Datasheet > AS1976_1

AS1976_1

更新时间： 2022-12-27 17:50:39

品牌	Logo	应用领域
艾迈斯 - AMSCO		/
页数	文件大小	规格书
17页	423K
描述
Ultra-Low Current, 1.8V Comparators

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Data Sheet

AS1976, AS1977

Ultra-Low Current, 1.8V Comparators

1 General Description

2 Key Features

ꢀ CMOS Push/Pull Output Sinks and Sources 8mA

The AS1976/AS1977 are very low-current comparators

that can operate beyond the rail voltages and are guar-

anteed to operate down to 1.8V

(AS1976)

ꢀ CMOS Open-Drain Output Voltage Extends Beyond

Low input bias current, current-limiting output circuitry,

and ultra-small packaging make these comparators

ideal for low-power 2-cell applications including power-

management and power-monitoring systems.

VCC (AS1977)

ꢀ Ultra-Low Supply Current: 200nA

ꢀ Internal Hysteresis: 3mV

The comparators are available as the standard products

listed in Table 1.

Table 1. Standard Products

ꢀ 3V-to5V Logiv-Level Translation

ꢀ Guaranteed to Operate Down to +1.8V

Model

AS1976

AS1977

Output Type

Push/Pull

Current

200nA

Open-Drain

ꢀ Input Voltage Range Operates 200mV Beyond the

Rails

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-to-

unipolar converter.

ꢀ Crowbar Current-Free Switching

ꢀ No Phase Reversal for Overdriven Inputs

ꢀ 5-pin SOT23 Package

Large internal output drivers provide rail-to-rail output

swings with loads up to 8mA. Both devices feature built-

in battery power-management and power-monitoring cir-

cuitry.

3 Applications

The AS1976/AS1977 are available in a 5-pin SOT23

package.

The devices are ideal for battery monitoring/manage-

ment, mobile communication devices, laptops and

PDAs, ultra-low-power systems, threshold detectors/dis-

criminators, telemetry and remote systems, medical

instruments, or any other space-limited application with

low power-consumption requirements.

Figure 1. Block Diagram

VCC

AS1976/

AS1977

IN+

OUT

–

IN-

VEE

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