Data Sheet AS2523, AS2524, AS2524B

Revision 1.12, Preliminary

Page 7 of 19

Typical Characteristics of Line Loss Compensation (AS2523, AS2524B only)

The line-loss-compensation is programmable at the AS2523, not activated at the AS2524 and LLC high (45mA-75mA) activated

at the AS2524B.

Figure 1 Typical Tx Gain Characteristics Line Loss Compensation

Figure 2 Typical Rx Gain Characteristics Line Loss Compensation

f = 800 Hz

Ω

Ω

Ω

Ω

20

30

40

50

60

70

80

(mA)

DC Line

Current

No LLC (AS2523, AS2524)

LLC high

(AS2523,AS2524B)

LLC low

(AS2523)

Tx Gain

(dB)

29

30

31

32

33

34

35

f = 800 Hz

Ω

Ω

Ω

Ω

VOL = 0 dB (neutral)

20

30

40

50

60

70

80

(mA)

DC Line

Current

Rx Gain

(dB)

-2

-1

0

+1

+2

+3

+4

No LLC (AS2523, AS2524)

LLC high

(AS2523,AS2524B)

LLC low

(AS2523)