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AD53509 Folha de dados(PDF) 1 Page - Analog Devices |
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AD53509 Folha de dados(HTML) 1 Page - Analog Devices |
1 / 8 page REV. A 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. a AD53509 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 © Analog Devices, Inc., 2000 High-Performance Driver/Comparator Active Load on a Single Chip FUNCTIONAL BLOCK DIAGRAM DRIVER COMPARATOR 46 V/I V/I ACTIVE LOAD 1.0 A/K VCC VCC VCC 34 VCC VEE VEE VEE VEE 51 52 39 40 41 32 AD53509 VHDCPL VOUT VLDCPL 39nF CHDCPL 39nF CLDCPL 2,5,8 9,33,44,46,48 PWRGND VCCO HQGND2 HQGND VCOMS THERM NC 35 36 +1 31 50 49 42 43 38 37 45 47 VH VTERM DATA DATA IOD IOD RLD RLD VL HCOMP LEH LEH QH QH QL QL LEL LEL LCOMP VCOMI IOLC IOLRTN IOHRTN INHL INHL IOHC NC = NO CONNECT OUT_L 14, 26 FEATURES 250 MHz Operation Driver/Comparator and Active Load Included On-Chip Schottky Diode Bridge 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 AD53509 is a single chip that performs the pin electronics functions of driver, comparator and active load in ATE VLSI and memory testers. In addition, a Schottky diode bridge for the active load and a VCOM buffer are included internally. 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 –2 V to +7 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. The active load can be set for up to 40 mA load current with less than a 10 µA linearity error through the entire set range. IOH, IOL and the buffered VCOM are independently adjustable. On-board Schottky diodes provide high speed switching and low capacitance. Also included on the chip is an on-board temperature sensor whose purpose is to give an indication of the surface tempera- ture of the DCL. This information can be used to measure θJC and θJA or flag an alarm if proper cooling is lost. Output from the sensor is a current sink that is proportional to absolute tem- perature. 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 k Ω 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. |
Nº de peça semelhante - AD53509 |
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Descrição semelhante - AD53509 |
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