Overview
The ADuM1200AR is a dual-channel digital isolator produced by Analog Devices Inc., utilizing the company's proprietary iCoupler technology. This device is designed to provide high-speed, low-latency isolation for digital signals, making it suitable for a variety of applications that require reliable and precise signal transmission across different voltage domains. The ADuM1200AR supports bidirectional communication, voltage translation between 3V and 5V levels, and operates at high temperatures up to 125°C, making it versatile for use in diverse environments.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|
| Input Supply Current per Channel (Quiescent) | 0.26 | 0.35 | 0.50 | mA | 3 V/5 V Operation |
| Output Supply Current per Channel (Quiescent) | 0.11 | 0.20 | 0.25 | mA | 3 V/5 V Operation |
| Maximum Data Rate | 1 Mbps (AR Grade), 10 Mbps (BR and CR Grades) | CL = 15 pF, CMOS signal levels | |||
| Propagation Delay | 50 | 150 ns | CL = 15 pF, CMOS signal levels | ||
| Pulse Width Distortion | 40 ns | CL = 15 pF, CMOS signal levels | |||
| Output Rise/Fall Time (10% to 90%) | 10 ns | CL = 15 pF, CMOS signal levels | |||
| Logic High Input Threshold | 0.7 (VDD1 or VDD2) | V | |||
| Logic Low Input Threshold | 0.3 (VDD1 or VDD2) | V |
Key Features
- Bidirectional communication with 3 V/5 V level translation
- High data rate: dc to 25 Mbps (NRZ)
- Precise timing characteristics: 3 ns maximum pulse width distortion and 3 ns maximum 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
- Automotive grade versions qualified for 125°C operation
- 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
- What is the ADuM1200AR used for?
The ADuM1200AR is used for high-speed digital signal isolation, particularly in applications requiring voltage translation and precise timing characteristics. - What are the maximum data rates supported by the ADuM1200AR?
The ADuM1200AR supports maximum data rates of 1 Mbps for the AR grade and up to 10 Mbps for the BR and CR grades. - What is the operating temperature range of the ADuM1200AR?
The ADuM1200AR operates at temperatures up to 125°C, making it suitable for high-temperature environments. - Does the ADuM1200AR have any safety and regulatory approvals?
Yes, it has UL recognition 2500 V rms for 1 minute per UL 1577, CSA Component Acceptance Notice 5A, and VDE Certificate of Conformity. - What are some common applications of the ADuM1200AR?
Common applications include size-critical multichannel isolation, SPI interface/data converter isolation, RS-232/RS-422/RS-485 transceiver isolation, and digital field bus isolation. - How does the ADuM1200AR handle dc correctness during power-up/power-down conditions?
The ADuM1200AR features a patented refresh mechanism that ensures dc correctness in the absence of input logic transitions and during power-up/power-down conditions. - What is the typical input supply current per channel for the ADuM1200AR?
The typical input supply current per channel is 0.35 mA for 3 V/5 V operation. - Does the ADuM1200AR support bidirectional communication?
Yes, the ADuM1200AR supports bidirectional communication with 3 V/5 V level translation. - What is the pulse width distortion of the ADuM1200AR?
The pulse width distortion is less than 40 ns. - Is the ADuM1200AR qualified for automotive applications?
Yes, the ADuM1200AR has automotive grade versions qualified for 125°C operation.
