Datasheet > AD8436ACPZ-RL

AD8436ACPZ-RL

更新时间： 2024-11-21 07:18:51

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
20页	742K
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Low Cost, Low Power

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AD8436ACPZ-RL 数据手册

Low Cost, Low Power,

True RMS-to-DC Converter

AD8436

FEATURES

FUNCTIONAL BLOCK DIAGRAM

CAVG CCF

Computes true rms value instantly

Accuracy: 10 μV 0.5% of reading

Wide dynamic input range

100 μV rms to 3 V rms (8.5 V p-p) full-scale input range

Larger inputs with external scaling

Wide bandwidth:

VCC

100kΩ

SUM

IGND

100kΩ

8kΩ

RMS CORE

RMS

VEE

OGND

OUT

1 MHz for −3 dB (300 mV)

65 kHz for additional 1% error

16kΩ

10pF

Zero converter dc output offset

No residual switching products

Specified at 300 mV rms input

Accurate conversion with crest factors up to 10

Low power: 300 µA typical at 2.4 V

Fast settling at all input levels

10kΩ

IBUFGN

IBUFIN–

IBUFIN+

–

FET OP AMP

IBUFOUT

High-Z FET separately powered input buffer

OBUFIN+

OBUFIN–

–

DC BUFFER

OBUFOUT

_IN≥ 10¹²Ω, C_IN≤ 2 pF

16kΩ

Precision dc output buffer

Wide supply range

AD8436

Figure 1.

Dual: 2.4 V to 18 V

Single: 4.8 V to 36 V

Small size: 4 mm × 4 mm package

ESD protected

GENERAL DESCRIPTION

The AD8436 is a new generation, translinear precision, low power,

true rms-to-dc converter that is loaded with options. It computes

a precise dc equivalent of the rms value of ac waveforms, including

complex patterns such as those generated by switchmode power

supplies and triacs. Its accuracy spans a wide range of input levels

(see Figure 2) and temperatures. The ensured accuracy of ≤±±.ꢀ5

and ≤1± μV output offset result from the latest Analog Devices,

Inc., technology. The crest factor error is <±.ꢀ5 for CF values

between 1 and 1±.

meters and other battery-powered applications. The precision

dc output buffer offers extremely low offset voltages, thanks to

bias current cancellation.

Unlike digital solutions, the AD8436 has no switching circuitry

limiting performance at high or low amplitudes (see Figure 2).

A usable response of <1±± μV and >3 V extends the dynamic

range with no external scaling, accommodating the most

demanding low signal conditions.

GREATER INPUT DYNAMIC RANGE

The AD8436 delivers instant true rms results at less cost than

misleading peak, averaging, or digital solutions. There is no

programming expense or processor overhead to consider, and the

4 mm × 4 mm package easily fits into those tight applications.

AD8436

∆Σ SOLUTION

On-board buffer amplifiers enable the widest range of options

for any rms-to-dc converter available, regardless of cost. For

minimal applications, only a single external averaging capacitor

is required. The built-in high impedance FET buffer provides an

interface for external attenuators, frequency compensation, or

driving low impedance loads. A matched pair of internal resistors

enables an easily configurable gain-of-two or more, extending

the usable input range even lower. The low power, precision input

buffer makes the AD8436 attractive for use in portable multi-

100µV

1mV

10mV

100mV

Figure 2. Usable Dynamic Range of the AD8436 vs. ΔΣ

The AD8436 operates from single or dual supplies of ±2.4 V

(4.8 V) to ±18 V (36 V). A and J grades are available in a compact

4 mm × 4 mm, 2±-lead chip-scale package. The operating

temperature ranges are −4±°C to 12ꢀ°C and ±°C to 7±°C.

Rev. 0

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

rights of third parties that may result from its 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 and registeredtrademarks arethe property of their respective owners.

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

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

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AD8436ACPZ-RL 替代型号

型号	品牌	替代类型	描述	数据表
AD8436ACPZ-WP	ADI	完全替代	Low Cost, Low Power

与AD8436ACPZ-RL相关器件

型号	品牌	获取价格	描述	数据表
AD8436ACPZ-WP	ADI	获取价格	Low Cost, Low Power
AD8436ARQZ	ADI	获取价格	Low Cost, Low Power, True RMS-to-DC Converter
AD8436ARQZ-R7	ADI	获取价格	Low Cost, Low Power, True RMS-to-DC Converter
AD8436ARQZ-RL	ADI	获取价格	Low Cost, Low Power, True RMS-to-DC Converter
AD8436BARQZ-RL	ADI	获取价格	Low Cost, Low Power, True RMS-to-DC Converter
AD8436BRQZ	ADI	获取价格	Low Cost, Low Power, True RMS-to-DC Converter
AD8436BRQZ-R7	ADI	获取价格	Low Cost, Low Power, True RMS-to-DC Converter
AD8436BRQZ-RL	ADI	获取价格	Low Cost, Low Power, True RMS-to-DC Converter
AD8436-EVALZ	ADI	获取价格	Low Cost, Low Power
AD8436JCPZ-R7	ADI	获取价格	Low Cost, Low Power

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