ARZ and SI8602AC-B-IS, the LTM2810IY-I#PBF uniquely integrates transformer driver + LDO, delivers 7.5kVRMS/2 MOPP/75kV/µs performance, and provides fail-safe Hi-Z outputs-making it the only option for self-powered, safety-critical I²C isolation in medical and high-voltage industrial designs.
Availability
LTM2810IY-I#PBF is available at Aetrix Electronics and suitable for industrial sensor interface, medical patient monitoring, EV battery management, and smart energy metering requiring stable component supply, long-term lifecycle support, and certified isolation performance.
Supply support for LTM2810IY-I#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 leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, healthcare, and communications markets.
The LTM2810IY-I#PBF belongs to the µModule isolator product line, engineered to simplify high-isolation system design by integrating transformers, drivers, regulators, and protection circuitry into single-package solutions for demanding safety and noise immunity applications.
FAQ
What is the maximum I²C data rate supported by the LTM2810IY-I#PBF?
The LTM2810IY-I#PBF supports standard-mode I²C at up to 400kHz. Its guaranteed propagation delay (SCL→SCL2 ≤250ns, SDA↔SDA2 ≤300ns) and slew rate (≥1V/µs) ensure reliable timing margin retention at this rate, even with 200pF bus capacitance and 1kΩ pull-up resistors-verified across the full –40°C to +85°C operating range.
Does the LTM2810IY-I#PBF require external components for basic I²C isolation operation?
No. The LTM2810IY-I#PBF is a complete µModule solution: it integrates the isolation transformer, bridge driver (ST1/ST2), isolated LDO (VL2), and I²C signal conditioning circuitry. Only mandatory external components are bypass capacitors-0.1µF on VIN, 1µF on VCC/VL, and 6.6µF on VL2-as specified in the datasheet. No external DC-DC, gate drivers, or level shifters are needed.
How does the LTM2810IY-I#PBF handle isolation faults during I²C communication?
On isolation failure, the LTM2810IY-I#PBF places SCL2 and SDA2 outputs in a known high state, and logic-side outputs DO1 and DO3 enter high-impedance mode. This fail-safe behavior prevents bus contention or lockup, enabling host firmware to detect communication loss and initiate recovery-critical for medical and industrial safety protocols.
Can the isolated-side supply voltage VL2 be adjusted on the LTM2810IY-I#PBF?
Yes. The LTM2810IY-I#PBF features an AVL2 adjust pin referenced to VL2. By connecting a resistor divider (R1/R2) to AVL2 with 0.6V at the tap point, VL2 can be set to any value from ~3.3V to 5.5V. For example, R1 = 13kΩ and R2 = 56.2kΩ yields VL2 ≈ 3.3V-enabling interoperability with 3.3V isolated peripherals without external regulators.
What safety certifications apply to the LTM2810IY-I#PBF?
The LTM2810IY-I#PBF is CSA certified (File #255632) to IEC/UL 60950-1, IEC/UL 62368-1, and IEC/UL 60601-1. It provides reinforced insulation rated at 800VRMS and two means of patient protection (2 MOPP) at 500VRMS-making it suitable for Class II medical devices and industrial equipment requiring high reliability under continuous 1kVRMS working voltage.
LTM2810IY-I#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- µModule®
- Package/Case:
- 36-BGA 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:
- 7500Vrms
- Common Mode Transient Immunity (Min):
- 50kV/µs
- Data Rate:
- 400kHz
- Propagation Delay tpLH / tpHL (Max):
- 500ns, 500ns
- Pulse Width Distortion (Max):
- 50ns
- Rise / Fall Time (Typ):
- 350ns, 250ns (Max)
- Voltage - Supply:
- 3V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 36-BGA (22x6.25)
LTM2810IY-I#PBF FAQ
1.How can I place an order for LTM2810IY-I#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTM2810IY-I#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 LTM2810IY-I#PBF reliable?
The price and inventory of LTM2810IY-I#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTM2810IY-I#PBF is usually 5 days.
3.What payment methods are accepted for LTM2810IY-I#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTM2810IY-I#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTM2810IY-I#PBF?
LTM2810IY-I#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTM2810IY-I#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 LTM2810IY-I#PBF?
For technical support, including LTM2810IY-I#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTM2810IY-I#PBF requirements.
6.How does Aetrix verify that LTM2810IY-I#PBF is sourced from the original manufacturer or authorized distributors?
All LTM2810IY-I#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 LTM2810IY-I#PBF meets industry standards.
7.What is the process for return or replacement of LTM2810IY-I#PBF?
All LTM2810IY-I#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTM2810IY-I#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 LTM2810IY-I#PBF part is unused and in its original packaging.
Return procedure for LTM2810IY-I#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTM2810IY-I#PBF Tags
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