Jumper Setting
3.3 Jumper Setting
The figures in Table 3-5 will show the function of each jumper on the EVM.
Table 3-5. Jumper Setting Function
Reference | Jumper | Function | ||||
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| 1 |
| 3 | ROFFSET is strapped to VREF to set VSJ (summing junction) to VREF/2. Refer to the data | ||
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| sheet for offset adjustment. |
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W1 | 1 |
| 3 | ROFFSET is not connected to set VSJ (summing junction) to VREF/3. Refer to the data | ||
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| sheet for offset adjustment. | |
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| 1 |
| 3 | ROFFSET is strapped to AGND to set VSJ (summing junction) to VREF/6. Refer to the | ||
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| data sheet for osset adjustment. |
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| 1 |
| 3 | Disables the internal reference voltage. | ||
W2 |
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1 |
| 3 | Enables the internal reference voltage of +10V. | |||
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| 1 |
| 3 | REFIN is strapped to REFOUT to allow the internal 10 V to supply the DAC reference | ||
W3 |
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| voltage. |
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1 |
| 3 | REFIN is strapped to exREFin to allow either the onboard adjustable reference or user | |||
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| supplied reference to supply the DAC reference voltage. |
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| 1 |
| 3 | Routes the onboard 10 V reference through the adjustable pot to W3 and W14. | ||
W4 |
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1 |
| 3 | Routes the user supplied reference from TP1 or | |||
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| W3 and W14. |
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| 1 |
| 3 |
| Negative supply rail of | |
W5 |
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1 |
| 3 |
| Negative supply rail of | ||
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W6 |
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| REFADJ pin is not connected. |
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| REFADJ pin is connected to R1 pot for gain adjustment input when internal reference | |
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| is used. |
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| RFB2 pin is not connected to the VOUT pin. |
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W7
W8
RFB2 pin is strapped to the VOUT pin for feedback.
TEST pin not connected to DGND.
TEST pin connected to DGND (default mode).
SJ (summing junction) pin of the DAC output amplifier is not connected.
W9 |
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| SJ (summing junction) pin of the DAC output amplifier is connected to R2 pot to allow | |
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| small amount of current for offset adjustment. |
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W10 |
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| RFB1 pin is not connected. |
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RFB1 pin is strapped to RFB2 pin for DAC VOUT feedback.
EVM Operation |