Overview
The ADUM1285CRZ is a dual-channel digital isolator produced by Analog Devices Inc. This component utilizes Analog Devices' iCoupler® technology, which combines high-speed CMOS and monolithic air core transformer technology to provide superior performance characteristics compared to optocouplers and other integrated couplers.
It is designed to offer high-speed data transfer, low propagation delay, and low dynamic power consumption, making it suitable for a variety of applications requiring reliable and efficient digital isolation.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Data Rate | - | - | 100 | Mbps | - | |
| Propagation Delay | - | - | 23 | ns | - | |
| Output Rise/Fall Time | tR/tF | - | 2.5 | ns | 10% to 90% | |
| Quiescent Input Supply Current | IDDI(Q) | 0.4 | 0.75 | mA | - | |
| Quiescent Output Supply Current | IDDO(Q) | 1.6 | 2.0 | mA | - | |
| Dynamic Input Supply Current | IDDI(D) | - | 0.08 | mA/Mbps | - | |
| Dynamic Output Supply Current | IDDO(D) | - | 0.03 | mA/Mbps | - | |
| Common-Mode Transient Immunity | |CM| | 25 | 35 | kV/μs | VIx = VDDx, VCM = 1000 V, transient magnitude = 800 V | |
| Input-to-Output Resistance | RI-O | 1013 | - | Ω | - | |
| Input-to-Output Capacitance | CI-O | 2 | - | pF | f = 1 MHz | |
| Input Capacitance | CI | 4.0 | - | pF | From any input data pin to ground | |
| Junction-to-Ambient Thermal Resistance | θJA | 85 | - | °C/W | Thermocouple located at center of package underside |
Key Features
- Up to 100 Mbps data rate (NRZ)
- Low propagation delay: 23 ns typical
- Low dynamic power consumption
- Bidirectional communication
- 3.3 V to 5 V level translation
- High temperature operation: up to 125°C
- High common-mode transient immunity: >25 kV/μs
- Independent isolation channels with tight channel-to-channel matching
Applications
- Industrial control systems
- Medical devices requiring isolation
- Automotive systems (e.g., CAN, Ethernet)
- Industrial I/O interfaces
- IO-Link applications
- General-purpose digital isolation in various electronic systems
Q & A
- What is the maximum data rate of the ADUM1285CRZ?
The ADUM1285CRZ supports up to 100 Mbps data rate (NRZ).
- What is the typical propagation delay of the ADUM1285CRZ?
The typical propagation delay is 23 ns.
- Does the ADUM1285CRZ support bidirectional communication?
Yes, the ADUM1285CRZ supports bidirectional communication.
- What is the operating temperature range of the ADUM1285CRZ?
The ADUM1285CRZ can operate up to 125°C.
- What is the common-mode transient immunity of the ADUM1285CRZ?
The common-mode transient immunity is greater than 25 kV/μs.
- What is the package type of the ADUM1285CRZ?
The ADUM1285CRZ is available in an 8-pin SOIC package.
- Is the ADUM1285CRZ RoHS compliant?
Yes, the ADUM1285CRZ is RoHS compliant.
- What are the quiescent input and output supply currents of the ADUM1285CRZ?
The quiescent input supply current is 0.4 to 0.75 mA, and the quiescent output supply current is 1.6 to 2.0 mA.
- What are the dynamic input and output supply currents of the ADUM1285CRZ?
The dynamic input supply current is 0.08 mA/Mbps, and the dynamic output supply current is 0.03 mA/Mbps.
- What is the input-to-output resistance of the ADUM1285CRZ?
The input-to-output resistance is 1013 Ω.
