P3176

ETALDOC 575/9

Page 2 of 4

February 2006

SPECIFICATIONS

Electrical

At T = 25ºC and as circuit Fig. 2 unless otherwise stated.

Parameter

Conditions

Min

Typ

Max

Units

Insertion Loss

-

2.5

-

dB

Frequency Response

LF -3dB cutoff

HF -3dB cutoff

100Hz - 4kHz

-

-

-

10

6

±0.6

-

-

-

Hz

kHz

dB

Return Loss

200Hz - 4kHz

16

-

-

dB

Third Harmonic

Distortion

(1)

450Hz 0dBm in line

150Hz -3dBm in line

-

-

-85

-78

-

-

dBm

dBm

Saturation

Excitation 50Hz

250Vrms.

Output voltage

across line

-

-

-

-

10

65

Vrms

Vpeak

Voltage

isolation

(2)

50Hz

DC

3.88

5.5

-

-

-

-

kVrms

kV

Operating range:

Functional

Storage

Ambient temperature

-25

-40

-

-

+85

+125

ºC

ºC

Lumped equivalent circuit parameters as Fig. 1

(3)

Sum of windings

180

-

220

Ω

Leakage inductance

ΔL

22.3

-

27.7

mH

Shunt inductance Lp

(4)

10mV 200Hz

8.5

11

-

H

Shunt loss Rp

(4)

10mV 200Hz

17

25

-

k

Ω

Notes

1.

Third

harmonic

typically

exceeds

other

harmonics by 10dB.

2.

Components are 100% tested at 6.5kV DC.

3.

Caution: do not pass DC through windings.

Telephone line current, etc. must be diverted

using semiconductor line hold circuit.

4.

At signal levels greater than 100mV, Lp will

increase and Rp will decrease slightly but the

effect is usually favourable to the return loss

characteristic.

Equivalent Circuit

IDEAL

1:1

LINE

EQUIPMENT

Fig 1