High Performance Driver/Comparator
on a Single Chip
a
AD53033
FEATURES
FUNCTIONAL BLOCK DIAGRAM
250 MHz Operation
Driver/Comparator Included
52-Lead LQFP Package with Built-in Heat Sink
V
V
V
V
V
V
V
CC
CC
CC
EE
EE
EE
EE
51
52
32
39
40
41
47
VH
APPLICATIONS
AD53033
VTERM 45
Automatic Test Equipment
Semiconductor Test Systems
Board Test Systems
37
DATA
VHDCPL
38
DATAB
IOD 43
50⍀
Instrumentation and Characterization Equipment
DRIVER
V
OUT
42
49
50
31
IODB
RLD
VLDCPL
RLDB
V
L
HCOMP
LEH
LEHB
QH
QHB
PRODUCT DESCRIPTION
COMPARATOR
NC
The AD53033 is a single chip that performs the pin electronics
functions of driver and comparator (D-C) in ATE VLSI and
memory testers.
QL
QLB
LEL
LELB
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 –3 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.
LCOMP
THERM
1.0A/K
9, 33, 44, 46, 48
PWRGND
2, 5, 8
ECLGND
HQGND2
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 Ω signal lines
terminated to –2 V. Signal tracking capability is upwards of
5 V/ns.
NC = NO CONNECT
sensor is a current sink that is proportional to absolute tempera-
ture. 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 +10 V to the THERM (IOUT) pin. A
voltage drop across the resistor will be developed that equals:
10K × 1 µA/K = 10 mV/K = 2.98 V at room temperature.
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 θJC
and θJA or flag an alarm if proper cooling is lost. Output from the
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.
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Tel: 781/329-4700
Fax: 781/326-8703
World Wide Web Site: http://www.analog.com
© Analog Devices, Inc., 1999