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AD736BQZ

Description
RMS TO DC CONVERTER, 0.005MHz, CDIP8, CERAMIC, DIP-8
Categoryconverter   
File Size457KB,20 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric Compare View All

AD736BQZ Overview

RMS TO DC CONVERTER, 0.005MHz, CDIP8, CERAMIC, DIP-8

AD736BQZ Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerADI
Parts packaging codeDIP
package instructionCERAMIC, DIP-8
Contacts8
Reach Compliance Codenot_compliant
ECCN codeEAR99
Is SamacsysN
Converter typeRMS TO DC CONVERTER
JESD-30 codeR-GDIP-T8
JESD-609 codee0
Maximum linear error (EL)0.35%
Maximum negative supply voltage-16.5 V
Minimum negative supply voltage-3.2 V
Nominal negative supply voltage-5 V
Number of functions1
Number of terminals8
Maximum operating frequency0.005 MHz
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialCERAMIC, GLASS-SEALED
encapsulated codeDIP
Package shapeRECTANGULAR
Package formIN-LINE
Peak Reflow Temperature (Celsius)NOT SPECIFIED
Maximum positive input voltage1 V
Certification statusNot Qualified
Maximum seat height5.08 mm
Maximum supply voltage16.5 V
Minimum supply voltage2.8 V
Nominal supply voltage5 V
surface mountNO
Temperature levelINDUSTRIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
Maximum total error2%
width7.62 mm
Base Number Matches1
Data Sheet
FEATURES
Converts an ac voltage waveform to a dc voltage and then
converts to the true rms, average rectified, or absolute value
200 mV rms full-scale input range (larger inputs with input
attenuator)
High input impedance: 10
12
Low input bias current: 25 pA maximum
High accuracy: ±0.3 mV ± 0.3% of reading
RMS conversion with signal crest factors up to 5
Wide power supply range: +2.8 V, −3.2 V to ±16.5 V
Low power: 200 µA maximum supply current
Buffered voltage output
No external trims needed for specified accuracy
Related device: the
AD737—features
a power-down control
with standby current of only 25 μA; the dc output voltage
is negative and the output impedance is 8 kΩ
Low Cost, Low Power,
True RMS-to-DC Converter
AD736
FUNCTIONAL BLOCK DIAGRAM
CC 8kΩ
+VS
OUT
VIN
FULL WAVE
RECTIFIER
RMS
CORE
8kΩ
CF
CAV
CF
(OPT)
BIAS
SECTION
COM
–VS
CAV
Figure 1.
The AD736 allows the choice of two signal input terminals: a
high impedance FET input (10
12
Ω) that directly interfaces with
High-Z input attenuators and a low impedance input (8 kΩ) that
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 can be used either single ended or differentially.
The AD736 has a 1% reading error bandwidth that exceeds
10 kHz for the input amplitudes from 20 mV rms to 200 mV rms
while consuming only 1 mW.
The AD736 is available in four performance grades. The
AD736J and AD736K grades are rated over the 0°C to +70°C
and −20°C to +85°C commercial temperature ranges. The
AD736A and AD736B grades are rated over the −40°C to +85°C
industrial temperature range. The AD736 is available in three
low cost, 8-lead packages: PDIP, SOIC, and CERDIP.
GENERAL DESCRIPTION
The 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. Furthermore,
it maintains high accuracy while measuring a wide range of
input waveforms, including variable duty-cycle pulses and triac
(phase)-controlled sine waves. The low cost and small size of
this converter make it suitable for upgrading the performance
of non-rms precision rectifiers in many applications. Compared
to these circuits, the AD736 offers higher accuracy at an equal
or lower cost.
The AD736 can compute the rms value of both ac and dc input
voltages. It can also be operated as an ac-coupled device by
adding one external capacitor. In this mode, the AD736 can
resolve input signal 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 (introducing only 2.5%
additional error) at the 200 mV full-scale input level.
The AD736 has its own output buffer amplifier, thereby pro-
viding a great deal of design flexibility. Requiring only 200 µA
of power supply current, the AD736 is optimized for use in
portable multimeters and other battery-powered applications.
PRODUCT HIGHLIGHTS
1. The 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. The low power consumption of 1 mW makes the AD736
suitable for many battery-powered applications.
4. A high input impedance of 10
12
Ω eliminates the need for an
external buffer when interfacing with input attenuators.
5. A low impedance input is available for those applications that
require an input signal up to 300 mV rms operating from low
power supply voltages.
Rev. I
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 registered trademarks 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
Fax: 781.461.3113 ©1988–2012 Analog Devices, Inc. All rights reserved.
00834-001

