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AD53522JSQ
High Speed Dual Pin Electronic
REV.A
High Speed
Dual Pin Electronic
FUNCTIONAL BLOCK DIAGRAM (One-Half)
VCCVCCVCCVEEVEEVEE
VHDCPL
OUT
VLDCPL
PWRGND
HQGND
VCOM_S
THERM*
VTERM
DATA
IOD
RLD
HCOMP
VCCO
LCOMP
VCOM
IOLC
IOXRTN
INHL
IOHC
VCL
VCH
PROT_HI
PROT_LO
PWRD
GND_ROTDR_GNDTHERMSTART
*ONLY 1 (ONE) THERM PER DEVICE
INHLB
QLB
QHB
RLDB
IODB
DATAB
FEATURES
1000 MHz Toggle Rate
Driver/Comparator/Active Load and Dynamic Clamp
Included
Inhibit Mode Function
100-Lead LQFP Package with Built-In Heat Sink
Driver
48 � Output Resistance
800 ps Tr/Tf for a 3 V Step
Comparator
1.1 ns Propagation Delay at 3 V
Load�40 mA Voltage Programmable Current Range
50 ns Settling Time to 15 mV
APPLICATIONS
Automatic Test Equipment
Semiconductor Test Systems
Board Test Systems
Instrumentation and Characterization Equipment
PRODUCT DESCRIPTIONThe AD53522 is a complete, high speed, single-chip solution
that performs the pin electronics functions of driver, comparator,
and active load (DCL) for ATE applications. In addition, the
driver contains a dynamic clamp function and the active load
contains an integrated Schottky diode bridge.
The driver is a proprietary design that features three active states:
Data High mode, Data Low mode, and Term mode, as well as
an Inhibit State. In conjunction with the integrated dynamic
clamp, this facilitates the implementation of a high speed active
termination. The output voltage range is –0.5V to +6.5V to
accommodate a wide variety of test devices.
The dual comparator, with an input range equal to the driver
output range, features PECL compatible outputs. Signal tracking
capability is in the range of 3 V/ns.
The active load can be set for up to 40 mA load current. IOH, IOL,
and the buffered VCOM are independently adjustable. On-board
Schottky diodes provide high speed switching and low capacitance.
Also included is an on-board temperature sensor that gives an
indication of the silicon surface temperature of the DCL. This
information can be used to measure �JC and �JA or flag an alarm
if proper cooling is lost. Output from the sensor is a current sink
that is proportional to absolute temperature. The gain is trimmed
to a nominal value of 1.0 µA/K. As an example, the output current
can be sensed by using a 10 kΩ resistor connected from 10V to
the THERM (IOUT) pin. A voltage drop across the resistor will
be developed that equals 10 kΩ � 1 µA/°K = 10mV/°K=2.98V
at room temperature.
AD53522–SPECIFICATIONS
DRIVER1(TJ = 85�C � 5�C, +VS = +10.5 V � 1%, –VS = –4.5 V � 1%, VCCO = 3.3 V, unless otherwise noted.)AD53522
DRIVER1(continued)93A
130
AD53522
SPECIFICATIONS(continued)
DRIVER1(continued)191A
191B
192A
192B
AD53522
COMPARATOR1302
AD53522
SPECIFICATIONS(continued)
ACTIVE LOAD1361
