Overview
The ADuM1400ARW, produced by Analog Devices Inc., is a quad-channel digital isolator based on Analog Devices' iCoupler® technology. This component combines high-speed CMOS and monolithic air core transformer technology to provide superior performance characteristics compared to traditional optocoupler devices. By eliminating the use of LEDs and photodiodes, the ADuM1400ARW avoids common design difficulties associated with optocouplers, such as uncertain current transfer ratios, nonlinear transfer functions, and temperature and lifetime effects. This results in stable performance and reduced power consumption, with iCoupler devices using one-tenth to one-sixth the power of optocouplers at comparable signal data rates.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|
| Input Supply Current per Channel, Quiescent (IDDI(Q)) | 0.50 | 0.53 | - | mA | 5 V/3 V Operation |
| Output Supply Current per Channel, Quiescent (IDDO(Q)) | 0.11 | 0.14 | - | mA | 5 V/3 V Operation |
| Total Supply Current, Four Channels (IDD1(Q), IDD2(Q)) | 2.2 | 2.8 | - | mA | 5 V/3 V Operation, DC to 1 MHz logic signal freq. |
| Minimum Pulse Width (PW) | 1000 | - | - | ns | CL = 15 pF, CMOS signal levels |
| Maximum Data Rate | - | - | 1 Mbps | - | CL = 15 pF, CMOS signal levels |
| Propagation Delay (tPHL, tPLH) | 50 | 75 | 100 | ns | CL = 15 pF, CMOS signal levels |
| Pulse Width Distortion (PWD) | - | - | 40 | ns | CL = 15 pF, CMOS signal levels |
| Change vs. Temperature | - | - | 11 ps/°C | - | CL = 15 pF, CMOS signal levels |
| Propagation Delay Skew (tPSK) | - | - | 50 | ns | CL = 15 pF, CMOS signal levels |
| Channel-to-Channel Matching (tPSKCD/tPSKOD) | - | - | 50 | ns | CL = 15 pF, CMOS signal levels |
| Operating Temperature Range | -40°C | - | 105°C | - | - |
| Package Description | - | - | - | - | 16-Lead SOIC_W |
Key Features
- High-Speed CMOS and Monolithic Air Core Transformer Technology: Provides superior performance compared to optocoupler devices.
- Low Power Operation: Consumes one-tenth to one-sixth the power of optocouplers at comparable signal data rates.
- Stable Performance Characteristics: Eliminates concerns regarding uncertain current transfer ratios, nonlinear transfer functions, and temperature and lifetime effects.
- No External Drivers Required: Simplifies design by eliminating the need for external drivers and discrete components.
- Voltage Translation Capability: Operates with supply voltages ranging from 2.7 V to 5.5 V, enabling voltage translation across the isolation barrier.
- Low Pulse Width Distortion and Tight Channel-to-Channel Matching: Ensures high accuracy and reliability in signal transmission.
- Patented Refresh Feature: Ensures dc correctness in the absence of input logic transitions and when power is not applied to one of the supplies.
Applications
- Industrial Control Systems: Suitable for use in industrial control systems where high-speed data isolation is required.
- Automotive Systems: Qualified for automotive applications, including those requiring high reliability and low power consumption.
- Medical Devices: Can be used in medical devices where isolation is critical for safety and performance.
- Power Supplies and DC-DC Converters: Useful in power supply and DC-DC converter designs to ensure isolation between different voltage domains.
- Communication Systems: Applicable in communication systems that require high-speed data isolation to prevent noise and interference.
Q & A
- What is the ADuM1400ARW?
The ADuM1400ARW is a quad-channel digital isolator produced by Analog Devices Inc., based on iCoupler technology.
- What are the key advantages of the ADuM1400ARW over optocouplers?
The ADuM1400ARW offers stable performance characteristics, low power consumption, and eliminates the need for external drivers and discrete components, avoiding common issues associated with optocouplers such as uncertain current transfer ratios and nonlinear transfer functions.
- What is the maximum data rate of the ADuM1400ARW?
The maximum data rate of the ADuM1400ARW is 1 Mbps for the ARW grade and up to 90 Mbps for the CRW grade.
- What is the operating temperature range of the ADuM1400ARW?
The operating temperature range of the ADuM1400ARW is from -40°C to 105°C.
- What package type is the ADuM1400ARW available in?
The ADuM1400ARW is available in a 16-Lead SOIC_W package.
- Does the ADuM1400ARW support voltage translation?
Yes, the ADuM1400ARW operates with supply voltages ranging from 2.7 V to 5.5 V, enabling voltage translation across the isolation barrier.
- What is the power consumption of the ADuM1400ARW?
The ADuM1400ARW consumes significantly less power than optocouplers, with quiescent supply currents as low as 0.50 mA per channel.
- Is the ADuM1400ARW qualified for automotive applications?
Yes, the ADuM1400ARW is qualified for automotive applications.
- What is the propagation delay of the ADuM1400ARW?
The propagation delay of the ADuM1400ARW ranges from 50 ns to 100 ns depending on the grade and conditions.
- Does the ADuM1400ARW have any special features for ensuring dc correctness?
Yes, the ADuM1400ARW has a patented refresh feature that ensures dc correctness in the absence of input logic transitions and when power is not applied to one of the supplies.
