Overview
The ISO7220CDR is a dual-channel digital isolator from Texas Instruments, part of the ISO7220x and ISO7221x family. These devices provide galvanic isolation between the input and output logic signals, using TI’s silicon-dioxide (SiO2) isolation barrier. This barrier ensures up to 4000VPK of isolation voltage, making the device suitable for applications requiring high voltage and ground isolation. The ISO7220CDR operates with supply voltages of 3.3V or 5V and supports signaling rates from 0Mbps to 150Mbps, making it versatile for various high-speed data transmission needs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Signaling Rate Options | 1, 5, 25, 150 Mbps | |
| Channel-to-Channel Output Skew | 1 ns Max | ns |
| Pulse-Width Distortion (PWD) | 1 ns Max | ns |
| Jitter Content | 1 ns Typ at 150 Mbps | ns |
| Transient Immunity | 50 kV/μs Typ | kV/μs |
| Supply Voltage | 3.3V, 5V | V |
| Operating Temperature Range | –40°C to +125°C | °C |
| ESD Protection | ±4000 V (HBM), ±1000 V (CDM) | V |
| Isolation Voltage | 4000 VPK | VPK |
| Package Type | SOIC-8 | |
| Body Size | 4.90mm × 3.91mm | mm |
Key Features
- High-speed signaling rates up to 150 Mbps with low jitter and pulse-width distortion.
- Galvanic isolation with up to 4000VPK isolation voltage.
- Operates with 3.3V or 5V supply voltages and is 5V tolerant on inputs.
- High electromagnetic immunity and 4kV ESD protection.
- Failsafe output circuitry to ensure output state in case of input power loss.
- Compliance with various safety certifications including DIN EN IEC 60747-17, UL 1577, and IEC 62368-1.
Applications
- Factory Automation: Modbus, Profibus™, DeviceNet™ data buses.
- Computer Peripheral Interface.
- Servo Control Interface.
- Data Acquisition.
Q & A
- What is the primary function of the ISO7220CDR?
The ISO7220CDR is a dual-channel digital isolator that provides galvanic isolation between input and output logic signals.
- What are the available signaling rate options for the ISO7220CDR?
The signaling rate options include 1, 5, 25, and 150 Mbps.
- What is the maximum isolation voltage of the ISO7220CDR?
The maximum isolation voltage is up to 4000VPK.
- What are the supported supply voltages for the ISO7220CDR?
The device operates with 3.3V or 5V supply voltages.
- What is the operating temperature range of the ISO7220CDR?
The operating temperature range is from –40°C to +125°C.
- Does the ISO7220CDR have ESD protection?
- What safety certifications does the ISO7220CDR comply with?
- What is the package type of the ISO7220CDR?
The package type is SOIC-8.
- What are some common applications of the ISO7220CDR?
- How does the failsafe output circuitry work in the ISO7220CDR?
The failsafe output circuitry ensures that the output is driven to a logic high state if the input power is lost or not actively driven.
