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| Device type: Communication device | |
| Operating temperature range (°C): -40 to 125 | |
| Baud rate: 2.5Mbps（Max） | |
| Idle Current: 3.6μA | |
| Package: MSOP-16L, QFN3x3-16L |
| EMS3010MS | MSOP-16L | MSOP package;16 pin 4mm x 3mm; 1.1mm (Max) height |
| EMS3010U | DQFN3x3-16L | QFN3x3 package;17 pin 3mm x 3mm; 0.8mm (Max) height |
- 2.5Mbps（Max） EMiso (isolated daisy chain) Data Communications
- Simple Galvanic Isolation Using Standard Transformers
- Bidirectional Interface Over a Single Twisted Pair
- Supports Cable Lengths Up to 100 Meters
- Very Low EMI Susceptibility and Emissions
- Configurable for High Noise Immunity or Low Power
- Requires No Software Changes in Most SPI Systems
- Ultralow, 3.6μA Idle Current
- Automatic Wake-Up Detection
- Operating Temperature Range: –40°C to 125°C
- 2.9V to 5.5V Power Supply
- Interfaces to All Logic from 1.7V to 5.5V
- Available in 16-Lead QFN and MSOP Packages
The EMS3010 provides bidirectional SPI communications between two isolated devices through a single twisted-pair connection. Each EMS3010 encodes logic states into signals that are transmitted across an isolation barrier to another EMS3010. The receiving EMS3010 decodes the transmission and drives the slave bus to the appropriate logic states. The isolation barrier can be bridged by a simple pulse transformer to achieve hundreds of volts of isolation.
The EMS3010 drives differential signals using matched source and sink currents, eliminating the requirement for a transformer center tap and reducing EMI. Precision window comparators in the receiver detect the differential signals. The drive currents and the comparator thresholds are set by a simple external resistor divider, allowing the system to be optimized for required cable lengths and desired signal-to-noise performance.