Datasheet

DS64BR401
SNLS304G –JUNE 2009–REVISED APRIL 2013 www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
Over recommended operating supply and temperature ranges with default register settings unless other specified.
(1)
Symbol Parameter Conditions Min Typ Max Units
V
OCM
Output Common-Mode Single-ended measurement DC-Coupled with
V
DD
–
Voltage 50Ω termination, V
1.4
(2)
T
TX-RF
Transmitter Rise/ Fall Time 20% to 80% of differential output voltage,
measured within 1” from output pins, 67 85 ps
(2) (4)
, Figure 2
T
RF-DELTA
Tx rise/fall mismatch 20% to 80% of differential output voltage,
(2)
0.1 UI
(4)
RL
TX-DIFF
Tx Differential Return Loss Repeating 1100b (D24.3) pattern,
(SDD22), VOD = 1.0 Vp-p, -11
(2)
150 MHz – 1.5 GHz
dB
150 MHz – 3.0 GHz -10
150 MHz – 6.0 GHz -5
RL
TX-CM
Tx Common Mode Return Repeating 1100b (D24.3) pattern,
Loss VOD = 1.0 Vp-p,
(2)
-10 dB
(SCC22) 50 MHz – 3.0 GHz
R
TX-IB
Tx Impedance Balance Repeating 1100b (D24.3) pattern,
(SDC22) VOD = 1.0 Vp-p,
(2)
-30 dB
50 MHz – 3.0 GHz
I
TX-SHORT
Tx Output Short Circuit OA/B_n = GND
90 mA
Current Limit
R
OTD
Output Differential DC tested,
(5)
Impedance between OUT+ 85 100 125 Ω
and OUT-
R
OTIB
Output Differential DC tested,
(5)
5 Ω
Impedance Imbalance
R
OCM
Output Common Mode DC tested,
(5)
20 25 35 Ω
Impedance
V
TX-CM-DELTA
Common Mode Voltage
(6)
Delta between active burst
±40 mV
and electrical Idle of an
OOB signal
T
DI
Max time to transition to VIN = 800 mVp-p, repeating 1100b (D24.3)
valid electrical idle after pattern at 3 Gbps,
6.5 9.5 ns
leaving active burst in OOB SD_TH = Float, Figure 4
signaling
T
ID
Max time to transition to VIN = 800 mVp-p, repeating 1100b (D24.3)
valid active burst after pattern at 3 Gbps,
5.5 8 ns
leaving idle in OOB SD_TH = Float, Figure 4
signaling
T
PD
Differential Propagation Propagation delay measured at midpoint
Delay (Low to High and High crossing between input to output, Figure 3, 150 200 250 ps
to Low Edge) EQx[1:0] = 11, DEMx[1:0] = −6 dB
EQx[1:0] = OFF, DEMx[1:0] = 0 dB 120 170 220 ps
T
LSK
Lane to Lane Skew in a V
DD
= 2.5 V, T
A
= 25°C
27 ps
Single Part
T
PPSK
Part to Part Propagation V
DD
= 2.5 V, T
A
= 25°C
35 ps
Delay Skew
EQUALIZATION
DJ1 Residual Deterministic Jitter Tx Launch Amplitude = 0.8 to
at 6.4 Gbps 1.2 Vp–p, 40” 4–mil FR4 trace,
EQx[1:0] = 0F, DEMx[1:0] = 0 dB, 0.12 0.25 UI
P-P
VOD = 1.0 Vp-p, K28.5,
SD_TH = float,
(5)
(5) Typical values represent most likely parametric norms at V
DD
= 2.5V, T
A
= 25°C., and at the Recommended Operation Conditions at the
time of product characterization and are not verified.
(6) Common-mode voltage (VCM) is expressed mathematically as the average of the two signal voltages with respect to local ground.VCM
= (A + B) / 2, A = OUT+, B = OUT-.
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