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ADATE207BBP Arkusz danych(PDF) 6 Page - Analog Devices |
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ADATE207BBP Arkusz danych(HTML) 6 Page - Analog Devices |
6 / 36 page ADATE207 Rev. 0 | Page 6 of 36 ABSOLUTE MAXIMUM RATINGS Table 3. Parameter Rating VDD −0.3 V to +2.8 V Digital Inputs −0.3 V to VDD + 0.3 V Resistor Termination pins −0.3 to VDD + 0.3 V Resistor Termination Current 12 mA max Termination Pad Current 12 mA max Junction Temperature 125°C Storage Temperature −40 to 125°C Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Table 4. Recommended Operating/Environmental Conditions Parameter Min Typ Max Unit VDD 2.375 2.5 2.625 V Case Temperature (TC) 85 °C Relative Humidity (Noncondensing) 85 % THERMAL RESISTANCE Table 5. Thermal Resistance Package Type θJA θJC Unit 256-Lead BGA_ED 1.5 °C/W In Still Air 14.3 °C/W 200 LFPM 12.0 °C/W 400 LFPM 11.2 °C/W BYPASSING SCHEME For decoupling, best practice suggests that to preserve as much of the plane-to-plane capacitance as possible, do not perforate the planes for VSS and VDD. Secondly, it is advisable to decouple VDD to VSS by using 0.1 μF high frequency ceramic capacitors. The trace to the capacitor should be kept to an absolute minimum length. It is recommend that one capacitor be placed in the corner of the chip and one in the middle of each side for a total of eight capacitors for VDD to VSS. Furthermore, decouple IOVDD to IOVSS on each side of the device. It is recommended that 10 μF tantalum or ceramic capacitors be used for low frequency decoupling around the device. It is not important for these capacitors to be close to the device. Table 6. Data Table for 256-Lead Ball Grid Array, Thermally Enhanced, 27 mm × 27 mm Body Dimension Minimum (mm) Nominal (mm) Maximum (mm) A 1.70 A1 0.50 0.60 0.70 A2 0.60 0.80 1.00 D 26.90 27.00 27.10 D1 24.03 24.13 24.23 E 26.90 27.00 27.10 E1 24.03 24.13 24.23 b 0.60 0.75 0.90 e 1.27 aaa 0.20 bbb 0.25 ccc 0.35 ddd 0.20 eee 0.30 fff 0.15 S 0.635 ESD CAUTION |
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