Texas Instruments DAC90 EVM Series, User Manual

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12 SLAU726 – August 2017
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Jumper and Connector Descriptions
Appendix A
SLAU726 – August 2017
Jumper and Connector Descriptions
A.1 Jumper Descriptions
The EVM jumpers are shown in Table 3 as well as the default settings for the jumpers. Use this table to
reset the EVM in the default configuration, in case of issues.
Table 3. Jumper Descriptions and Default Settings
Jumper Description Default Setting
W1 OE input for the SN74LVT245B buffers Shunt pins 1-2
W2 Selects CLKOUT signal from the DSP or clock input from signal gen. Shunt pins 2-3
W3 Selects external or internal Vref. Shunt pins 1-2
W4 Supplies external Vref to the DAC Open
W5 No function N/A
W6 Selects IOUT1 or IOUT2 output from DAC to amplifier or transformer Position C
W7 Selects IOUT1 or IOUT2 output from DAC to amplifier or transformer Position F
W8 Configures the op amp for either differential input, noninverting or
inverting mode Shunt pins 2-3
W9 Configures the op amp for inverting, noninverting or differential mode Open
A.1.1 Connector Descriptions
The EVM connectors and their function are described in Table 4 .
Table 4. Connector Descriptions
Reference Designator Function
J1 Data bits 0 through 13 and CLKOUT input
J2, J4 Supplies power to the EVM
J3 Input control signals used to create EVM chip select
J5 Input for a clock signal source
J6, J7, J8, J9 DAC output signal