DS125BR800 Datasheet, PDF (8/59 Pages) Texas Instruments – Low-Power 12.5-Gbps 8-Channel Repeater With Input Equalization and Output De-Emphasis

DS125BR800
SNLS426E – AUGUST 2012 – REVISED JANUARY 2015
www.ti.com
Electrical Characteristics^(1)(2)(3) (continued)
PARAMETER
TEST CONDITIONS
V_{TX-DE-RATIO_6} TX de-emphasis ratio
VOD = 1.0 Vp-p,
DEM0 = R, DEM1 = R
PCIe Gen-1 or PCIe Gen-2 and SAS/SATA (up to 6
Gbps)
T_TX-DJ
Deterministic Jitter
VID = 800 mV, PRBS15 pattern, 8.0 Gbps, VOD =
1.0 V, EQ = 0x00, DE = 0 dB, (no input or output
trace loss)
T_TX-RJ
Random Jitter
VID = 800 mV, 0101 pattern, 8.0 Gbps, VOD = 1.0
V, EQ = 0x00, DE = 0 dB, (no input or output trace
loss)
T_TX-RISE-FALL
T_RF-MISMATCH
RL_TX-DIFF
TX rise/fall time
TX rise/fall mismatch
TX Differential return loss
20% to 80% of differential output voltage
20% to 80% of differential output voltage
0.05 - 7.5 GHz
7.5 - 15 GHz
RL_TX-CM
Z_TX-DIFF-DC
V_TX-CM-AC-PP
TX Common mode return loss
DC differential TX impedance
TX AC common mode voltage
0.05 - 5 GHz
VOD = 1.0 Vp-p,
DEM0 = 1, DEM1 = 0
I_TX-SHORT
TX short circuit current limit
Total current the transmitter can supply when
shorted to VDD or GND
V_TX-CM-DC-
ACTIVE-IDLE-
DELTA
V_{TX-CM-DC-LINE-}
DELTA
T_TX-IDLE-DATA
Absolute delta of DC common mode
voltage during L0 and electrical idle
Absolute delta of DC common mode
voltgae between TX+ and TX-
Max time to transition to differential
DATA signal after IDLE
VID = 1.0 Vp-p, 8 Gbps
T_TX-DATA-IDLE Max time to transition to IDLE after
differential DATA signal
T_PLHD/PHLD
Differential Propagation Delay
T_LSK
Lane to lane skew
T_PPSK
Part to part propagation delay skew
EQUALIZATION
VID = 1.0 Vp-p, 8 Gbps
EQ = 00⁽⁵⁾
T = 25°C, VDD = 2.5 V
T = 25°C, VDD = 2.5 V
DJE1
Residual deterministic jitter at 12 Gbps 30in 5mils FR4, VID = 0.6 Vp-p,
PRBS15, EQ = 0x07, DEM = 0 dB
DJE2
Residual deterministic jitter at 8 Gbps 30in 5mils FR4, VID = 0.6 Vp-p,
PRBS15,EQ = 0x07, DEM = 0 dB
DJE3
Residual deterministic jitter at 5 Gbps 30in 5mils FR4, VID = 0.6 Vp-p,
PRBS15, EQ = 0x07, DEM = 0 dB
DJE4
Residual deterministic jitter at 12 Gbps 5m 30 awg cable, VID = 0.6 Vp-p,
PRBS15, EQ = 0x07, DEM = 0 dB
DJE5
Residual deterministic jitter at 5 Gbps 8m 30 awg cable, VID = 0.6 Vp-p,
PRBS15, EQ = 0x0F, DEM = 0 dB
DE-EMPHASIS — PCIe Gen-1 or PCIe Gen-2 and SAS/SATA (up to 6 Gbps)
DJD1
Residual deterministic jitter at 12 Gbps Input Channel: 20in 5mils FR4,
Output Channel: 10in 5mils FR4
VID = 0.6 Vp-p,
PRBS15, EQ = 0x03,
VOD = 1.0 Vp-p, DEM = –3.5 dB
MIN TYP MAX UNIT
-6
dB
0.05
UIpp
0.3
ps
RMS
35 45
0.01
–15
–5
–10
100
ps
0.1 UI
dB
dB
dB
Ω
100 mVp-p
20
mA
100 mV
25 mV
3.5
ns
6.2
ns
200
ps
25
ps
40
ps
0.18
UIpp
0.11
UIpp
0.07
UIpp
0.25
UIpp
0.33
UIpp
0.1
UIpp
(5) Propagation Delay measurements will change slightly based on the level of EQ selected. EQ = 00 will result in the longest propagation
delays.
8
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