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AD637JRZ-R7 数据表(PDF) 4 Page - Analog Devices

部件名 AD637JRZ-R7
功能描述  High Precision, Wideband RMS-to-DC Converter
PDF  20 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) 4 Page - Analog Devices

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AD637
Rev. K | Page 4 of 20
AD637J/AD637A
AD637K/AD637B
AD637S
Parameter
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
Unit
OUTPUT CHARACTERISTICS
Offset Voltage
±1
±0.5
±1
mV
vs. Temperature
±0.05
±0.089
±0.04
±0.056
±0.04
±0.07
mV/°C
Voltage Swing,
±15 V Supply, 2 kΩ Load
0 to 12.0
13.5
0 to 12.0
13.5
0 to 12.0
13.5
V
Voltage Swing,
±3 V Supply, 2 kΩ Load
0 to 2
2.2
0 to 2
2.2
0 to 2
2.2
V
Output Current
6
6
6
mA
Short-Circuit Current
20
20
20
mA
Resistance
Chip Select High
0.5
0.5
0.5
Ω
Resistance
Chip Select Low
100
100
100
kΩ
dB OUTPUT
Error, VIN 7 mV to 7 V rms,
0 dB = 1 V rms
±0.5
±0.3
±0.5
dB
Scale Factor
−3
−3
−3
mV/dB
Scale Factor Temperature
Coefficient
+0.33
+0.33
+0.33
% of
reading/°C
−0.033
−0.033
−0.033
dB/°C
IREF for 0 dB = 1 V rms
5
20
80
5
20
80
5
20
80
μA
IREF Range
1
100
1
100
1
100
μA
BUFFER AMPLIFIER
Input Output
Voltage Range
−VS to (+VS − 2.5 V)
−VS to (+VS − 2.5 V)
−VS to (+VS − 2.5 V)
V
Input Offset Voltage
±0.8
±2
±0.5
±1
±0.8
±2
mV
Input Current
±2
±10
±2
±5
±2
±10
nA
Input Resistance
108
108
108
Ω
Output Current
−0.13
+5
−0.13
+5
−0.13
+5
mA
Short-Circuit Current
20
20
20
mA
Small Signal Bandwidth
1
1
1
MHz
Slew Rate6
5
5
5
V/μs
DENOMINATOR INPUT
Input Range
0 to 10
0 to 10
0 to 10
V
Input Resistance
20
25
30
20
25
30
20
25
30
kΩ
Offset Voltage
±0.2
±0.5
±0.2
±0.5
±0.2
±0.5
mV
CHIP SELECT (CS)
RMS On Level
Open or 2.4 V < VC < +VS
Open or 2.4 V < VC < +VS
Open or 2.4 V < VC < +VS
RMS Off Level
VC < 0.2 V
VC < 0.2 V
VC < 0.2 V
IOUT of Chip Select
CS Low
10
10
10
μA
CS High
0
0
0
μA
On Time Constant
10 + ((25 kΩ) × CAV)
10 + ((25 kΩ) × CAV)
10 + ((25 kΩ) × CAV)
μs
Off Time Constant
10 + ((25 kΩ) × CAV)
10 + ((25 kΩ) × CAV)
10 + ((25 kΩ) × CAV)
μs
POWER SUPPLY
Operating Voltage Range
±3.0
±18
±3.0
±18
±3.0
±18
V
Quiescent Current
2.2
3
2.2
3
2.2
3
mA
Standby Current
350
450
350
450
350
450
μA
1 Specifications shown in bold are tested on all production units at final electrical test. Results from those tests are used to calculate outgoing quality levels.
All minimum and maximum specifications are guaranteed, although only those shown in boldface are tested on all production units.
2 Accuracy specified 0 V rms to 7 V rms dc with AD637 connected, as shown in
.
Figure 5
3 Nonlinearity is defined as the maximum deviation from the straight line connecting the readings at 10 mV and 2 V.
4 Error vs. crest factor is specified as additional error for 1 V rms.
5 Input voltages are expressed in volts rms. Percent is in % of reading.
6 With external 2 kΩ pull-down resistor tied to −VS.



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