EVAL-ADCMP572/573/580/581/582

Transcription

1 Evaluation Board for ADCMP57/ ADCMP57/ADCMP580/ADCMP58/ADCMP58 EVAL-ADCMP57/57/580/58/58 GENERAL DESCRIPTION This document provides an overview and suggested lab test setups of the evaluation board for Analog Devices new ADCMP57/ ADCMP57/ADCMP580/ADCMP58/ADCMP58 comparator products. Because these comparators represent state of the art, general-purpose comparator technology, it is important that their performance characteristics be evaluated using the highest bandwidth components available. The evaluation board provides a relatively high quality environment in which to make such measurements. All five device types are fully released to production. This document should be used in conjunction with the ADCMP57x/ADCMP58x data sheets that contain full technical details on the device specifications and operation. The same PCB is used to evaluate the ADCMP57, ADCMP57, ADCMP580, ADCMP58, and ADCMP580. EVALUATION BOARD DESCRIPTION Figure is a photograph of the top of the evaluation board. It is fabricated using a high quality dielectric material between the ground plane and signal layers in order to maintain high signal integrity. All input and output signals are brought on to the board with.9 mm RF connectors, and transmission line paths are kept as close to 50 Ω as possible. PACKAGE LIST Evaluation board with component installed Schematic EVALUATION BOARD Figure. ADCMP57/ADCMP57/ADCMP580/ADCMP58/ADCMP58 Evaluation Board 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 that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 906, Norwood, MA , U.S.A. Tel: Fax: Analog Devices, Inc. All rights reserved.

2 EVAL-ADCMP57/57/580/58/58 TABLE OF CONTENTS General Description... Evaluation Board Description... Package List... Evaluation Board... Revision History... Using the Evaluation Board... Measurements... Setting Up the Evaluation Board... 4 Connect Power... 4 Setup Input Signals...8 Connect Output Signals...8 Jumper Setup...9 Test Setup... 0 Additional Support... 0 Schematics... Ordering Information... 0 Ordering Guide... 0 ESD Caution... 0 Connect Inputs... 8 REVISION HISTORY /06 Revision 0: Initial Version Rev. 0 Page of 0

3 EVAL-ADCMP57/57/580/58/58 USING THE EVALUATION BOARD MEASUREMENTS The same PCB is used to evaluate both ADCMP57x and ADCMP58x families. The Setting Up the Evaluation Board section describes the measurements that can be performed with this evaluation board. Table. Basic Equipment Description Example Equipment Quantity Power Supply with Agilent E6A Three Outputs Pulse Generator HP8A, Agilent 84A Signal Analyzer CSA 8000 with 80E04 sampling head Source Meter Matched High Speed Cables with.9 mm Connectors Keithley 400 SourceMeter, Keithley 8 high current source-measure unit Insulated Wire Inc. kps kps Florida RF LABS LAB-FLEX 60 Y94 4 Equipment used to generate example measurements within this document. 0 GHz sampling head used for all time measurements. Rev. 0 Page of 0

4 EVAL-ADCMP57/57/580/58/58 SETTING UP THE EVALUATION BOARD CONNECT POWER Several power supply levels must be provided to the board for VCCI, VCCO, VEE, VTT, CGND (the comparator s GND pin), and GND via the banana jacks. Make a direct connection from the DUT output pins to the oscilloscope because any transmission line discontinuity degrades performance. The flexible power supply scheme of the ADCMP57/ADCMP57 comparators can be confusing with VTT at system ground. The GND pin on the comparator is no longer at GND dc potential, except for the ADCMP580, and, therefore, is named CGND on the board. Because of this, VTT is always at GND and therefore, VCCO = VTT (GND) +.0 V for the ECL/PECL ADCMP57/ADCMP58/ ADCMP58, and VCCO = VTT = GND for the CML type ADCMP57 and GND = CGND = VTT only for the CML ADCMP580, as detailed in Table through Table 4. Table. ADCMP580/ADCMP58 Power Supply Connections Pin No. Mnemonic ADCMP580 (CML) ADCMP58(NECL) 5, 6 VCCI (Red) 5.0 V 7.0 V 9, GND (Purple) (also CGND for these devices) 0.0 V.0 V VEE (Orange) 5.0 V.0 V 4 HYS (Orange) 5.0 V.0 V 8 VTT (Green) 0 V 0 V 5 CGND (Brown) 0.0 V.0 V GND Plane (Black) 4 0 V 0 V VCCI = 5.0 V, VCCO = 0 V, VEE = 5.0 V. VCCI = 5.0 V, VCCO = 0 V, VEE = 5.0 V. CGND is the comparator ground (Pin 5) renamed. 4 GND is always system ground. V CCI V CCI V TP 5, 6 GND V TP 5, 6 GND V P + 9, Q OUTPUT V P + 9, Q OUTPUT ADCMP580 CML ADCMP58 RSECL V N 0 Q OUTPUT V N 0 Q OUTPUT V TN HYS V TT LE INPUT LE INPUT V TN HYS V TT LE INPUT LE INPUT V EE GND NOTES. FOR ADCMP580 CGND = GND. Figure. ADCMP580 Power Supply Connections V EE GND NOTES. GND HERE BECOMES BOARD CGND. Figure. ADCMP58 Power Supply Connections Rev. 0 Page 4 of 0

