Overview
The ADM8710L2ARJZ-RL7 is a low voltage, high accuracy supervisory circuit manufactured by Analog Devices Inc. This device is designed to monitor up to four system supply voltages, making it ideal for multisupply applications. It combines pretrimmed and adjustable input thresholds, offering both space-saving and flexible solutions. The ADM8710 operates over an extended temperature range of −40°C to +85°C and is packaged in a 6-lead SOT-23 package.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Package Type | 6-lead SOT-23 | RJ-6 |
| Operating Temperature Range | −40°C to +85°C | |
| Monitored Input Voltages | IN1, IN2, IN3, IN4 | Adjustable and pretrimmed (1.8V, 3.3V) |
| Internal Reference Voltage | 0.62 V | |
| Reset Timeout Period | 35 ms to 70 ms (typical 50 ms) | |
| Reset Output | Active low, open drain with weak internal pull-up to IN2 | |
| Thermal Resistance (θJA) | 169.5 °C/W |
Key Features
- Monitors up to four system supply voltages with adjustable and pretrimmed thresholds.
- Includes two factory-set voltage threshold options for monitoring 1.8 V and 3.3 V supplies.
- Provides two adjustable thresholds for monitoring voltages down to 0.62 V using an external resistor divider.
- Active low reset output with open drain and a weak internal pull-up to IN2.
- Reset output remains low for the reset timeout period after all monitored voltages rise above the threshold.
- Operates with low power consumption and is compact, making it suitable for space-constrained applications.
Applications
The ADM8710L2ARJZ-RL7 is suitable for a variety of applications that require reliable voltage monitoring and reset functionality, including:
- Multisupply systems where multiple voltage levels need to be monitored.
- Embedded systems and microprocessors that require robust power management.
- Industrial control systems and automation equipment.
- Telecommunication and networking devices.
- Any application requiring high accuracy voltage supervision and reset capabilities.
Q & A
- What is the primary function of the ADM8710L2ARJZ-RL7?
The primary function of the ADM8710L2ARJZ-RL7 is to monitor up to four system supply voltages and assert a reset signal if any of the monitored voltages fall below their respective threshold levels.
- What package type is the ADM8710L2ARJZ-RL7 available in?
The ADM8710L2ARJZ-RL7 is available in a 6-lead SOT-23 package.
- What is the operating temperature range of the ADM8710L2ARJZ-RL7?
The operating temperature range is −40°C to +85°C.
- How are the reset thresholds set for the ADM8710L2ARJZ-RL7?
The device includes two factory-set voltage threshold options and two adjustable thresholds that can be set using an external resistor divider based on a 0.62 V internal reference.
- What is the nature of the reset output of the ADM8710L2ARJZ-RL7?
The reset output is active low and open drain with a weak internal pull-up to IN2.
- How long does the reset output remain low after all voltages rise above the threshold?
The reset output remains low for the reset timeout period, which is typically 50 ms but can range from 35 ms to 70 ms.
- What should be done with unused monitored inputs?
Unused monitored inputs should not be allowed to float or be grounded; instead, they should be connected to a supply voltage greater than their specified threshold voltages.
- What is the thermal resistance (θJA) of the ADM8710L2ARJZ-RL7 in its SOT-23 package?
The thermal resistance (θJA) is 169.5 °C/W.
- In what types of applications is the ADM8710L2ARJZ-RL7 commonly used?
The ADM8710L2ARJZ-RL7 is commonly used in multisupply systems, embedded systems, industrial control systems, telecommunication devices, and any application requiring high accuracy voltage supervision and reset capabilities.
- How is the ADM8710L2ARJZ-RL7 powered?
The device is powered by IN2, which is one of the monitored voltages.
