PBL 385 70

2

Figure 2. Test set up without rectifier

bridge.

Figure 3. Test set up with rectifier

bridge.

Figure 4. Circuit with external compon-

ents for test set up.

* Not used in test set up.

18 pin DIP package.

Maximum Ratings

Parameter

Symbol

Min

Max

Unit

Line voltage, t

V

L

018

V

Line current, continuous DIP

I

L

0

130

mA

Line current, continuous SO package

I

L

0

100

mA

Operating temperature range

T

Amb

-40

+70

°C

Storage temperature range

T

Stg

-55

+125

°C

No input should be set on higher level than pin 4 (+C).

+

= 350

Ω

+ LINE

- LINE

ARTIFICIAL

LINE

I L

V

2

V1

V

L

R = 0-4k

Ω

L

0 ohm when artificial

line is used

MUTE

PBL 385 70

with external

components

See fig. 4

Z

Mic = 350Ω

Z

Rec

MIC

REC

R

feed = 400Ω+400Ω

600

Ω

C

E = 48.5V

V 3

V4

C = 1

µF when artificial line is used

470

µF when no artificial line

DC2

I

V

DC1

V

DC2

5H+5H

+

I

M

+

+ LINE

- LINE

V

2

V

L

R = 0 - 4k

Ω

L

MUTE

PBL 385 70

with external

components

See fig. 4

Z

Mic

Z

Rec

MIC

REC

R

feed = 400Ω+400Ω

600

Ω

+

E = 50.0V

1

µF

V

M

Uz= 15-16V

5H+5H

DC2

I

V

DC1

= 350

Ω

= 350

Ω

I

M

17

14

2

3

11

12

13

18

16

AM

AT

5

AR

15

4

+

10

AD

1

PBL 385 70

7

9

Sense input

DTMF

input

+

6

Gain

regulation

Mic.

350

Ω

8

DC-supply

+

Mute

(active low)

DC-output for

external devices

2.7k

47

µF

*

*

18k

22k

100n

75

Ω

910

Ω

560

Ω

11k

100n

6.2k

11k

10

Ω

62k

47

µF

15n

Rec.

350

Ω

310

Ω

220n

-Line

+Line

910

Ω

47n

C1

C2

C3

C5

C6

C7

R1

R2

R4

R5

R6

R7

R8

R9

R10

R11

R12

R13

R3

R14

R16

C9