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參數(shù)資料
| 型號： | EVAL-AD5520EB |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Per Pin Parametric Measurement Unit/Source Measure Unit |
| 中文描述： | 每個引腳參數(shù)測量單元/源測量單元 |
| 文件頁數(shù)： | 15/20頁 |
| 文件大?。?/td> | 763K |
| 代理商： | EVAL-AD5520EB |
REV. A
AD5520
–15–
It is good practice to employ compact, minimum lead length
PCB layout design. Leads to the input should be as short as
possible to minimize IR drops and stray inductance.
TYPICAL CONNECTION CIRCUIT FOR THE AD5520
Figure 8 shows the AD5520 connected as it would be in a typical
application. The external components required are three com-
pensation capacitors and six sense resistors, depending on how
many ranges are required. If high current ranges > 6 mA are
C
MEASI4H
MEASI3H
MEASI2H
FIN
BW SELECT
C
FOH1
FOH0
FOH2
FOH3
AV
EE
AV
CC
CLH
CLL
REFGND
MEASIOUT
MEASOUT
MEASVOUT
CPH
CPOH
CPOH
CPL
MEASI5H
MEASIL
GUARDIN
GUARD
MEASVH
MEASVL
AGND
QM5
QM4
D
D
D
C
S
C
C
C
C
C
CLAMP
DETECT
V
INST AMP
I
INST AMP
LOGICS
A
A
C
M
A
A
A
M
F
C
S
CPCK
AD5520
COMPARATOR
125k
12.5k
1.25k
125
12.5
3.126
AD815
RELAY
< 11.5V
DUT
< 100mV
11V
MEASI1H
MEASI0H
+15V –15V
100pF
1000pF
3000pF
FOH
FORCE
AMPLIFIER
G = 16
G = 1
G = 1
Figure 8. Typical Configuration of the AD5520 as Used in an ATE Circuit
required, an external amplifier must be used with relays to switch
in the different current ranges to the DUT. Other components
are also required to make the PMU function. The PMU requires
a number of discrete voltage levels: five DAC levels for each
PMU used in the system, two levels each for the comparator
and clamps, and one voltage level for the AD5520 force input
voltage. To utilize the information gathered from the DUT, an
ADC (such as the AD7665 16-Bit ADC) must be connected to
the MEASOUT pin to convert the measured current or voltage
to the digital world for analysis.
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