Datasheet > AS1972

AS1972

更新时间： 2022-12-27 17:50:39

品牌	Logo	应用领域
艾迈斯 - AMSCO		比较器
页数	文件大小	规格书
18页	754K
描述
Low-Voltage Single/Dual/Quad Comparators

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AS1972 数据手册

Data Sheet

AS1970 - AS1975

Low-Voltage Single/Dual/Quad Comparators

1 General Description

2 Key Features

ꢀ CMOS Push/Pull Output Sinks and Sources 8mA

The AS1970 - AS1975 are single/dual/quad compara-

tors that operate with supplies from 2.5 to 5.5V making

them perfect for all 3- and 5-volt applications. The com-

parators can also operate with dual supplies (±1.25 to

±2.75V), and require very little supply current (down to

8.5µA) with minimal propagation delay (300ns).

(AS1970/AS1972/AS1974)

ꢀ CMOS Open-Drain Output Voltage Extends Beyond

VCC (AS1971/AS1973/AS1975)

ꢀ Quiescent Supply Current: 8.5µA per Comparator

ꢀ Internal Hysteresis: 3mV

Low input bias current (1.0pA, typ), low input offset volt-

age (0.5mV, typ), and internal hysteresis (3mV) make

these comparators ideal for low-power single-cell appli-

cations including power-management and power-moni-

toring systems.

ꢀ 3V/5V Logic-Level Translation

ꢀ Single-Supply Operation: 2.5 to 5.5V

ꢀ Common-Mode Input Voltage Range Extends

The comparators are available as the standard products

listed in Table 1.

250mV Above the Rails

Table 1. Standard Products

ꢀ Low Propagation Delay: 300ns

Model

Output Type

Push/Pull

ꢀ Minimized Overall Power Consumption

ꢀ Supply Current @1MHz Switching Frequency: 80µA

ꢀ No Phase Reversal for Overdriven Inputs

AS1970/AS1972/AS1974

AS1971/AS1973/AS1975

Open-Drain

The AS1970/AS1972/AS1974 push/pull output can sink

or source current.

ꢀ Package Types:

- 5-pin SOT23 – AS1970/AS1971

- 8-pin MSOP – AS1972/AS1973

- 14-pin TSSOP – AS1974/AS1975

The AS1971/AS1973/AS1975 open-drain output can be

pulled beyond VCC to a maximum of 5.5V > VEE. These

open-drain versions are ideal for logic-level translators

or bipolar-to-unipolar converters.

Large internal output drivers allow Rail-to-Rail output

swings with loads of up to 8mA.

3 Applications

The devices are ideal for battery-powered systems,

mobile communication devices, zero-crossing detectors,

window comparators, level translators, threshold detec-

tors/discriminators, ground/supply-sensing applications,

IR receivers or any other space-limited application with

low power-consumption requirements.

The AS1970/AS1971 are available in a 5-pin SOT23

package. The AS1972/AS1973 are available in a 8-pin

MSOP package. The AS1974/AS1975 are available in a

14-pin TSSOP package.

Figure 1. Block Diagrams

INA+

OUTA

–

INA-

INA+

INA-

–

OUTA

IN+

IN-

INB+

INB-

INC+

INC-

IND+

IND-

VCC

–

OUTB

OUTC

OUT

VEE

–

INB+

OUTB

VEE

INB-

VCC

–

AS1972/AS1973

OUTD

VEE

AS1970/AS1971

AS1974/AS1975

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