a
FEATURES
250 MHz Operation
Driver/Comparator Included
52-Lead LQFP Package with Built-in Heat Sink
High Performance Driver/Comparator
on a Single Chip
AD53033
FUNCTIONAL BLOCK DIAGRAM
V
CC
VH
47
VTERM
45
DATA
37
DATAB
38
IOD
43
IODB
42
RLD
49
RLDB
50
V
L 31
HCOMP
LEH
LEHB
QH
QHB
50
DRIVER
V
OUT
VLDCPL
VHDCPL
V
CC
V
CC
51
52
V
EE
32
V
EE
39
V
EE
40
V
EE
41
APPLICATIONS
Automatic Test Equipment
Semiconductor Test Systems
Board Test Systems
Instrumentation and Characterization Equipment
AD53033
PRODUCT DESCRIPTION
COMPARATOR
QL
QLB
LEL
LELB
LCOMP
The AD53033 is a single chip that performs the pin electronics
functions of driver and comparator (D-C) in ATE VLSI and
memory testers.
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. This facilitates the implementation of
high speed active termination. The output voltage range is 鈥? V
to +8 V to accommodate a wide variety of test devices. The
output leakage is typically less than 250 nA over the entire sig-
nal range.
The dual comparator, with an input range equal to the driver
output range, features built-in latches and ECL-compatible
outputs. The outputs are capable of driving 50
鈩?/div>
signal lines
terminated to 鈥? V. Signal tracking capability is upwards of
5 V/ns.
Also included on the chip is an onboard temperature sensor
whose purpose is to give an indication of the surface tempera-
ture of the D-C. This information can be used to measure
胃
JC
and
胃
JA
or flag an alarm if proper cooling is lost. Output from the
NC
THERM
1.0 A/K
9, 33, 44, 46, 48
2, 5, 8
PWRGND
NC = NO CONNECT
ECLGND
HQGND2
sensor is a current sink that is proportional to absolute tempera-
ture. The gain is trimmed to a nominal value of 1.0
碌A(chǔ)/K.
As
an example, the output current can be sensed by using a 10 k鈩?/div>
resistor connected from +10 V to the THERM (IOUT) pin. A
voltage drop across the resistor will be developed that equals:
10K
脳
1
碌A(chǔ)/K
= 10 mV/K = 2.98 V at room temperature.
REV. 0
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
漏 Analog Devices, Inc., 1999
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