5 EVAL-ADCMP57/57/580/58/58 Table. ADCMP58 Power Supply Connections Pin No. Mnemonic ADCMP58(PECL) ADCMP58(PECL) ADCMP58(PECL) 5, 6 VCCI (Red).0 V.7 V 4.5 V 9, VCCO (Purple).0 V.0 V.0 V VEE (Orange) 8.0 V 6. V 5.5 V 4 HYS 8.0 V 6. V 5.5 V 8 VTT (Green) 0 V 0 V 0 V 5 CGND (Brown).0 V. V 0.5 V GND Plane (Black) 4 0 V 0 V 0 V VCCI = 5.0 V, VCCO = 5.0 V, VEE = 5.0 V. VCCI = 5.0 V, VCCO =. V, VEE = 5.0 V. CGND is the comparator ground (Pin 5) renamed. 4 GND is always system ground. V CCI V TP 5, 6 V CCO V P + 9, Q OUTPUT ADCMP58 RSPECL V N 0 Q OUTPUT V TN HYS V TT LE INPUT LE INPUT V EE GND NOTES. GND HERE BECOMES BOARD CGND. Figure 4. ADCMP58 Power Supply Connections Rev. 0 Page 5 of 0

6 EVAL-ADCMP57/57/580/58/58 Table 4. ADCMP57 Power Supply and Input Translation Pin Case Case Case VCCI 0.0 V.9 V 0.0 V VCCO 0.0 V 0.0 V 0.0 V CGND. V. V 5. V VTP_F/VTN_F 0 V 0 V 0 V VTT 0.0 V 0.0 V 0.0 V VP/VN.5V < VN/VP <.V.5 V < VP/VN < 0. V 5.4 V < VP/VN <.0 V LE/LE 0.0 V/ 0.4 V 0.0 V/ 0.4 V 0.0 V/ 0.4 V AGND (This is not a pin in the part.) 0.0 V 0.0 V 0.0 V VCCI = VCCO =. V. VCCI = 5. V, VCCO =. V. VCCI = VCCO = 5. V. V CCI V TP 5, 6 V CCO V P + 9, Q OUTPUT ADCMP57 RSPECL V N 0 Q OUTPUT V TN HYS V TT LE INPUT LE INPUT GND GND NOTES. GND HERE BECOMES BOARD CGND Figure 5. ADCMP57 Power Supply Connections Rev. 0 Page 6 of 0

7 EVAL-ADCMP57/57/580/58/58 Table 5. ADCMP57 Power Supply and Input Translation Pin Case Case Case VCCI.0 V.9 V.0 V VCCO.0 V.0 V.0 V CGND. V. V. V VTP_F/VTN_F 0 V 0 V 0 V VTT 0.0 V 0.0 V 0.0 V VP/VN.5V < VN/VP < 0. V.5 V < VP/VN < +.9 V.4 V < VP/VN < 0.0 V LE/LE. V/0.8V. V/0.8 V. V/0.8 V AGND This is not a pin in the part. 0.0 V 0.0 V 0.0 V VCCI = VCCO =. V. VCCI = 5. V, VCCO =. V. VCCI = VCCO = 5. V. V CCI V TP 5, 6 V CCO V P + 9, Q OUTPUT ADCMP57 CML V N 0 Q OUTPUT V TN HYS V TT LE INPUT LE INPUT GND GND NOTES. GND HERE BECOMES BOARD CGND Figure 6. ADCMP57 Power Supply Connections Rev. 0 Page 7 of 0

