FIGURE 4. LONGITUDINAL TO METALLIC AND LONGITUDINAL TO 4-WIRE BALANCE

FIGURE 5. METALLIC TO LONGITUDINAL AND 4-WIRE TO LONGITUDINAL

BALANCE

2-Wire Return Loss

Forward and Reverse

0.2kHz to 1.0kHz (Note 12, Figure 6)

30

35

-

dB

Forward

Only

•

Forward

Only

•••

1.0kHz to 3kHz (Note 12, Figure 6)

23

25

-

dB

3kHz to 3.4kHz (Note 12, Figure 6)

21

23

-

dB

TIP IDLE VOLTAGE (User Programmable)

TIPX Idle Voltage

-2.6

-2.2

-1.8

V

Forward

Only

•

Forward

Only

•••

Forward and Reverse

RING IDLE VOLTAGE (User Programmable)

RINGX Idle Voltage

Forward and Reverse

-46.4

-45.3

-44.2

V

Forward

Only

•

Forward

Only

•••

-46.4

-45.3

-44.2

V

Forward and Reverse

41

43.1

45

V

Forward

Only

•

Forward

Only

•••

Forward and Reverse

36

38.1

-

V

NA

•

NA

NA

••

FIGURE 6. TWO-WIRE RETURN LOSS

FIGURE 7. OVERLOAD LEVEL (4-WIRE TRANSMIT PORT), OUTPUT OFFSET

VOLTAGE AND HARMONIC DISTORTION

Electrical Specifications

applies to the part. (NA) symbol used to indicate the test does not apply to the part. (Continued)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

HC55120

HC55121

HC55130/1 HC55140/1 HC55142/3 HC55150/1

C

2.16

F

TIP

RING

VRX

C

300



300



2.16

F

TIP

RING

VRX

R

R

TIP

RING

VRX

TIP

RING

VRX

600

