Overview
The ISO7220MDG4 is a dual-channel digital isolator produced by Texas Instruments. This component is part of the ISO7220x and ISO7221x family of devices, designed to provide galvanic isolation between logic input and output buffers. The device features a silicon-dioxide (SiO2) isolation barrier, which ensures high voltage isolation of up to 4000VPK per VDE. This makes it ideal for applications requiring isolation of grounds and prevention of noise currents from interfering with sensitive circuitry.
Key Specifications
| Specification | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Operating Temperature Range | -40°C to 125°C |
| Signaling Rate Options | 1, 5, 25, and 150Mbps |
| Channel-to-Channel Output Skew | 1ns Max |
| Pulse-Width Distortion (PWD) | 1ns Max |
| Jitter Content | 1ns Typ at 150Mbps |
| Transient Immunity | 50kV/µs Typical |
| Supply Voltages | 2.8V (C-Grade), 3.3V, or 5V |
| ESD Protection | 4kV |
| Electromagnetic Immunity | High |
Key Features
- Low channel-to-channel output skew and pulse-width distortion, ensuring precise signal transmission.
- Low jitter content, particularly at high signaling rates up to 150Mbps.
- High transient immunity of 50kV/µs, providing robust protection against transient voltages.
- Operates with multiple supply voltages (2.8V, 3.3V, or 5V), making it versatile for various system designs.
- 4kV ESD protection to safeguard against electrostatic discharge.
- High electromagnetic immunity, ensuring reliable operation in noisy environments.
- TTL and CMOS input thresholds available, depending on the device option (A, B, C, or M).
- Failsafe circuitry that drives the output to a logic high state if the input is unpowered or not actively driven.
Applications
- Industrial control systems where isolation between control and field devices is crucial.
- Medical devices requiring high isolation to ensure patient safety.
- Automotive systems where noise and voltage isolation are essential.
- Telecommunications and data communication systems needing high-speed data transfer with isolation.
- Any application requiring galvanic isolation to prevent ground loops and noise interference.
Q & A
- What is the primary function of the ISO7220MDG4?
The ISO7220MDG4 is a dual-channel digital isolator that provides galvanic isolation between logic input and output buffers.
- What are the signaling rate options for the ISO7220MDG4?
The signaling rate options include 1, 5, 25, and 150Mbps.
- What is the operating temperature range of the ISO7220MDG4?
The operating temperature range is -40°C to 125°C.
- What types of supply voltages can the ISO7220MDG4 operate with?
The device can operate with 2.8V (C-Grade), 3.3V, or 5V supply voltages.
- What level of ESD protection does the ISO7220MDG4 offer?
The ISO7220MDG4 offers 4kV ESD protection.
- What is the significance of the failsafe circuitry in the ISO7220MDG4?
The failsafe circuitry drives the output to a logic high state if the input is unpowered or not actively driven.
- What are some common applications for the ISO7220MDG4?
Common applications include industrial control systems, medical devices, automotive systems, and telecommunications.
- What is the package type of the ISO7220MDG4?
The package type is SOIC-8.
- What is the isolation voltage rating of the ISO7220MDG4?
The isolation voltage rating is up to 4000VPK per VDE.
- Does the ISO7220MDG4 have high electromagnetic immunity?
