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ACE9030M bảng dữ liệu(PDF) 4 Page - Mitel Networks Corporation |
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ACE9030M bảng dữ liệu(HTML) 4 Page - Mitel Networks Corporation |
4 / 39 page 4 ACE9030 Fig.4 Typical VDD local decoupling networks without series resistors Fig.5 Typical VDD local decoupling networks with series resistors ABSOLUTE MAXIMUM RATINGS Supply voltage from ground – 0·3 V to + 6·0 V (any V DD to any VSS) Supply voltage difference – 0·3 V to + 0·3 V (any V DD to any other VDD) Input voltage V SS – 0·3 V to VDD + 0·3 V (any input pin to its local V SS and VDD) Output voltage V SS – 0·3 V to VDD + 0·3 V (any output pin to its local V SS and VDD) Storage temperature – 55 °C to + 150 °C Operating temperature – 40 °C to + 85 °C tions V DDSUB and VDDSUB2 must be the most positive of all VDD’s at all times including during power on and off ramping. As the current taken through these V DD’s is significantly less than through the other V DD’s this requirement can be easily met by directly connecting all V DD pins to a common point on the circuit board but with the decoupling capacitors distributed to minimise cross-talk caused by common mode currents. If low value series resistors are to be included in the V DD connec- tions, with decoupling capacitors by the ACE9030 pins to further reduce interference, the V DDSUB and VDDSUB2 pins should not have such a resistor in order to guarantee that their voltage is not slowed down at power-on. Power switches to DOUT0 and DOUT1 are supplied from V DDX and are specified for a total current of up to 40 mA so any resistor in the V DDX connection must be very low, around 1 Ω, in order to avoid excessive voltage drop; it is recommended that this supply has no series resistor. These two methods are shown in circuit diagrams, figures 4 and 5. In both circuits the main V DD must also have good decoupling. These are not the operating conditions, but are the absolute limits which if exceeded even momentarily may cause permanent damage. To ensure sustained correct op- eration the device should be used within the limits given under Electrical Characteristics. To avoid any possibility of latch-up the substrate connec- Main VDD VDDSUB VDDSUB2 VDDL VDDA VDDX VDDD VDDSA VDDSUB VDDSUB2 VDDL VDDA VDDX VDDD VDDSA Main VDD No Resistor No Resistor Very Small |
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Mô tả tương tự - ACE9030M |
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