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AD9235BRURL7-40 Scheda tecnica(PDF) 8 Page - Analog Devices |
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AD9235BRURL7-40 Scheda tecnica(HTML) 8 Page - Analog Devices |
8 / 40 page AD9235 Data Sheet Rev. D | Page 8 of 40 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 AD9235 TOP VIEW (Not to Scale) MODE SENSE VREF AVDD REFT REFB OTR D10 D9 D8 D7 DGND DRVDD AGND VIN+ VIN– PDWN AVDD AGND D6 D5 D4 D0 (LSB) CLK D1 D2 D3 D11 (MSB) Figure 3. 28-Lead TSSOP Pin Configuration NOTES 1. DNC = DO NOT CONNECT. 2. IT IS RECOMMENDED THAT THE EXPOSED PADDLE BE SOLDERED TO THE GROUND PLANE. D8 D9 D10 D11 (MSB) OTR MODE SENSE VREF D1 D0 (LSB) DNC DNC PDWN DNC CLK DNC AD9235 TOP VIEW (Not to Scale) 1 2 3 4 5 6 7 8 24 23 22 21 20 19 18 17 Figure 4. 32-Lead LFCSP Pin Configuration Table 6. Pin Function Descriptions Pin No. 28-Lead TSSOP Pin No. 32-Lead LFCSP Mnemonic Description 1 21 OTR Out-of-Range Indicator. 2 22 MODE Data Format and Clock Duty Cycle Stabilizer (DCS) Mode Selection. 3 23 SENSE Reference Mode Selection. 4 24 VREF Voltage Reference Input/Output. 5 25 REFB Differential Reference (−). 6 26 REFT Differential Reference (+). 7, 12 27, 32 AVDD Analog Power Supply. 8, 11 28, 31 AGND Analog Ground. 9 29 VIN+ Analog Input Pin (+). 10 30 VIN– Analog Input Pin (−). 13 2 CLK Clock Input Pin. 14 4 PDWN Power-Down Function Selection (Active High). 15 to 22, 25 to 28 7 to 14, 17 to 20 D0 (LSB) to D11 (MSB) Data Output Bits. 23 15 DGND Digital Output Ground. 24 16 DRVDD Digital Output Driver Supply. Must be decoupled to DGND with a minimum. 0.1 µF capacitor. Recommended decoupling is 0.1 µF in parallel with 10 µF. 1, 3, 5, 6 DNC Do Not Connect. EP EPAD Exposed Pad. It is recommended that the exposed paddle be soldered to the ground plane. There is an increased reliability of the solder joints and maxi- mum thermal capability of the package is achieved with exposed paddle soldered to the customer board. |
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