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AD5755 Datasheet(PDF) 11 Page - Analog Devices |
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AD5755 Datasheet(HTML) 11 Page - Analog Devices |
11 / 44 page Data Sheet AD5737 Rev. B | Page 11 of 44 Pin No. Mnemonic Description 14 CLEAR Active High, Edge Sensitive Input. When this pin is asserted, the output current is set to the programmed clear code bit setting. Only channels enabled to be cleared are cleared. For more information, see the Asynchronous Clear section. When CLEAR is active, the DAC output register cannot be written to. 15 ALERT Active High Output. This pin is asserted when there is no SPI activity on the interface pins for a preset time. For more information, see the Alert Output section. 16 FAULT Active Low, Open-Drain Output. This pin is asserted low when any of the following conditions is detected: open circuit, PEC error, or an overtemperature condition (see the Fault Output section). 17 DGND Digital Ground. 18 RESET Hardware Reset, Active Low Input. 19 AVDD Positive Analog Supply Pin. The voltage range is from 9 V to 33 V. 20 NC No Connect. Do not connect to this pin. 21 CHARTA HART Input Connection for DAC Channel A. For more information, see the HART Connectivity section. 22 IGATEA Optional Connection for External Pass Transistor. Leave this pin unconnected when using the dc-to-dc converter. For more information, see the External PMOS Mode section. 23 COMPDCDC_A DC-to-DC Compensation Capacitor. Connect a 10 nF capacitor from this pin to ground. Used to regulate the feedback loop of the Channel A dc-to-dc converter. Alternatively, if using an external compensation resistor, place a resistor in series with a capacitor to ground from this pin. For more information, see the DC-to-DC Converter Compensation Capacitors section and the AICC Supply Requirements—Slewing section. 24 VBOOST_A Supply for Channel A Current Output Stage (see Figure 48). To use the dc-to-dc converter, connect this pin as shown in Figure 55. 25 NC No Connect. Do not connect to this pin. 26 IOUT_A Current Output Pin for DAC Channel A. 27 AGND Ground Reference Point for Analog Circuitry. This pin must be connected to 0 V. 28 NC No Connect. Do not connect to this pin. 29 CHARTB HART Input Connection for DAC Channel B. For more information, see the HART Connectivity section. 30 NC No Connect. Do not connect to this pin. 31 IGATEB Optional Connection for External Pass Transistor. Leave this pin unconnected when using the dc-to-dc converter. For more information, see the External PMOS Mode section. 32 COMPDCDC_B DC-to-DC Compensation Capacitor. Connect a 10 nF capacitor from this pin to ground. Used to regulate the feedback loop of the Channel B dc-to-dc converter. Alternatively, if using an external compensation resistor, place a resistor in series with a capacitor to ground from this pin. For more information, see the DC-to-DC Converter Compensation Capacitors section and the AICC Supply Requirements—Slewing section. 33 IOUT_B Current Output Pin for DAC Channel B. 34 VBOOST_B Supply for Channel B Current Output Stage (see Figure 48). To use the dc-to-dc converter, connect this pin as shown in Figure 55. 35 AGND Ground Reference Point for Analog Circuitry. This pin must be connected to 0 V. 36 SWB Switching Output for Channel B DC-to-DC Circuitry. To use the dc-to-dc converter, connect this pin as shown in Figure 55. 37 GNDSWB Ground Connection for DC-to-DC Switching Circuit. This pin should always be connected to ground. 38 GNDSWA Ground Connection for DC-to-DC Switching Circuit. This pin should always be connected to ground. 39 SWA Switching Output for Channel A DC-to-DC Circuitry. To use the dc-to-dc converter, connect this pin as shown in Figure 55. 40 AGND Ground Reference Point for Analog Circuitry. This pin must be connected to 0 V. 41 SWD Switching Output for Channel D DC-to-DC Circuitry. To use the dc-to-dc converter, connect this pin as shown in Figure 55. 42 GNDSWD Ground Connection for DC-to-DC Switching Circuit. This pin should always be connected to ground. 43 GNDSWC Ground Connection for DC-to-DC Switching Circuit. This pin should always be connected to ground. 44 SWC Switching Output for Channel C DC-to-DC Circuitry. To use the dc-to-dc converter, connect this pin as shown in Figure 55. 45 AVCC Supply for DC-to-DC Circuitry. The voltage range is from 4.5 V to 5.5 V. 46 VBOOST_C Supply for Channel C Current Output Stage (see Figure 48). To use the dc-to-dc converter, connect this pin as shown in Figure 55. 47 IOUT_C Current Output Pin for DAC Channel C. 48 COMPDCDC_C DC-to-DC Compensation Capacitor. Connect a 10 nF capacitor from this pin to ground. Used to regulate the feedback loop of the Channel C dc-to-dc converter. Alternatively, if using an external compensation resistor, place a resistor in series with a capacitor to ground from this pin. For more information, see the DC-to-DC Converter Compensation Capacitors section and the AICC Supply Requirements—Slewing section. |
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