Overview
The ADM825TYRJZ-R7 is a supervisory circuit produced by Analog Devices Inc., designed to monitor power supply voltage levels and ensure code execution integrity in microprocessor-based systems. This component is part of the ADM823/ADM824/ADM825 family and is particularly useful in applications requiring reliable power monitoring and reset functions.
Key Specifications
| Parameter | Value |
|---|---|
| VCC Operating Voltage Range | 1.2 V to 5.5 V (TA = 0°C to 70°C) |
| Reset Threshold Voltage | 3.08 V (TA = 25°C), 3.00 V to 3.15 V (TA = TMIN to TMAX) |
| Supply Current | 10 µA to 24 µA (WDI and MR unconnected) |
| Operating Temperature Range | −40°C to +125°C |
| Storage Temperature Range | −65°C to +150°C |
| Package Type | 5-Lead SOT-23 |
| Thermal Impedance (θJA) | 270°C/W |
| Reset Timeout | 140 ms Minimum |
| Reset Output | Active High/Active Low, Push-Pull |
| MR Input Pulse Width | 1 µs |
| MR Glitch Rejection | 100 ns |
| MR Pull-Up Resistance | 35 kΩ to 75 kΩ |
Key Features
- Monitors power supply voltage levels to ensure system reliability.
- Manual reset input (MR) with internal pull-up resistance.
- Watchdog timer to monitor code execution integrity.
- Active high/active low reset output with push-pull configuration.
- Cable drop compensation to maintain accurate voltage monitoring.
- Low supply current to minimize power consumption.
- Wide operating temperature range for various environmental conditions.
Applications
- Microprocessor-based systems requiring power supply monitoring.
- Embedded systems that need reliable reset functions.
- Industrial control systems where robust power management is crucial.
- Automotive and aerospace applications due to its wide temperature range and reliability.
- Medical devices and other critical systems that require precise voltage monitoring.
Q & A
- What is the primary function of the ADM825TYRJZ-R7? The primary function is to monitor power supply voltage levels and ensure code execution integrity in microprocessor-based systems.
- What is the reset threshold voltage for the ADM825TYRJZ-R7? The reset threshold voltage is 3.08 V at 25°C, with a range of 3.00 V to 3.15 V over the operating temperature range.
- What is the operating temperature range of the ADM825TYRJZ-R7? The operating temperature range is −40°C to +125°C.
- What type of package does the ADM825TYRJZ-R7 come in? It comes in a 5-Lead SOT-23 package.
- What is the minimum reset timeout period for the ADM825TYRJZ-R7? The minimum reset timeout period is 140 ms.
- Does the ADM825TYRJZ-R7 have a manual reset input? Yes, it features a manual reset input (MR) with an internal pull-up resistance.
- What is the purpose of the watchdog timer in the ADM825TYRJZ-R7? The watchdog timer monitors code execution integrity to ensure the system operates correctly.
- Is the ADM825TYRJZ-R7 RoHS compliant? Yes, the ADM825TYRJZ-R7 is RoHS compliant.
- What is the thermal impedance (θJA) of the ADM825TYRJZ-R7 in its SOT-23 package? The thermal impedance (θJA) is 270°C/W.
- What are some common applications for the ADM825TYRJZ-R7? Common applications include microprocessor-based systems, embedded systems, industrial control systems, automotive and aerospace systems, and medical devices.
