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ADP1712AUJZ-R7 Datasheet(PDF) 4 Page - Analog Devices |
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ADP1712AUJZ-R7 Datasheet(HTML) 4 Page - Analog Devices |
4 / 8 page EVAL-ADP1712/ADP1713/ADP1714 Rev. 0 | Page 4 of 8 EVALUATION BOARD CONFIGURATIONS The ADP1712/ADP1713/ADP1714 evaluation boards come supplied with different components depending on which version is ordered. Components common to all versions are C1, C2, and J1. ADP1712 FIXED OUTPUT WITH SOFT START Evaluation boards that come supplied with the ADP1712 fixed output voltage option devices has the additional C3 soft start capacitor. This capacitor controls the rise time when the output voltage starts up. Figure 3 shows the schematic of this evalua- tion board configuration. IN GND EN OUT 1 2 3 5 4 U1 ADP1712 C1 C2 J1 C3 SS VIN VOUT Figure 3. ADP1712 Fixed Output with Soft Start ADP1712 ADJUSTABLE OUTPUT Evaluation boards that come supplied with ADP1712 adjustable output voltage option devices have the additional R1 and R2 resistors to set the output voltage. Figure 4 shows the schematic of this evaluation board configuration. IN GND EN OUT 1 2 3 5 4 ADP1712 ADJUSTABLE U1 C1 C2 R1 R2 J1 ADJ VIN VOUT Figure 4. ADP1712 Adjustable Output The output voltage is set based on the following equation: ) 2 1 ( V 8 . 0 R R1 V OUT + = For example, if R1 = 10 kΩ and R2 = 4.99 kΩ, then VOUT is 2.403 V. ADP1713 FIXED OUTPUT WITH BYPASS Evaluation boards that come supplied with ADP1713 fixed output voltage option devices has the additional C3 bypass capacitor to reduce the output noise and improve PSRR. Figure 5 shows the schematic of this evaluation board configuration. IN GND EN OUT 1 2 3 5 4 U1 ADP1713 C1 C2 J1 C3 BYP VIN VOUT Figure 5. ADP1713 Fixed Output with Bypass ADP1714 FIXED OUTPUT WITH TRACKING Evaluation boards that come supplied with ADP1714 fixed output voltage option devices with tracking do not have C3, R1, or R2 populated. The user can instead connect an external voltage to the SS/ADJ/BYP/TRK pad of the evaluation board to use the track function. Figure 6 shows the schematic of this evaluation board configuration. IN GND EN OUT 1 2 3 5 4 U1 ADP1714 C1 C2 J1 TRK VIN VOUT VTRK Figure 6. ADP1714 Fixed Output with Tracking |
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