Datasheet

AD633 Data Sheet
Rev. K | Page 16 of 20
EVALUATION BOARD
The evaluation board of the AD633 enables simple bench-top
experimenting to be performed with easy control of the AD633.
Built-in flexibility allows convenient configuration to
accommodate most operating configurations. Figure 42 is a
photograph of the AD633 evaluation board.
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Figure 42. AD633 Evaluation Board
Any dual-polarity power supply capable of providing 10 mA or
greater is all that is required to perform the intended tests, in
addition to whatever test equipment the user wants.
Referring to the schematic in Figure 49, inputs to the multiplier are
differential and dc-coupled. Three-position slide switches enhance
flexibility by enabling the multiplier inputs to be connected to
an active signal source, to ground, or to a test loop connected
directly to the device pin for direct measurements, such as bias
current. Inputs may be connected single ended or differentially,
but must have a dc path to ground for bias current. If the
impedance of an input source is non-zero, an equal value
impedance must be connected to the opposite polarity input to
avoid introducing additional offset voltage.
The AD633-EVALZ can be configured for multiplier or divider
operation by switch S1. Refer to Figure 16 for divider circuit
connections.
Figure 43 through Figure 46 are the signal, power, and ground-
plane artworks, and Figure 47 shows the component and circuit
side silkscreen. Figure 48 shows the assembly.
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Figure 43. Component Side Copper
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Figure 44. Circuit Side Copper
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Figure 45. Inner Layer Ground Plane