Overview
The ADUM3470ARSZ-RL7, produced by Analog Devices Inc., is a high-performance digital isolator that integrates an isolated PWM controller, a transformer driver, and a regulated adjustable output power supply. This component is designed to provide reliable and efficient isolated power and data transfer in various applications. It utilizes Analog Devices' iCoupler® technology to ensure high-speed digital isolation and robust performance.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|---|
| Isolated Output Voltage | VISO | 3.0 | 3.3 | 3.6 | V | IISO = 0 mA, VISO = VFB × (R1 + R2)/R2 |
| Feedback Voltage Setpoint | VFB | 1.125 | 1.25 | 1.375 | V | IISO = 0 mA |
| Output Power | 2 W | At 5.0 V input | ||||
| Efficiency | 70% | At guaranteed load of 400 mA at 5.0 V output | ||||
| Switching Frequency | fSW | 200 kHz | 1 MHz | Adjustable oscillator frequency | ||
| Logic High Input Threshold | VIH | 2.0 V | ||||
| Logic Low Input Threshold | VIL | 0.8 V | ||||
| Maximum Output Supply Current | IISO (MAX) | 400 mA | VISO = 5.0 V | |||
| Operating Temperature | TA | 25°C | 105°C |
Key Features
- Integrated isolated PWM controller and transformer driver
- Regulated adjustable output: 3.3 V to 24 V
- Up to 2 W of isolated power output
- 70% efficiency at guaranteed load of 400 mA at 5.0 V output
- Quad dc-to-25 Mbps (NRZ) signal isolation channels
- High common-mode transient immunity: >25 kV/µs
- Adjustable oscillator frequency: 200 kHz to 1 MHz
- Soft start function at power-up and pulse-by-pulse overcurrent protection
- Thermal shutdown for overtemperature protection
- 20-lead SSOP package
Applications
- RS-232/RS-422/RS-485 transceivers
- Automotive interfaces (CAN, Audio, Ethernet)
- Industrial I/O and control systems
- Broadband switches and controllers
- IO-Link and other industrial communication protocols
- Medical and healthcare devices requiring high isolation
- Automotive and industrial safety systems
Q & A
- What is the primary function of the ADUM3470ARSZ-RL7?
The ADUM3470ARSZ-RL7 is a digital isolator that integrates an isolated PWM controller, a transformer driver, and a regulated adjustable output power supply, providing isolated power and data transfer. - What is the output voltage range of the ADUM3470ARSZ-RL7?
The output voltage is adjustable from 3.3 V to 24 V. - What is the maximum output power of the ADUM3470ARSZ-RL7?
The maximum output power is up to 2 W. - What is the efficiency of the ADUM3470ARSZ-RL7 at maximum load?
The efficiency is 70% at a guaranteed load of 400 mA at 5.0 V output. - What is the switching frequency range of the ADUM3470ARSZ-RL7?
The switching frequency is adjustable from 200 kHz to 1 MHz. - What is the common-mode transient immunity of the ADUM3470ARSZ-RL7?
The common-mode transient immunity is greater than 25 kV/µs. - What are the safety and regulatory approvals for the ADUM3470ARSZ-RL7?
The component has UL recognition for 2500 V rms for 1 minute per UL 1577, CSA Component Acceptance Notice #5A, and VDE certificate of conformity DIN V VDE V 0884-10:2006-12 with VIORM = 560 V peak. - What package type is the ADUM3470ARSZ-RL7 available in?
The component is available in a 20-lead SSOP package. - What are some typical applications of the ADUM3470ARSZ-RL7?
Typical applications include RS-232/RS-422/RS-485 transceivers, automotive interfaces, industrial I/O, and medical devices requiring high isolation. - What is the operating temperature range of the ADUM3470ARSZ-RL7?
The operating temperature range is up to 105°C.
