Overview
The ADM2914-2ARQZ-RL7, produced by Analog Devices Inc., is a quad voltage supervisory IC designed to monitor multiple voltage rails in various applications. This device is particularly suited for systems that require precise monitoring of both positive and negative voltage supplies. It features adjustable undervoltage (UV) and overvoltage (OV) input thresholds, ensuring high threshold accuracy over a wide temperature range.
The ADM2914-2ARQZ-RL7 operates over an extended temperature range of −40°C to +125°C and is packaged in a 16-lead QSOP (Shrink Small Outline Package).
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Temperature Range | −40°C to +125°C | °C |
| Supply Voltage Range | 2.3 V to 7 V | V |
| Maximum Supply Voltage | 6.9 V | V |
| Reset Type | Active-Low, Open-Drain | |
| Number of Supervisors/Monitors | 4 | |
| Threshold Voltage Accuracy | ±1.5% | % |
| Supply Current | 62 μA | μA |
| Package Type | 16-Lead QSOP | |
| RoHS Compliance | Yes |
Key Features
- Quad UV/OV positive/negative voltage supervisor, allowing each rail to be monitored for both undervoltage and overvoltage conditions.
- Adjustable UV and OV input thresholds.
- High threshold accuracy over temperature: ±1.5%.
- 1 V buffered reference output for offset when monitoring negative voltages.
- Open-drain UV and OV reset outputs.
- Adjustable reset timeout with disable option (ADM2914-2 model).
- Internal shunt regulator for use in higher voltage systems.
- Glitch immunity and low supply current of 62 μA.
- Three-state SEL pin to configure the device for positive or negative supplies.
Applications
- Server supply monitoring.
- FPGA/DSP core and I/O voltage monitoring.
- Telecommunications equipment.
- Medical equipment.
Q & A
- What is the operating temperature range of the ADM2914-2ARQZ-RL7?
The operating temperature range is −40°C to +125°C.
- What is the supply voltage range for this device?
The supply voltage range is from 2.3 V to 7 V.
- How many voltage rails can the ADM2914-2ARQZ-RL7 monitor?
The device can monitor up to four voltage rails.
- What is the accuracy of the threshold voltage?
The threshold voltage accuracy is ±1.5% over temperature.
- What type of reset output does the ADM2914-2ARQZ-RL7 have?
The device has active-low, open-drain reset outputs.
- Can the reset timeout be adjusted?
Yes, the reset timeout can be adjusted, and there is also a disable option available in the ADM2914-2 model.
- What is the purpose of the internal shunt regulator?
The internal shunt regulator allows the device to be used in higher voltage systems by regulating VCC if the supply line exceeds the absolute maximum ratings.
- What is the typical supply current of the ADM2914-2ARQZ-RL7?
The typical supply current is 62 μA.
- In what package is the ADM2914-2ARQZ-RL7 available?
The device is available in a 16-lead QSOP package.
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Yes, the device is RoHS compliant.
