ADM8693ARNZ

ADM8693ARNZ Datasheet

Microprocessor Supervisory Circuits ADM8690/ADM8691/ADM8692/ADM8693/ADM8695

Part	Datasheet
ADM8693ARNZ	ADM8693ARNZ (pdf)

Related Parts	Information
ADM8693ARW-REEL	ADM8693ARW-REEL
ADM8693ARN	ADM8693ARN
ADM8693ARN-REEL	ADM8693ARN-REEL
ADM8693ARU-REEL	ADM8693ARU-REEL
ADM8693ARW	ADM8693ARW
ADM8693AN	ADM8693AN
ADM8692ARNZ	ADM8692ARNZ
ADM8693ANZ	ADM8693ANZ
ADM8693ARUZ	ADM8693ARUZ
ADM8693ARWZ	ADM8693ARWZ

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Microprocessor Supervisory Circuits ADM8690/ADM8691/ADM8692/ADM8693/ADM8695 00093-001 Upgrade for ADM690 to ADM695, MAX690 to MAX695 Specified over temperature Low power consumption mW Precision voltage monitor Reset assertion down to 1 V VCC Low switch on resistance Ω normal, 7 Ω in backup High current drive 100 mA Watchdog timer 100 ms, s, or adjustable 400 nA standby current Automatic battery backup power switching Extremely fast gating of chip enable signals 3 ns Voltage monitor for power fail Available in TSSOP package Microprocessor systems Computers Controllers Intelligent instruments Automotive systems PRODUCT HIGHLIGHTS The ADM8690 and ADM8692 are available in 8-lead, PDIP packages and provide: Power-on reset output during power-up, power-down, and brownout conditions. The RESET output remains operational with VCC as low as 1 V. Battery backup switching for CMOS RAM, CMOS microprocessor, or other low power logic. A reset pulse if the optional watchdog timer has not been toggled within a specified time. A V threshold detector for power-fail warning, low battery detection, or to monitor a power supply other than 5 V. The ADM8691, ADM8693, and ADM8695 are available in 16-lead PDIP and small outline packages including TSSOP and provide three additional functions: Write protection of CMOS RAM or EEPROM. Adjustable reset and watchdog timeout periods. Separate watchdog timeout, backup battery switchover, and low VCC status outputs. FUNCTIONAL BLOCK DIAGRAMS VBATT VCC 4.65V1 RESET GENERATOR2 VOUT RESET WATCHDOG INPUT WDI POWER FAIL INPUT PFI WATCHDOG TRANSITION DETECTOR 1.6s ADM8690/ ADM8692 1.3V POWER FAIL OUTPUT PFO 1VOLTAGE DETECTOR = 4.65V ADM8690 4.40V ADM8692 2RESET PULSE WIDTH = 50ms AD8690, ADM8692 Figure ADM8690/ADM8692 VBATT BATT ON ADM8691/ ADM8693/ ADM8695 VOUT VCC CEIN 4.65V1 OSC IN OSC SEL RESET AND WATCHDOG TIME BASE RESET GENERATOR CEOUT LOW LINE RESET WATCHDOG INPUT WDI POWER FAIL INPUT PFI WATCHDOG TRANSITION DETECTOR Increasing the Drive 14 Using a Rechargeable Battery for Backup 14 Adding Hysteresis to the Power-Fail Comparator 14 Monitoring the Status of the Battery 14 Alternate Watchdog Input Drive Circuits 15 Typical 16 ADM8690 and 16 ADM8691, ADM8693, and ADM8695 16 RESET Output 16 Power-Fail Detector 17 RAM Write 17 Watchdog 17 Outline Dimensions 18 Ordering Guide 19 0 Initial Version ADM8690/ADM8691/ADM8692/ADM8693/ADM8695 The ADM869x family of supervisory circuits offers complete single- chip solutions for power supply monitoring and battery control functions in microprocessor systems. These functions include microprocessor reset, backup battery switchover, watchdog timer, CMOS RAM write protection, and power failure warning. The complete family provides a variety of configurations to satisfy most microprocessor system requirements. The ADM869x family is fabricated using an advanced epitaxial CMOS process combining low power consumption mW , extremely fast chip enable gating 3 ns , and high reliability. RESET assertion is guaranteed with VCC as low as 1 V. In addition, the power switching circuitry is designed for minimal voltage drop thereby permitting increased output current drive of up to 100 mA without the need of an external pass transistor. See Table 1 for a product selection guide listing the characteristics of each device in the ADM869x family. To place an order, use the Ordering Guide provided as the last section of this data sheet. Table