AD5520JST Analog Devices Inc, AD5520JST Datasheet - Page 20

• Manufacturer Part Number: AD5520JST
• Description: IC SNGL PARAMETRIC MEASURE64LQFP
• Manufacturer: Analog Devices Inc
• Type: Per-pin Parametric Measurement Unit (PPMU)r

Specifications of AD5520JST

• Rohs Status: RoHS non-compliant
• Applications: Automatic Test Equipment
• Mounting Type: Surface Mount
• Package / Case: 64-LQFP
• Operating Temperature (min): 0C
• Operating Temperature (max): 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• For Use With: EVAL-AD5520EBZ - BOARD EVAL FOR AD5520
• Lead Free Status / RoHS Status: Not Compliant

AD5520
TYPICAL CONNECTION CIRCUIT FOR THE AD5520
Figure 26 shows the AD5520 as connected in a typical applica-
tion. The external components required are three compensation
capacitors and six sense resistors, depending on the number of
ranges required. If high current ranges >6 mA are required, an
external amplifier must be used with relays (or some form of
high current switch) to switch in the different current ranges to
the DUT. Other components are also required to make the
PMU function.
FIN
CLH
CLL
REFGND
MEASIOUT
MEASOUT
MEASVOUT
CPH
CPOH
CPOL
CPL
AD5520
COMPARATOR
CPCK
3000pF
BW SELECT
1000pF
Figure 26. Typical Configuration of the AD5520 as Used in an ATE Circuit
100pF
DETECT
AMPLIFIER
CLAMP
LOGICS
FORCE
G = 16
INST AMP
INST AMP
G = 1
V
I
SENSE
SENSE
+15V –15V
AV
EE
Rev. B | Page 20 of 24
AV
G = 1
CC
GUARDIN
MEASI5H
MEASI4H
MEASI3H
MEASI2H
MEASI1H
MEASI0H
MEASVH
MEASVL
MEASIL
GUARD
AGND
FOH3
FOH2
FOH1
FOH0
QM5
QM4
FOH
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 use the information measured at the
DUT, an ADC such as the AD7665 (a 16-bit ADC), must be
connected to the MEASOUT pin to convert the measured
current or voltage to digital for analysis.
125kΩ
12.5kΩ
1.25kΩ
DUT
≥
<±100mV
±11V
AD815
125Ω
RELAY
12.5Ω
<±11.5V
3.126Ω