ADM691AARNZ

Name: ADM691AARNZ
Brand: Analog Devices
Rating: 4.5 (10 reviews)

Supervisory Circuits 5V CMOS PROCESS I.C., also known as ADM691AARNZ, offers precise supervision capabilities for CMOS-based devices

Quantity	Unit Price(USD)	Ext. Price
100	$3.355	$335.50
30	$3.408	$102.24
10	$3.522	$35.22
1	$3.602	$3.60

Inventory:9,097

*The price is for reference only.

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Part Number : ADM691AARNZ
Package/Case : SOIC-16
Manufacturer : Analog Devices
Components Classification : Supervisors
Datesheet : ADM691AARNZ DataSheet (PDF)
Series : ADM691A

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Overview of ADM691AARNZ

The ADM691AARNZ is a voltage monitoring device with a watchdog timer and manual reset input. This IC is commonly used in microcontroller-based systems to monitor the power supply and provide reset control.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

VCC: Power Supply Input
GND: Ground
MR: Manual Reset Input
VOUT: Reset Output
TOUT: Watchdog Timer Output
WDI: Watchdog Timer Input

Circuit Diagram

Incorporate a circuit diagram that illustrates the connections and operation of the ADM691AARNZ IC for a more visual representation.

Key Features

Voltage Monitoring: The ADM691AARNZ monitors the power supply voltage and asserts a reset signal if the voltage falls below a specified threshold.
Manual Reset Input: The MR pin allows for an external manual reset input to force a system reset.
Watchdog Timer: This IC includes a watchdog timer to monitor system activity and provide a reset signal if the system freezes or malfunctions.
Adjustable Reset Timeout: The device allows for customization of the reset timeout period to suit specific system requirements.
Power-On Reset Delay: The ADM691AARNZ incorporates a power-on reset delay to ensure stable system operation during power-up.

Note: For detailed technical specifications, please refer to the ADM691AARNZ datasheet.

Application

Microcontroller Systems: The ADM691AARNZ is commonly used in microcontroller-based systems to ensure reliable operation and system integrity through voltage monitoring and reset control.
Embedded Systems: This IC is suitable for use in various embedded systems where voltage monitoring and reset functionality are essential for system stability.
Industrial Control Systems: The ADM691AARNZ is utilized in industrial control applications to provide robust reset control and voltage monitoring.

Functionality

The ADM691AARNZ provides voltage monitoring, watchdog timer functionality, and manual reset input, making it an essential component for ensuring system reliability and integrity in microcontroller-based applications.

Usage Guide

Power Supply: Connect VCC (Pin 1) to the positive power supply and GND (Pin 2) to ground.
Manual Reset: The MR pin can be connected to an external push-button for manual reset functionality.
Voltage Monitoring: The VOUT pin provides a reset signal when the monitored voltage falls below the specified threshold.
Watchdog Timer: Connect the WDI (Pin 5) to the microcontroller's watchdog output and monitor the TOUT (Pin 4) for the watchdog timer status.

Frequently Asked Questions

Q: What is the purpose of the watchdog timer in the ADM691AARNZ?
A: The watchdog timer monitors system activity and provides a reset signal if the system freezes or malfunctions, ensuring continuous operation.

Q: Can the reset timeout period be adjusted in the ADM691AARNZ?
A: Yes, the reset timeout period can be adjusted to suit specific system requirements, providing flexibility in reset control.

Equivalent

For similar functionalities, consider these alternatives to the ADM691AARNZ:

MAX691A: A voltage monitoring device with a watchdog timer and manual reset input, offering comparable functionality to the ADM691AARNZ.
TC54: This is a voltage monitor with a manual reset input, suitable for applications requiring voltage monitoring and reset functionality.
DS1813: A micropower voltage monitor with manual reset, providing voltage monitoring and reset capabilities for low-power applications.

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Product Category	Supervisory Circuits	RoHS	Details
Type	Voltage Supervisory	Mounting Style	SMD/SMT
Package / Case	SOIC-16	Threshold Voltage	4.65 V
Number of Inputs Monitored	1 Input	Output Type	Open Drain
Manual Reset	No Manual Reset	Watchdog Timers	Watchdog
Battery Backup Switching	Backup	Reset Delay Time	200 ms
Supply Voltage - Max	5.5 V	Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 85 C	Series	ADM691A
Brand	Analog Devices	Chip Enable Signals	Chip Enable
Height	1.5 mm (Max)	Length	10 mm (Max)
Operating Supply Current	100 uA	Overvoltage Threshold	4.75 V
Pd - Power Dissipation	700 mW	Power Fail Detection	Yes
Product Type	Supervisory Circuits	Factory Pack Quantity	48
Subcategory	PMIC - Power Management ICs	Supply Voltage - Min	4.75 V
Undervoltage Threshold	4.5 V	Width	4 mm (Max)
Unit Weight	0.023634 oz

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