Overview
The ADUM1200BR-RL7 is a dual-channel digital isolator produced by Analog Devices Inc. This component utilizes the iCoupler technology, which combines high-speed CMOS and monolithic transformer technologies to provide superior performance characteristics compared to traditional optocouplers. The ADUM1200BR-RL7 is designed to eliminate the design difficulties associated with optocouplers, such as uncertain current transfer ratios, nonlinear transfer functions, and temperature and lifetime effects. It operates with supply voltages ranging from 2.7 V to 5.5 V on both sides, enabling voltage translation across the isolation barrier and compatibility with lower voltage systems.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Input Supply Current per Channel (Quiescent) | IDDI (Q) | 0.26 | 0.35 | mA | 2.7 V ≤ VDD1 ≤ 3.6 V, 2.7 V ≤ VDD2 ≤ 3.6 V | |
| Output Supply Current per Channel (Quiescent) | IDDO (Q) | 0.11 | 0.20 | mA | 2.7 V ≤ VDD1 ≤ 3.6 V, 2.7 V ≤ VDD2 ≤ 3.6 V | |
| Total Supply Current, Two Channels (DC to 2 Mbps) | IDD1 (Q) | 0.6 | 1.0 | mA | DC to 1 MHz logic signal freq. | |
| Maximum Data Rate | 10 Mbps | CL = 15 pF, CMOS signal levels | ||||
| Propagation Delay | tPHL, tPLH | 20 | 55 ns | CL = 15 pF, CMOS signal levels | ||
| Pulse Width Distortion | |tPLH − tPHL| | 3 ns | CL = 15 pF, CMOS signal levels | |||
| Common-Mode Transient Immunity | |CMH|, |CML| | 25 | 35 kV/μs | VIx = VDD1 or VDD2, VCM = 1000 V, transient magnitude = 800 V | ||
| Output Rise/Fall Time (10% to 90%) | tR/tF | 3.0 ns | CL = 15 pF, CMOS signal levels |
Key Features
- High-Speed Data Transfer: Supports data rates up to 25 Mbps (NRZ)
- Voltage Translation: Operates with supply voltages ranging from 2.7 V to 5.5 V on both sides, enabling voltage translation across the isolation barrier
- Low Power Consumption: Consumes significantly less power compared to optocouplers, especially at higher data rates
- Precise Timing Characteristics: Offers low pulse width distortion and tight channel-to-channel matching
- High Common-Mode Transient Immunity: Provides immunity to common-mode transients greater than 25 kV/μs
- High Temperature Operation: Qualified for operation up to 125°C, particularly in automotive and industrial applications
- Safety and Regulatory Approvals: Meets UL recognition, CSA Component Acceptance Notice, and VDE Certificate of Conformity standards
Applications
- Size-Critical Multichannel Isolation: Ideal for applications where space is limited and multiple isolation channels are required
- SPI Interface/Data Converter Isolation: Used in SPI interfaces and data converter applications to ensure signal integrity and isolation
- RS-232/RS-422/RS-485 Transceiver Isolation: Suitable for isolating serial communication interfaces
- Digital Field Bus Isolation: Applied in various field bus systems to ensure reliable and isolated data transmission
- Hybrid Electric Vehicles, Battery Monitor, and Motor Drive: Qualified for automotive applications, including battery monitoring and motor drive systems
Q & A
- What is the maximum data rate supported by the ADUM1200BR-RL7?
The ADUM1200BR-RL7 supports a maximum data rate of 10 Mbps
- What is the typical propagation delay of the ADUM1200BR-RL7?
The typical propagation delay is between 20 ns and 55 ns
- What is the common-mode transient immunity of the ADUM1200BR-RL7?
The common-mode transient immunity is greater than 25 kV/μs
- Can the ADUM1200BR-RL7 operate at high temperatures?
Yes, it is qualified for operation up to 125°C
- What are the supply voltage ranges for the ADUM1200BR-RL7?
The supply voltages range from 2.7 V to 5.5 V on both sides
- Does the ADUM1200BR-RL7 support voltage translation?
Yes, it supports voltage translation across the isolation barrier
- What are some of the key applications of the ADUM1200BR-RL7?
Key applications include size-critical multichannel isolation, SPI interface/data converter isolation, RS-232/RS-422/RS-485 transceiver isolation, and digital field bus isolation
- Is the ADUM1200BR-RL7 suitable for automotive applications?
Yes, it is qualified for automotive applications, including battery monitoring and motor drive systems
- What safety and regulatory approvals does the ADUM1200BR-RL7 meet?
It meets UL recognition, CSA Component Acceptance Notice, and VDE Certificate of Conformity standards
- How does the ADUM1200BR-RL7 compare to traditional optocouplers in terms of power consumption?
The ADUM1200BR-RL7 consumes significantly less power compared to optocouplers, especially at higher data rates
