ANALOG DEVICES ADM6326 Service Manual

VOLTAGE MONITORING

AND SEQUENCING

A NA L O G D E VI C E S A P P L IC AT I O N S B U L L ET I N 2009/2010

C o n t e n t s

Simple Reset/Power-On Reset . . . . . . 2

Watchdog Supervisory Circuits

Multivoltage Monitors. . . . . . . . . . . . 4

ADM12914 and ADM2914
Quad UV/OV Positive/Negative

Voltage Supervisors . . . . . . . . . . . . . . 5

ADM1184 and ADM1185:
±0.8% Accuracy Quad Voltage

Monitor and Sequencer. . . . . . . . . . . 6

ADM1186: Quad Channel
Up and Down Power Supply

Sequencers and Monitors . . . . . . . . 7

ADM1062 to ADM1069: Highest
Accuracy Super Sequencer Devices

with Margining Control . . . . . . . . . . . 8

Microprocessor Supervisory

Cross References . . . . . . . . . . . . . . . 9

Selection Tables

Supervisory—Simple Reset/
Power-On Reset

. . . . . . . . . . . . . . 10

. . . . . . 3

ADI Introduces a New Family of Ultralow Power Supervisory Circuits

The ADM6326, ADM6328, ADM6346, and ADM6348 are ultralow power microprocessor supervisory circuits
suited to monitoring the power supplies in portable microprocessor-based applications. This new family of
ultralow power supervisory circuits extend the battery life of portable devices by only consuming 500 nA (typ)
supply current while maximizing product reliability through robust power supply monitoring.

Ultralow 500 nA

supply current

Reset thresholds available

from 2.2 V to 4.63 V

Fully specified over

temperature

100 ms (min) power-on

reset pulse width

Low Power Comparators

Supervisory—Watchdog
Timers

. . . . . . . . . . . . . . . . . . . . . . 11

Multivoltage Supervisors

Analog Sequencers

Digital Sequencers

Analog Devices in

Power Management. . . . . . . . . . . . . 12

. . . . . . . . 10

. . . . . . . . 11

. . . . . . . . . . . . 11

. . . . . . . . . . . . 11

Part
Number

ADM6326,
ADM6328

ADM6346,
ADM6348

1

1000 to 4999

Three versions:

push-pull active low,

push-pull active high, and

open-drain active low

Reset

Threshold (V

2.2, 2.32, 2.4, 2.5, 2.63,

2.7, 2.8, 2.93, 3.0, 3.08

3.3, 3.4, 3.5, 3.6, 3.7,

3.8, 3.9, 4.0, 4.1, 4.2,

4.3, 4.38, 4.5, 4.63

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)

Timeout (ms

Min Reset

100

100

Reset Output Stage

)

Active Low

ADM6326: push-pull

ADM6328: open-drain

ADM6346: push-pull

ADM6348: open-drain

3-lead SOT-23 package,

no external components required

Supply Current

Typ (𝛍A)

0.5 3-lead SOT-23 0.95

1 3-lead SOT-23 0.95

Package

Price

(

$U.S.

1

)

Simple Reset/Power-On Reset

Analog Devices offers an extensive range of reset generator circuits
designed for use in microprocessor-based systems to monitor power
supply voltage levels from 1.8 V to 5 V. Their reset output signals are
asserted whenever the supply voltage falls below a preset threshold level.

A number of these devices offer a manual reset input, allowing a user
to safely reset a microprocessor system by means of an external push­button switch.

5V

V

MANUAL

RESET

ADP121

IN

GND

V

OUT

ADM706R/
ADM706S/
ADM706T

PFI

MR

V

GND

3.3V

V

CC

RESET

WDI

WDO

PFO

RESET

I/O LINE

NMI

INTERRUPT

GND

CC

P

Part
Number

Reset Threshold (V

)

Min Reset

Timeout (ms

Reset Output Stage

)

Active Low Active High

Manual Reset

Capability

Supply Current

Typ (𝛍A)

Package

Price

(

ADM1810 4.35, 4.62 100 Push-pull — No 4 3-lead SC70, 3-lead SOT-23 0.45

ADM1811 4.35, 4.62 100

Internal
pull-up

— No 4 3-lead SC70, 3-lead SOT-23 0.45

ADM1812 4.35, 4.62 100 — Push-pull No 4 3-lead SC70, 3-lead SOT-23 0.45

ADM1813 4.35, 4.62 100

Internal
pull-up

— Yes 4 3-lead SC70, 3-lead SOT-23 0.39

ADM1815 2.18, 2.31, 2.55, 2.88, 3.06 100 Push-pull — No 4 3-lead SC70, 3-lead SOT-23 0.39