8 EVAL-ADCMP57/57/580/58/58 CONNECT INPUTS Connect the differential output of the generator to the differential comparator input pins of the device, VP and VN. Connect the differential data output of the generator to the differential latch input of the device, LE and LE. SETUP INPUT SIGNALS Input and latch levels must be shifted consistently with the power supplies (see Table 4 through Table 7). Set voltage termination VTP_F and VTN_F to GND to terminate the on-chip, 50 Ω input resistors. Leave the hysteresis control pin, HYS, open for zero hysteresis or connect the HYS pin to VEE with a suitably sized resistor to add the desired amount of hysteresis. CONNECT OUTPUT SIGNALS Connect the output of the comparator, Q and QB, to the signal analyzer. The sampling head must have an internal 50 Ω termination to ground. Table 6. ADCMP580/ADCMP58 Input Signal and Latch Setup Pin Mnemonic ADCMP580 (CML) ADCMP58(NECL), VP/VN.0 V < VP/VN < +.0 V 0.0 V < VP/VN < +5.0 V, 4 VTP_F/VTN_F (Blue) 0 V 0 V 6, 7 LE/LE 0.0 V/ 0.4 V 0.8 V/0.4 V VCCI = 5.0 V, VCCO = 0 V, VEE = 5.0 V. VCCI = 5.0 V, VCCO = 0 V, VEE = 5.0V. Table 7. ADCMP58 Input Signal and Latch Setup Pin Mnemonic ADCMP58(PECL) ADCMP58(PECL) ADCMP58(PECL), VP/VN 5.0 V < VP/VN < 0.0 V. V < VP/VN <.7 V.5 V < VP/VN <.5 V, 4 VTP_F/VTN_F (Blue) 0 V 0 V 0 V 6, 7 LE/LE 0.8 V/0.4 V 0.8 V/0.4 V 0.8 V/0.4 V VCCI = 5.0 V, VCCO = 5.0 V, VEE = 5.0 V VCCI = 5.0 V, VCCO =. V, VEE = 5.0 V VCCI = 5.0 V, VCCO =.5 V, VEE = 5.0 V Rev. 0 Page 8 of 0

9 JUMPER SETUP This evaluation board works with five different comparators, the ADCMP57/ADCMP57 and the ADCMP580/ ADCMP58/ADCMP58. To reduce the number of wires to the power supply, jumpers are provided wherever comparator supplies might be rerouted. When a comparator is mounted onto the board, the jumpers should be set properly for that product. The user does not have to adjust Jumper, Jumper, and Jumper unless a new device type is soldered onto the board. EVAL-ADCMP57/57/580/58/58 If the evaluation board is to be used for a different comparator type than was mounted on the board originally, pull all the jumpers to prevent errors. Once the new part type is installed, the jumpers can be reinstalled. Table 8 gives the correct jumper settings and resulting banana jack connections for each of the comparator products. Set conservative current limits on all power supplies. Table 8. Jumper Connections Jumper ADCMP57/ADCMP57 ADCMP580/ADCMP58 ADCMP58 Conditions P Short, (TP0) Short, (TP6) Short, (TP6) Device VEE/GND P Short, (TP9) Short, (TP0) Short, (TP9) Device VCCO P Short, (TP/GND) Short, (TP/GND) Short, (TP/GND) Device VTT P4/P5 Short, Short, Short, VP/VN as a differential input P4 Short, Short, Short, Drive VP Short, Short, Short, Drive VN P5 Short, Short, Short, DC Bias VN Short, Short, Short, DC Bias VP Rev. 0 Page 9 of 0

10 EVAL-ADCMP57/57/580/58/58 TEST SETUP Figure shows Analog Devices test configuration setup that was used for much of the initial engineering evaluation. It is provided here as a guideline and to assist in replicating our setup. ADDITIONAL SUPPORT For further support regarding the ADCMP57/ADCMP57 and ADCMP580/ADCMP58/ADCMP58 comparators and/or evaluation boards, refer to 80E04 TRIGGER PICOSECOND PULSE LABS 56 5x PICKOFF TEE AGILENT E6A TRIPLE POWER SUPPLY LE LE VN Q VP Q FLORIDA RF LAB-FLEX 60 Y 94 KEITHLEY 400 SOURCE METER ADCMP58x EVALUATION BOARD Figure 7. Typical Test Setup for Measuring Performance Rev. 0 Page 0 of 0

