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AD780BN Folha de dados(PDF) 9 Page - Analog Devices |
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AD780BN Folha de dados(HTML) 9 Page - Analog Devices |
9 / 10 page AD780 REV. B –9– NEGATIVE (–2.5 V OR –3.0 V) REFERENCE The AD780 can produce a negative output voltage in shunt mode, simply by connecting the input and output to ground connecting the AD780’s GND pin to a negative supply via a bias resistor as shown in Figure 18. NC TEMP +VIN VOUT TRIM GND O/P SELECT 2.5V – NC 3.0V – GND NC 1 F AD780 V– –2.5 VOUT NOTE: IL = LOAD CURRENT IS MIN = MINIMUM SHUNT CURRENT NC = NO CONNECT VOUT – (V–) IL + IS MIN R = Figure 18. Negative (–2.5 V) Shunt Mode Reference A precise –2.5 V (or –3.0 V) reference capable of supplying up to 100 mA to a load can be implemented with the AD780 in se- ries mode using the bootstrap circuit following. AD780 2N3906 +5V +5V OP07 CONNECT IF –3V OUTPUT DESIRED –5V –2.5V (IL 100mA) –5V OUT 1k 1000pF VIN Figure 19. –2.5 V High Load Current Reference |
Nº de peça semelhante - AD780BN |
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Descrição semelhante - AD780BN |
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