ADM1816 2.18, 2.31, 2.55, 2.88, 3.06 100

Internal
pull-up

— No 4 3-lead SC70, 3-lead SOT-23 0.45

ADM1817 2.18, 2.31, 2.55, 2.88, 3.06 100 — Push-pull No 4 3-lead SC70, 3-lead SOT-23 0.45

ADM1818 2.18, 2.31, 2.55, 2.88, 3.06 100

ADM6315 2.63, 2.93, 3.08, 4.39, 4.5, 4.63

2.5, 2.63, 2.7, 2.8, 2.93, 3.0, 3.08, 3.2,

ADM6319

3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1,

4.2, 4.3, 4.39, 4.5, 4.63, 4.7, 4.8, 4.9, 5.0

2.5, 2.63, 2.7, 2.8, 2.93, 3.0, 3.08, 3.2,

ADM6322

3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1,

4.2, 4.3, 4.39, 4.5, 4.63, 4.7, 4.8, 4.9, 5.0

ADM6326

ADM6328

ADM6346

ADM6348

2.2, 2.32, 2.4, 2.5, 2.63, 2.7,

2.8, 2.93, 3.0, 3.08

2.2, 2.32, 2.4, 2.5, 2.63, 2.7,

2.8, 2.93, 3.0, 3.08

3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0,

4.1, 4.2, 4.3, 4.38, 4.5, 4.63

3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0,

4.1, 4.2, 4.3, 4.38, 4.5, 4.63

1, 20, 140,

1120

1, 20, 140,

1120

1, 20, 140,

1120

100 Push-pull — No 0.5 3-lead SOT-23 0.95

100 Open-drain — No 0.5 3-lead SOT-23 0.95

100 Push-pull — No 1 3-lead SOT-23 0.95

100 Open-drain — No 1 3-lead SOT-23 0.95

Internal
pull-up

— Yes 4 3-lead SC70, 3-lead SOT-23 0.45

Open-drain — Yes 4 4-lead SOT-143 0.73

Push-pull Push-pull Yes 5 5-lead SOT-23 0.50

Open-drain Push-pull Yes 5 5-lead SOT-23 0.50

1.58, 1.67, 2.19, 2.31, 2.4, 2.5, 2.63, 2.7,

ADM6384

2.8, 2.93, 3.0, 3.08, 3.2, 3.3, 3.4, 3.5, 3.6,

3.7, 3.8, 3.9, 4.0, 4.1, 4.2, 4.3, 4.39, 4.5,

1, 20, 140,

1120

Push-pull — Yes 3 4-lead SC70 0.94

4.63, 4.7, 4.8, 4.9, 5.0
ADM6711 2.32, 2.63, 2.93, 3.08, 4.38, 4.63 140 Push-pull — Yes 12 4-lead SC70 0.26
ADM6713 2.32, 2.63, 2.93, 3.08, 4.38, 4.63 140 Open-drain — Yes 12 4-lead SC70 0.28

ADM6825

1.58, 1.67, 2.19, 2.32, 2.63,

2.93, 3.08, 4.38, 4.63

140 Push-pull Push-pull Yes 7 5-lead SOT-23 0.50

ADM698 4.65 140 Push-pull Push-pull No 600 8-lead PDIP, 16-lead SOIC 1.35
ADM707 4.65 160 Push-pull Push-pull Yes 190 8-lead PDIP, 8-lead SOIC 0.96

ADM708 4.4 160 Push-pull Push-pull Yes 190

8-lead PDIP, 8-lead SOIC,

8-lead MSOP
ADM709 2.63, 2.93, 3.08, 4.4, 4.65 140 Push-pull — No 35 8-lead PDIP, 8-lead SOIC 0.70
ADM803 2.32, 2.63, 2.93, 3.08, 4.38, 4.63 140 Open-drain — No 17 3-lead SC70 0.26
ADM809 2.32, 2.63, 2.93, 3.08, 4.0, 4.38, 4.63 140 Push-pull — No 17 3-lead SC70, 3-lead SOT-23 0.61
ADM810 2.32, 2.63, 2.93, 3.08, 4.0, 4.38, 4.63 140 — Push-pull No 17 3-lead SC70, 3-lead SOT-23 0.60
ADM811 2.32, 2.63, 2.93, 3.08, 4.38, 4.63 140 Push-pull Yes 5 4-lead SOT-143 0.45
ADM812 2.32, 2.63, 2.93, 3.08, 4.38, 4.63 140 — Push-pull Yes 5 4-lead SOT-143 0.45
ADM825 2.19, 2.32, 2.63, 2.93, 3.08, 4.38, 4.63 140 Push-pull Push-pull Yes 5 5-lead SC70, 5-lead SOT-23 0.50

ADM8698 4.65 140 Push-pull Push-pull No 70

1

1000 to 4999

8-lead PDIP, 8-lead SOIC_N,

16-lead SOIC_W

$U.S.

