DS64BR401

SNLS304G – JUNE 2009 – REVISED APRIL 2013

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ELECTRICAL CHARACTERISTICS (continued)

Over recommended operating supply and temperature ranges with default register settings unless other specified.

(1)

Symbol

Parameter

Conditions

Min

Typ

Max

Units

Output Common-Mode

Single-ended measurement DC-Coupled with

Voltage

50

Ω termination,

V

1.4

(2)

Transmitter Rise/ Fall Time

20% to 80% of differential output voltage,

measured within 1” from output pins,

67

85

ps

Tx rise/fall mismatch

0.1

UI

(4)

Tx Differential Return Loss

Repeating 1100b (D24.3) pattern,

(SDD22),

VOD = 1.0 Vp-p,

-11

(2)

150 MHz – 1.5 GHz

dB

150 MHz – 3.0 GHz

-10

150 MHz – 6.0 GHz

-5

Tx Common Mode Return

Repeating 1100b (D24.3) pattern,

Loss

-10

dB

(SCC22)

50 MHz – 3.0 GHz

Tx Impedance Balance

Repeating 1100b (D24.3) pattern,

(SDC22)

-30

dB

50 MHz – 3.0 GHz

Tx Output Short Circuit

OA/B_n = GND

90

mA

Current Limit

Output Differential

Impedance between OUT+

85

100

125

Ω

and OUT-

Output Differential

5

Ω

Impedance Imbalance

Output Common Mode

20

25

35

Ω

Impedance

Common Mode Voltage

(6)

Delta between active burst

±40

mV

and electrical Idle of an

OOB signal

Max time to transition to

VIN = 800 mVp-p, repeating 1100b (D24.3)

valid electrical idle after

pattern at 3 Gbps,

6.5

9.5

ns

leaving active burst in OOB

SD_TH = Float, Figure 4

signaling

Max time to transition to

VIN = 800 mVp-p, repeating 1100b (D24.3)

valid active burst after

pattern at 3 Gbps,

5.5

8

ns

leaving idle in OOB

SD_TH = Float, Figure 4

signaling

Differential Propagation

Propagation delay measured at midpoint

Delay (Low to High and High crossing between input to output, Figure 3,

150

200

250

ps

to Low Edge)

EQx[1:0] = 11, DEMx[1:0] =

−6 dB

EQx[1:0] = OFF, DEMx[1:0] = 0 dB

120

170

220

ps

Lane to Lane Skew in a

27

ps

Single Part

Part to Part Propagation

35

ps

Delay Skew

EQUALIZATION

DJ1

Residual Deterministic Jitter

Tx Launch Amplitude = 0.8 to

at 6.4 Gbps

1.2 Vp–p, 40” 4–mil FR4 trace,

EQx[1:0] = 0F, DEMx[1:0] = 0 dB,

0.12

0.25

VOD = 1.0 Vp-p, K28.5,

(5)

time of product characterization and are not verified.

(6)

Common-mode voltage (VCM) is expressed mathematically as the average of the two signal voltages with respect to local ground.VCM

= (A + B) / 2, A = OUT+, B = OUT-.

8

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