Overview
The ISO7220MDR is a dual-channel digital isolator produced by Texas Instruments. This device is part of the ISO7220x and ISO7221x family, designed to provide galvanic isolation of up to 4000VPK per VDE. It features a silicon-dioxide (SiO2) isolation barrier, which separates the logic input and output buffers, thereby blocking high voltage and isolating grounds. This isolation prevents noise currents from interfering with or damaging sensitive circuitry. The device is particularly useful in applications requiring high-speed data transfer and robust isolation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC (D) | - |
| Pins | 8 | - |
| Operating Temperature Range | -40 to 125 | °C |
| Signaling Rate Options | 1, 5, 25, 150 Mbps | 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 Voltages | 2.8V (C-Grade), 3.3V, 5V | V |
| ESD Protection | 4 kV | V |
| Electromagnetic Immunity | High | - |
| Isolation Voltage | 2500 VRMS | V |
| Lifetime at Rated Voltage | Typical 28 Years | Years |
Key Features
- 1, 5, 25, and 150 Mbps signaling rate options
- Low channel-to-channel output skew; 1 ns Max
- Low pulse-width distortion (PWD); 1 ns Max
- Low jitter content; 1 ns Typ at 150 Mbps
- 50 kV/μs typical transient immunity
- Operates with 2.8V (C-Grade), 3.3V, or 5V supplies
- 4 kV ESD protection
- High electromagnetic immunity
- –40°C to +125°C operating range
- Typical 28-year life at rated voltage
- Safety-related certifications including DIN EN IEC 60747-17, UL 1577, IEC 62368-1, IEC 61010-1, and IEC 60601-1
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 ISO7220MDR?
The ISO7220MDR is a dual-channel digital isolator that provides galvanic isolation between the input and output buffers, blocking high voltage and isolating grounds to prevent noise interference.
- What are the available signaling rate options for the ISO7220MDR?
The device supports signaling rates of 1, 5, 25, and 150 Mbps.
- What is the operating temperature range of the ISO7220MDR?
The device operates over a temperature range of –40°C to +125°C.
- What are the supply voltage options for the ISO7220MDR?
The device can operate with supply voltages of 2.8V (C-Grade), 3.3V, or 5V.
- What is the isolation voltage of the ISO7220MDR?
The device provides an isolation voltage of up to 2500 VRMS.
- Does the ISO7220MDR have ESD protection?
Yes, the device has 4 kV ESD protection.
- What are some common applications of the ISO7220MDR?
Common applications include factory automation, computer peripheral interfaces, servo control interfaces, and data acquisition.
- What safety certifications does the ISO7220MDR have?
The device has certifications such as DIN EN IEC 60747-17, UL 1577, IEC 62368-1, IEC 61010-1, and IEC 60601-1.
- What is the typical lifetime of the ISO7220MDR at rated voltage?
The device has a typical lifetime of 28 years at rated voltage.
- What is the package type and pin count of the ISO7220MDR?
The device comes in an 8-pin SOIC (D) package.
