60

TIP IDLE VOLTAGE

--4-

V

-<0-

V

RING IDLE VOLTAGE

-

-24

-

V

-

>-28

-

V

Overload Level

3.1

-

-

Output Offset Voltage

-60

-

60

mV

Output Impedance (Guaranteed by Design)

0.2kHz < f < 03.4kHz

-

5

20

Ω

0.3kHz < f < 03.4kHz (Note 14, Figure 7)

0.98

1.0

1.02

V/V

FIGURE 6. TWO-WIRE RETURN LOSS

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

OUTPUT OFFSET VOLTAGE, 2-WIRE TO 4-WIRE

VOLTAGE GAIN AND HARMONIC DISTORTION

4-WIRE RECEIVE PORT (RSN)

DC Voltage

-

0

-

V

Design)

0.3kHz < f < 3.4kHz

-

-

20

Ω

Current Gain-RSN to Metallic

0.3kHz < f < 3.4kHz (Note 15, Figure 8)

980

1000

1020

Ratio

FREQUENCY RESPONSE (OFF-HOOK)

2-Wire to 4-Wire

0.3kHz < f < 3.4kHz (Note 16, Figure 9)

-0.2

-

0.2

dB

4-Wire to 2-Wire

0.3kHz < f < 3.4kHz (Note 17, Figure 9)

-0.2

-

0.2

dB

4-Wire to 4-Wire

0.3kHz < f < 3.4kHz (Note 18, Figure 9)

-0.2

-

0.2

dB

INSERTION LOSS

2-Wire to 4-Wire

0dBm, 1kHz (Note 19, Figure 9)

-0.2

-

0.2

dB

4-Wire to 2-Wire

0dBm, 1kHz (Note 20, Figure 9)

-0.2

-

0.2

dB

GAIN TRACKING (Ref = -10dBm, at 1.0kHz)

2-Wire to 4-Wire

-40dBm to +3dBm (Note 21, Figure 9)

-0.1

-

0.1

dB

2-Wire to 4-Wire

-55dBm to -40dBm (Note 21, Figure 9)

-

±0.03

-

dB

4-Wire to 2-Wire

-40dBm to +3dBm (Note 22, Figure 9)

-0.1

-

0.1

dB

Electrical Specifications

pin number references in the figures refer to the 28 lead PLCC package. (Continued)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

300k

Ω

600k

Ω

R

R

TIP

27

19

RING

28

RSN

16

600k

Ω

300k

Ω

C

600

Ω

23mA

2.16

µF

TIP

27

19

RING

28

RSN

16

HC5526