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AD8328ACP-REEL7 データシート(PDF) 7 Page - Analog Devices |
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AD8328ACP-REEL7 データシート(HTML) 7 Page - Analog Devices |
7 / 20 page AD8328 Rev. A | Page 7 of 20 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TOP VIEW (Not to Scale) 20 19 18 17 16 15 14 13 12 11 1 2 3 4 5 6 7 8 9 10 AD8328 TXEN SDATA VCC CLK VIN+ SLEEP BYP NC VOUT+ NC = NO CONNECT GND GND GND VIN– GND RAMP VOUT– GND VCC DATEN GND Figure 5. 20-Lead QSOP Pin Configuration TOP VIEW (Not to Scale) AD8328 1 2 3 4 5 15 14 13 12 11 16 17 20 19 18 67 8 9 10 GND GND GND VIN+ VIN– RAMP VOUT+ VOUT– BYP NC Figure 6. 20-Lead LFCSP Pin Configuration Table 5. 20-Lead QSOP and 20-Lead LFCSP Pin Function Descriptions Pin No. 20-Lead QSOP Pin No. 20-Lead LFCSP Mnemonic Description 1, 3, 4, 7, 11, 20 1, 2, 5, 9, 18, 19 GND Common External Ground Reference. 2, 19 17, 20 VCC Common Positive External Supply Voltage. A 0.1 μF capacitor must decouple each pin. 5 3 VIN+ Noninverting Input. DC-biased to approximately VCC/2. Should be ac-coupled with a 0.1 μF capacitor. 6 4 VIN− Inverting Input. DC-biased to approximately VCC/2. Should be ac-coupled with a 0.1 μF capacitor. 8 6 DATEN Data Enable Low Input. This port controls the 8-bit parallel data latch and shift register. A Logic 0-to-Logic 1 transition transfers the latched data to the attenuator core (updates the gain) and simultaneously inhibits serial data transfer into the register. A Logic 1-to-Logic 0 transition inhibits the data latch (holds the previous gain state) and simultaneously enables the register for serial data load. 9 7 SDATA Serial Data Input. This digital input allows an 8-bit serial (gain) word to be loaded into the internal register with the most significant bit (MSB) first. 10 8 CLK Clock Input. The clock port controls the serial attenuator data transfer rate to the 8-bit master-slave register. A Logic 0-to-Logic 1 transition latches the data bit, and a Logic 1-to-Logic 0 transfers the data bit to the slave. This requires the input serial data-word to be valid at or before this clock transition. 12 10 SLEEP Low Power Sleep Mode. In the sleep mode, the AD8328’s supply current is reduced to 20 μA. A Logic 0 powers down the part (high ZOUT state), and a Logic 1 powers up the part. 13 11 NC No Connect. 14 12 BYP Internal Bypass. This pin must be externally ac-coupled (0.1 μF capacitor). 15 13 VOUT− Negative Output Signal 16 14 VOUT+ Positive Output Signal 17 15 RAMP External RAMP Capacitor (Optional) 18 16 TXEN Logic 0 Disables Forward Transmission. Logic 1 enables forward transmission. |
同様の部品番号 - AD8328ACP-REEL7 |
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同様の説明 - AD8328ACP-REEL7 |
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