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The EVAL-ADG1634LEBZ is the evaluation board for the ADG1634L. The ADG1634L contains four independent single-pole, double-throw (SPDT) switches. Each switch conducts equally well in both directions when on, and each switch has an input signal range that extends to the supplies. In the off condition, signal levels up to the supplies are blocked.
An external VL supply pin provides logic control flexibility for lower logic controls. The ADG1634L is both 1.2 V and 1.8 V JEDEC Standard compliant.
Figure 1 shows the EVAL-ADG1634LEBZ in a typical evaluation setup. The EVAL-ADG1634LEBZ is placed to the center of the evaluation board, and eight test points and SMB sockets are provided to connect to each of the sources and one test point and SMB socket for drain inputs. Three screw terminals are used to power the device. A 5-pin header is provided for user-defined digital voltage if required.
Full specifications on the ADG1634L are available in the ADG1634L data sheet available from Analog Devices, Inc., and should be consulted in conjunction with this user guide when using the evaluation board.
Figure 1. EVAL-ADG1634LEBZ
Connector P1 provides access to the supply pins of the ADG1634L. VDD, GND, and VSS on P1 link to the appropriate pins on the ADG1634L. For dual-supply voltages, the evaluation board can be powered at ±5 V. For single-supply voltages, the GND and VSS terminals must be connected and power the evaluation board with 5 V or 12 V. Additionally, 1.1 V to 1.95 V is supplied to the VL pin of the ADG1634L.
Three screw connectors, P3, P4, P5, and P6 are provided to connect to both the source and drain pins of the ADG1634L. Additional subminiature Version B (SMB) connector pads are available if extra connections are required. Each trace on the source and drain side includes two sets of 0603 pads, which can place a load on the signal path to the ground. A 0 Ω resistor is placed in the signal path and can be replaced with a user-defined value. The resistor combined with the 0603 pads can create a simple resistor-capacitor (RC) filter.
A number of link options are provided on the EVAL-ADG1634LEBZ board that must be set for the required operating conditions before use. Table 1 shows the summary of the link headers and how they are used on the evaluation board. The functions of these link options are described in detail in Table 2.
Table 1. Link Options
|JP13 to JP17||A||VL|
Table 2. Link Functions
|JP13 to JP17||This link selects the source of the IN voltage supplied to the ADG1634L.|
|Position A selects VL from P2.|
|Position B selects the 0 V or GND.|
The parallel interface of the AD1634L is controlled manually using the link headers of JP13 to JP17, or it can be accessed using the SMB connectors, IN1 to IN4. To use the SMB connectors, remove the link headers of JP13 to JP17.
Figure 2. EVAL-ADG1634LEBZ Schematic 1
Figure 3. EVAL-ADG1634LEBZ Schematic 2
Figure 4. EVAL-ADG1634LEBZ Silkscreen
Figure 5. EVAL-ADG1634LEBZ Top Layer
Figure 6. EVAL-ADG1634LEBZ Layer 2
Figure 7. EVAL-ADG1634LEBZ Layer 3
Figure 8. EVAL-ADG1634LEBZ Bottom Layer
|Reference Designator||Description||Manufacturer||Part Number|
|C1 to C3||50 V tantalum capacitor, 10 µF, Size D||KEMET||T491D106K050AT|
|C4 to C6, C15 to C17||50 V, X7R multilayer ceramic capacitor, 0.1 µF, 0603||VISHAY||VJ0603Y104KXAAC31X|
|C7 to C14, C18 to C21||Not placed||-||-|
|R1 to R12||Not placed||-||-|
|R13 to R24||Resistor 0 Ω 0603, 1%||YAGEO||RC0603JR-070RL|
|J1 to J18||50 Ω, SMB socket, do not insert||AMPHENOL||SMB1251B1-3GT30G-50|
|T1 to T12, TP14 to TP20, TP23||Red test point||VERO TECHNOLOGIES||20-313137|
|TP13, TP21 to TP22||Black test point||VERO TECHNOLOGIES||20-2137|
|P1||Header RA 3.81mm with plug||PHOENIX CONTACT||1803280|
|P2||Through hole header, 6P||SAMTEC||TSW-106-08-G-S|
|P3 to P6||3-pin terminal block, 5 mm||KEYSTONE ELECTRONICS||8719|
|JP13to JP17||3-pin SIL header and shorting link||HARWIN||M20-9990345|
|U1||4.7 Ω On-resistance, Quad SPDT Switch with 1.2 V and 1.8 V JEDEC Logic Compliance||ANALOG DEVICES, INC.||ADG1634L|