AS1977-T

AS1977-T Datasheet

AS1976, AS1977

Part	Datasheet
AS1977-T	AS1977-T (pdf)

Related Parts	Information
AS1976-T	AS1976-T

PDF Datasheet Preview
AS1976, AS1977 Ultra-Low Current, 1.8V Comparators Data Sheet 1 General Description The AS1976/AS1977 are very low-current comparators that can operate beyond the rail voltages and are guaranteed to operate down to 1.8V Low input bias current, current-limiting output circuitry, and ultra-small packaging make these comparators ideal for low-power 2-cell applications including powermanagement and power-monitoring systems. The comparators are available as the standard products listed in Table Table Standard Products Model Output Type Current AS1976 Push/Pull 200nA AS1977 Open-Drain 200nA The AS1976 push/pull output can sink or source current. The AS1977 open-drain output can be pulled beyond VCC to a maximum of 6V > VEE. This open-drain model is ideal for use as a logic-level translator or bipolar-tounipolar converter. Large internal output drivers provide rail-to-rail output swings with loads up to 8mA. Both devices feature builtin battery power-management and power-monitoring circuitry. The AS1976/AS1977 are available in a 5-pin SOT23 package. 2 Key Features ! CMOS Push/Pull Output Sinks and Sources 8mA AS1976 ! CMOS Open-Drain Output Voltage Extends Beyond VCC AS1977 ! Ultra-Low Supply Current 200nA ! Internal Hysteresis 3mV ! 3V-to5V Logiv-Level Translation ! Guaranteed to Operate Down to +1.8V ! Input Voltage Range Operates 200mV Beyond the Rails ! Crowbar Current-Free Switching ! 5-pin SOT23 Package 3 Applications The devices are ideal for battery monitoring/management, mobile communication devices, laptops and PDAs, ultra-low-power systems, threshold detectors/discriminators, telemetry and remote systems, medical instruments, or any other space-limited application with low power-consumption requirements. Figure Block Diagram VCC AS1976/ AS1977 1 OUT 2 VEE 1 - 17 AS1976/AS1977 Data Sheet - Pinout 4 Pinout Data Sheet - Ordering Information 11 Ordering Information The devices are available as the standard products shown in Table Table Ordering Information Type Marking AS1976 ASI9 Ultra-Low Current 1.8V Comparator AS1976-T ASI9 Ultra-Low Current 1.8V Comparator AS1977 ASJA Ultra-Low Current 1.8V Comparator AS1977-T ASJA Ultra-Low Current 1.8V Comparator Output Type Delivery Form Package Push/Pull Tube 5-pin SOT23 Push/Pull Tape and Reel 5-pin SOT23 Open-Drain Tube 5-pin SOT23 Open-Drain Tape and Reel 5-pin SOT23 16 - 17 AS1976/AS1977 Data Sheet Copyrights Copyright 1997-2007, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks or registered trademarks of their respective companies. Disclaimer Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or lifesustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for each application. For shipments of less than 100 parts the manufacturing flow might show deviations from the standard production flow, such as test flow or test location. The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems AG rendering of technical or other services. Contact Information Headquarters austriamicrosystems AG A-8141 Schloss Premstaetten, Austria Tel +43 0 3136 500 0 Fax +43 0 3136 525 01 For Sales Offices, Distributors and Representatives, please visit: 17 - 17

PDF Datasheet Preview

AS1976, AS1977

Ultra-Low Current, 1.8V Comparators

Data Sheet
1 General Description

The AS1976/AS1977 are very low-current comparators that can operate beyond the rail voltages and are guaranteed to operate down to 1.8V

Low input bias current, current-limiting output circuitry, and ultra-small packaging make these comparators ideal for low-power 2-cell applications including powermanagement and power-monitoring systems.

The comparators are available as the standard products listed in Table

Table Standard Products

Model

Output Type

Current

AS1976

Push/Pull
200nA

AS1977

Open-Drain
200nA

The AS1976 push/pull output can sink or source current.

The AS1977 open-drain output can be pulled beyond VCC to a maximum of 6V > VEE. This open-drain model is ideal for use as a logic-level translator or bipolar-tounipolar converter.

Large internal output drivers provide rail-to-rail output swings with loads up to 8mA. Both devices feature builtin battery power-management and power-monitoring circuitry.

The AS1976/AS1977 are available in a 5-pin SOT23 package.
2 Key Features
! CMOS Push/Pull Output Sinks and Sources 8mA AS1976
! CMOS Open-Drain Output Voltage Extends Beyond VCC AS1977
! Ultra-Low Supply Current 200nA
! Internal Hysteresis 3mV
! 3V-to5V Logiv-Level Translation
! Guaranteed to Operate Down to +1.8V
! Input Voltage Range Operates 200mV Beyond the Rails
! Crowbar Current-Free Switching
! 5-pin SOT23 Package
3 Applications

The devices are ideal for battery monitoring/management, mobile communication devices, laptops and PDAs, ultra-low-power systems, threshold detectors/discriminators, telemetry and remote systems, medical instruments, or any other space-limited application with low power-consumption requirements.

Figure Block Diagram

VCC AS1976/ AS1977
1 OUT
2 VEE
1 - 17

AS1976/AS1977

Data Sheet - Pinout
4 Pinout
Data Sheet - Ordering Information
11 Ordering Information

The devices are available as the standard products shown in Table
Table Ordering Information

Type

Marking

AS1976

ASI9

Ultra-Low Current 1.8V Comparator

AS1976-T

ASI9 Ultra-Low Current 1.8V Comparator

AS1977

ASJA Ultra-Low Current 1.8V Comparator

AS1977-T

ASJA Ultra-Low Current 1.8V Comparator

Output Type Delivery Form Package

Push/Pull

Tube
5-pin SOT23

Push/Pull Tape and Reel 5-pin SOT23

Open-Drain

Tube
5-pin SOT23

Open-Drain Tape and Reel 5-pin SOT23
16 - 17

AS1976/AS1977

Data Sheet

Copyrights

Copyright 1997-2007, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks or registered trademarks of their respective companies.

Disclaimer

Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or lifesustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for each application. For shipments of less than 100 parts the manufacturing flow might show deviations from the standard production flow, such as test flow or test location. The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems AG rendering of technical or other services.

Contact Information

Headquarters austriamicrosystems AG A-8141 Schloss Premstaetten, Austria Tel +43 0 3136 500 0 Fax +43 0 3136 525 01

For Sales Offices, Distributors and Representatives, please visit:
17 - 17

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived AS1977-T Datasheet file may be downloaded here without warranties.

Datasheet ID: AS1977-T 519674