PBL386402QNS datasheet(4/16 Pages) ERICSSON

Part #	PBL386402QNS

Description	Subscriber Line Interface Circuit

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Manufacturer	ERICSSON [Ericsson]

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PBL 386 40/2

4

Parameter

fig

Conditions

Min

Typ

Max

Unit

Four-wire to longitudinal balance, B

FLE

4

0.2 kHz < f < 3.4 kHz

40

50

dB

E

RX

B

FLE = 20 · Log

V

Lo

Two-wire return loss, r

|Z

TR + ZL|

r = 20 · Log

|Z

TR - ZL|

0.2 kHz < f < 1.0 kHz

30

35

dB

1.0 kHz < f < 3.4 kHz, Note 3

20

22

dB

TIPX idle voltage, V

Ti

active, I

L < 5 mA

- 1.3

V

RINGX idle voltage, V

Ri

active, I

L < 5 mA

V

Bat +3.0

V

tip open, I

L < 5 mA

V

Bat +3.0

V

TR

active, I

L < 5 mA

V

Bat +4.3

V

Four-wire transmit port (VTX)

Overhead voltage, V

TXO, IL > 18mA

5

Load impedance > 20 k

Ω,

2.7

V

Peak

1% THD, Note 4

On-hook, I

L < 5mA

1.1

V

Peak

Output offset voltage,

∆V

TX

-100

0

100

mV

Output impedance, z

TX

0.2 kHz < f < 3.4 kHz

15

50

Ω

Four-wire receive port (RSN)

Receive summing node (RSN) DC voltage

I

RSN = -55 µA

1.15

1.25

1.35

V

Receive summing node (RSN) impedance

0.2 kHz < f < 3.4 kHz

8

20

Ω

Receive summing node (RSN)

0.3 kHz < f < 3.4 kHz

current (I

RSN) to metallic loop current (IL)

200

ratio

gain,

α

RSN

Frequency response

Two-wire to four-wire, g

2-4

6

relative to 0 dBm, 1.0 kHz. E

RX = 0 V

0.3 kHz < f < 3.4 kHz

-0.20

0.10

dB

f = 8.0 kHz, 12 kHz, 16 kHz

-1.0

0.1

dB

Figure 4. Metallic to longitudinal and four-

wire to longitudinal balance

1

<< 150

Ω, R

LT =RLR =RL /2 =300Ω

ωC

R

T = 120 kΩ, RRX = 60 kΩ

Figure 5. Overhead voltage, V

TXO, four-

wire transmit port

1

<< R

L, RL = 600 Ω

ωC

R

T = 120 kΩ, RRX = 60 kΩ

Ref

PBL 386 40/2

TIPX

RINGX

RSN

VTX

RT

RRX

ERX

RLT

C

VTR

RLR

VLo

PBL 386 40/2

TIPX

RINGX

RSN

VTX

RT

RRX

RL

ILDC

C

EL

VTXO

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