Product Selection Guide Nominal Reset Time Nominal VCC Reset Threshold ADM8690 50 ms ADM8691 50 ms or ADJ V ADM8692 50 ms ADM8693 50 ms or ADJ V ADM8695 200 ms or ADJ V Nominal Watchdog Timeout Period s 100 ms, s, ADJ s 100 ms, s, ADJ 100 ms, s, ADJ Battery Backup Switching Yes Base Drive Ext PNP No Yes No Yes Chip Enable Signals No Yes No Yes ADM8690/ADM8691/ADM8692/ADM8693/ADM8695 SPECIFICATIONS VCC = full operating range, VBATT = V, TA = TMIN to TMAX, unless otherwise noted. Table Parameter BATTERY BACKUP SWITCHING VCC Operating Voltage Range ADM8690, ADM8691, ADM8695 ADM8692, ADM8693 VBATT Operating Voltage Range ADM8690, ADM8691, ADM8695 ADM8692, ADM8693 VOUT Output Voltage VOUT in Battery Backup Mode Supply Current Excludes IOUT Supply Current in Battery Backup Mode Battery Standby Current + = Discharge, − = Charge Battery Switchover Threshold VCC VBATT Battery Switchover Hysteresis BATT ON Output Voltage BATT ON Output Short-Circuit Current RESET AND WATCHDOG TIMER Reset Voltage Threshold ADM8690, ADM8691, ADM8695 ADM8692, ADM8693 Reset Threshold Hysteresis Reset Timeout Delay ADM8690, ADM8691, ADM8692, ADM8693, ADM8695 Watchdog Timeout Period, Internal Oscillator Watchdog Timeout Period, External Clock Minimum WDI Input Pulse Width RESET Output Voltage VCC = 1 V RESET, LOW LINE Output Voltage RESET, WDO Output Voltage Output Short-Circuit Source Current Output Short-Circuit Sink Current WDI Input Threshold1 Logic Low Logic High WDI Input Current Max Unit Test Conditions/Comments VCC − VCC − VCC − VCC − VBATT − VBATT − 200 µA 70 50 20 IOUT = 1 mA IOUT 100 mA IOUT = 250 µA, VCC < VBATT − V IOUT = 100 µA VCC = 0 V, VBATT = V > VCC > VBATT + V TA = 25°C Power-up Power-down ISINK = mA BATT ON = VOUT = V sink current BATT ON = 0 V source current 35 140 70 3840 768 50 −10 50 200 100 4064 1011 10 25 ORDERING GUIDE Model1 ADM8690AN ADM8690ANZ ADM8690ARN-REEL ADM8690ARNZ ADM8691ANZ ADM8691ARN-REEL ADM8691ARNZ ADM8691ARW-REEL ADM8691ARWZ ADM8691ARU-REEL ADM8691ARUZ ADM8692ARNZ ADM8693AN ADM8693ANZ ADM8693ARN-REEL ADM8693ARNZ ADM8693ARW-REEL ADM8693ARWZ ADM8693ARU-REEL ADM8693ARUZ ADM8695ARW-REEL ADM8695ARWZ 1 Z = RoHS Compliant Part. Temperature Range −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C Package Description 8-Lead Plastic Dual In-Line Package [PDIP] 8-Lead Plastic Dual In-Line Package [PDIP] 8-Lead Standard Small Outline Package [SOIC_N] 8-Lead Standard Small Outline Package [SOIC_N] 8-Lead Standard Small Outline Package [SOIC_N] 16-Lead Plastic Dual In-Line Package [PDIP] 16-Lead Standard Small Outline Package [SOIC_N] 16-Lead Standard Small Outline Package [SOIC_N] 16-Lead Standard Small Outline Package [SOIC_N] 16-Lead Standard Small Outline Package [SOIC_W] 16-Lead Standard Small Outline Package [SOIC_W] 16-Lead Standard Small Outline Package [SOIC_W] 16-Lead Thin Shrink Small Outline Package [TSSOP] 16-Lead Thin Shrink Small Outline Package [TSSOP] 16-Lead Thin Shrink Small Outline Package [TSSOP] 8-Lead Standard Small Outline Package [SOIC_N] 16-Lead Plastic Dual In-Line Package [PDIP] 16-Lead Plastic Dual In-Line Package [PDIP] 16-Lead Standard Small Outline Package [SOIC_N] 16-Lead Standard Small Outline Package [SOIC_N] 16-Lead Standard Small Outline Package [SOIC_N] 16-Lead Standard Small Outline Package [SOIC_W] 16-Lead Standard Small Outline Package [SOIC_W] 16-Lead Standard Small Outline Package [SOIC_W] 16-Lead Thin Shrink Small Outline Package [TSSOP] 16-Lead Thin Shrink Small Outline Package [TSSOP] 16-Lead Standard Small Outline Package [SOIC_W] 16-Lead Standard Small Outline Package [SOIC_W] 16-Lead Standard Small Outline Package [SOIC_W] Package Option N-8 N-8 R-8 R-8 R-8 N-16 R-16 R-16 R-16 RW-16 RW-16 RW-16 RU-16 RU-16 RU-16 R-8 N-16 N-16 R-16 R-16 R-16 RW-16 RW-16 RW-16 RU-16 RU-16 RW-16 RW-16 RW-16 ADM8690/ADM8691/ADM8692/ADM8693/ADM8695 NOTES 2006-2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D00093-0-6/11 B

