Overview
The ADM12914-2ARQZ, produced by Analog Devices Inc., is a quad voltage supervisory IC designed to monitor multiple voltage rails in a variety of applications. This IC is particularly suited for systems that require precise monitoring of both positive and negative voltage supplies. Each monitored rail has two dedicated input pins, allowing for both undervoltage (UV) and overvoltage (OV) conditions to be detected with high threshold accuracy of ±0.8% over an extended temperature range of −40°C to +125°C.
Key Specifications
| Parameter | Description |
|---|---|
| Package Type | 16-lead QSOP |
| Operating Temperature Range | −40°C to +125°C |
| Threshold Accuracy | ±0.8% |
| Supply Current | 62 µA |
| Reset Output Type | Open-drain UV and OV reset outputs |
| Reset Timeout | Adjustable with disable option |
| Reference Output | 1 V buffered reference output |
| Polarity Configuration | Three-state SEL pin for positive or negative supply monitoring |
| Glitch Immunity | Yes |
Key Features
- Quad undervoltage/overvoltage (UV/OV) positive/negative supervisor
- Supervises up to two negative rails
- Adjustable UV and OV input thresholds
- Industry-leading threshold accuracy of ±0.8% over the extended temperature range
- 1 V buffered reference output for monitoring negative voltages
- Open-drain UV and OV reset outputs
- Adjustable reset timeout with disable option
- Outputs guaranteed down to VCC of 0.9 V
- Glitch immunity
- Internal shunt regulator for use in higher voltage systems
Applications
- Server supply monitoring
- FPGA/DSP core and I/O voltage monitoring
- Telecommunications equipment
- Medical equipment
Q & A
- What is the primary function of the ADM12914-2ARQZ?
The primary function of the ADM12914-2ARQZ is to monitor multiple voltage rails for undervoltage (UV) and overvoltage (OV) conditions.
- What is the threshold accuracy of the ADM12914-2ARQZ?
The threshold accuracy of the ADM12914-2ARQZ is ±0.8% over the extended temperature range.
- What type of package does the ADM12914-2ARQZ come in?
The ADM12914-2ARQZ comes in a 16-lead QSOP package.
- What is the operating temperature range of the ADM12914-2ARQZ?
The operating temperature range of the ADM12914-2ARQZ is −40°C to +125°C.
- Does the ADM12914-2ARQZ have adjustable reset timeout?
Yes, the ADM12914-2ARQZ has an adjustable reset timeout with a disable option.
- What is the purpose of the 1 V buffered reference output?
The 1 V buffered reference output acts as an offset when monitoring negative voltages.
- How does the SEL pin configure the device?
The three-state SEL pin determines the polarity of the third and fourth inputs, configuring the device to monitor either positive or negative supplies.
- What is the supply current of the ADM12914-2ARQZ?
The supply current of the ADM12914-2ARQZ is 62 µA.
- Does the ADM12914-2ARQZ have glitch immunity?
Yes, the ADM12914-2ARQZ has glitch immunity.
- What are some common applications of the ADM12914-2ARQZ?
Common applications include server supply monitoring, FPGA/DSP core and I/O voltage monitoring, telecommunications equipment, and medical equipment.
