Overview
The ADM13305-18ARZ-RL7, produced by Analog Devices Inc., is a dual voltage supervisor designed to monitor two independent voltage supplies and provide reset signals to DSP and microprocessor-based systems. This component is part of the ADM13305 series, which offers various models with different voltage threshold options. The ADM13305-18ARZ-RL7 specifically monitors 1.8V and 3.3V supplies, making it suitable for a wide range of applications including industrial, portable, wireless systems, and notebook/desktop computers.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Operating Voltage Range, VDD | 2.7 | 5.5 | V | ||
| Supply Current, IDD | 40 | μA | |||
| Input Capacitance, CI | 10 | pF | VI = 0 V to VDD | ||
| High Level Output Voltage, VOH | VDD - 0.2 | VDD - 0.4 | VDD - 0.4 | V | IOH = -20 μA, VDD = 3.3 V; IOH = -2 mA, VDD = 3.3 V; IOH = -3 mA, VDD = 5.5 V |
| Low Level Output Voltage, VOL | 0.2 | 0.4 | 0.4 | V | IOL = 20 μA; IOL = 2 mA, VDD = 3.3 V; IOL = 3 mA, VDD = 5.5 V |
| Falling Threshold Voltage, VIT− | 1.64 | 1.68 | 1.72 | V | TA = 0°C to 85°C (for 1.8V threshold) |
| Watchdog Timeout (tt(OUT)) | 1.1 | 1.6 | 2.3 | sec | VI(SENSEv) ≥ VIT+ + 0.2 V, MR ≥ 0.7 × VDD |
| Operating Temperature Range | -40 | 85 | °C | ||
| Package Type | 8-Lead SOIC_N (R-8) |
Key Features
- Dual voltage supervisor capable of monitoring two independent voltage supplies.
- Internally pretrimmed undervoltage threshold options for 1.8V, 2.5V, 3.3V, and 5V supplies.
- Adjustable input option with an undervoltage threshold voltage of 0.6V via an external resistor divider.
- Both active high and active low RESET outputs.
- On-chip watchdog timer to reset the microprocessor if it fails to strobe within the preset timeout period.
- Manual reset input pin for external push-button reset.
- Operating temperature range of -40°C to +85°C.
- 8-lead, narrow body SOIC package.
Applications
- Supervising DSPs and microcontrollers.
- Industrial and portable equipment.
- Wireless systems.
- Notebook and desktop computers.
Q & A
- What is the primary function of the ADM13305-18ARZ-RL7?
The primary function is to monitor two independent voltage supplies and provide reset signals to DSP and microprocessor-based systems.
- What are the voltage threshold options for the ADM13305-18ARZ-RL7?
The ADM13305-18ARZ-RL7 monitors 1.8V and 3.3V supplies.
- Does the ADM13305-18ARZ-RL7 have an adjustable voltage threshold option?
No, the ADM13305-18ARZ-RL7 has fixed thresholds. However, other models in the series offer adjustable options.
- What type of package does the ADM13305-18ARZ-RL7 come in?
The component is available in an 8-lead, narrow body SOIC package.
- What is the operating temperature range of the ADM13305-18ARZ-RL7?
The operating temperature range is -40°C to +85°C.
- Does the ADM13305-18ARZ-RL7 have a watchdog timer?
Yes, it features an on-chip watchdog timer to reset the microprocessor if it fails to strobe within the preset timeout period.
- Can the reset signal be asserted manually?
Yes, a reset signal can be asserted by an external push button through the manual reset input pin.
- What are the typical supply current and input capacitance values?
The typical supply current is 40 μA, and the input capacitance is 10 pF.
- What are the high and low level output voltage specifications?
The high level output voltage (VOH) is VDD - 0.2 V to VDD - 0.4 V, and the low level output voltage (VOL) is 0.2 V to 0.4 V, depending on the current conditions.
- Is the ADM13305-18ARZ-RL7 RoHS compliant?
Yes, the component is RoHS compliant.
