Features and Benefits
- LTM2884: 2500VRMS for 1 Minute
- LTM2884(a): 3000VRMS for 1 Minute
- LTM2884: UL Recognized File #E151738
- LTM2884(a): CSA Recognized File #255632
- USB 2.0 Full Speed and Low Speed Compatible
- Integrated Isolated DC/DC Converter, External or Bus Powered
- Auto-Configuration of Bus Speed
- 2.5W (500mA at 5V) Output Power from External Input Supply (VCC = 8.6V to 16.5V)
- 1W (200mA at 5V) Output Power from USB Bus Supply (VBUS)
- 3.3V LDO Output Supply Signal References VLO, VLO2
- High Common Mode Transient Immunity: 30kV/μs
- ESD: ±15kV HBM on USB Interface Pins
- 15mm × 15mm × 5mm Surface Mount BGA Package
The LTM2884 is a complete galvanically isolated USB 2.0 compatible μModule® (micromodule) transceiver. An upstream supply powers both sides of the interface through an integrated, isolated DC/DC converter.
The LTM2884 is ideal for isolation in host, hub, bus splitter or peripheral device applications. It is compatible with USB 2.0 full speed (12Mbps) and low speed (1.5Mbps) operation. Automatic speed selection configures integrated pull-up resistors on the upstream port to match those sensed on the downstream device.
The isolator μModule technology uses coupled inductors and an isolated power transformer to provide isolation between the upstream and downstream USB interface. This device is ideal for systems requiring isolated ground returns or large common mode voltage variations. Uninterrupted communication is guaranteed for common mode transients greater than 30kV/μs.
Enhanced ESD protection allows this part to withstand up to ±15kV (human body model) on the USB transceiver interface pins to local supplies and ±15kV through the isolation barrier to supplies without latch-up or damage.
- Isolated USB Interfaces
- Host, Hub, or Device Isolation
- Industrial/Medical Data Acquisition
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Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (2)
Demonstration circuit 1789A is an isolated USB transceiver with isolated power featuring the LTM2884. The demo circuit features an EMI optimized circuit configuration and printed circuit board layout. All components are integrated into the μModule® isolator. The demo circuit operates from a supply on VCC and/or VBUS. The part generates an isolated output voltage on VCC2 and communicates all necessary signaling across the isolation barrier through LTC’s isolator μModule technology.
The LTP2884 is a complete USB isolator solution, ideal for any application requiring ground isolation, protection from large common mode voltage variations, or protection from spikes and surges. Built with convenience in mind, this robust isolator brings comprehensive protection to a wide variety of applications without the need for any configuration or additional software.
LTM2884 Companion Parts
Recommended Related Parts
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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.