Rainbow Electronics MAX3983 - Manual (Page 3)

MAX3983
Quad Copper-Cable Signal Conditioner
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ELECTRICAL CHARACTERISTICS (continued)
(V CC = +3.0V to +3.6V, T A = 0°C to +85°C. Typical values are at V CC = +3.3V and T A = +25°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
TX SECTION (CABLE DRIVER)
PC Board Input Swing
Measured differentially at the signal source
(Note 1)
800 1600 mV
P-P
Input Resistance TX_IN[1:4]+ to TX_IN[1:4]-, differential 85 100 115 Ω
Input Return Loss 100MHz to 2GHz (Note 1) 10 17 dB
TX_ENABLE = high (Notes 1, 2) 1300 1500 1600
Output Swing
TX_ENABLE = low 30
mV P-P
Output Resistance
TX_OUT[1:4]+ or TX_OUT[1:4]- to V CC , single
ended
42 50 58 Ω
Output Return Loss 100MHz to 2GHz (Note 1) 10 13 dB
Output Transition Time t r , t f 20% to 80% (Notes 1, 3) 80 ps
Random Jitter (Notes 1, 3) 1.6 ps RMS
TX_PE1 TX_PE0
0 0 3
0 1 6
1 0 9
Output Preemphasis See Figure 1
1 1 12
dB
Source to
TX_IN
TX_OUT to
Load
TX_PE1 TX_PE0
1m, 28AWG 0 0
5m, 28AWG 0 1
10m, 24AWG 1 0
Residual Output Deterministic
Jitter at 2.5Gbps (Notes 1, 4, 5)
6-mil FR4 ≤
20in
15m, 24AWG 1 1
0.10 0.15 UI P-P
Source to
TX_IN
TX_OUT to
Load
TX_PE1 TX_PE0
1m, 28AWG 0 0
5m, 28AWG 0 1
10m, 24AWG 1 0
Residual Output Deterministic
Jitter at 3.2Gbps (Notes 1, 4, 5)
6-mil FR4 ≤
20in
15m, 24AWG 1 1
0.15 0.20 UI P-P
Signal-Detect Assert Level TX_IN for TX_SD = high (Note 6) 800 mV P-P
Signal-Detect Off TX_IN for TX_SD = low (Note 6) 200 mV P-P
RX SECTION (CABLE RECEIVER)
Cable Input Swing
Measured differentially at the signal source
(Note 1)
1000 1600 mV P-P
Input Vertical Eye Opening
Measured differentially at the input of the
MAX3983 (Note 1)
175 1600 mV P-P
Input Resistance RX_IN[1:4]+ to RX_IN[1:4]-, differential 85 100 115 Ω
Input Return Loss 100MHz to 2GHz (Note 1) 10 18 dB