Features and Benefits
- High common-mode transient immunity: 100 kV/µs
- High robustness to radiated and conducted noise
- Low propagation delay: 13 ns maximum for 5 V operation, 15 ns maximum for 1.8 V operation
- 150 Mbps maximum data rate
- Low dynamic power consumption
- 1.8 V to 5 V level translation
- High temperature operation: 125°C
- Failsafe high or low options
- 8-lead, RoHS-compliant, SOIC package
- See data sheet for additional features
The ADuM120N/ADuM121N are dual-channel digital isolators based on Analog Devices, Inc., iCoupler® technology. Combining high speed, complementary metal-oxide semiconductor (CMOS) and monolithic air core transformer technology, these isolation components provide outstanding performance characteristics superior to alternatives such as optocoupler devices and other integrated couplers. The maximum propagation delay is 13 ns with a pulse width distortion of less than 3 ns at 5 V operation. Channel matching is tight at 3.0 ns maximum.
The ADuM120N/ADuM121N data channels are independent and are available in a variety of configurations with a withstand voltage rating of 3 kV rms (see the Ordering Guide). The devices operate with the supply voltage on either side ranging from 1.8 V to 5 V, providing compatibility with lower voltage systems as well as enabling voltage translation functionality across the isolation barrier.
Unlike other optocoupler alternatives, dc correctness is ensured in the absence of input logic transitions. Two different fail-safe options are available in which the outputs transition to a predetermined state when the input power supply is not applied or the inputs are disabled.
The ADuM120N0 is pin-compatible with the ADuM1285, and the ADuM120N1 is pin-compatible with the ADuM1280 and the ADuM1200. The ADuM121N0 is pin-compatible with ADuM1286, and the ADuM121N0 is pin-compatible with the ADuM1281 and the ADuM1201.
- General-purpose multichannel isolation
- Industrial field bus isolation
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 (1)
The EVAL-1CH2CHSOICEBZ supports single and dual channel standard data isolators in 8 lead SOIC packages. The evaluation board provides a JEDEC standard 8-lead SOIC_N and SOIC_W pad layout. This supports signal distribution, loopback, and loads referenced to VDDx or GNDx, as well as optimal bypass capacitance. Signal sources can conducted to the board through header pins or through edge-mounted SMA connectors (not supplied with board). Terminal blocks provide for power connections. The board includes 200 mil header positions for compatibility with Tektronix active probes (not supplied with board).
The board follows best printed circuit board (PCB) design practices for 4-layer boards, including a full power and ground plane on each side of the isolation barrier. No other EMI or noise mitigation design features are included on this board. In cases of very high speed operation or when ultralow emissions are required, refer to the AN-1109 application note for additional board layout techniques.
Features & Benefits
- Access to all 2 data channels
- Multiple connection options
- Support for Tektronix active probes
- Provision for cable terminations
- Support for PCB edge-mounted coaxial connectors
- Easy configuration
- Sample iCoupler digital isolator must be ordered separately:
Supported iCoupler Models
ADuM110N0BRZ / ADuM110N1BRZ
ADuM120N0BRZ / ADuM120N1BRZ
ADuM121N0BRZ / ADuM121N1BRZ
ADuM210N0BRIZ / ADuM210N1BRIZ
ADuM225N0BRIZ / ADuM225N1BRIZ
ADuM226N0BRIZ / ADuM226N1BRIZ
ADuM7240ARZ / ADuM7240CRZ
ADuM7241ARZ / ADuM7241CRZ
ADuM1200AR / ADuM1200ARZ
ADuM1200BR / ADuM1200BRZ
ADuM1200CR / ADuM1200CRZ
ADuM1200WSRZ / ADuM1200WTRZ
ADuM1201AR / ADuM1201ARZ
ADuM1201BR / ADuM1201BRZ
ADuM1201CR / ADuM1201CRZ
ADuM3200ARZ / ADuM3200BRZ
ADuM3200CRZ / ADuM3200WARZ
ADuM3200WBRZ / ADuM3200WCRZ
ADuM3201ARZ / ADuM3201BRZ
ADuM3201CRZ / ADuM3201WARZ
ADuM3201WBRZ / ADuM3201WCRZ
ADuM3210ARZ / ADuM3210BRZ
ADuM3210TRZ / ADuM3210WARZ
ADuM3210WBRZ / ADuM3210WCRZ
ADuM3211ARZ / ADuM3211BRZ
ADuM3211WBRZ / ADuM3211WCRZ
ADuM1280ARZ / ADuM1280BRZ
ADuM1280CRZ / ADuM1280WARZ
ADuM1280WBRZ / ADuM1280WCRZ
ADuM1281ARZ / ADuM1281BRZ
ADuM1281CRZ / ADuM1281WARZ
ADuM1281WBRZ / ADuM1281WCRZ
Tools & Simulations
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.
Sample & Buy
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.