AD736JRZ

更新时间： 2024-11-23 04:04:15

品牌	Logo	应用领域
亚德诺 - ADI		转换器
页数	文件大小	规格书
8页	220K
描述
Low Cost, Low Power, True RMS-to-DC Converter

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AD736JRZ 数据手册

Low Cost, Low Power,

True RMS-to-DC Converter

AD736

FUNCTIO NAL BLO CK D IAGRAM

FEATURES

COMPUTES

True RMS Value

Average Rectified Value

Absolute Value

PROVIDES

200 m V Full-Scale Input Range

(Larger Inputs w ith Input Attenuator)

High Input Im pedance of 10¹²

⍀

Low Input Bias Current: 25 pA m ax

High Accuracy: ؎0.3 m V ؎0.3% of Reading

RMS Conversion w ith Signal Crest Factors Up to 5

Wide Pow er Supply Range: +2.8 V, –3.2 V to ؎16.5 V

Low Pow er: 200 ␮A m ax Supply Current

Buffered Voltage Output

No External Trim s Needed for Specified Accuracy

AD737—An Unbuffered Voltage Output Version w ith

Chip Pow er Dow n Is Also Available

which allows the measurement of 300 mV input levels, while

operating from the minimum power supply voltage of +2.8 V,

–3.2 V. The two inputs may be used either singly or differentially.

T he AD736 achieves a 1% of reading error bandwidth exceeding

10 kHz for input amplitudes from 20 mV rms to 200 mV rms

while consuming only 1 mW.

P RO D UCT D ESCRIP TIO N

T he AD736 is a low power, precision, monolithic true

rms-to-dc converter. It is laser trimmed to provide a maximum

error of ±0.3 mV ±0.3% of reading with sine-wave inputs. Fur-

thermore, it maintains high accuracy while measuring a wide

range of input waveforms, including variable duty cycle pulses

and triac (phase) controlled sine waves. T he low cost and small

physical size of this converter make it suitable for upgrading the

performance of non-rms “precision rectifiers” in many applica-

tions. Compared to these circuits, the AD736 offers higher ac-

curacy at equal or lower cost.

T he AD736 is available in four performance grades. T he

AD736J and AD736K grades are rated over the commercial tem-

perature range of 0°C to +70°C. T he AD736A and AD736B

grades are rated over the industrial temperature range of –40°C

to +85°C.

T he AD736 is available in three low-cost, 8-pin packages: plastic

mini-DIP, plastic SO and hermetic cerdip.

T he AD736 can compute the rms value of both ac and dc input

voltages. It can also be operated ac coupled by adding one ex-

ternal capacitor. In this mode, the AD736 can resolve input sig-

nal levels of 100 µV rms or less, despite variations in

temperature or supply voltage. High accuracy is also maintained

for input waveforms with crest factors of 1 to 3. In addition,

crest factors as high as 5 can be measured (while introducing

only 2.5% additional error) at the 200 mV full-scale input level.

P RO D UCT H IGH LIGH TS

1. T he AD736 is capable of computing the average rectified

value, absolute value or true rms value of various input

signals.

2. Only one external component, an averaging capacitor, is

required for the AD736 to perform true rms measurement.

3. T he low power consumption of 1 mW makes the AD736

suitable for many battery powered applications.

4. A high input impedance of 10¹²

T he AD736 has its own output buffer amplifier, thereby provid-

ing a great deal of design flexibility. Requiring only 200 µA of

power supply current, the AD736 is optimized for use in por-

table multimeters and other battery powered applications.

Ω eliminates the need for an

external buffer when interfacing with input attenuators.

5. A low impedance input is available for those applications

requiring up to 300 mV rms input signal operating from low

power supply voltages.

T he AD736 allows the choice of two signal input terminals: a

high impedance (10¹²Ω) FET input which will directly interface

with high Z input attenuators and a low impedance (8 kΩ) input

REV. C

Inform ation furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assum ed by Analog Devices for its

use, nor for any infringem ents of patents or other rights of third parties

which m ay result from its use. No license is granted by im plication or

otherwise under any patent or patent rights of Analog Devices.

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

Tel: 617/ 329-4700

Fax: 617/ 326-8703

12 3 4 5 6 7 8

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AD736JRZ 替代型号

型号	品牌	替代类型	描述	数据表
AD736JR-REEL7	ADI	完全替代	Low Cost, Low Power, True RMS-to-DC Converter
AD736KRZ-R7	ADI	完全替代	Low Cost, Low Power, True RMS-to-DC Converter
AD736JRZ-RL	ADI	完全替代	Low Cost, Low Power, True RMS-to-DC Converter

与AD736JRZ相关器件

型号	品牌	获取价格	描述	数据表
AD736JRZ-R7	ADI	获取价格	Low Cost, Low Power, True RMS-to-DC Converter
AD736JRZ-RL	ADI	获取价格	Low Cost, Low Power, True RMS-to-DC Converter
AD736KN	ADI	获取价格	Low Cost, Low Power, True RMS-to-DC Converter
AD736KNZ	ADI	获取价格	Low Cost, Low Power, True RMS-to-DC Converter
AD736KR	ADI	获取价格	Low Cost, Low Power, True RMS-to-DC Converter
AD736KR-REEL	ADI	获取价格	Low Cost, Low Power, True RMS-to-DC Converter
AD736KR-REEL-7	ADI	获取价格	Low Cost, Low Power, True RMS-to-DC Converter
AD736KRZ	ADI	获取价格	Low Cost, Low Power, True RMS-to-DC Converter
AD736KRZ-R7	ADI	获取价格	Low Cost, Low Power, True RMS-to-DC Converter
AD736KRZ-REEL7	ADI	获取价格	IC RMS TO DC CONVERTER, 0.005 MHz, PDSO8, MS-012AA, SOIC-8, Analog Special Function Conver

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