AD736BQZ Related Products

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Description RMS TO DC CONVERTER, 0.005MHz, CDIP8, CERAMIC, DIP-8 RMS TO DC CONVERTER, 0.005MHz, PDSO8, MS-012AA, SOIC-8 RMS TO DC CONVERTER, 0.005MHz, CDIP8, CERAMIC, DIP-8 IC RMS TO DC CONVERTER, 0.005 MHz, PDSO8, MS-012AA, SOIC-8, Analog Special Function Converter RMS TO DC CONVERTER, 0.005MHz, PDSO8, MS-012AA, SOIC-8 RMS TO DC CONVERTER, 0.005MHz, PDSO8, MS-012AA, SOIC-8
Is it lead-free? Contains lead Contains lead Contains lead Contains lead Contains lead Contains lead
Is it Rohs certified? incompatible conform to incompatible incompatible conform to conform to
Maker ADI ADI ADI ADI ADI ADI
Parts packaging code DIP SOIC DIP SOIC SOIC SOIC
package instruction CERAMIC, DIP-8 MS-012AA, SOIC-8 CERAMIC, DIP-8 MS-012AA, SOIC-8 SOP, SOP,
Contacts 8 8 8 8 8 8
Reach Compliance Code not_compliant compliant not_compliant compliant compliant compliant
Converter type RMS TO DC CONVERTER RMS TO DC CONVERTER RMS TO DC CONVERTER RMS TO DC CONVERTER RMS TO DC CONVERTER RMS TO DC CONVERTER
JESD-30 code R-GDIP-T8 R-PDSO-G8 R-GDIP-T8 R-PDSO-G8 R-PDSO-G8 R-PDSO-G8
JESD-609 code e0 e3 e0 e0 e3 e3
Maximum linear error (EL) 0.35% 0.35% 0.35% 0.35% 0.35% 0.35%
Maximum negative supply voltage -16.5 V -16.5 V -16.5 V -16.5 V -16.5 V -16.5 V
Minimum negative supply voltage -3.2 V -3.2 V -3.2 V -3.2 V -3.2 V -3.2 V
Nominal negative supply voltage -5 V -5 V -5 V -5 V -5 V -5 V
Number of functions 1 1 1 1 1 1
Number of terminals 8 8 8 8 8 8
Maximum operating frequency 0.005 MHz 0.005 MHz 0.005 MHz 0.005 MHz 0.005 MHz 0.005 MHz
Maximum operating temperature 85 °C 70 °C 85 °C 85 °C 85 °C 70 °C
Minimum operating temperature -40 °C - -40 °C -40 °C -40 °C -
Package body material CERAMIC, GLASS-SEALED PLASTIC/EPOXY CERAMIC, GLASS-SEALED PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code DIP SOP DIP SOP SOP SOP
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form IN-LINE SMALL OUTLINE IN-LINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE
Peak Reflow Temperature (Celsius) NOT SPECIFIED 260 NOT SPECIFIED 240 240 260
Maximum positive input voltage 1 V 1 V 1 V 1 V 1 V 1 V
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height 5.08 mm 1.75 mm 5.08 mm 1.75 mm 1.75 mm 1.75 mm
Maximum supply voltage 16.5 V 16.5 V 16.5 V 16.5 V 16.5 V 16.5 V
Minimum supply voltage 2.8 V 2.8 V 2.8 V 2.8 V 2.8 V 2.8 V
Nominal supply voltage 5 V 5 V 5 V 5 V 5 V 5 V
surface mount NO YES NO YES YES YES
Temperature level INDUSTRIAL COMMERCIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL COMMERCIAL
Terminal surface Tin/Lead (Sn/Pb) Matte Tin (Sn) Tin/Lead (Sn/Pb) TIN LEAD Matte Tin (Sn) Matte Tin (Sn)
Terminal form THROUGH-HOLE GULL WING THROUGH-HOLE GULL WING GULL WING GULL WING
Terminal pitch 2.54 mm 1.27 mm 2.54 mm 1.27 mm 1.27 mm 1.27 mm
Terminal location DUAL DUAL DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED
Maximum total error 2% 2% 2% 2% 2% 2%
width 7.62 mm 3.9 mm 7.62 mm 3.9 mm 3.9 mm 3.9 mm
ECCN code EAR99 EAR99 EAR99 - EAR99 EAR99
length - 4.9 mm - 4.9 mm 4.9 mm 4.9 mm
Humidity sensitivity level - 1 - 1 1 1

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