Rainbow-electronics MAX3983 Manual do Utilizador descarregar pdf (Página 3)

MAX3983

Quad Copper-Cable Signal Conditioner

_______________________________________________________________________________________ 3

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

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

P-P

Output Resistance

TX_OUT[1:4]+ or TX_OUT[1:4]- to V

, single

ended

42 50 58 Ω

Output Return Loss 100MHz to 2GHz (Note 1) 10 13 dB

Output Transition Time t

, t

20% to 80% (Notes 1, 3) 80 ps

Random Jitter (Notes 1, 3) 1.6 ps

RMS

TX_PE1 TX_PE0

00 3

01 6

10 9

Output Preemphasis See Figure 1

11 12

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

1 2 3 4 5 6 7 8 ... 15 16

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