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AD8362-EVAL Datasheet(Fiches technique) 7 Page - Analog Devices

Numéro de pièce AD8362-EVAL
Description  50 Hz to 2.7 GHz 60 dB TruPwr™ Detector
Télécharger  36 Pages
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
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AD8362
Rev. B | Page 7 of 36
PIN CONFIGURATION AND FUNCTION DESCRIPTION
TOP VIEW
(Not to Scale)
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
COMM
CHPF
DECL
INHI
INLO
DECL
PWDN
COMM
ACOM
VREF
VTGT
VPOS
VOUT
VSET
ACOM
CLPF
AD8362
Figure 2. Pin Configuration
Table 3. Pin Function Descriptions
Pin
No.
Mnemonic
Description
Equivalent
Circuit
1, 8
COMM
Common Connection. Connect via low impedance to system common.
2
CHPF
Input HPF. Connect to common via a capacitor to determine 3 dB point of input signal high-pass filter.
3, 6
DECL
Decoupling Terminals for INHI and INLO. Connect to common via a large capacitance to complete
input circuit.
4
INHI
High Signal Input Terminal. Part of a differential input port with INLO.
Circuit A
5
INLO
Low Signal Input Terminal. Part of a differential input port with INHI.
Circuit A
7
PWDN
Disable/Enable Control Input. Apply logic high voltage to shut down the AD8362.
9
CLPF
Connection for loop filter integration (averaging) capacitor, the other pin of which is usually
grounded via a resistor to improve loop stability and response time.
10, 16
ACOM
Analog Common Connection for Output Amplifier.
11
VSET
The voltage applied to this pin sets the decibel value of the required RF input voltage that results in
zero current out of CLPF and thus the loop integrating capacitor.
Circuit B
12
VOUT
Output of Error Amplifier. In measurement mode, normally connected directly to VSET.
Circuit C
13
VPOS
Connect to 5 V Power Supply.
14
VTGT
The logarithmic intercept voltage is proportional to the voltage applied to this pin. The use of a lower
target voltage increases the crest factor capacity.
Circuit D
15
VREF
General-Purpose Reference Voltage Output of 1.25 V (usually connected only to VTGT).
Circuit E




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