ADM810JART AD [Analog Devices], ADM810JART Datasheet

ADM810JART

Manufacturer Part Number

ADM810JART

Description

Microprocessor Supervisory Circuit in 3-Pin SOT-23

Manufacturer

AD [Analog Devices]

Datasheet

1.ADM810JART.pdf (6 pages)

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GENERAL DESCRIPTION

The ADM809/ADM810 supervisory circuits monitor the

power supply voltage in microprocessor systems. They pro-

vide a reset output during power-up, power-down and

brownout conditions. On power-up, an internal timer holds

reset asserted for 240 ms. This holds the microprocessor in a

reset state until conditions have stabilized. The RESET

output remains operational with V

ADM809 provides an active low reset signal (RESET) while

the ADM810 provides an active high signal (RESET) output.

Six reset threshold voltage options are available suitable for

monitoring a variety of supply voltages. Refer to Table I.

The reset comparator features built-in glitch immunity,

making it immune to fast transients on V

The ADM809/ADM810 consumes only 17 A, making it

suitable for low power portable equipment. It is packaged in

a 3-pin SOT-23 package.

REV. 0

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

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

FEATURES

Superior Upgrade for MAX809/MAX810

Specified Over Temperature

Low Power Consumption (17 A)

Precision Voltage Monitor: +3 V, +3.3 V, +5 V Options

Reset Assertion Down to 1 V V

140 ms min Power-On Reset

APPLICATIONS

Microprocessor Systems

Computers

Controllers

Intelligent Instruments

Automotive Systems

Logic Low RESET Output (ADM809)

Logic High RESET Output (ADM810)

as low as 1 V. The

Supervisory Circuit in 3-Pin SOT-23

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 617/329-4700

Fax: 617/326-8703

Figure 1. Typical Operating Circuit

FUNCTIONAL BLOCK DIAGRAM

REF

ADM809/ADM810

ADM809

World Wide Web Site: http://www.analog.com

GND

ADM809/ADM810

RESET

GND

GENERATOR

Microprocessor

RESET

240ms

RESET

INPUT

SYSTEM

GND

RESET

(RESET)

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ADM810JART Summary of contents

Page 1

FEATURES Superior Upgrade for MAX809/MAX810 Specified Over Temperature Low Power Consumption (17 A) Precision Voltage Monitor +3 Options Reset Assertion Down 140 ms min Power-On Reset Logic Low RESET Output ...

Page 2

ADM809/ADM810–SPECIFICATIONS Parameter V Operating Voltage Range CC Supply Current RESET THRESHOLD Reset Voltage Threshold ADM8_L ADM8_L ADM8_L ADM8_M ADM8_M ADM8_M ADM8_ J ADM8_ J ADM8_ J ADM8_T ADM8_T ADM8_T ADM8_S ADM8_S ADM8_S ADM8_R ADM8_R ADM8_R Reset Threshold Temperature Coefficient V ...

Page 3

... RESET VOLTAGE THRESHOLD Figure 2. Power Fail Reset Timing Table I. Reset Threshold Options RESET Model Threshold ADM809LART 4.63 V ADM809MART 4.38 V ADM809JART 4.00 V ADM809TART 3.08 V ADM809SART 2.93 V ADM809RART 2.63 V ADM810LART 4.63 V ADM810MART 4.38 V ADM810JART 4.00 V ADM810TART 3.08 V ADM810SART 2.93 V ADM810RART 2.63 V Brand Information Quantity 9LXX 10K 9LXX 3K 9MXX 10K 9MXX 3K 9JXX 10K 9JXX 3K 9TXX ...

Page 4

ADM809/ADM810 —Typical Performance Characteristics –40 – TEMPERATURE – C Figure 3. Supply Current vs. Tem- ...

Page 5

INTERFACING TO OTHER DEVICES The ADM809/ADM810 Series is designed to integrate with as many devices as possible and therefore has a standard output dependant This enables the part to be used in both and ...

Page 6

ADM809/ADM810 0.0550 (1.397) 0.0470 (1.194) 0.0236 (0.599) 0.0177 (0.450) 0.0040 (0.102) 0.0005 (0.013) OUTLINE DIMENSIONS Dimensions shown in inches and (mm). Surface Mount Package RT-3 0.1200 (3.048) 0.1102 (2.799) 3 0.1040 (2.642) 0.0827 (2.101 PIN 1 0.0413 (1.049) ...

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