Max3983 quad copper-cable signal conditioner, Electrical characteristics (continued) – Rainbow Electronics MAX3983 User Manual

Page 5

MAX3983

Quad Copper-Cable Signal Conditioner

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

= +3.0V to +3.6V, T

= 0°C to +85°C. Typical values are at V

= +3.3V and T

= +25°C, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Source to

TX_IN

TX_OUT to RX_IN

TX_PE1

TX_PE0

RX_OUT to Load

RX_PE

1m, 24AWG

5in

15m, 24AWG

20in

0.20

0.25

Residual Output Deterministic
Jitter at 3.2Gbps
(Notes 1, 12, 13, 14)

6-mil FR4

≤

20 in

20m, 24AWG

20in

0.25

0.3

P-P

Note 1:

Guaranteed by design and characterization.

Note 2:

Measured with 2in of FR4 through InfiniBand connector with TX_PE1 = TX_PE0 =1.

Note 3:

Measured at the chip using 0000011111 or equivalent pattern. TX_PE1 = TX_PE0 = 0 for minimum preemphasis.

Note 4:

All channels under test are not transmitting during test. Channel tested with XAUI CJPAT, as well as this pattern: 19 zeros,
1, 10 zeros, 1010101010 (D21.5 character), 1100000101 (K28.5+ character), 19 ones, 0, 10 ones, 0101010101 (D10.2
character), 0011111010 (K28.5- character).

Note 5:

Cables are unequalized, Amphenol Spectra-Strip 24AWG and 28AWG or equivalent equipped with Fujitsu “MicroGiga”
connector or equivalent. All other channels are quiet. Residual deterministic jitter is the difference between the source jit-
ter and the output jitter at the load. The deterministic jitter (DJ) at the output of the transmission line must be from media-
induced loss and not from clock-source modulation. Depending upon the system environment, better results can be
achieved by selecting different preemphasis levels.

Note 6:

Tested with a 1GHz sine wave applied at TX_IN under test with less than 5in of FR4.

Note 7:

Measured with 3in of FR4 with RX_PE = 1.

Note 8:

Measured at the chip using 0000011111 or equivalent pattern. RX_PE = low (minimum). Signal source is 1V

P-P

with 5m,

28AWG InfiniBand cable.

Note 9:

All other receive channels are quiet. TX_ENABLE = 0. Channel tested with XAUI CJPAT as well as this pattern: 19 zeros,
1, 10 zeros, 1010101010 (D21.5 character), 1100000101 (K28.5+ character), 19 ones, 0, 10 ones, 0101010101 (D10.2
character), 0011111010 (K28.5- character).

Note 10: FR4 board material: 6-mil-wide, 100

Ω, edge-coupled stripline (tanδ = 0.022, 4.0 < ε

< 4.4).

Note 11: Tested with a 1GHz sine wave applied at RX_IN under test with less than 5in of FR4.
Note 12: Channel tested with XAUI CJPAT as well as this pattern: 19 zeros, 1, 10 zeros, 1010101010 (D21.5 character), 1100000101

(K28.5+ character), 19 ones, 0, 10 ones, 0101010101 (D10.2 character), 0011111010 (K28.5- character).

Note 13: Cables are unequalized, Amphenol Spectra-Strip 24AWG or equivalent equipped with Fujitsu “MicroGiga” connector or

equivalent. Residual deterministic jitter is the difference between the source jitter at point A and the load jitter at point B in
Figure 2. The deterministic jitter (DJ) at the output of the transmission line must be from media-induced loss and not from
clock-source modulation. Depending upon the system environment, better results can be achieved by selecting different
preemphasis levels.

Note 14: Valid with pattern generator deterministic jitter as high as 0.17UI

P-P