产品概览
The ADUM1311ARWZ-RL from Analog Devices is a triple-channel digital isolator using iCoupler technology with up to 1 Mbps data rate (A grade). It provides 2500 Vrms isolation with 25 kV/us common-mode transient immunity in a 16-lead wide-body SOIC package. The 1311 configuration provides 2 forward and 1 reverse channel, supporting bidirectional communication with programmable default output states.
主要规格
| 类型 | Triple-Channel Digital Isolator (iCoupler) |
| 渠道 | 3 (2 forward, 1 reverse) |
| 数据速率 | 1 Mbps (A grade), 10 Mbps (B grade) |
| 隔离电压 | 2500 Vrms (UL 1577) |
| CMTI | >25 kV/us |
| 电源电压 | 2.7V – 5.5V (either side) |
| 传播延迟 | 100 ns max (A grade at 5V) |
| 脉冲宽度失真 | 40 ns max (A grade) |
| Iq per Channel | 1.7 mA max at 5V (0-2 Mbps) |
| Default Output | Programmable (high or low) |
| Creepage | 8.1 mm (external) |
| 包装 | SOIC-16W (wide body) |
| Operating Temp | -40 to 105 C |
| Safety | UL 1577, VDE 0884-17, CSA, IEC 62368-1 |
特点
- iCoupler magnetic isolation eliminates LED aging and CTR degradation of optocouplers
- Triple-channel: 2 forward + 1 reverse for bidirectional SPI communication
- 1 Mbps data rate with 100 ns max propagation delay (A grade)
- 2500 Vrms isolation rated per UL 1577 with 8.1 mm creepage
- >25 kV/us common-mode transient immunity
- 2.7V to 5.5V supply on either side enables level translation across barrier
- Programmable default output state when input power is absent
- Patented refresh circuit ensures DC correctness during power-up/down
应用
- SPI 接口和数据转换器隔离
- RS-232/RS-422/RS-485 transceiver isolation
- Industrial field bus isolation (CAN, PROFIBUS)
- Medical equipment isolation per IEC 60601-1
- Power supply feedback loop isolation