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EVM7765AXF Datasheet(PDF) 4 Page - Semtech Corporation |
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EVM7765AXF Datasheet(HTML) 4 Page - Semtech Corporation |
4 / 24 page 4 © 2006 Semtech Corp. , Rev. 11, 7/18/06 TEST AND MEASUREMENT PRODUCTS www.semtech.com E7765 Figure 1. E7 Figure 1. E7 Figure 1. E7 Figure 1. E7 Figure 1. E77 77 7 765 De 65 De 65 De 65 De 65 Detailed Bloc tailed Bloc tailed Bloc tailed Bloc tailed Block Diagram k Diagram k Diagram k Diagram k Diagram Circuit Description Introduction Introduction Introduction Introduction Introduction Figure 1 shows a detailed block diagram of the E7765. Each of the four drivers has independent signal control and voltage inputs. In addition, each driver has independent power-down ability as well as adjustability for output rising and falling edge speeds. Refer to Table 1 for a truth table depicting the different modes of operation of an individual channel. Table 2 expands on the independent operations with a description of the differential drive mode operation. Differential pair[0] consists of drive channels 0 and 1 and are controlled by SEL_DHI[0]. Differential pair[1] consists of drive channels 2 and 3 and are controlled by SEL_DHI[1]. l o r t n o C 0 l e n n a h Ct u p t u O s t n e m m o C ] 0 [I H D] 0 [ N E D] 0 [ N O P] 0 [ T U O D XX 0 ff Oe t a t S Z i H ,r e w o P w o L X0 1 Z i H) Z i H ( d e l b a s i D r e v ir D 01 1 L V D I H D w o ll o F , d e l b a n E r e v ir D 11 1 H V D TTTTTable 1. Driv able 1. Driv able 1. Driv able 1. Driv able 1. Driver Contr er Contr er Contr er Contr er Control T ol T ol T ol T ol Truth T ruth T ruth T ruth T ruth Table able able able able Channels 1, 2 and 3 similar. SEL_DHI[0] and [1] at logical low. DBIAS[0] RADJ[0] FADJ[0] DOUT[0] FADJ[1] RADJ[1] CATHOD DOUT[1] DBIAS[1] ANODE DVH[0] DVH[1] DEN[0] DEN*[0] DEN[1] DEN*[1] PON[0] PON[1] DVL[0] DVL[1] DHI DHI*[0] DHI[1] DHI*[1] SEL_DHI[0] SEL DE DE DH DH Channel 0 Channel 1 DBIAS[2] RADJ[2] FADJ[2] DOUT[2] FADJ[3] RADJ[3] DOUT[3] DBIAS[3] DVH[2] DVH[3] DEN[2] DEN*[2] DEN[3] DEN*[3] PON[2] PON[3] DVL[2] DVL[3] DHI[2] DHI*[2] DHI[3] DHI*[3] SEL_DHI[1] SEL DE DE DH DH Channel 2 Channel 3 |
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