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100Base-TX receiver: ENOB 5.5bit (實作6bit) 125Msps ADC4 ^/ v, T/ u( o& j9 _8 A9 C8 Y3 Y
1000Base-T receiver: ENOB 7.0bit (實作8bit) 125Msps ADC I# U& p! T0 x |
10GBase-T receiver: ENOB 9.5bit (實作10bit) 625Msps ADC (625 system)
3 S1 i& P; C* v; i3 y2 _. o10GBase-T receiver: ENOB 9.5bit (實作10bit) 833Msps ADC (833 system, 目前這個贏面較高)
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9 |7 p8 C3 {% h6 ~) M. s100Base-TX transmitter: [MLT-3] 3 level 1.50Vpp 125Msps DAC! \( k/ p( t! ?$ j" G! _
1000Base-T transmitter: [PAM-5] 5 level 2.00Vpp 125Msps DAC
# N7 y5 T8 ?( O( M+ l10GBase-T transmitter: [PAM-20] 20 level 3.14Vpp 625Msps DAC (625 system)" j9 o. a4 Z0 r: ` T9 |$ [7 W1 m
10GBase-T transmitter: [PAM-10] 10 level 3.14Vpp 833Msps DAC (833 system, 目前這個贏面較高)
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換言之, 有辦法搞出 ~GHz 的10bit AD 及 DA 才有10GBase-T 的入場券,
Q* a$ E% g# X6 T一下從125MHz 跳到 ~GHz... 真是令人n條斜線都跑出來了, 我看國內有
- f# x: S ?8 u3 b- H0 v- Rnear GHz AD/DA 的大概只有MTK DVD-RW set的RF front end, 不過那也是6bit左右matching的東東,
; r6 B% e0 d' Q2 Z3 ?9 J這規格要求的是9.5bit matching at 833MHz, 真的搞出來就改行做GHz示波器/AWG算了, 毛利還比較高哩. |
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