11 4 9 EVAL-ADCMP57/57/580/58/58 SCHEMATICS NOTES. OUTPUT SWING WILL BE APPROXIMATELY 400 mvp-p AS SEEN AT THE CONNECTOR INTO A 50 Ω LOAD...9mm CONNECTOR MOUNTING SCREWS WILL NEED ADHESIVE.. A SELECTION OF RESISTORS TO BE PROVIDED FOR POSSIBLE INSERTION INTO JP. 4. MAKE JP'S MOUNTING HOLES LARGE ENOUGH FOR COTO CUPS. 5. 0µA 500µA FLOATING/OPEN IS NORMAL OPERATING MODE. C C6 C7 C0 C MOLEX-0-0 P5 RED TP5 VTN_F.9mm J.9mm J C70 C60 C64 C69 C4 MOLEX-0-0 P4 RED TP4 VTP_F.9mm.9mm J J4 LE LE C C5 C C8 VCCI U C C0 VTT VTP VP VN VTN VTP VP VN VTN VCC_ VCC_ LEB GND LE RH VEE/GND VCC0_ Q Q VCC0_ VCCI C7 C8 HYS C5 OPEN CGND JP RED TP C C6 C9 C50 C C4 C7 C9 VEE_CGND C48 C49 P VCC0_CGND VTT_GND CGND MOLEX-0-0 VEE CGND P MOLEX-0-0 VCC0 P MOLEX-0-0 VTT_PLANE Q Q J5.9mm.9mm Figure 8. Schematic, Main J Rev. 0 Page of 0

12 EVAL-ADCMP57/57/580/58/58 Rev. 0 Page of C6 0UF TP BLU TP BLU C75 C67 C77 UF C7 C7 C76 C79 UF C74 C0 0UF VTN_F VTP_F C86 C84 C85 C87 C8 C8 C80 C8 TP0 BRN C7 UF C4 C C C5 C6 CGND C7 0UF C65 0UF TP9 VIO TP GRN TP6 ORG TP BLK C66 0UF C5 C5 C68 UF C55 C6 C6 C6 C59 C58 C57 C56 C54 C5 C5 C4 C78 UF C9 0UF C4 C C C TP BLK TP7 RED VCC0 VCCI VEE VTT_PLANE Figure 9. Schematic, Bypass Capacitors

13 EVAL-ADCMP57/57/580/58/58 PC BOARD Figure 0. Bottom Signal Layer Figure. GND Plane Rev. 0 Page of 0

14 EVAL-ADCMP57/57/580/58/58 Figure. VCC Plane Figure. GND Plane Rev. 0 Page 4 of 0

15 EVAL-ADCMP57/57/580/58/58 Figure 4. Miscellaneous DC Plane Figure 5. GND Plane Rev. 0 Page 5 of 0

16 EVAL-ADCMP57/57/580/58/58 Figure 6. Upper Plane Figure 7. Top Rev. 0 Page 6 of 0

17 EVAL-ADCMP57/57/580/58/58 Figure 8. Solder Mask Figure 9. Solder Mask Rev. 0 Page 7 of 0

18 EVAL-ADCMP57/57/580/58/58 SILKSCREENS Figure 0. Silkscreen Bottom Figure. Silkscreen Top Rev. 0 Page 8 of 0

19 EVAL-ADCMP57/57/580/58/58 COMPONENTS Figure Bottom Components Figure. Top Components Rev. 0 Page 9 of 0

20 EVAL-ADCMP57/57/580/58/58 ORDERING INFORMATION ORDERING GUIDE Model EVAL-ADCMP57BCP EVAL-ADCMP57BCP EVAL-ADCMP580BCP EVAL-ADCMP58BCP EVAL-ADCMP58BCP Package Description Evaluation Board Evaluation Board Evaluation Board Evaluation Board Evaluation Board ESD CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although this product features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. 006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. EB058 0 /06(0) Rev. 0 Page 0 of 0