AD637 查看數據表（PDF） - Analog Devices
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AD637 Datasheet PDF : 10 Pages
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AD637
NOTES
1Accuracy specified 0-7 V rms dc with AD637 connected as shown in Figure 2.
2Nonlinearity is defined as the maximum deviation from the straight line connecting the readings at 10 mV and 2 V.
3Error vs. crest factor is specified as additional error for 1 V rms.
4Input voltages are expressed in volts rms. % are in % of reading.
5With external 2 kΩ pull down resistor tied to –VS.
Specifications 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. All min
and max specifications are guaranteed, although only those shown in boldface are tested on all production units.
ABSOLUTE MAXIMUM RATINGS
ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500 V
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 18 V dc
Internal Quiescent Power Dissipation . . . . . . . . . . . . 108 mW
Output Short-Circuit Duration . . . . . . . . . . . . . . . . . Indefinite
Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C
Lead Temperature Range (Soldering 10 secs) . . . . . . . +300°C
Rated Operating Temperature Range
AD637J, K . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to +70°C
AD637A, B . . . . . . . . . . . . . . . . . . . . . . . . –40°C to +85°C
AD637S, 5962-8963701CA . . . . . . . . . . . –55°C to +125°C
ORDERING GUIDE
Model
Temperature
Range
Package
Description
Package
Option
AD637AR
–40°C to +85°C SOIC
R-16
AD637BR
–40°C to +85°C SOIC
R-16
AD637AQ
–40°C to +85°C Cerdip
Q-14
AD637BQ
–40°C to +85°C Cerdip
Q-14
AD637JD
0°C to +70°C Side Brazed Ceramic DIP D-14
AD637JD/+
0°C to +70°C Side Brazed Ceramic DIP D-14
AD637KD
0°C to +70°C Side Brazed Ceramic DIP D-14
AD637KD/+
0°C to +70°C Side Brazed Ceramic DIP D-14
AD637JQ
0°C to +70°C Cerdip
Q-14
AD637KQ
0°C to +70°C Cerdip
Q-14
AD637JR
0°C to +70°C SOIC
R-16
AD637JR-REEL 0°C to +70°C SOIC
R-16
AD637JR-REEL7 0°C to +70°C SOIC
R-16
AD637KR
0°C to +70°C SOIC
R-16
AD637SD
–55°C to +125°C Side Brazed Ceramic DIP D-14
AD637SD/883B –55°C to +125°C Side Brazed Ceramic DIP D-14
AD637SQ/883B –55°C to +125°C Cerdip
Q-14
AD637SCHIPS 0°C to +70°C Die
5962-8963701CA* –55°C to +125°C Cerdip
Q-14
*A standard microcircuit drawing is available.
BUFF OUT
BUFF IN
FILTER/AMPLIFIER
ONE QUADRANT
24k⍀
SQUARER/DIVIDER
BUFFER
A5
AMPLIFIER
I4
A4
24k⍀
I1
ABSOLUTE VALUE VOLTAGE –
CURRENT CONVERTER
6k⍀
12k⍀
VIN
A1
6k⍀
A2
Q4
Q1
Q2 Q3
A3
Q5
BIAS
I3 24k⍀
125⍀
AD637
CAV
+VS
RMS
OUT
dB
OUT
COM
CS
DEN
INPUT
OUTPUT
OFFSET
–VS
Figure 1. Simplified Schematic
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD637 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE
REV. E
–3–
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