0.84

1.99

1

)

2

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Watchdog Supervisory Circuits

Microprocessors need to be reset when code execution errors occur, as well

when supply voltages fall to invalid levels. A watchdog function can detect

as
code execution errors by monitoring logic transitions on a microprocessor’s
output pin. If the transitions are not frequent enough, the watchdog circuit

ADM6316 Single Channel Supervisor with Watchdog Timer

V

CC

ADM6316

MR

RESET

WDI

P

initiates a reset, taking the microprocessor out of its invalid state.

V

V

CC

Many ADI reset generator watchdog circuits also feature a power-fail
detection

comparator that asserts an active low signal when the unregulated
power supply voltage falls below a predetermined level. This power-fail
output can be used to generate a nonmaskable interrupt, which allows the
microprocessor to implement a shutdown procedure before power is lost.

APPLICATIONS

• Microprocessorsystems

• Intelligentinstruments

• Portableinstruments

• PLCs

• Medical

• Energymetering

• Consumer

RESET

WDI

ADM13305 Dual Voltage Monitor with Watchdog Timer

VOLTAGE

RAILS FOR

MONITORING

TH

140ms

ADM13305

SENSE1

SENSE2

MR

FPGA,

P,

DSP,

OR

ASIC

140ms

1.6s

V

DD

RESET

WDI

Supervisory—Watchdog Timers

Part
Number

ADM1232,
ADM1232A

ADM6316

ADM6318

ADM6320

ADM6321

ADM6821

ADM6822

ADM6823

ADM6824

Reset Threshold (V

)

4.37, 4.62 250 Open-drain Push-pull Yes 150/600/1120 No

2.5, 2.63, 2.7, 2.8, 2.93, 3.0, 3.08, 3.2,

3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1,

4.2, 4.3, 4.39, 4.5, 4.63, 4.7, 4.8, 4.9, 5.0

2.5, 2.63, 2.7, 2.8, 2.93, 3.0, 3.08, 3.2,

3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1,

4.2, 4.3, 4.39, 4.5, 4.63, 4.7, 4.8, 4.9, 5.0

2.5, 2.63, 2.7, 2.8, 2.93, 3.0, 3.08, 3.2,

3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1,

4.2, 4.3, 4.39, 4.5, 4.63, 4.7, 4.8, 4.9, 5.0

2.5, 2.63, 2.7, 2.8, 2.93, 3.0, 3.08, 3.2,

3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1,

4.2, 4.3, 4.39, 4.5, 4.63, 4.7, 4.8, 4.9, 5.0

1.58, 1.67, 2.19, 2.32, 2.63, 2.93,

3.08, 4.38, 4.63

1.58, 1.67, 2.19, 2.32, 2.63, 2.93,

3.08, 4.38, 4.63

1.58, 1.67, 2.19, 2.32, 2.63, 2.93,

3.08, 4.38, 4.63

1.58, 1.67, 2.19, 2.32, 2.63, 2.93,

3.08, 4.38, 4.63

Min Reset

Timeout (ms

1, 20,

140, 1120

1, 20,

140, 1120

1, 20,

140, 1120

1, 20,

140, 1120

140 — Push-pull Yes 1600 No 5-lead SOT-23 0.75

140 Open-drain — Yes 1600 No 5-lead SOT-23 0.75

140 Push-pull — Yes 1600 No 5-lead SOT-23 0.75

140 Push-pull Push-pull No 1600 No 5-lead SOT-23 0.75

ADM699 4.65 140 Push-pull Push-pull No 1600 No

ADM705 4.65 160 Push-pull — Yes 1600 Yes

ADM706 4.4 160 Push-pull — Yes 1600 Yes

ADM823 2.19, 2.32, 2.63, 2.93, 3.08, 4.38, 4.63 140 Push-pull — Yes 1600 No

ADM824 2.19, 2.32, 2.63, 2.93, 3.08, 4.38, 4.63 140 Push-pull Push-pull Yes 1600 No

ADM8616

ADM8617

1.58, 1.67, 2.19, 2.32, 2.63, 2.93,

3.08, 4.38, 4.63

1.58, 1.67, 2.19, 2.32, 2.63, 2.93,

3.08, 4.38, 4.63

1, 20,

140, 1120

1, 20,

140, 1120

ADM8699 4.65 140 Push-pull Push-pull No 1600 No

ADM9690 4.31 10 typ, 50 typ Push-pull — No 0.75/1.5/12.5/25 No 8-lead SOIC 1.50

2.93 and 1.68, 2.93 and 2.25,

ADM13305

4.55 and 2.93, 2.93 and 0.6 (adj), or

140 Push-pull Push-pull Yes 1600 No 8-lead SOIC_N 0.95

2.25 and 0.6 (adj)

1

1000 to 4999

Reset Output Stage

)

Active Low Active High

Manual Reset

Capability

Typ Watchdog

Timeout (ms

Power-Fail

)

