TLK2521 Datasheet, PDF (13/19 Pages) Texas Instruments – 1 to 2.5 Gbps TRANSCEIVER

transmitter/receiver characteristics
VOD(p)
PARAMETER
VOD(p) = |VTXP-VTXN|,
Preemphasis VOD, direct
VOD(pp−p)
VOD(d)
VOD(pp−d)
V(cmt)
VID
Vcmr
Iin
Cin
tt, tf
Differential, peak to peak output
voltage with preemphasis
VD(d) = |VTXP-VTXN|,
De-emphasis VOD, direct
Differential, peak to peak output
voltage with deemphasis
Transmit termination voltage range,
(VTXP + VTXN)/2
Receiver input voltage differential
VID= |RXP – RXN|
Receiver common-mode voltage
range, (VRXP + VRXN)/2
Receiver input leakage
Receiver input capacitance
Differential output signal rise,
fall time (20% to 80%)
Serial transmit data total jitter
(peak-to-peak)
Receive jitter tolerance
Tlatency
TX latency
Rlatency
RX latency
TLK2521
1 to 2.5 Gbps TRANSCEIVER
SLLS574B − JULY 2003 − REVISED JANUARY 2004
TEST CONDITION
DC coupled. Preemphasis = high, See Figure 8
DC coupled. Preemphasis = low, See Figure 8
DC coupled. Preemphasis = high, See Figure 8
DC coupled. Preemphasis = low, See Figure 8
DC coupled. See Figure 8
MIN
675
600
1350
1200
TYP
900
800
1800
1600
MAX
1280
1210
2560
2420
UNIT
mV
mV
500 750 1100 mV
DC coupled. See Figure 8
1000 1500 2200 mV
1000 1250 1400 mV
RL = 50 Ω, CL = 5 pF, See Figure 12
Differential output jitter, random + deterministic,
223−1 PRBS pattern at 2.5 Gbps
Total input jitter, PRBS pattern, permitted eye
closure at zero crossing
At 1 Gbps
At 2.5 Gbps
At 1 Gbps
At 2.5 Gbps
VOD(p)
VOD(d)
200
mV
1000
−10
VDD−
350
mV
10 µA
2 pF
100 150
ps
0.15
UI
0.5
UI
16
19 _Bit
18
21 ^times
88
95 _Bit
90
103 ^times
V(cmt)
VOD(pp_d) VOD(pp_p)
tf
tr
VOD(d)
Bit
Bit
Time
Time
VOD(p)
Figure 8. Differential and Common-Mode Output Voltage Definitions
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