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AD737 Datasheet(PDF) 3 Page - Analog Devices

Part # AD737
Description  Low Cost, Low Power, True RMS-to-DC Converter
Download  8 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD737 Datasheet(HTML) 3 Page - Analog Devices

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AD737J/A
AD737K/B
Model
Conditions
Min
Typ
Max
Min
Typ
Max
Units
FREQUENCY RESPONSE
Low Impedance Input (Pin 1)
For 1% Additional Error
Sine-Wave Input
VIN = 1 mV rms
1
1
kHz
VIN = 10 mV rms
6
6
kHz
VIN = 100 mV rms
90
90
kHz
VIN = 200 mV rms
90
90
kHz
± 3 dB Bandwidth
Sine-Wave Input
VIN = 1 mV rms
5
5
kHz
VIN = 10 mV rms
55
55
kHz
VIN = 100 mV rms
350
350
kHz
VIN = 200 mV rms
460
460
kHz
POWER SUPPLY
Operating Voltage Range
+2.8, –3.2
± 5
± 16.5
+2.8, –3.2
± 5
± 16.5
V
Quiescent Current
Zero Signal
120
160
120
160
µA
VIN = 200 mV rms, No Load
Sine-Wave Input
170
210
170
210
µA
Power Down Mode Current
Pin 3 Tied to +VS
25
40
25
40
µA
TEMPERATURE RANGE
Operating, Rated Performance
Commercial (0
°C to +70°C)
AD737J
AD737K
Industrial (–40
°C to +85°C)
AD737A
AD737B
NOTES
lAccuracy is specified with the AD737 connected as shown in Figure 16 with capacitor C
C.
2Nonlinearity is defined as the maximum deviation (in percent error) from a straight line connecting the readings at 0 and 200 mV rms.
3Error vs. Crest Factor is specified as additional error for a 200 mV rms signal. C.F. = V
PEAK /V rms.
4DC offset does not limit ac resolution.
Specifications are subject to change without notice.
Specifications shown in boldface are tested on all production units at final electrical test. Results from those tests are used to calculate outgoing quality levels.
ORDERING GUIDE
Temperature
Package
Package
Model
Range
Description
Option
AD737AQ
–40
°C to +85°C Cerdip
Q-8
AD737BQ
–40
°C to +85°C Cerdip
Q-8
AD737JN
0
°C to +70°C
Plastic DIP
N-8
AD737JR
0
°C to +70°C
SOIC
SO-8
AD737JR-REEL
0
°C to +70°C
13" Tape and Reel SO-8
AD737JR-REEL7 0
°C to +70°C
7" Tape and Reel
SO-8
AD737KN
0
°C to +70°C
Plastic DIP
N-8
AD737KR
0
°C to +70°C
SOIC
SO-8
AD737KR-REEL
0
°C to +70°C
13" Tape and Reel SO-8
AD737KR-REEL7 0
°C to +70°C
7" Tape and Reel
SO-8
PIN CONFIGURATIONS
Plastic DIP (N-8), Cerdip (Q-8), SOIC (SO-8)
FULL
WAVE
RECTIFIER
INPUT
AMPLIFIER
RMS CORE
COM
+VS
OUTPUT
CAV
–VS
POWER
DOWN
VIN
CC
8k
AD737
BIAS
SECTION
8k
8
7
6
5
1
2
3
4
ABSOLUTE MAXIMUM RATINGS
1
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±16.5 V
Internal Power Dissipation2 . . . . . . . . . . . . . . . . . . . . . 200 mW
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Short-Circuit Duration . . . . . . . . . . . . . . . . . Indefinite
Differential Input Voltage . . . . . . . . . . . . . . . . . . +VS and –VS
Storage Temperature Range (Q) . . . . . . –65
°C to +150°C
Storage Temperature Range (N, R) . . . . . –65
°C to +125°C
Operating Temperature Range
AD737J/K . . . . . . . . . . . . . . . . . . . . . . . . . . . 0
°C to +70°C
AD737A/B . . . . . . . . . . . . . . . . . . . . . . . . . . –40
°C to +85°C
Lead Temperature Range (Soldering 60 sec) . . . . . . . . +300
°C
ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500 V
NOTES
1Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
28-Lead Plastic DIP Package:
θ
JA = 165
°C/W
8-Lead Cerdip Package:
θ
JA = 110
°C/W
8-Lead Small Outline Package:
θ
JA = 155
°C/W
AD737
REV. C
–3–


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