PDF Datasheet Preview

Microprocessor Supervisory Circuits ADM8690/ADM8691/ADM8692/ADM8693/ADM8695
00093-001

Upgrade for ADM690 to ADM695, MAX690 to MAX695 Specified over temperature Low power consumption mW Precision voltage monitor Reset assertion down to 1 V VCC Low switch on resistance Ω normal, 7 Ω in backup High current drive 100 mA Watchdog timer 100 ms, s, or adjustable 400 nA standby current Automatic battery backup power switching Extremely fast gating of chip enable signals 3 ns Voltage monitor for power fail Available in TSSOP package

Microprocessor systems Computers Controllers Intelligent instruments Automotive systems

PRODUCT HIGHLIGHTS

The ADM8690 and ADM8692 are available in 8-lead, PDIP packages and provide:

Power-on reset output during power-up, power-down, and brownout conditions. The RESET output remains operational with VCC as low as 1 V.

Battery backup switching for CMOS RAM, CMOS microprocessor, or other low power logic.

A reset pulse if the optional watchdog timer has not been toggled within a specified time.

A V threshold detector for power-fail warning, low battery detection, or to monitor a power supply other than 5 V.

The ADM8691, ADM8693, and ADM8695 are available in 16-lead PDIP and small outline packages including TSSOP and provide three additional functions:

Write protection of CMOS RAM or EEPROM. Adjustable reset and watchdog timeout periods. Separate watchdog timeout, backup battery switchover, and
low VCC status outputs.

