Overview
The AD8214ARMZ, produced by Analog Devices Inc., is a fast response, high voltage current shunt comparator designed for high-side DC current sensing applications. This device operates within a voltage range of 5 V to 65 V, making it suitable for various automotive and industrial applications. The AD8214 features an internal 2.4 V series voltage regulator and a fast comparator optimized for high-side operation, enabling quick detection of overcurrent conditions. The device is packaged in an 8-lead MSOP and is fully qualified for automotive use, with an operating temperature range of −40°C to +125°C.
Key Specifications
| Parameter | Value |
|---|---|
| Package | MSOP-8 |
| Number of Channels | 1 Channel |
| Common Mode Voltage (Vcm) | 5 V to 65 V |
| Common Mode Rejection Ratio (CMRR) | 80 dB |
| Input-to-Output Response Time | < 100 ns |
| Operating Temperature Range | −40°C to +125°C |
| Internal Regulator Voltage | 2.4 V |
| Comparator Input Offset Voltage | Typically 1 mV |
Key Features
- Fast response time of less than 100 ns, ideal for overcurrent protection and fast shutdown of control loops.
- High common-mode voltage range of 5 V to 65 V, suitable for high-side DC current sensing.
- Internal 2.4 V series voltage regulator for stable operation and setting comparator threshold voltage.
- Built-in comparator hysteresis to prevent oscillations and ensure stable output states.
- Compact 8-lead MSOP package.
- Full qualification for automotive applications.
Applications
- Overcurrent protection in motor and solenoid control systems.
- Automotive applications such as transmission controls, diesel injection controls, and battery management.
- DC-to-DC converters and power supplies.
- High-side current sensing in various industrial and automotive systems.
Q & A
- What is the primary function of the AD8214ARMZ?
The AD8214ARMZ is a high voltage current shunt comparator designed for detecting overcurrent conditions in high-side DC current sensing applications. - What is the operating voltage range of the AD8214ARMZ?
The device operates within a voltage range of 5 V to 65 V. - What is the response time of the AD8214ARMZ?
The input-to-output response time is typically less than 100 ns. - What type of package does the AD8214ARMZ come in?
The AD8214ARMZ is packaged in an 8-lead MSOP. - What is the operating temperature range of the AD8214ARMZ?
The operating temperature range is −40°C to +125°C. - Is the AD8214ARMZ qualified for automotive applications?
Yes, the AD8214ARMZ is fully qualified for automotive applications. - What is the purpose of the internal 2.4 V regulator in the AD8214ARMZ?
The internal 2.4 V regulator provides a stable voltage for the internal electronics and sets the comparator threshold voltage. - How does the comparator hysteresis in the AD8214ARMZ work?
The built-in comparator hysteresis ensures that once the current falls back to a normal limit, the output changes states to its original level, preventing oscillations. - What are some common applications of the AD8214ARMZ?
Common applications include overcurrent protection in motor and solenoid control, automotive systems, DC-to-DC converters, and power supplies. - What is the typical input offset voltage of the AD8214ARMZ comparator?
The typical input offset voltage is 1 mV.
