NB7VPQ16M Datasheet, PDF (2/16 Pages) ON Semiconductor – 1.8V/2.5V CML 12.5 Gbps Programmable Pre-Emphasis Copper/Cable Driver with Selectable Equalizer Receiver

Multi−Level Inputs
LVPECL, LVDS, CML
(2) IN
50W
(1) _VT
50W
(3) _IN
NB7VPQ16M
V_CCD
V_CC
GND
(15) SDIN
(14) SCLKIN
(13) SLOAD
5−Bit Shift Register
EQEN D0 D1 D2 D3
D/A Latch
EQEN
(EQualizer ENable)
4−Bit
DAC
0
2:1
MUX
EQ
1
Pre−Emphasis
Control
SDOUT (6)
SCLKOUT (7)
Q (11)
Q (10)
CML Output
Figure 2. Detailed Block Diagram of NB7VPQ16M
Q Low
Q High
Bit n −1
Q
0V
Q High
Q Low
Bit n
Q High
Q Low
Bit n+1
Q Low
Q High
Bit n+2
PE = 0dB
PE = −12dB
20%
80%
V_OD0dB
V_ODPE
Q
t_PE
X130ps
PE = 20log(V_ODPE/V_OD0dB)
V_OD0dB − Differential Output Voltage without Pre−Emphasis
V_ODPE − Differential Output Voltage with Pre−Emphasis
Figure 3. Illustration of Output Waveform Definition
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