FUNCTIONAL BLOCK DIAGRAMS

VBATT

VCC 4.65V1

RESET GENERATOR2

VOUT RESET

WATCHDOG INPUT WDI

POWER FAIL INPUT PFI

WATCHDOG TRANSITION DETECTOR
1.6s

ADM8690/ ADM8692
1.3V

POWER FAIL OUTPUT PFO
1VOLTAGE DETECTOR = 4.65V ADM8690 4.40V ADM8692
2RESET PULSE WIDTH = 50ms AD8690, ADM8692

Figure ADM8690/ADM8692

VBATT

BATT ON

ADM8691/ ADM8693/ ADM8695

VOUT

VCC CEIN
4.65V1

OSC IN OSC SEL

RESET AND WATCHDOG TIME BASE

RESET GENERATOR

CEOUT LOW LINE RESET

WATCHDOG INPUT WDI

POWER FAIL INPUT PFI

WATCHDOG TRANSITION DETECTOR
Increasing the Drive 14 Using a Rechargeable Battery for Backup 14 Adding Hysteresis to the Power-Fail Comparator 14 Monitoring the Status of the Battery 14 Alternate Watchdog Input Drive Circuits 15 Typical 16 ADM8690 and 16 ADM8691, ADM8693, and ADM8695 16 RESET Output 16 Power-Fail Detector 17 RAM Write 17 Watchdog 17 Outline Dimensions 18 Ordering Guide 19
0 Initial Version

ADM8690/ADM8691/ADM8692/ADM8693/ADM8695

The ADM869x family of supervisory circuits offers complete single- chip solutions for power supply monitoring and battery control functions in microprocessor systems. These functions include microprocessor reset, backup battery switchover, watchdog timer, CMOS RAM write protection, and power failure warning. The complete family provides a variety of configurations to satisfy most microprocessor system requirements.

The ADM869x family is fabricated using an advanced epitaxial CMOS process combining low power consumption mW ,
extremely fast chip enable gating 3 ns , and high reliability. RESET assertion is guaranteed with VCC as low as 1 V. In addition, the power switching circuitry is designed for minimal voltage drop thereby permitting increased output current drive of up to 100 mA without the need of an external pass transistor.
See Table 1 for a product selection guide listing the characteristics of each device in the ADM869x family. To place an order, use the Ordering Guide provided as the last section of this data sheet.

Table Product Selection Guide

Nominal Reset Time

Nominal VCC Reset Threshold

ADM8690 50 ms

ADM8691 50 ms or ADJ V

ADM8692 50 ms

ADM8693 50 ms or ADJ V

ADM8695 200 ms or ADJ V

Nominal Watchdog Timeout Period s 100 ms, s, ADJ s 100 ms, s, ADJ 100 ms, s, ADJ

Battery Backup Switching Yes

Base Drive Ext PNP No Yes No Yes

Chip Enable Signals No Yes No Yes

ADM8690/ADM8691/ADM8692/ADM8693/ADM8695

SPECIFICATIONS

VCC = full operating range, VBATT = V, TA = TMIN to TMAX, unless otherwise noted.

Table Parameter BATTERY BACKUP SWITCHING

VCC Operating Voltage Range ADM8690, ADM8691, ADM8695 ADM8692, ADM8693

VBATT Operating Voltage Range ADM8690, ADM8691, ADM8695 ADM8692, ADM8693

VOUT Output Voltage

VOUT in Battery Backup Mode Supply Current Excludes IOUT Supply Current in Battery Backup Mode Battery Standby Current
+ = Discharge, − = Charge Battery Switchover Threshold VCC VBATT Battery Switchover Hysteresis BATT ON Output Voltage BATT ON Output Short-Circuit Current

RESET AND WATCHDOG TIMER Reset Voltage Threshold ADM8690, ADM8691, ADM8695 ADM8692, ADM8693 Reset Threshold Hysteresis Reset Timeout Delay ADM8690, ADM8691, ADM8692, ADM8693, ADM8695 Watchdog Timeout Period, Internal Oscillator

