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| Evaluation Board for ADG824, 0.5 CMOS, 1.65 V to 3.6 V, Dual SPDT/2:1 Mux in Mini LFCSP EVAL-ADG824 FEATURES Full featured evaluation board for the ADG824 On-board audio connectors The evaluation kit contains a fully fitted PCB and a CD that contains the ADG824 data sheet and the EVAL-ADG824 data sheet. Refer to the ADG824 data sheet for full data on the part. Consult the ADG824 data sheet in conjunction with this data sheet when using the evaluation board. GENERAL DESCRIPTION This data sheet describes the evaluation board for the ADG824, which is a low voltage CMOS device that contains two independently selectable, single-pole, double-throw (SPDT) switches. The ADG824 offers ultralow on resistance of less than 0.7 over the full temperature range. Figure 1 shows the EVAL-ADG824. The ADG824 is soldered onto the evaluation board in a tiny 1.3 mm x 1.6 mm ultrathin LFCSP located in the center of the board and is designated as U1. CONNECTING SIGNALS TO THE BOARD The board is fitted with three audio connectors that allow switching between audio devices. All signals applied to the switch can be monitored using the test points provided on the board. EVALUATION BOARD Figure 1. Rev. 0 Evaluation boards are only intended for device evaluation and not for production purposes. Evaluation boards are supplied "as is" and without warranties of any kind, express, implied, or statutory including, but not limited to, any implied warranty of merchantability or fitness for a particular purpose. No license is granted by implication or otherwise under any patents or other intellectual property by application or use of evaluation boards. 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. Analog Devices reserves the right to change devices or specifications at any time without notice. Trademarks and registered trademarks are the property of their respective owners. Evaluation boards are not authorized to be used in life support devices or systems. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. www.analog.com Tel: 781.329.4700 Fax: 781.461.3113 (c)2008 Analog Devices, Inc. All rights reserved. 06754-001 EVAL-ADG824 TABLE OF CONTENTS Features .............................................................................................. 1 General Description ......................................................................... 1 Connecting Signals to the Board .................................................... 1 Evaluation Board .............................................................................. 1 Revision History ............................................................................... 2 Hardware Description ...................................................................... 3 Power Supply ................................................................................. 3 Switch Control Connectors ......................................................... 3 Evaluation Board Schematics...........................................................4 ADG824 Switch Pins, Test Points, and Connections ...............5 PCB Drawings ....................................................................................6 Ordering Information .......................................................................8 Component's List ...........................................................................8 Ordering Guide .............................................................................8 ESD Caution...................................................................................8 REVISION HISTORY 6/08--Revision 0: Initial Version Rev. 0 | Page 2 of 8 EVAL-ADG824 HARDWARE DESCRIPTION ADG824 EVALUATION BOARD AUDIO DEVICE 1 TO AUDIO DEVICE 1 TO AUDIO DEVICE 3 ADG824 AUDIO DEVICE 2 TO AUDIO DEVICE 2 AUDIO DEVICE 3 L3 L2 CONTROL SECTION: SWITCHES CAN BE CONTROLLED MANUALLY BY CHANGING JUMPER POSITIONS OR FROM AN EXTERNAL SIGNAL SOURCE TO THE SMB CONNECTORS. 06754-002 SMB CONNECTORS Figure 2. Evaluation Board Block Diagram The ADG824 evaluation kit contains a fully fitted PCB and a CD that contains the ADG824 data sheet and the EVAL-ADG824 data sheet. The evaluation board allows the user to switch between two audio sources or to switch an audio source between two speakers by using the on-board jumpers or by applying the correct control signals to the appropriate connectors. The following sections describe in detail the function of the connectors and links. SWITCH CONTROL CONNECTORS The ADG824 device offers a standard CMOS/LVTTL parallel interface consisting of two IN inputs. The IN1 and IN2 input pins control the switch state and operation mode of the ADG824. The evaluation board allows the user to control the signals required to set the logic levels applied to these pins by using the L2 and L3 links as described in Table 1 or by applying external signals to the SMB connectors, IN1 and IN2, as described in Table 2. To control the ADG824 using the SMB connectors, L2 and L3 must be set to Position B. Note that there are 51 termination resistors to GND at the IN1 and IN2 SMB connectors. POWER SUPPLY For convenience, a regulator supplies the ADG824 with a 3.3 V supply. A supply range of 3.3 V to 12 V can be connected to J6. Table 1. Control via Link L2/Link L3 L2 and L3 Position B A Audio Device 1 Status Inactive Active Switch Status Audio Device 2 Status Active Inactive Table 2. Control via SMB Connector Settings L2 and L3 Position B Switch Status--Audio Device Status SMB High = Audio Device 2 Active SMB Low = Audio Device 1 Active Rev. 0 | Page 3 of 8 EVAL-ADG824 EVALUATION BOARD SCHEMATICS 06754-003 ADG824 Figure 3. Evaluation Board Schematic Not Mounted Not Mounted Rev. 0 | Page 4 of 8 EVAL-ADG824 ADG824 SWITCH PINS, TEST POINTS, AND CONNECTIONS Table 3. Connector Name J2 J3 J6-1 J6-2 J5 Board Pin Mnemonic Phono Top Phono Bottom Phono Top Phono Bottom External 5V GND Phono Top Phono Bottom Pin Number 1 2 1 2 1 2 3 2 ADG824 Mnemonic S2A S1A S2B S1B VDD GND D2 D1 Test Point T9 T1 T7 T3 T6 T10 T8 T2 Rev. 0 | Page 5 of 8 EVAL-ADG824 PCB DRAWINGS Figure 4. Silkscreen Image of the Board 06754-004 Figure 5. PCB Drawing Layer 1 (Top Layer of the Board) Rev. 0 | Page 6 of 8 06754-005 EVAL-ADG824 Figure 6. PCB Drawing Layer 2 (Bottom Layer) Rev. 0 | Page 7 of 8 06754-006 EVAL-ADG824 ORDERING INFORMATION COMPONENT'S LIST Table 4. Reference Designator C1 to C3, C6, C7 C4, C5 D2 J2, J3 J6 J7, J8 J5 L2 to L3 R1 R2, R3 R4, R5 T1 to T10 U1 U6 Description Capacitor Capacitor+ LED Phono CON\POWER SMB Phono JUMPER2\SIP3 Resistor Resistor Resistor Test point ADG824 ADP3303-3.3 Value 0.1 F 10 F Supplier Name and Number FEC 9406140 FEC 1190117 FEC 8529906 Digi-Key CP-1435-ND FEC 151785 FEC 1019324 Digi-Key CP-1435-ND FEC 3291698 and FEC 150411 FEC 1160322 FEC 1160359 FEC 9331336 FEC 8731128 Analog Devices, Inc., ADG824 Analog Devices ADP3303ARZ-3.3 1 k 10 k 51 ORDERING GUIDE Model EVAL-ADG824EBZ 1 1 ESD CAUTION Description Evaluation Board Z = RoHS Compliant Part. (c)2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. EB06754-0-6/08(0) Rev. 0 | Page 8 of 8 |
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