Overview
The ISO7310CDR from Texas Instruments is a robust, low-power, single-channel digital isolator designed to provide galvanic isolation between two circuits. This device is part of the ISO7310x family and is particularly suited for applications requiring high electromagnetic compatibility (EMC) and low power consumption. The ISO7310CDR operates using a capacitive isolation barrier, ensuring reliable data transmission across isolated power supplies without compromising the integrity of the signals.
It is available in a narrow body SOIC-8 package, making it compact and suitable for a variety of industrial and automotive applications. The device supports data rates up to 25 Mbps and operates over a wide temperature range from -40°C to 125°C, enhancing its reliability in harsh environments.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC1, VCC2) | -0.5 | 6 | V | |
| Input Voltage (IN) | -0.5 | VCC+0.5 | V | |
| Output Current (IO) | ±15 | mA | ||
| Junction Temperature (TJ) | 150 | °C | ||
| Storage Temperature (Tstg) | -65 | 150 | °C | |
| Isolation Voltage | 3000 VRMS / 4242 VPK | |||
| Signaling Rate | 25 | Mbps | ||
| Propagation Delay (Typical) | 32 | ns | ||
| Power Consumption (Typical at 1 Mbps, 5V) | 1.9 | mA | ||
| Power Consumption (Typical at 25 Mbps, 5V) | 3.8 | mA |
Key Features
- Galvanic Isolation: Up to 3000 VRMS and 4242 VPK, ensuring robust isolation between circuits.
- Low Power Consumption: Typical current consumption of 1.9 mA at 1 Mbps and 3.8 mA at 25 Mbps with 5V supplies.
- High Data Rate: Supports data rates up to 25 Mbps.
- Wide Operating Temperature Range: Specified from -40°C to 125°C.
- Integrated Noise Filter: Built-in noise filters to handle short noise pulses in harsh industrial environments.
- Robust EMC: Enhanced electromagnetic compatibility with system-level ESD, EFT, and surge immunity.
- Level Translation: Operates from 3.3V and 5V supplies, enabling level translation between different voltage domains.
- Fail-Safe Output: Default output 'High' and 'Low' options available.
- Safety and Regulatory Approvals: Compliant with various safety standards including UL 1577, DIN V VDE V 0884-10, and IEC 61010-1.
Applications
- Industrial FieldBus: Suitable for ProfiBus, ModBus, and DeviceNet data buses.
- Servo Control Interface: Used in servo control systems for precise signal isolation.
- Motor Control: Applied in motor control systems to ensure reliable and isolated signal transmission.
- Power Supplies: Used in isolated power supply designs to prevent noise and interference.
- Battery Packs: Utilized in battery pack management systems for isolated communication.
Q & A
- What is the maximum isolation voltage of the ISO7310CDR?
The ISO7310CDR provides galvanic isolation up to 3000 VRMS and 4242 VPK.
- What are the typical power consumption values for the ISO7310CDR?
Typical power consumption is 1.9 mA at 1 Mbps and 3.8 mA at 25 Mbps with 5V supplies.
- What is the maximum data rate supported by the ISO7310CDR?
The device supports data rates up to 25 Mbps.
- What is the operating temperature range of the ISO7310CDR?
The device operates over a temperature range from -40°C to 125°C.
- Does the ISO7310CDR have built-in noise filters?
Yes, the device has integrated noise filters to handle short noise pulses in harsh industrial environments.
- What are the safety and regulatory approvals for the ISO7310CDR?
The device is compliant with various safety standards including UL 1577, DIN V VDE V 0884-10, and IEC 61010-1.
- Can the ISO7310CDR be used for level translation between different voltage domains?
Yes, the device operates from 3.3V and 5V supplies, enabling level translation.
- What is the typical propagation delay of the ISO7310CDR?
The typical propagation delay is 32 ns.
- Does the ISO7310CDR have fail-safe output options?
Yes, the device has default output 'High' and 'Low' options available.
- In what types of applications is the ISO7310CDR commonly used?
The device is commonly used in industrial FieldBus, servo control interfaces, motor control systems, power supplies, and battery pack management systems.
