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ADM6315XXD4

Open-Drain Microprocessor Supervisory Circuit in 4-Lead SOT-143

Analog Devices 

Open-Drain Microprocessor

Supervisory Circuit in 4-Lead SOT-143

ADM6315

FEATURES

Specified over temperature

Low power consumption (5 μA typical)

Precision voltage monitor of voltages from 2.5 V to 5 V

at 100 mV increments

Reset assertion down to VCC > 1 V

Reset timeout periods: 1 ms, 20 ms, 140 ms,

or 1120 ms (minimum)

Built-in manual reset

Pin compatible with the ADM811

Available in SOT-143 package

APPLICATIONS

Microprocessor systems

Controllers

Intelligent instruments

Automotive systems

Safety systems

Portable instruments

GENERAL DESCRIPTION

The ADM6315 is a reliable voltage-monitoring device that is

suitable for use in most voltage-monitoring applications.

The ADM6315 is designed to monitor as little as a 1.8%

degradation of a power supply voltage. The ADM6315 can

monitor all voltages (at 100 mV increments) from 2.5 V to 5 V.

Included in this circuit is a debounced manual reset input.

RESET can be activated using an ordinary switch (pulling MR

low), a low input from another digital device, or a degradation

of the supply voltage.

FUNCTIONAL BLOCK DIAGRAM

GND

ADM6315

VREF

VCC

RESET

RESET

CIRCUITRY

DEBOUNCE

MR

Figure 1.

VCC

ADM6315

MR

RESET

GND

10kΩ

SYSTEM POWER

MICROPROCESSOR

SYSTEM

RESET

GND

Figure 2. Typical Operating Circuit

The manual reset function is very useful, especially if the circuit

in which the ADM6315 is operating enters into a state that can

be detected only by the user. Allowing the user to reset a system

manually can reduce the damage or danger that could otherwise

be caused by an out-of-control or locked-up system.

The ADM6315 is available in a cost- and space-efficient

SOT-143 package.

Rev. E

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

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