Analog Devices ADM1810-10AKS, ADM1810-10AKSZ, ADM1810-10ART, ADM1810-10ARTZ, ADM1810-5AKS Schematic [ru]

ADM1810-ADM1813/ADM1815-ADM1818

FEATURES

Reliable low cost voltage monitor with reset output
Suitable for monitoring 2.5 V, 3 V, 3.3 V, and 5 V power

supply voltages

Reset threshold levels: 4.62 V, 4.35 V, 3.06 V, 2.88 V, 2.55 V,

2.31 V, and 2.18 V typical

Active high and low push-pull output choices: ADM1810,

ADM1812, ADM1815, and ADM1817

Open-drain output choices: ADM1811, ADM1813, ADM1816,

and ADM1818

Can be used with a manual push-button to generate a reset:

ADM1813, ADM1818
Initialization of microprocessor systems with added safety
Available in 3-lead SOT-23 and SC70 packages

APPLICATIONS

Microprocessor systems
Computers
Controllers
Intelligent instruments
Automotive systems

GENERAL DESCRIPTION

The ADM181x range of voltage monitoring circuits is used in
any application where an electronic system needs to be reset
when a voltage increases above or below a predetermined value.

Because of the reset delay time incorporated into the ADM181x
series, these devices provide a safe startup for electronic systems.
Before a system initializes, the power supply must stabilize.
Using the ADM181x series ensures that there are typically 150 ms
for the power supply to stabilize before the system resets and
safe system initialization begins.

The ADM181x series of microprocessor reset circuits are
available in low cost, space-saving SOT-23 and SC70 packages.

Microprocessor Reset Circuits

FUNCTIONAL BLOCK DIAGRAMS

V

CC

TOLERANCE

GND

V

GND

V

GND

V

CC

CC

CC

REFERENCE

TOLERANCE

REFERENCE

TOLERANCE

REFERENCE

TOLERANCE

GND

REFERENCE

ADM1810/ADM1815

V

CC

BIAS

TC

ADM1811/ADM1816

V

CC

BIAS

TC

ADM1812/ADM1817

V

CC

BIAS

TC

ADM1813/ADM1818

V

CC

BIAS

TC

RESET

MONITOR

Figure 1.

150ms

DELAY

150ms

DELAY

150ms

DELAY

150ms

DELAY

5.5kΩ

5.5kΩ

RST

RST

RST

RST

00064-001

Rev. D

Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Anal og Devices for its use, nor for any infringements of patents or ot her
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.
Trademarks and registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] www.analog.com
Fax: [phone] © 2005 Analog Devices, Inc. All rights reserved.

ADM1810-ADM1813/ADM1815-ADM1818

TABLE OF CONTENTS

Features .............................................................................................. 1

Typical Perf or m an c e Charac t e r istics ..............................................6

Applications....................................................................................... 1

General Description......................................................................... 1

Functional Block Diagrams............................................................. 1

Revision History ............................................................................... 2

Specifications..................................................................................... 3

Absolute Maximum Ratings............................................................ 4

ESD Caution.................................................................................. 4

Pin Configurations and Function Descriptions ........................... 5

REVISION HISTORY

10/05—Rev. C to Rev. D

Updated Format.................................................................. Universal

Added Figure 3...................................................................................5

Changes to Table 3.............................................................................5

Updated Outline Dimensions..........................................................8

Changes to Ordering Guide.............................................................9

9/03—REV. B to REV. C.

Added SC70......................................................................... Universal

Edits to SPECIFICATIONS..............................................................2

Edits to ORDERING GUIDE...........................................................4

Updated OUTLINE DIMENSIONS ...............................................7

2/03—REV. A to REV. B.

Edits to FEATURES...........................................................................1

Deleted Table I ...................................................................................1

Edits to SPECIFICATIONS..............................................................2

Theory of Operation ...........................................................................7

Timing Diagrams for All Devices ...............................................7

ADM1813 and ADM1818..............................................................7

ADM1810, ADM1812, ADM1815, and ADM1817.....................7

ADM1811 and ADM1816..............................................................7

Outline Dimensions ..........................................................................8

Ordering Guide .............................................................................9

Edits to ABSOLUTE MAXIMUM RATINGS...............................3

Edits to ORDERING GUIDE ..........................................................3

Added Typical Performance Characteristics .................................4

Edits to ADM1813 AND ADM1818 section.................................5

Edits to ADM1810, ADM1812, ADM1815, AND

ADM1817 section..............................................................................5

Edits to ADM1811 AND ADM1816 section.................................5

Updated OUTLINE DIMENSIONS ...............................................6

3/02—REV. 0 to REV. A.

Addition of Table .............................................................................. 1

Edits to ORDERING GUIDE ..........................................................3

Addition of new text to ADM1813 and ADM1818 section......... 4

Rev. D | Page 2 of 16

ADM1810-ADM1813/ADM1815-ADM1818

SPECIFICATIONS

VCC = full operating range, TA = −40°C to +105°C, unless otherwise noted.

Table 1.

