3

PBL 385 41

Electrical Characterisics

At T

Ref.

Parameter

fig.

Conditions

Min

Typ

Max

Unit

Line voltage, V

L

2I

3.3

3.7

4.1

V

2I

11

13

15

V

Transmitting gain, note 1

2R

41

43

45

dB

2R

43.5

45.5

47.5

dB

2R

46

48

50

dB

Transmitting range of

2

1 kHz, R

900

Ω

3

5

7

dB

regulation

Transmitting frequency

2

200 Hz to 3.4 kHz

-1

1

dB

response

Transmitter input impedance, pin 3

2

1 kHz

13.5

17

20.5

k

Ω

Microphone input impedance

2

1.7//(2.7) note 3

k

Ω

Transmitter dynamic output

2

200 Hz - 3.4 kHz

1.5

V

p

≤ 2% distortion, I

Transmitter max output

2

200 Hz - 3.4 kHz

3

V

p

I

Transmitter output noise

2

Psoph-weighting, Rel 1 V

-75

dB

Psoph

Receiving gain, note 1

2

R

-18.5

-16.5

-14.5

dB

2

R

-16

-14

-12

dB

2

R

-13.5

-11.5

-9.5

dB

Receiving range of regulation

2

1 kHz, R

3

5

7

dB

Receiving frequency response

2

200 Hz to 3.4 kHz

-1

1

dB

Receiver input impedance

2

1 kHz,

38

k

Ω

Receiver output impedance

2

1 kHz,

3(+310)note 3

Ω

Receiver dynamic output

2

200 Hz - 3.4 kHz

0.5

V

p

note 2

≤ 2% distortion, I

Receiver max output

3

Measured with line rectifier

0.9

V

p

200 Hz - 3.4 kHz, I

V

Receiver output noise

2

A-weighting, Rel 1V

-85

dB

A

0 - 3 km, Ø = 0.4 mm

0 - 5 km, Ø = 0.5 mm,

Mute input voltage

2

0.3

V

at mute (active low)

DC

2

I

Pin 9

R

3.4

3.7

4.0

V

DC

2

I

Pin 8

I

2.1

2.35

2.6

V

I

1.95

2.2

2.6

V

DC-output pin 8 input

4

V

0.1

µA

leakage current (no supply)

DTMF transmitting gain

2

V

24.5

26.5

28.5

dB

DTMF input impedance

2

1 kHz

20

25

30

k

Ω

Notes

1. Adjustable to both higher and lower values with external components.

2. The dynamic output can be doubled, see applications information.

3. External resistor in the test set up.

4. The DC output voltage is reduced at low line voltage (see page 8).