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ONET1191V Datasheet, PDF (12/22 Pages) Texas Instruments – 11.3-GBPS DIFFERENTIAL VCSEL DRIVER
ONET1191V
SLLS750A – AUGUST 2006 – REVISED SEPTEMBER 2006
www.ti.com
AC ELECTRICAL CHARACTERISTICS
Over recommended operating conditions with 50-Ω output load, open-loop operation, IMODC = 12 mA, IBIASC = 6 mA, and
RRZTC = 28.7 kΩ, unless otherwise noted. Typical operating condition is at VCC = 3.3 V and TA = 25°C.
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
tr-OUT
tf-OUT
IMOD-MAX
Output rise time
20%–80%, tr-IN < 40 ps, 50-Ω load
Output fall time
20%–80%, tf-IN < 40 ps, 50-Ω load
Control bit MODR = 1, 50-Ω load
Maximum modulation current
Control bit MODR = 0, 50-Ω load
20
30 ps
25
30 ps
36
45
mA
18
27
Control bit MODR = 1, 50-Ω load
IMOD-STEP Modulation current step size Control bit MODR = 0, 50-Ω load
175
µA
100
Control bit EQENB = 1, K28.5 pattern at 11.3 Gbps
DJ
Deterministic output jitter
Control bit EQENB = 0, K28.5 pattern at 11.3 Gbps,
maximum equalization with 300-mm FR4 trace
4
12
10
20 psp-p
RJ
τAPC
tOFF
tON
tINIT1
tINIT2
Random output jitter
APC time constant
Transmitter disable time
Disable negate time
Power-on to initialize
Initialize to transmit
50-Ω load
CAPC = 0.01 µF, IPD = 100 µA, PD coupling ratio CR = 40(1)
Rising edge of DIS to IBIAS ≤ 0.1 × IBIAS-NOMINAL (1)
Falling edge of DIS to IBIAS ≥ 0.9 × IBIAS-NOMINAL(1)
Power-on to registers ready to be loaded
Register load STOP command to part ready to transmit valid
data (1)
0.5
0.8 psRMS
200
µs
1
5 µs
1 ms
1
10 ms
2 ms
tRESET
tFAULT
DIS pulse duration
Fault assert time
Time DIS must held high to reset part(1)
Time from fault condition to FLT high(1)
100
ns
50 µs
(1) Assured by simulation over process, supply, and temperature variation
TYPICAL CHARACTERISTICS
Typical operating condition is at VCC = 3.3 V, TA = 25°C, IBIASC = 6 mA, IMODC = 12 mA, MODR = 0 (unless otherwise noted).
DETERMINISTIC JITTER
vs
MODULATION CURRENT
8
DETERMINISTIC JITTER
vs
TEMPERATURE
8
6
6
4
4
2
2
0
0
5
10
15
20
−40 −20 0
20 40 60 80 100
Modulation Current − mA
G001
TA − Free-Air Temperature − °C
G002
Figure 5.
Figure 6.
12
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