Parameter Min Typ Max Unit Conditions/Note

SUPPLY

Voltage 1 5.5 V TA = 0°C to 105°C

1.2 5.5 V TA = −40°C to +105°C

Current 9 16 μA VCC = 5.5 V, VCC > VTH, no load
4 10 μA VCC = 3.6 V, VCC > VTH, no load
OUTPUT CURRENT

RST

Output Source Current
RST Output Source Current 350 μA VCC ≤ VTH (min), reset asserted (ADM1812/ADM1817)
RST

Output Sink Current

RST Output Sink Current 8 mA

OUTPUT VOLTAGE VCC − 0.5 VCC − 0.1 V

VCC TRIP POINT

ADM1810-5, ADM1811-5, ADM1812-5,

ADM1813-5

ADM1810-10, ADM1811-10, ADM1812-10,

ADM1813-10

ADM1815-5, ADM1816-5, ADM1817-5,

ADM1818-5

ADM1815-10, ADM1816-10,

ADM1817-10, ADM1818-10

ADM1815-20, ADM1816-20,

ADM1817-20, ADM1818-20

ADM1815-R23, ADM1816-R23,

ADM1817-R23, ADM1818-R23

ADM1815-R22, ADM1816-R22,

ADM1817-R22, ADM1818-R22

INTERNAL PULL-UP RESISTOR

ADM1811/ADM1816 3.5 5.5 7.5 kΩ
ADM1813/ADM1818 3.1 5.5 7.5 kΩ

OUTPUT CAPACITANCE 10 pF
RESET ACTIVE TIME 100 150 250 ms
VCC DETECT TO RESET

Falling 10 μs (ADM1810/ADM1811/ADM1812/ADM1813)
10 μs (ADM1815/ADM1816/ADM1817/ADM1818)
Rising 100 150 250 ms tR = 5 μs

PUSH-BUTTON DETECT TO
PUSH-BUTTON RESET 100 150 250 ms (ADM1813/ADM1818)

RST

350 μA VCC ≥ VTH (max), reset not asserted (ADM1810/ADM1815)

8 mA

4.50 4.62 4.75 V

4.25 4.35 4.49 V

2.98 3.06 3.15 V

2.80 2.88 2.97 V

2.47 2.55 2.64 V

2.25 2.31 2.37 V

2.12 2.18 2.25 V

1 μs (ADM1813/ADM1818)

≥ 2.7 V, reset asserted, V

V

CC

(ADM1810/ADM1811/ADM1813/
ADM1815/ADM1816/ADM1818)

≥ 2.7 V, reset not asserted,

V

CC

V

= 0.4 V (ADM1812/ADM1817)

OUT

(ADM1810/ADM1812/ADM1815/ADM1817)
@ 0 μA to 500 μA

= 0.4 V

OUT

Rev. D | Page 3 of 16

ADM1810-ADM1813/ADM1815-ADM1818

ABSOLUTE MAXIMUM RATINGS

TA = 25°C, unless otherwise noted.

Table 2.

Parameter Rating

V

CC

Input Current 20 mA
Operating Temperature Range −40°C to +105°C

θ

Thermal Impedance, SOT-23

JA

θ

Thermal Impedance, SC70

JA

Lead Temperature (Soldering, 10 sec) 300°C

Vapor Phase (60 sec) 215°C
Infrared (15 sec) 220°C

Storage Temperature Range −65°C to +150°C

−0.3 V to +6.0 V

270°C/W
146°C/W

Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those listed in the operational sections
of this specification is not implied. Exposure to absolute
maximum ratings for extended periods of time may affect
device reliability.

ESD CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on
the human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degrada­tion or loss of functionality.

Rev. D | Page 4 of 16

ADM1810-ADM1813/ADM1815-ADM1818

PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS

RST/RST

V

CC

1

ADM181x

TOP VIEW

(Not to Scale)

2

3

GND

00064-002

Figure 2. 3-Lead SOT Pin Configuration

Table 3. Pin Function Descriptions

Pin No.
(SOT)

1 2

Pin No.
(SC70)

Mnemonic Function

RST/RST Reset Output. RST/RST remains active while VCC is below the reset threshold

and remains active for 150 ms typical after VCC rises above the reset threshold.

2 1 V

CC

Supply Voltage Being Monitored.

3 3 GND 0 V Ground Reference for All Signals.

V

1

CC

RST/RST

ADM181x

TOP VIEW

(Not to Scale)

2

3

GND

00064-014

Figure 3. 3-Lead SC70 Pin Configuration

Rev. D | Page 5 of 16

ADM1810-ADM1813/ADM1815-ADM1818

TYPICAL PERFORMANCE CHARACTERISTICS

10

1.011

ICC @VCC = 5.5V

ICC @VCC = 3V

TEMPERATURE (°C)

(μA)

CC

I

8

6

4

2

0

–40 12010085705030200–20

Figure 4. Supply Current vs. Temperature

900

800

700

600

POWER-DOWN RESET DELAY (μs)

500

400

300

200

100

0

–40 12010085705030200–20

VOD = 125mV

TEMPERATURE (°C)

VOD = 20mV

VOD = 200mV

Figure 5. Power-Down Reset Delay vs. Temperature

380

370

360

350

340

330

320

310

POWER-UP RESET TIMEOUT (ms)

300

290

–40 12010085705030200–20

TEMPERATURE (°C)

Figure 6. Power-Up Reset Timeout vs. Temperature

00064-003

00064-004

00064-005

1.009

1.007

1.005

1.003

1.001

0.999

NORMALIZED RESET THRESHOLD

0.997

0.995
–40 12010085705030200–20

DEVIATION (FALL)

DEVIATION (RISE)

TEMPERATURE (°C)

Figure 7. Normalized Reset Threshold vs. Temperature

60

50

s)

μ

40

30

20

MAXIMUM TRANSIENT (

10

0

10 100080060040020010080604030

VTH– VCC (mV)

Figure 8. Maximum Transient Duration Without Causing a Reset Pulse

vs. Reset Comparator Overdrive

00064-006

00064-007

Rev. D | Page 6 of 16