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AD5405YCP-REEL データシート(PDF) 7 Page - Analog Devices |
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AD5405YCP-REEL データシート(HTML) 7 Page - Analog Devices |
7 / 24 page AD5405 Rev. 0 | Page 7 of 24 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS PIN 1 INDICATOR AD5405 TOP VIEW 1 R1A 2 R2A 3 R2_3A 4 R3A 5 VREFA 6 DGND 7 LDAC 8 DAC A/B 9 NC 10 DB11 NC = NO CONNECT 30 R1B 29 R2B 28 R2_3B 27 R3B 26 VREFB 25 VDD 24 CLR 23 R/W 22 CS 21 DB0 Figure 4. Pin Configuration Table 4. Pin Function Descriptions Pin No. Mnemonic Function 1 to 4 R1A to R3A DAC A 4-Quadrant Resistors. Allow a number of configuration modes, including bipolar operation with minimum of external components. 5, 26 VREFA, VREFB DAC Reference Voltage Input Terminals. 6 DGND Digital Ground Pin. 7 LDAC Load DAC Input. Allows asynchronous or synchronous updates to the DAC output. The DAC is asynchronously updated when this signal goes low. Alternatively, if this line is held permanently low, an automatic or synchronous update mode is selected whereby the DAC is updated on the rising edge of CS. 8 DAC A/B Selects DAC A or B. Low selects DAC A, while high selects DAC B. 9, 34, 35, 36, 37 NC Not internally connected. 10 to 21 DB11 to DB0 Parallel Data Bits 11 through 0. 22 CS Chip Select Input. Active low. Used in conjunction with R/W to load parallel data to the input latch or to read data from the DAC register. Edge sensitive; when pulled high, the DAC data is latched. 23 R/W Read/Write. When low, used in conjunction with CS to load parallel data. When high, used in conjunction with CS to read back contents of DAC register. 24 CLR Active Low Control Input. Clears DAC output and input and DAC registers. 25 VDD Positive Power Supply Input. These parts can be operated from a supply of 2.5 V to 5.5 V. 26 to 30 R3B to R1B DAC B 4-Quadrant Resistors. Allow a number of configuration modes, including bipolar operation with a minimum of external components. 32 IOUT2B DAC A Analog Ground. This pin typically should be tied to the analog ground of the system, but may be biased to achieve single-supply operation. 33 IOUT1B DAC B Current Outputs. 38 IOUT1A DAC A Current Outputs. 39 IOUT2A DAC A Analog Ground. This pin typically should be tied to the analog ground of the system, but may be biased to achieve single-supply operation. 31, 40 RFBB, RFBA External Amplifier Output. |
同様の部品番号 - AD5405YCP-REEL |
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同様の説明 - AD5405YCP-REEL |
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