TLK2501 Datasheet, PDF (17/25 Pages) Texas Instruments – 1.5 TO 2.5 GBPS TRANSCEIVER

TLK2501
1.5 TO 2.5 GBPS TRANSCEIVER
SLLS427D − AUGUST 2000 − REVISED JULY 2003
transmitter/receiver characteristics
PARAMETER
TEST CONDITIONS
V(ODp)
VOD(pp_P)
VOD(d)
VOD(pp_d)
Vodp = |VTXP−VTXN|,
preemphasis VOD, direct
Differential, peak-to-peak output voltage
with preemphasis
Vodd = |VTXP−VTXN|,
deemphasis VOD, direct
Differential, peak-to-peak output voltage
with deemphasis
Rt = 50 Ω, RREF = 200 Ω, dc-coupled,
See Figure 12
V(term)
VID
V(cmr)
Ilkg(R)
CI
Transmit termination voltage range
Differential receiver input voltage
requirement, VID=|VRXP − V _RXN|
Receiver common mode voltage range,
(VRXP + VRXN)/2
Receiver input leakage current
Receiver input capacitance
Serial data total jitter (peak-to-peak)
Rt = 50 Ω, dc coupled, See Figure 15
Rt = 50 Ω, ac coupled, See Figure 16
Differential output jitter at 2.5 Gbps,
random + deterministic, PRBS pattern
Differential output jitter at 1.5 Gbps,
random + deterministic, PRBS pattern
tr, tf
Differential output signal rise, fall time
(20% to 80%)
RL = 50 Ω, CL = 5 pF, See Figure 12
Jitter tolerance
Differential input jitter, random +
determinisitc, PRBS pattern at zero
crossing
td(Tx _latency) Tx latency
td(Rx _latency) Rx latency
† _{UI is the time interval of one serialized bit.}
See Figure 3
See Figure 5
V(ODp)
V(ODd)
MIN NOM
840 1050
MAX UNIT
1260 mV
1680 2100
760 950
2520 mVp-p
1140 mV
1520
1500
200
1900
2280 mVp-p
VDD mV
VDD−VID/2 mV
mV
1500
VDD−VID/2 mV
−10
10 µA
2 pF
0.15
UI†
0.15
UI†
100 150
ps
0.60
UI†
34
38 bits
76
107 bits
V(term)
tr
Bit
Time
tf
Bit
Time
V(ODp)
V(ODd)
VOD(pp_d)
Figure 12. Differential and Common-Mode Output Voltage Definitions
VOD(pp_p)
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