Overview
The ADuM1200WTRZ35, produced by Analog Devices Inc., is a dual-channel digital isolator that utilizes the company's iCoupler technology. This device is designed to provide high-speed data transfer while maintaining electrical isolation between two circuits. It is particularly useful in applications requiring voltage translation and high common-mode transient immunity. The ADuM1200WTRZ35 is available in an automotive grade version, qualified for operation up to 125°C, making it suitable for a wide range of industrial and automotive applications.
Key Specifications
| Parameter | Value | Unit | Test Conditions |
|---|---|---|---|
| Maximum Current per Channel | 0.8 mA (0 Mbps to 2 Mbps), 2.2 mA (10 Mbps), 4.8 mA (25 Mbps) | mA | At specified data rates |
| Data Rate | dc to 25 Mbps (NRZ) | Mbps | |
| Pulse Width Distortion | < 3 ns | ns | For CR grade |
| Channel-to-Channel Matching | < 3 ns | ns | For CR grade |
| Common-Mode Transient Immunity | >25 kV/μs | kV/μs | |
| Logic High Input Threshold | 0.7 (VDD1 or VDD2) | V | |
| Logic Low Input Threshold | 0.3 (VDD1 or VDD2) | V | |
| Logic High Output Voltages | (VDD1 or VDD2) - 0.1 to 3.0 V | V | IOx = -20 μA, VIx = VIxH |
| Logic Low Output Voltages | 0.0 to 0.1 V | V | IOx = 20 μA, VIx = VIxL |
| Propagation Delay | 3.0 ns (5 V/3 V operation) | ns | |
| Output Rise/Fall Time | 2.5 ns (3 V/5 V operation) | ns |
Key Features
- Bidirectional communication with 3 V/5 V level translation
- High temperature operation up to 125°C
- High data rate: dc to 25 Mbps (NRZ)
- Precise timing characteristics with < 3 ns pulse width distortion and channel-to-channel matching
- High common-mode transient immunity: >25 kV/μs
- Safety and regulatory approvals: UL recognition 2500 V rms for 1 minute per UL 1577, CSA Component Acceptance Notice 5A, VDE Certificate of Conformity DIN V VDE V 0884-10
- Qualified for automotive applications
- Patented refresh feature ensuring dc correctness in the absence of input logic transitions and during power-up/power-down conditions
Applications
- Size-critical multichannel isolation
- SPI interface/data converter isolation
- RS-232/RS-422/RS-485 transceiver isolation
- Digital field bus isolation
- Hybrid electric vehicles, battery monitor, and motor drive
Q & A
- Q: What is the maximum data rate of the ADuM1200WTRZ35?
A: The maximum data rate is up to 25 Mbps (NRZ).
- Q: What is the common-mode transient immunity of the ADuM1200WTRZ35?
A: The common-mode transient immunity is greater than 25 kV/μs.
- Q: What are the logic high and low input thresholds for the ADuM1200WTRZ35?
A: The logic high input threshold is 0.7 (VDD1 or VDD2) and the logic low input threshold is 0.3 (VDD1 or VDD2).
- Q: What is the propagation delay of the ADuM1200WTRZ35?
A: The propagation delay is 3.0 ns for 5 V/3 V operation.
- Q: Is the ADuM1200WTRZ35 qualified for automotive applications?
A: Yes, it is qualified for automotive applications and can operate up to 125°C.
- Q: What safety and regulatory approvals does the ADuM1200WTRZ35 have?
A: It has UL recognition 2500 V rms for 1 minute per UL 1577, CSA Component Acceptance Notice 5A, and VDE Certificate of Conformity DIN V VDE V 0884-10.
- Q: What is the purpose of the patented refresh feature in the ADuM1200WTRZ35?
A: The patented refresh feature ensures dc correctness in the absence of input logic transitions and during power-up/power-down conditions.
- Q: Can the ADuM1200WTRZ35 be used for bidirectional communication?
A: Yes, it supports bidirectional communication with 3 V/5 V level translation.
- Q: What are some typical applications of the ADuM1200WTRZ35?
A: Typical applications include size-critical multichannel isolation, SPI interface/data converter isolation, RS-232/RS-422/RS-485 transceiver isolation, and digital field bus isolation.
- Q: How does the ADuM1200WTRZ35 handle pulse width distortion?
A: It has precise timing characteristics with less than 3 ns pulse width distortion.
