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PDF AD5520 Data sheet ( Hoja de datos )
| Número de pieza | AD5520 | |
| Descripción | Per Pin Parametric Measurement Unit/Source Measure Unit | |
| Fabricantes | Analog Devices | |
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Per Pin Parametric
Measurement Unit/Source Measure Unit
AD5520
FEATURES
Force/Measure Functions
Force Voltage/Current, Measure Current/Voltage
Force Current/Voltage, Measure Current/Voltage
Force/Measure Voltage Range ؎11 V
4 Programmable Force/Measure Current Ranges
؎4 A, ؎40 A, ؎400 A, ؎4 mA
Extended Current Ranges
؎40 mA and ؎160 mA with External Driver
Clamp Circuitry and Window Comparators On Board
Guard Amplifier
64-Lead LQFP Package
APPLICATIONS
Automatic Test Equipment
Per Pin PMU, Shared Pin PMU, Device Power Supply
Instrumentation
Source Measure, Parametric Measurement, Precision
Measurement
GENERAL DESCRIPTION
The AD5520 is a single channel per pin parametric measure-
ment unit (PPMU) for use in semiconductor automatic test
equipment. The part is also suited for use as a source
measurement unit for instrumentation applications. It
contains programmable modes to force a pin voltage and
measure the corresponding current or force a current and
measure the voltage. The AD5520 can force/measure over a
± 11 V range or currents up to ± 4 mA with its on-board
force amplifier. An external amplifier is required for wider
current ranges. The device provides a force sense capability to
ensure accuracy at the tester pin. A guard output is also
available to drive the shield of a force/sense pair. The AD5520
is available in a 64-lead LQFP package.
FUNCTIONAL BLOCK DIAGRAM
REV. A
AD5520
FIN
CLH
CLL
REFGND
MEASIOUT
MEASOUT
MEASVOUT
COMPARATOR
CPH
CPOH
CPOH
CPL
CPCK
AVEE AVCC
BW SELECT
CLAMP
DETECT
G = 16
ISENSE
INST AMP
VSENSE
INST AMP
G=1
LOGICS
FOH
FOH3
FOH2
FOH1
FOH0
MEASI5H
MEASI4H
MEASI3H
MEASI2H
MEASI1H
MEASI0H
MEASIL
GUARDIN
G=1
GUARD
MEASVH
MEASVL
AGND
QM5
QM4
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703 © 2003 Analog Devices, Inc. All rights reserved.
1 page  
AD5520
ABSOLUTE MAXIMUM RATINGS*
(TA = 25°C, unless otherwise noted.)
AVCC to AVEE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 V
AVCC to AGND . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, +17 V
AVEE to AGND . . . . . . . . . . . . . . . . . . . . . . . . . +0.3 V, –17 V
DVDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +6 V
Digital Inputs to DGND . . . . . . . . . . –0.3 V to DVDD + 0.3 V
Analog Inputs to AGND . . . . . AVCC + 0.3 V to AVEE – 0.3 V
CLH to CLL . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +34 V
CPH to CPL . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +34 V
REFGND, DGND . . . . . . . . . AVCC + 0.3 V to AVEE – 0.3 V
Operating Temperature Range
Commercial (J Version) . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C
Maximum Junction Temperature, (TJ max) . . . . . . . . . 150°C
Package Power Dissipation . . . . . . . . . . . . . (TJ max – TA)/JA
Thermal Impedance JA . . . . . . . . . . . . . . . . . . . . . . 47.8°C/W
Lead Temperature (Soldering 10 sec) . . . . . . . . . . . . . . 300°C
IR Reflow, Peak Temperature . . . . . . . . . . . . . . . . . . . . 220°C
*Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those listed in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
ORDERING GUIDE
Model
AD5520JST
AD5520JST-REEL
EVAL-AD5520EB
Temperature Range
0°C to 70°C
0°C to 70°C
Package Description
64-Lead LQFP
64-Lead LQFP
Evaluation Board and Software
Package Option
ST-64-2
ST-64-2
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although the
AD5520 features proprietary ESD protection circuitry, permanent damage may occur on devices
subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended
to avoid performance degradation or loss of functionality.
REV. A
–5–
5 Page 
AD5520
THEORY OF OPERATION
The AD5520 is a single channel per pin parametric measurement
unit (PPMU) for use in semiconductor automatic test equip-
ment. It contains programmable modes to force a pin voltage and
measure the corresponding current (FVMI), force current mea-
sure voltage (FIMV), force current measure current (FIMI), and
force voltage measure voltage (FVMV). The PPMU can force or
measure a voltage from –11 V to +11 V. It can force or measure a
current over four ranges: 4 µA, 40 µA, 400 µA, and 4 mA. The
addition of an external driver allows two extended ranges.
The device provides a force sense capability to ensure accuracy
at the tester pin. A guard output is also available to drive the
shield of a force/sense pair.
The AD5520 has an on-board window comparator that pro-
vides two bits of useful information, DUT too low or too high.
Also provided on the chip is clamp circuitry that will flag via
CLHDETECT and CLLDETECT if the voltage applied to
FIN or across the DUT has exceeded the voltage applied to
CLL and CLH.
On chip is clamp circuitry that clamps the output of the force
amplifier if the voltage at MEASIOUT and MEASVOUT
exceeds CLL and CLH.
INTERFACE
The AD5520 PPMU is controlled via a number of digital inputs,
which are discussed in detail in the following sections. All inputs
are TTL compatible. CS is used to select the device while STB
(active low input) latches data available on the other digital inputs
and updates any required digital outputs. The rising edge of STB
triggers sequence inputs. The remaining digital inputs control the
function of the PMU—which measure mode it is in, which com-
pensation capacitor is used, and the selected current range.
Standby Mode
The AD5520 may be placed into standby mode via the standby
logic input. In this mode, the force amplifier is disconnected from
the force input (FIN), the switch in series with the force output
pins, FOHx, is opened, and the current measure amplifier is dis-
connected from the sense resistors. The voltage measure amplifier
is still connected across the DUT, so DUT voltage measure-
ments may still be made while in standby mode. Figure 3 shows
the configuration of the PMU while in standby mode.
Table I. Standby Mode
STANDBY
Low
High
Function
Normal Force Mode
Standby Mode
DAC
FIN
FOHx
MEASIOUT
MEASVOUT
G = 16
G=1
MEASIHx
MEASIL
MEASVH
MEASVL
RS
DUT
Figure 3. PMU in Standby Mode
Force Voltage or Force Current
FSEL is an input that determines whether the PPMU forces a
voltage or current.
FSEL
Low
High
Table II. FSEL Function
Function
Voltage Force and Current Clamp with
MEASIOUT Voltage
Current Force and Voltage Clamp with
MEASVOUT Voltage
Measured Parameter
MEASOUT is a muxed output that tracks the sensed parameter,
MSEL connects it to the output of either the current sense
amplifier or the voltage sense amplifier, depending on which is
the measured parameter of interest.
The MEASOUT pin will be connected back to an ADC to
allow the measured value to be converted to a digital code.
Table III. MEASOUT Connected to
Voltage or Current
MSEL
Low
High
Function
MEASOUT = DUT Voltage
MEASOUT = DUT Current
The MEASOUT pin may also be made high impedance through
the MOEB logic input.
Table IV. MOEB Allows MEASOUT
to Go High Impedance
MOEB
Low
High
Function
Enable MEASOUT Output
Hi-Z MEASOUT Output
REV. A
–11–
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet AD5520.PDF ] | |
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