AD8158 查看數據表（PDF） - Analog Devices
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AD8158 Datasheet PDF : 36 Pages
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AD8158
Output Levels and Output Compliance
VOD ITOT IPRED VD_PEAK PE
PE
(mV) (mA) (mA) (mV) Boost (dB)
600 24 32 600 1.00 0.00
600 28 51 700 1.17 1.34
600 32 51 800 1.33 2.50
600 36 51 900 1.50 3.52
600 40 51 1000 1.67 4.44
600 44 54 1100 1.83 5.26
600 48 54 1200 2.00 6.02
AC-Coupled Transmitter
DC-Coupled Transmitter TX_HEADROOM = 0 TX_HEADROOM = 1
VH VL
VH VL
dVOCM VH VL Peak Peak dVOCM VH VL Peak Peak
(mV) (V) (V) (V) (V) (mV) (V) (V) (V) (V) Min VL (V)
Min VL (V)
600 1.5 0.9 1.5 0.9 300 1.8 1.2 1.8 1.2 0.7
0.5
700 1.4 0.8 1.45 0.75 350 1.75 1.15 1.8 1.1 0.7
0.5
400 1.7 1.1 1.8 1 0.7
0.5
450 1.65 1.05 1.8 0.9 0.7
0.5
500 1.6 1 1.8 0.8 0.7
0.5
550 1.55 0.95 1.8 0.7 0.7
0.5
0.7
0.5
1 Requires TX_HEADROOM = 1.
Table 21. Symbol Definitions
Symbol
Formula
VOD
25 Ω × IDC
VOD p-p
25 Ω × IDC × 2 = 2 × VOD
∆VOCM_DC-COUPLED
25 Ω × ITX/2 = VODPP/4 + (IPE/2 × 25)
∆VOCM_AC-COUPLED
50 Ω × ITX/2 = VODPP/2 + (IPE/2 × 50)
IDC
VOD/RTERM
IPE
N/A
ITX
IDC + IPE
VH
VTTO − ∆VOCM + VOD/2
VL
VTTO − ∆VOCM − VOD/2
Definition
Peak differential output voltage
Peak-to-peak differential output voltage
Output common-mode shift
Output common-mode shift
Output current that sets output level
Output current used for PE
Total transmitter output current
Maximum single-ended output voltage
Minimum single-ended output voltage
DVOCM
VTTO
VOD
VH
VOCM
VL
VOD p-p = 2 × VOD
VEE
Figure 40. VH, VL, VOCM
Rev. 0 | Page 25 of 36
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