Overview
The LTC2914CGN-1#PBF is a quad input voltage monitor produced by Analog Devices Inc. This device is designed to monitor multiple voltages in various applications, offering a versatile and precise solution for voltage monitoring. It features dual inputs for each monitored voltage, allowing it to detect both undervoltage (UV) and overvoltage (OV) conditions. The LTC2914 is particularly useful in systems that require the monitoring of multiple power supply voltages, such as in desktop and notebook computers, network servers, and other complex electronic systems.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Voltages Monitored | 4 |
| Operating Temperature Range | 0°C to 70°C (LTC2914C), -40°C to 85°C (LTC2914I), -40°C to 125°C (LTC2914H) |
| Supply Voltage Range | 2.3V to 6V |
| Threshold Accuracy | 1.5% of monitored voltage over temperature |
| Quiescent Current | 62µA |
| Reset Type | Active Low |
| Package Types | 16-Lead SSOP, 16-Lead (5mm × 3mm) DFN |
| Input Polarity | Positive and negative voltage monitoring |
| Buffered Reference Output | 1V, sources and sinks up to 1mA |
Key Features
- Monitors four separate undervoltage and overvoltage conditions with dual inputs for each monitored voltage.
- Adjustable UV and OV trip values using external resistors.
- Input glitch rejection for reliable reset operation.
- Buffered 1V reference output for negative voltage monitoring applications.
- Adjustable reset timeout period using an external capacitor, with timeout disable functionality.
- Open-drain OV and UV outputs with weak pull-up to VCC.
- Polarity selection via a three-state input pin without requiring external components.
- Latching capability for overvoltage output (LTC2914-1) and functionality to disable both OV and UV outputs (LTC2914-2).
Applications
- Desktop and notebook computers.
- Network servers.
- Core and I/O voltage monitors in various electronic systems.
- Power supply monitoring in complex electronic devices.
Q & A
- What is the primary function of the LTC2914CGN-1#PBF?
The primary function is to monitor multiple voltages for undervoltage and overvoltage conditions. - How many voltages can the LTC2914 monitor simultaneously?
The LTC2914 can monitor four voltages simultaneously. - What is the operating temperature range for the LTC2914C?
The operating temperature range for the LTC2914C is 0°C to 70°C. - Can the LTC2914 monitor negative voltages?
Yes, the LTC2914 can monitor up to two separate negative voltages. - What is the quiescent current of the LTC2914?
The quiescent current is 62µA. - How is the reset timeout period adjusted?
The reset timeout period is adjusted using an external capacitor attached to the TMR pin. - What types of packages are available for the LTC2914?
The LTC2914 is available in 16-Lead SSOP and 16-Lead (5mm × 3mm) DFN packages. - Does the LTC2914 have latching capability?
Yes, the LTC2914-1 has latching capability for the overvoltage output. - Can the OV and UV outputs be disabled?
Yes, the LTC2914-2 allows disabling both the overvoltage and undervoltage outputs. - What is the purpose of the buffered 1V reference output?
The buffered 1V reference output is used for the offset in negative-monitoring applications and can source and sink up to 1mA.
