Datasheet > AS8118

AS8118

更新时间： 2024-10-30 03:19:31

品牌	Logo	应用领域
艾迈斯 - AMSCO		驱动器电机
页数	文件大小	规格书
1页	36K
描述
Single Phase Instantaneous Energy Metering IC with On-Chip Calibration, Stepper Motor Drive and LED Output

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AS8118 数据手册

AS8118

Single Phase Instantaneous Energy Metering IC

with On-Chip Calibration, Stepper Motor Drive and LED Output

FEATURES

control block and non-volatile calibration memory for the

on-chip programming. The on-chip programming enables

the setting of the current input gain, the anti-creep

threshold, the output pulse rates and the system

calibration. The high level of integration ensures a

minimum number of non-critical external components are

required.

Features

Extremely accurate, surpassing the accuracy

requirements of the IEC 1036 Specification less than

0.1% error over a 600 : 1 dynamic range

On-chip programmable current input gain suitable for

use with low-resistance shunt resistor or current

transformer

The on-chip anti-creep circuit ensures that the AS8118

does not output pulses when the meter is in a no-load

condition and that the IEC1036 anti-creep test

requirements are fully complied with, for both direct or

transformer connection meters.

On-chip programming for output pulse rate selection

On-chip calibration eliminates the need for an external

resistor network or trim-potentiometer

Programmable on-chip creep prevention under no-

load condition

All on-chip programmable functions may be

reprogrammed a second time

The AS8118 offers three different pulse outputs. A

stepper motor drive output for directly driving a stepper

motor display, a LED output for energy consumption

indication and a dedicated high frequency output for fast

single point system calibration.

Outputs directly drive an electromechanical counter or

counters with a two phase stepper motor and

consumption LED indicator

Fast calibration pulse output for high speed manual or

automated calibration

The AS8118 is available in either surface mount SOIC-18

or dual-in-line DIP-18 packages.

On-chip voltage reference and power supply

monitoring

Block Diagram

Bi-directional or unidirectional energy measurement,

with direction indication output available

Description

Non-volatile

Calibration

AGND

Buffer

The AS8118 is a very accurate single-phase bi-directional

instantaneous energy measurement integrated circuit,

which surpasses all the accuracy requirements for

IEC1036 alternating current static watt-hour meters. The

measured energy is converted into pulses with the

number of output pulses being proportional to the

measured energy.

Digital

Filter

Σ∆-mod

Power

Calculation

Digital

Filter

Σ∆-mod

VREF

The AS8118 is ideal for use in ‘stand alone’ kWh meter

applications, where the IC directly drives an

CAL

LED

MON

MOP

XIN

Crystal

Osc

XOUT

Control

electromechanical counter with a two-phase stepper

motor, or for more complex meter applications, the

AS8118 interfaces directly to a micro-controller.

POR

The highly integrated AS8118 design includes all the

required functional blocks. The blocks comprise of analog

to digital converters (ADC) for the voltage and current

channels, digital filters, a digital signal processing block, a

Figure 1

Block diagram of the AS8118

Revision 1.7, 22-Nov-04

Page 1 of 1

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与AS8118相关器件

型号	品牌	获取价格	描述	数据表
AS8118_1	AMSCO	获取价格	Single Phase Instantaneous Energy Metering IC with On-Chip Calibration, Stepper Motor Driv
AS8118D18	AMSCO	获取价格	Single Phase Instantaneous Energy Metering IC with On-Chip Calibration, Stepper Motor Driv
AS8118S18	AMSCO	获取价格	Single Phase Instantaneous Energy Metering IC with On-Chip Calibration, Stepper Motor Driv
AS812M-1.1	CALOGIC	获取价格	Fixed Positive Standard Regulator, 1.1VCMOS, PDSO5, PLASTIC, SOT-23, 5 PIN
AS812M-1.5	CALOGIC	获取价格	Fixed Positive Standard Regulator, 1.5VCMOS, PDSO5, PLASTIC, SOT-23, 5 PIN
AS812M-2.0	CALOGIC	获取价格	Fixed Positive Standard Regulator, 2VCMOS, PDSO5, PLASTIC, SOT-23, 5 PIN
AS812M-2.5	CALOGIC	获取价格	Fixed Positive Standard Regulator, 2.5VCMOS, PDSO5, PLASTIC, SOT-23, 5 PIN
AS812M-3.0	CALOGIC	获取价格	Fixed Positive Standard Regulator, 3VCMOS, PDSO5, PLASTIC, SOT-23, 5 PIN
AS812M-3.3	CALOGIC	获取价格	Fixed Positive Standard Regulator, 3.3VCMOS, PDSO5, PLASTIC, SOT-23, 5 PIN
AS812M-4.0	CALOGIC	获取价格	Fixed Positive Standard Regulator, 4VCMOS, PDSO5, PLASTIC, SOT-23, 5 PIN

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