Overview
The ADM13305-4ARZ is a dual voltage supervisor IC designed and manufactured by Analog Devices Inc. This device is specifically engineered to monitor two independent voltage supplies and provide reset signals to DSP and microprocessor-based systems. It features a combination of internally pretrimmed undervoltage threshold options and an adjustable input option, making it versatile for various applications. The ADM13305-4ARZ operates over an extended industrial temperature range of −40°C to +85°C and is packaged in an 8-lead, narrow body SOIC package.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Operating Voltage Range, VDD | 2.7 | 5.5 | V | ||
| Supply Current, IDD | 40 | μA | VDD = 2.7 V to 5.5 V | ||
| Input Capacitance, CI | 10 | pF | VI = 0 V to VDD | ||
| Watchdog Timeout (tt(OUT)) | 1.1 | 1.6 | 2.3 | sec | VI(SENSEv) ≥ VIT+ + 0.2 V, MR ≥ 0.7 × VDD |
| Delay Time (td) | 140 | 200 | 280 | ms | VI(SENSEv) ≥ VIT+ + 0.2 V, MR ≥ 0.7 × VDD |
| Propagation Delay, High-to-Low, MR to RESET/RESET1 (tPHL) | 200 | 500 | ns | VI(SENSEv) ≥ VIT+ + 0.2 V, VIH ≥ 0.7 × VDD, VIL ≥ 0.3 × VDD | |
| Propagation Delay, Low-to-High, MR to RESET/RESET1 (tPLH) | 200 | 500 | ns | VI(SENSEv) ≥ VIT+ + 0.2 V, VIH ≥ 0.7 × VDD, VIL ≥ 0.3 × VDD |
Key Features
- Dual voltage supervisor capable of monitoring two independent voltage supplies.
- Internally pretrimmed undervoltage threshold options for 1.8 V, 2.5 V, 3.3 V, and 5 V supplies, with an adjustable input option.
- Active high and active low RESET outputs with push-pull configuration.
- 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 capability.
- Operating temperature range of −40°C to +85°C.
- 8-lead, narrow body SOIC package.
Applications
- Supervising DSPs/microcontrollers in various systems.
- Industrial and portable equipment.
- Wireless systems.
- Notebook and desktop computers.
Q & A
- What is the primary function of the ADM13305-4ARZ?
The primary function of the ADM13305-4ARZ is to monitor two independent voltage supplies and provide reset signals to DSP and microprocessor-based systems.
- What are the available undervoltage threshold options for the ADM13305-4ARZ?
The device offers internally pretrimmed undervoltage threshold options for 1.8 V, 2.5 V, 3.3 V, and 5 V supplies, as well as an adjustable input option.
- What type of package does the ADM13305-4ARZ come in?
The ADM13305-4ARZ is packaged in an 8-lead, narrow body SOIC package.
- What is the operating temperature range of the ADM13305-4ARZ?
The operating temperature range is −40°C to +85°C.
- Does the ADM13305-4ARZ have a watchdog timer?
Yes, the device includes an on-chip watchdog timer to reset the microprocessor if it fails to strobe within the preset timeout period.
- Can the ADM13305-4ARZ be reset manually?
Yes, the device has a manual reset input pin for external push-button reset capability.
- What are the typical applications of the ADM13305-4ARZ?
Typical applications include supervising DSPs/microcontrollers, industrial and portable equipment, wireless systems, and notebook/desktop computers.
- What is the supply current of the ADM13305-4ARZ?
The supply current (IDD) is typically 40 μA.
- What are the propagation delays for the reset signals?
The propagation delays for high-to-low and low-to-high transitions are typically 200 ns to 500 ns.
- How does the watchdog timeout work?
The watchdog timeout (tt(OUT)) ranges from 1.1 to 2.3 seconds, depending on the conditions, and resets the microprocessor if it fails to strobe within this period.
