P2602

ETALDOC 258/8

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

-

-

1.5

dB

Frequency response

LF-3dB cutoff

HF-3dB cutoff

200Hz - 4kHz

-

10

-

-

-

-

50

-

±0.2

Hz

kHz

dB

Return Loss

200Hz - 4kHz

18

-

-

dB

Third Harmonic

Distortion

(1)

450Hz 0dBm

-

-72

-60

dBm

Balance

DC – 5kHz

Method TG25

80

-

-

dB

Saturation

Excitation 50Hz

250V rms.

Output voltage

across line

-

-

-

-

10

65

V rms

V peak

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)(5)

Sum of windings

120

-

148

Ω

Leakage inductance

ΔL

14.5

-

18

mH

Shunt inductance Lp

(4)

10mV 200Hz

10mV1kHz

2.8

-

8

2

-

-

H

H

Shunt loss Rp

(4)

10mV 200Hz

10mV 1kHz

5

7

-

-

-

-

k

Ω

k

Ω

Notes

1. Third harmonic typically exceeds other

harmonics by 20dB.

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 choke or 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.

5. Resistance imbalance between the two

Equivalent Circuit

Fig. 1

IDEAL

1:1

½ L

Δ

½ L

Δ