| Both sides previous revisionPrevious revisionNext revision | Previous revision |
| playground:playground:adr1399e-ebz [12 May 2022 23:38] – Glen Brisebois | playground:playground:adr1399e-ebz [12 May 2022 23:47] (current) – Glen Brisebois |
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| **EVALUATION BOARD PHOTOGRAPH**\\ | **EVALUATION BOARD PHOTOGRAPH**\\ |
| {{:resources:eval:ADR1399E-EBZ_prophoto.jpg?400|}} | {{:resources:eval:ADR1399E-EBZ_prophoto.jpg?600|}} |
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| Figure 1. ADR1399E-EBZ, Primary Side | Figure 1. ADR1399E-EBZ, Primary Side |
| The board was designed along the lines of a simple “pocket calibrator”, so alternate means of supplying the DUT were not thoroughly provided for. For example, the Heater- is directly grounded, so there is no means of providing a negative 15V supply to Heater- for an overall 30V heater supply.\\ | The board was designed along the lines of a simple “pocket calibrator”, so alternate means of supplying the DUT were not thoroughly provided for. For example, the Heater- is directly grounded, so there is no means of providing a negative 15V supply to Heater- for an overall 30V heater supply.\\ |
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| The board is very easy to use. Just power the board using one of the methods discussed, and start measuring the output DC voltage. If you measure the supply current, you should see an initial fairly high current as the heater brings the ADR1399 to temperature (approx. 95C). The ADR1399 has an internal current limit of about 100mA, but the on board LT3045’s have been configured to limit available current to 75mA. After losses and transformer, this limits the 5V USB input current to about 250mA. \\ | The board is very easy to use. Just power the board using one of the methods discussed, and start measuring the output DC voltage. If you measure the supply current, you should see an initial fairly high current as the heater brings the ADR1399 to temperature (approx. 95C). The ADR1399 has an internal current limit of about 100mA. After losses and transformer, this limits the 5V USB input current to about 300mA. Total current at the DUT can be easily measured by probing across the 1 Ohm resistor R1 (at TP3, TP1).\\ |
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| EVALUATION BOARD SCHEMATIC AND ARTWORK \\ | EVALUATION BOARD SCHEMATIC AND ARTWORK \\ |
| {{:resources:eval:adr1399e_schem.jpg?400|ADR1399H}} | {{:resources:eval:adr1399e_schem.jpg?600|ADR1399H}} |
| Figure 2. ADR1399E-EBZ Schematic, DUT Section\\ | Figure 2. ADR1399E-EBZ Schematic, DUT Section\\ |
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| {{:resources:eval:adr1399e_schem_pwr.jpg?400|ADR1399H}} | {{:resources:eval:adr1399e_schem_pwr.jpg?600|ADR1399H}} |
| Figure 3. ADR1399E-EBZ Schematic, USB Conditioning, Isolated Power, and Regulator Sections\\ | Figure 3. ADR1399E-EBZ Schematic, USB Conditioning, Isolated Power, and Regulator Sections\\ |
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| {{:resources:eval:adr1399e_bom.jpg?400|ADR1399H}} | {{:resources:eval:adr1399e_bom.jpg?600|ADR1399H}} |
| Table 1. BILL OF MATERIALS | Table 1. BILL OF MATERIALS |
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