Overview
The ADM809-5LARTZ-RL7 is a microprocessor supervisory circuit produced by Analog Devices Inc. This component is designed to monitor the power supply voltage in microprocessor systems, ensuring stable operation during power-up, power-down, and brownout conditions. It provides a reset output to hold the microprocessor in a reset state until the power supply voltage has stabilized.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| RESET Threshold Voltage | 4.63 V | TA = −40°C to +85°C |
| RESET Threshold Voltage | 4.40 V to 4.86 V | TA = 85°C to 150°C |
| Supply Current | 17 μA to 60 μA | VCC < 5.5 V, TA = −40°C to +150°C |
| RESET Output Voltage Low | 0.3 V | VCC = VTH min, ISINK = 1.2 mA |
| RESET Output Voltage High | 0.8 VCC V | VCC > VTH max, ISOURCE = 500 μA |
| Operating Temperature Range | −40°C to +150°C | |
| Package Type | 3-Lead SOT-23 | |
| VCC to RESET Delay | 20 μs | VCC = VTH to (VTH − 100 mV) |
| RESET Active Timeout Period | 55 ms (typical) |
Key Features
- Low power consumption: 17 μA
- Precision voltage monitor with options for 3 V and 5 V
- Reset assertion down to 1 V VCC
- Logic low RESET output with push-pull configuration
- Available in SOT-23 and SC70 packages
- Built-in glitch immunity to fast transients on VCC
- Internal timer holds reset asserted for 55 ms during power-up
Applications
- Microprocessor systems
- Computers and controllers
- Intelligent instruments
- Automotive systems
Q & A
- What is the primary function of the ADM809-5LARTZ-RL7?
The primary function is to monitor the power supply voltage in microprocessor systems and provide a reset output during power-up, power-down, and brownout conditions.
- What are the available reset threshold voltage options for the ADM809-5L?
The ADM809-5L has a reset threshold voltage of 4.63 V.
- How much current does the ADM809-5LARTZ-RL7 consume?
The component consumes 17 μA to 60 μA of supply current.
- What is the operating temperature range of the ADM809-5LARTZ-RL7?
The operating temperature range is −40°C to +150°C.
- What type of package is the ADM809-5LARTZ-RL7 available in?
The component is available in a 3-Lead SOT-23 package.
- Does the ADM809-5LARTZ-RL7 have built-in glitch immunity?
Yes, it has built-in glitch immunity to fast transients on VCC.
- How long does the internal timer hold the reset asserted during power-up?
The internal timer holds the reset asserted for 55 ms during power-up.
- What is the minimum VCC voltage at which the RESET output remains operational?
The RESET output remains operational with VCC as low as 1 V.
- Is the ADM809-5LARTZ-RL7 RoHS compliant?
Yes, the component is RoHS compliant.
- What are some typical applications of the ADM809-5LARTZ-RL7?
Typical applications include microprocessor systems, computers, controllers, intelligent instruments, and automotive systems.