Indicator

Package

8-lead PDIP, 8-lead

SOIC, 16-lead SOIC_W,

8-lead MSOP

Push-pull — Yes

Push-pull Push-pull No

Open-drain — Yes

Open-drain Push-pull No

6.3/102/1600/
25,600

6.3/102/1600/
25,600

6.3/102/1600/
25,600

6.3/102/1600/
25,600

No 5-lead SOT-23 0.50

No 5-lead SOT-23 0.50

No 5-lead SOT-23 0.50

No 5-lead SOT-23 0.50

8-lead PDIP,

16-lead SOIC

8-lead PDIP,
8-lead SOIC
8-lead PDIP,
8-lead SOIC

5-lead SC70,

5-lead SOT-23

5-lead SC70,

5-lead SOT-23

Push-pull — No 6.3/102/1600 No 4-lead SC70 0.85

Open-drain — No 6.3/102/1600 No 4-lead SC70 0.85

8-lead PDIP, 8-lead

_

N, 16-lead SOIC_W

SOIC

Price

(

$U.S.

0.94

1.66

1.01

1.68

0.50

0.50

1.99

1

)

3

Multivoltage Monitors

Analog Devices offers a portfolio of multivoltage monitors suited to
monitoring two, three, or four supplies. There are several device families
offering combinations of positive and negative pretrimmed thresholds and
user adjustable inputs, with some including a watchdog timer function.
With up to twice the threshold accuracy over temperature of competitive
parts, these new ADI products offer the ability to monitor emerging low
voltage core requirements and, therefore, maximize system protection.

High Accuracy Is Critical When Monitoring Low Voltages

1V CORE VOLTAGE (+5% TOLERANCE), 1.05V

1V SUPPLY (+3% REGULATION), 1.03V

1.05V

1.03V

1V

3.3V

3.3V

1V SUPPLY

1V SUPPLY (–3% REGULATION), 0.97V

1V CORE VOLTAGE (–5% TOLERANCE), 0.95V

2% RANGE FOR UV MONITORING

0.97V

0.95V

ADM1184

VIN1

0.6V

VCC

+

–

STATE

MACHINE

POWER GOOD

In this example a 1 V regulated supply produces a voltage that varies between 0.97 V and 1.03 V. The core voltage acceptable is 1 V (±5%),
that is, 0.95 V to 1.05 V. This results in a range of just 2.0% for UV monitoring. The high ±0.8% accuracy of the ADM1184 along with ±0.1%
accurate resistors in the voltage divider at VINx combine to allow accurate monitoring of the undervoltage level within this 2% range.

ADM6339 Quad Voltage Monitor Features

•Monitors positive and negative supplies

•Factory set threshold options:

–5 V, 1.8 V, 2.5 V, 3.0 V, 3.3 V and 5 V

•Adjustable input threshold options:

–0.5 V, 0.62 V, 1.23 V

5V

3.3V

1V

–5V

IN

1

IN

2

IN

3

IN

4

V

REF

5V PULL-UP

200ms

TIMEOUT

ADM6339Q

IN

1

IN

2

RESET

P

Multivoltage Supervisors

(ms)

Reset Output Stage

Active

Low

Active

High

Manual

Reset

Capability

Typ Watchdog

Timeout (ms)

UV and OV

Monitor

Package

($U.S.)

Part
Number

Number of

Monitored

Voltages

Reset

Threshold (V)

Adjustable

Accuracy

Min Reset

Timeout

ADM13305 2 0.6 (adj), 1.68, 2.25, 2.93, 4.55 ±0.8% 140 Push-pull Push-pull Yes 1600 — 8-lead SOIC_N 0.95

ADM13307 3

ADM6710 3 or 4

0.6 (adj), 1.25 (adj), 1.68, 2.25,

2.93, 4.55

0.62 (adj), 1.58, 1.67, 2.19, 2.32,

2.63, 2.78, 2.93, 3.08, 4.38, 4.63

±0.8% 140 Push-pull Push-pull Yes — — 8-lead SOIC_N 0.98

±1.5% 140 Open-drain — — — — 6-lead SOT-23 1.60

ADM1184 4 0.6 (adj) ±0.8% 100 Open-drain — — — — 10-lead MSOP 2.39

–0.50 (adj), 0.62 (adj), 1.23 (adj),

ADM6339 4

–4.38, –4.63, 1.58, 2.19, 2.63,

±0.8% 140 Open-drain — — — — 6-lead SOT-23 1.79

2.78, 2.93, 3.08, 4.38, 4.63

ADM2914 4 0.5 (adj) ±1.5% Adj Open-drain — — — Yes 16-lead QSOP 3.99

ADM12914 4 0.5 (adj) ±0.8% Adj Open-drain — — — Yes 16-lead QSOP 4.99

1

1000 to 4999

4

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Price

1