PBL38571 Просмотр технического описания (PDF) - Ericsson

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PBL38571

High current Speech and Line interface Circuit

Ericsson  

PBL 385 71

Maximum Ratings

Parameter

Line voltage, t = 2 s

p

Line current, continuous, DIP (batwing) package

Line current, continuous, SO (batwing) package (dependent on mounting)

Operating temperature range

Storage temperature range

No input should be set on higher level than pin 6 (+C).

Symbol

Min

V

0

L

IL

0

IL

0

TAmb

-40

TStg

-55

Max

Unit

18

V

130

mA

120

mA

+70

°C

+125

°C

R = 0 - 4kΩ

L

0 ohm when artificial

Rfeed = 400Ω + 400Ω

line is used

ARTIFICIAL

IL

5H + 5H

+

C

LINE

+

V2

600Ω

E = 48.5V

VL

V1

C = 1µF when artificial line is used

470µF when no artificial line

MUTE

VM

IM

+ LINE MIC

PBL 38571

with external

components

See fig. 4

REC

V4

- LINE

Z Mic = 350Ω

V3

ZRec= 350Ω

Figure 2. Test set up without rectifier

bridge.

Rfeed = 400Ω + 400Ω

RL = 0 - 4kΩ

5H + 5H

+

1µF

Uz= 15-16V

+

E = 50.0V

V2

600Ω

V1

MUTE

VM

IM

IL

+ LINE

MIC

PBL 38571

VL

with external

components

See fig. 4

REC

V4

- LINE

ZMic = 350Ω

V3

ZRec = 350Ω

Figure 3. Test set up with rectifier

bridge.

R16 10

Mic.

350Ω 2.7k

AM

11

8

Mute

(active low)

Rg

7

9

R4

18k

R5

22k

1

PBL 385 71

AT

AR

15

R14

310Ω

REC

350Ω

3

2

C3

100nF

R7

910Ω

R6

75Ω

C5

100nF

R10

6.2k

R8

560Ω

R9

11k

14

C6

47nF

4,5,

12,13.

16

+6

R11

62k

R12

11k

R3

910Ω

+ C1

47µF

C2

15nF

+Line

-Line

Figure 4. Circuit with external compon-

ents for test set up.

2

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