5

TRANSMISSION PARAMETERS - 4-WIRE TO 4-WIRE ABSOLUTE DELAY

Absolute Delay

normal

reverse

600

Ω

-48V

1020Hz

0dBm

1.5

µs

TRANSMISSION PARAMETERS - OVER LOAD LEVEL (Figures 14, 15)

Receive Over Load Level at 4W

and 2W

normal

reverse

600

Ω

-42V

1% THD

1020Hz

2.5

-

-

Transmit Over Load Level at 2W

and 4W

normal

reverse

600

Ω

-42V

1% THD

1020Hz

2.15

-

-

TRANSMISSION PARAMETERS - LONGITUDINAL IMPEDANCE (Figure 16)

Longitudinal Impedance per Wire

normal

reverse

-

-48V

40Hz to

100Hz

-50-

Ω

TRANSMISSION PARAMETERS - LONGITUDINAL CURRENT CAPABILITY (Figure 17)

Longitudinal Current Limit per Wire

normal

reverse

-

-42V

Triangle

Waveform

40Hz to

100Hz

15

-

-

TRANSMISSION PARAMETERS - LONGITUDINAL BALANCE (Figure 18)

2-Wire Longitudinal Balance

normal

reverse

368

Ω +

368

Ω

-48V

300Hz

1020Hz

3400Hz

42

48

48

62.2

58.7

69.5

-dB

dB

dB

4-Wire Longitudinal Balance

normal

reverse

368

Ω +

368

Ω

-48V

300Hz

1020Hz

3400Hz

42

48

48

66.0

67.2

77.0

-dB

dB

dB

POWER SUPPLY REJECTION RATIO (Figure 19)

normal

reverse

600

Ω

-48V

300Hz

30

42

-

dBC

normal

reverse

600

Ω

-48V

300Hz

30

42

-

dBC

normal

reverse

600

Ω

-48V

300Hz

20

33

-

dBC

normal

reverse

600

Ω

-48V

3420Hz

20

24

-

dBC

normal

reverse

600

Ω

-48V

2500Hz

20

30

-

dBC

normal

reverse

600

Ω

-48V

2500Hz

20

32

-

dBC

AGND = BGND = RGND = 0V, Min-Max Parameters are Over Power Supply and Operating Temperature Range. All Transmission Parame-

ters are Specified at 600

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

MODE

LOAD

OTHER

CONDITIONS

FREQ/

LEVEL

HC5520