Analog Devices Inc. LTM2884/2892/2894 Isolated μModule® Transceivers

Analog Devices Inc. LTM2884/2892/2894 Isolated μModule® Transceivers are complete galvanically isolated μModule transceivers (LTM2884, LTM2894) or isolator (LTM2892). The LTM2894/2892/2884 transceivers are a complete system-in-package (SiP) solution that offers up to 7.4kVRMS isolation.

The LTM2884 and LTM2894 are excellent for isolation in host, hub, bus splitter or peripheral device applications. The LTM2892 offers uninterrupted communication through large common-mode transients faster than 50kV/μs in systems where the ground loop is broken.

The modulators have optimized performance and high integration with small footprints, and need no external components. The Analog Devices Inc. LTM2894/2892/2884 Isolated μModule Transceivers offer complete isolation for the most popular serial interfaces and devices, including USB, RS485, RS232, SPI/Digital, I2C, ADCs, DACs, and switches.

Features

LTM2884
- 2500V_RMS for 1 Minute isolated USB transceiver
- UL-CSA recognized file #E151738
- 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
- 30kV/μs common-mode transient immunity
- ESD: ±15kV HBM on USB interface pins
- 15mm × 15mm × 5mm surface-mount BGA package
LTM2894
- 7500V_RMS for 1 minute isolated USB transceiver
- UL-CSA recognition pending
- Reinforced insulation
- USB 2.0 full speed and low speed compatible
- Auto-configuration of bus speed
- 4.4V to 36V VBUS and VBUS2 operating range
- 3.3V LDO output supply signal references VLO and VLO2
- 50kV/μs common-mode transient immunity
- ±20kV HBM ESD on USB interface pins
- 1414VPEAK maximum continuous working voltage
- 17.4mm creepage distance
- 22mm × 6.25mm surface mount BGA

LTM2892
- 6-channel logic isolator @ 3500V_RMS for 1 minute
- UL-CSA recognized file #E151738
- 3V to 5.5V supply operation
- No external components required
- SPI/digital (LTM2892-S) or I₂C (LTM2892-I) options
- 50kV/μs high common-mode transient immunity
- High-Speed Operation
  - 10MHz digital isolation
  - 4MHz/8MHz SPI isolation
  - 400kHz I²C isolation
- Operation up to +125°C (H-grade)
- 1.62V to 5.5V logic supplies for flexible digital interfacing
- ±15kV ESD HBM across the isolation barrier
- 850V_PEAKmaximum continuous working voltage
- Low current shutdown mode (<10μA)
- Small (9mm × 6.25mm × 2.91mm) BGA package