AD53033_15 Datasheet, PDF (1/6 Pages) Analog Devices – High Performance Driver/Comparator on a Single Chip

a
High Performance Driver/Comparator
on a Single Chip
AD53033
FEATURES
250 MHz Operation
Driver/Comparator Included
52-Lead LQFP Package with Built-in Heat Sink
APPLICATIONS
Automatic Test Equipment
Semiconductor Test Systems
Board Test Systems
Instrumentation and Characterization Equipment
PRODUCT DESCRIPTION
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 –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.
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.
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 θ_JC
and θ_JA or flag an alarm if proper cooling is lost. Output from the
FUNCTIONAL BLOCK DIAGRAM
VH 47
VTERM 45
DATA 37
DATAB 38
IOD 43
IODB 42
RLD 49
RLDB 50
V_L 31
HCOMP
LEH
LEHB
QH
QHB
QL
QLB
LEL
LELB
LCOMP
V_CC V_CC V_CC
51
52
V_EE V_EE V_EE
32 39 40
V_EE
41
AD53033
DRIVER
50⍀
COMPARATOR
VHDCPL
V_OUT
VLDCPL
NC
9, 33, 44, 46, 48
PWRGND
NC = NO CONNECT
2, 5, 8
ECLGND
1.0␮A/K
HQGND2
THERM
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.
REV. 0
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© Analog Devices, Inc., 1999