Watchdog Timeout Period, External Clock

Minimum WDI Input Pulse Width RESET Output Voltage VCC = 1 V RESET, LOW LINE Output Voltage

RESET, WDO Output Voltage

Output Short-Circuit Source Current Output Short-Circuit Sink Current WDI Input Threshold1

Logic Low Logic High WDI Input Current

Max Unit Test Conditions/Comments

VCC − VCC −

VCC −

VCC −

VBATT − VBATT −
200 µA
70 50 20

IOUT = 1 mA IOUT 100 mA IOUT = 250 µA, VCC < VBATT − V IOUT = 100 µA VCC = 0 V, VBATT = V > VCC > VBATT + V TA = 25°C Power-up Power-down

ISINK = mA BATT ON = VOUT = V sink current BATT ON = 0 V source current
35 140 70 3840 768 50
−10
50 200 100 4064 1011
10 25
ORDERING GUIDE

Model1 ADM8690AN ADM8690ANZ ADM8690ARN-REEL ADM8690ARNZ ADM8691ANZ ADM8691ARN-REEL ADM8691ARNZ ADM8691ARW-REEL ADM8691ARWZ ADM8691ARU-REEL ADM8691ARUZ ADM8692ARNZ ADM8693AN ADM8693ANZ ADM8693ARN-REEL ADM8693ARNZ ADM8693ARW-REEL ADM8693ARWZ ADM8693ARU-REEL ADM8693ARUZ ADM8695ARW-REEL ADM8695ARWZ
1 Z = RoHS Compliant Part.

Temperature Range −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C

Package Description 8-Lead Plastic Dual In-Line Package [PDIP] 8-Lead Plastic Dual In-Line Package [PDIP] 8-Lead Standard Small Outline Package [SOIC_N] 8-Lead Standard Small Outline Package [SOIC_N] 8-Lead Standard Small Outline Package [SOIC_N] 16-Lead Plastic Dual In-Line Package [PDIP] 16-Lead Standard Small Outline Package [SOIC_N] 16-Lead Standard Small Outline Package [SOIC_N] 16-Lead Standard Small Outline Package [SOIC_N] 16-Lead Standard Small Outline Package [SOIC_W] 16-Lead Standard Small Outline Package [SOIC_W] 16-Lead Standard Small Outline Package [SOIC_W] 16-Lead Thin Shrink Small Outline Package [TSSOP] 16-Lead Thin Shrink Small Outline Package [TSSOP] 16-Lead Thin Shrink Small Outline Package [TSSOP] 8-Lead Standard Small Outline Package [SOIC_N] 16-Lead Plastic Dual In-Line Package [PDIP] 16-Lead Plastic Dual In-Line Package [PDIP] 16-Lead Standard Small Outline Package [SOIC_N] 16-Lead Standard Small Outline Package [SOIC_N] 16-Lead Standard Small Outline Package [SOIC_N] 16-Lead Standard Small Outline Package [SOIC_W] 16-Lead Standard Small Outline Package [SOIC_W] 16-Lead Standard Small Outline Package [SOIC_W] 16-Lead Thin Shrink Small Outline Package [TSSOP] 16-Lead Thin Shrink Small Outline Package [TSSOP] 16-Lead Standard Small Outline Package [SOIC_W] 16-Lead Standard Small Outline Package [SOIC_W] 16-Lead Standard Small Outline Package [SOIC_W]

Package Option N-8 N-8 R-8 R-8 R-8 N-16 R-16 R-16 R-16 RW-16 RW-16 RW-16 RU-16 RU-16 RU-16 R-8 N-16 N-16 R-16 R-16 R-16 RW-16 RW-16 RW-16 RU-16 RU-16 RW-16 RW-16 RW-16

ADM8690/ADM8691/ADM8692/ADM8693/ADM8695 NOTES
2006-2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.

D00093-0-6/11 B

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Datasheet ID: ADM8693ARNZ 517841