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AD637JRZ-R7 数据表(PDF) 8 Page - Analog Devices

部件名 AD637JRZ-R7
功能描述  High Precision, Wideband RMS-to-DC Converter
PDF  25 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD637JRZ-R7 数据表(HTML) 8 Page - Analog Devices

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AD637
Data Sheet
Rev. L | Page 8 of 25
Table 3.
Parameter
Test Conditions/Comments
AD637S
Unit
Min
Typ
Max
TRANSFER FUNCTION
VOUT =
2
IN )
(V
avg 
CONVERSION ACCURACY
Total Error, Internal Trim
See Figure 5
±1 ± 0.5
mV rms ±% of reading
TMIN to TMAX
±6 ± 0.7
mV ± % of reading
vs. Supply
VIN = 300 mV
30
150
μV/V
VIN = −300 mV
100
300
μV/V
DC Reversal
−2 V < VIN < +2 V
0.25
% of reading
Nonlinearity
2 V full scale
0.04
% of FSR
7 V full scale
0.05
% of FSR
Total Error
External trim
±0.5 ± 0.1
mV ± % of reading
ERROR VS. CREST FACTOR (CF)
Additional, at 1 V rms
CF, %
For CF = 1 to 2
Specified accuracy
For CF = 3
±0.1
% of reading
For CF = 10
±1.0
% of reading
AVERAGING TIME CONSTANT
25
ms/μF CAV
INPUT CHARACTERISTICS
Signal Range
VS = ±15 V
Continuous
0 to 7
V rms
Transient
±15
V p-p
VS = ±5 V
Continuous
0 to 4
V rms
Transient
±6
V p-p
Input Resistance
6.4
8
9.6
kΩ
Input Offset Voltage
±0.5
mV
FREQUENCY RESPONSE
Bandwidth for 1% (0.09 dB) Additional Error
VIN = 20 mV
11
kHz
VIN = 200 mV
66
kHz
VIN = 2 V
200
kHz
±3 dB
VIN = 20 mV
150
kHz
VIN = 200 mV
1
MHz
VIN = 2 V
8
MHz
OUTPUT CHARACTERISTICS
Offset Voltage
±1
mV
vs. temperature
±0.04
±0.07
mV/°C
Voltage Swing, 2 kΩ load
0 to 12.0
13.5
V
VS = ±3 V
0 to 2
2.2
V
Output Current
6
mA
Short-Circuit Current
20
mA
Resistance
CS high
0.5
Ω
Resistance
CS low
100
kΩ
dB OUTPUT
Error
VIN = 7 mV to 7 V rms, 0 dBV
±0.5
dBV
Scale Factor
−3
mV/dB
Scale Factor Tempco
+0.33
% of reading/°C
−0.033
dB/°C
IREF for 0 dB = 1 V rms
5
20
80
μA
IREF Range
1
100
μA



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