Datasheet > 转换器 > 模拟特殊功能转换器> AD536ASD/883B

AD536ASD/883B

更新时间： 2024-11-23 12:32:59

品牌	Logo	应用领域
亚德诺 - ADI		转换器模拟特殊功能转换器
页数	文件大小	规格书
17页	558K
描述
Integrated Circuit True RMS-to-DC Converter

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AD536ASD/883B 数据手册

Integrated Circuit

True RMS-to-DC Converter

AD536A

Data Sheet

FEATURES

FUNCTIONAL BLOCK DIAGRAM

AD536A

True rms-to-dc conversion

Laser trimmed to high accuracy

0.2% maximum error (AD536AK)

0.5% maximum error (AD536AJ)

Wide response capability

Computes rms of ac and dc signals

450 kHz bandwidth: V rms > 100 mV

2 MHz bandwidth: V rms > 1 V

Signal crest factor of 7 for 1% error

dB output with 60 dB range

ABSOLUTE

VALUE

SQUARER/

DIVIDER

COM

CURRENT

MIRROR

25kΩ

Low power: 1.2 mA quiescent current

Single- or dual-supply operation

Monolithic integrated circuit

OUT

BUFFER IN

−55°C to +125°C operation (AD536AS)

BUF

25kΩ

BUFFER

OUT

GENERAL DESCRIPTION

80kΩ

–V

The AD536A is a complete monolithic integrated circuit that

performs true rms-to-dc conversion. It offers performance

comparable or superior to that of hybrid or modular units costing

much more. The AD536A directly computes the true rms value of

any complex input waveform containing ac and dc components.

A crest factor compensation scheme allows measurements with 1%

error at crest factors up to 7. The wide bandwidth of the device

extends the measurement capability to 300 kHz with less than 3 dB

errors for signal levels greater than 100 m V.

Figure 1.

The AD536A is available in two accuracy grades (J and K) for

commercial temperature range (0°C to 70°C) applications, and

one grade (S) rated for the −55°C to +125°C extended range.

The AD536AK offers a maximum total error of 2 mV 0.2%

of reading, while the AD536AJ and AD536AS have maximum

errors of 5 mV 0.5% of reading. All three versions are available

in a hermetically sealed 14-lead DIP or a 10-pin TO-100 metal

header package. The AD536AS is also available in a 20-terminal

leadless hermetically sealed ceramic chip carrier.

An important feature of the AD536A, not previously available

in rms converters, is an auxiliary dB output pin. The logarithm

of the rms output signal is brought out to a separate pin to allow

the dB conversion, with a useful dynamic range of 60 dB. Using

an externally supplied reference current, the 0 dB level can be

conveniently set to correspond to any input level from 0.1 V to

2 V rms.

The AD536A computes the true root-mean-square level of a

complex ac (or ac plus dc) input signal and provides an equiva-

lent dc output level. The true rms value of a waveform is a more

useful quantity than the average rectified value because it relates

directly to the power of the signal. The rms value of a statistical

signal also relates to its standard deviation.

The AD536A is laser trimmed to minimize input and output offset

voltage, to optimize positive and negative waveform symmetry

(dc reversal error), and to provide full-scale accuracy at 7 V rms.

As a result, no external trims are required to achieve the rated

unit accuracy.

An external capacitor is required to perform measurements to the

fully specified accuracy. The value of this capacitor determines the

low frequency ac accuracy, ripple amplitude, and settling time.

The input and output pins are fully protected. The input circuitry

can take overload voltages well beyond the supply levels. Loss of

supply voltage with the input connected to external circuitry does

not cause the device to fail. The output is short-circuit protected.

The AD536A operates equally well from split supplies or a

single supply with total supply levels from 5 V to 36 V. With

1 mA quiescent supply current, the device is well suited for a

wide variety of remote controllers and battery-powered

instruments.

Rev. E

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rightsof third parties that may result fromits use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks andregisteredtrademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

www.analog.com

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AD536ASD/883B 替代型号

型号	品牌	替代类型	描述	数据表
AD536AJQ	ADI	类似代替	Integrated Circuit True RMS-to-DC Converter
AD637JQ	ADI	类似代替	High Precision, Wide-Band RMS-to-DC Converter
AD736JRZ	ADI	功能相似	Low Cost, Low Power, True RMS-to-DC Converter

与AD536ASD/883B相关器件

型号	品牌	获取价格	描述	数据表
AD536ASE	ADI	获取价格	Integrated Circuit True RMS-to-DC Converter
AD536ASE/883B	ADI	获取价格	Integrated Circuit True RMS-to-DC Converter
AD536ASH	ADI	获取价格	Integrated Circuit True RMS-to-DC Converter
AD536ASH/883B	ADI	获取价格	Integrated Circuit True RMS-to-DC Converter
AD536ASQ	ETC	获取价格	RMS-to-DC Converter
AD536ASQ/883B	ETC	获取价格	RMS-to-DC Converter
AD537	ADI	获取价格	Integrated Circuit Voltage-to-Frequency Converter
AD537*	ETC	获取价格	Integrated Circuit Voltage-to-Frequency Converter
AD5370	ADI	获取价格	40-Channel, 16-Bit, Serial Input, Voltage-Output DACs
AD5370BCPZ	ADI	获取价格	40-Channel, 16-Bit, Serial Input, Voltage-Output DACs

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