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AD5338RBRUZ 数据表(PDF) 8 Page - Analog Devices |
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AD5338RBRUZ 数据表(HTML) 8 Page - Analog Devices |
8 / 28 page AD5338R Data Sheet Rev. 0 | Page 8 of 28 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS Figure 3. 16-Lead LFCSP Pin Configuration Figure 4. 16-Lead TSSOP Pin Configuration Table 6. Pin Function Descriptions Pin No. Mnemonic Description LFCSP TSSOP 1 3 VOUTA Analog Output Voltage from DAC A. The output amplifier has rail-to-rail operation. 16 2 NC No Connect. Do not connect to this pin. 2 4 GND Ground Reference Point for All Circuitry on the Part. 3 5 VDD Power Supply Input. This part can be operated from 2.7 V to 5.5 V. Decouple the supply with a 10 µF capacitor in parallel with a 0.1 µF capacitor to GND. 4 6 NC No Connect. Do not connect to this pin. 5 7 VOUTB Analog Output Voltage from DAC B. The output amplifier has rail-to-rail operation. 6 8 SDA Serial Data Input. This pin is used in conjunction with the SCL line to clock data into or out of the 24-bit input shift register. SDA is a bidirectional, open-drain data line that should be pulled to the supply with an external pull-up resistor. 7 9 LDAC LDAC can be operated in two modes, asynchronous and synchronous. Pulsing this pin low allows any or all DAC registers to be updated if the input registers have new data. This allows both DAC outputs to simultaneously update. This pin can also be tied permanently low. 8 10 GAIN Gain Select. When this pin is tied to GND, both DAC outputs have a span from 0 V to VREF. If this pin is tied to VLOGIC, both DACs output a span of 0 V to 2 × VREF. 9 11 VLOGIC Digital Power Supply. Voltage ranges from 1.8 V to 5.5 V. 10 12 A0 Address Input. Sets the first LSB of the 7-bit slave address. 11 13 SCL Serial Clock Line. This is used in conjunction with the SDA line to clock data into or out of the 24- bit input register. 12 14 A1 Address Input. Sets the second LSB of the 7-bit slave address. 13 15 RESET Asynchronous Reset Input. The RESET input is falling edge sensitive. When RESET is low, all LDAC pulses are ignored. When RESET is activated, the input register and the DAC register are updated with zero scale or midscale, depending on the state of the RSTSEL pin. 14 16 RSTSEL Power-On Reset Select. Tying this pin to GND powers up both DACs to zero scale. Tying this pin to VLOGIC powers up both DACs to midscale. 15 1 VREF Reference Voltage. The AD5338R has a common reference pin. When using the internal reference, this is the reference output pin. When using an external reference, this is the reference input pin. The default for this pin is as a reference output. Not applicable EPAD Exposed Pad. The exposed pad must be tied to GND. 12 11 10 1 3 4 A1 SCL A0 9 VLOGIC VOUTA VDD 2 GND NC TOP VIEW (Not to Scale) AD5338R NOTES 1. NC = NO CONNECT. DO NOT CONNECT TO THIS PIN. 2. THE EXPOSED PAD MUST BE TIED TO GND. 1 2 3 4 5 6 7 8 NC VOUTA GND VOUTB NC VDD VREF SDA 16 15 14 13 12 11 10 9 RESET A1 SCL GAIN LDAC VLOGIC A0 RSTSEL TOP VIEW (Not to Scale) AD5338R NOTES 1. NC = NO CONNECT. DO NOT CONNECT TO THIS PIN. |
类似零件编号 - AD5338RBRUZ |
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类似说明 - AD5338RBRUZ |
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