SP506CF datasheet(25/30 Pages) SIPEX

25 / 30 page

SP505/6/7APN/03

SP505, SP506, SP507 Application Note

Paragraph 6.3.2 – V.11 Circuits

6.3.2.1 Generator open circuit output voltage

The magnitude of the driver's outputs for:

a) between point A and point B

b) either point A or point B to point C

shall be less than or equal to 12.0V for either

binary state when terminated with a 3.9k

Ω

resistor between points A and points B.

6.3.2.3 Generator output rise/fall time

The driver outputs' transition from one binary

point to another shall be less than or equal to 0.3

of the nominal bit duration (t

b). This is measured

between 10% and 90% of its steady state value

and with a "Y" resistor configuration. The resistor

network contains two 50

Ω resistors in series

with a center-tap 50

Ω resistor between the two

series resistors to ground.

6.3.2.4 Generator polarities

The driver's point A output shall be:

a) greater than point B (V

A–VB > 0V) when the

signal condition 0 is transmitted for data circuits,

or ON for control circuits; and

b) less than point B (V

A–VB < 0V) when the

signal condition 1 is transmitted for data circuits,

or OFF for control circuits.

Figure 42. V.11 Driver Open Circuit Voltage

6.3.2.2 Generator terminated output voltage

The magnitude of the driver's outputs for:

a) between point A and point B

b) either point A or point B to point C

shall be greater than or equal to 2.0V for either

binary state when terminated with two 50

Ω

resistors connected in series between point A

and point B.

The center point of the two 50

Ω resistors shall

measure less than or equal to 3.0V with respect

to point C.

Figure 43. V.11 Driver Output Terminated Voltage

Figure 44. V.11 Transition Time

Paragraph 6.3.3 – V.28 Circuits

6.3.3.1 Generator open circuit output voltage

The single-ended generator or driver's output

(point A), for either binary state, shall be less

than or equal to 25.0V with respect to ground

(point C).

6.3.1.2 Generator terminated output voltage

The driver output's magnitude, for either binary

state, shall be greater than or equal to 3.0V when

terminated with a 3k

Ω resistor to ground.

6.3.1.3 Generator output rise/fall time

The driver output's transition from one binary

point to another shall be less than or equal to 3%

or 1.0ms, whichever is greater, of the nominal

bit duration (t

b). This is measured between +3V

and -3V of the transition and with 3k

Ω resistor

// 2500pF loads to ground.

3.9k

Ω

OCA

OCB

Ω

Oscilloscope

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