PBL38772/1 Ericsson, PBL38772/1 Datasheet

PBL38772/1

Manufacturer Part Number

PBL38772/1

Description

Subscriber Line Interface Circuit

Manufacturer

Ericsson

Datasheet

1.PBL387721.pdf (14 pages)

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Bonase Electronics (HK) Co., Limited

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PBL38772/1R1

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MICRON

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PBL38772/1R1

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Part Number:

PBL38772/1SO

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INFIONEON

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Key Features

• On-chip high voltage ring generation

• Low on-hook power consumption in Active State

• Automatic switching between ringing battery (V

• Only +5V and Battery supplies needed

• Pulse metering and on-hook transmission

• UL-1950 and MTU compliant on-hook line voltage

• Programmable ring trip threshold

• 3.3V compatible logic interface

• Silent or fast polarity reversal

• 28-pin SOIC package

Applications

• Cable modems

• Voice over DSL (VoDSL)

• Terminal adapters

• ISDN Terminal adapters (NT1+)

• Voice over IP (VoIP)

• Routers

• Integrated Access Devices (IAD)

• Other short loop applications

Description

(SLIC) is a 90 V bipolar integrated circuit with on-chip

high voltage ring generation for use in short loop

applications. The PBL 387 72/1 SLIC has been

optimized for low power consumption, low total line

interface cost and for a high degree of flexibility meeting

worldwide requirements.

signal of any waveform (e.g. sinewave, trapezoidal, etc.)

- Balanced, up to 80 V

- Any ring waveform

- 5 REN ringing load

- Short circuit safe

- Automatic gain control of ringing signal

(65mW @ V

talk battery (V

The PBL 387 72/1 SLIC supplies a balanced ringing

The PBL 387 72/1 Subscriber Line Interface Circuit

Bat

TBat

=-80V)

)

Peak

PBL 387 72/1 shortform

Bat

Advance Information

) and

Rev. P5

V T B AT

R IN G X

VBAT

B G N D

V T B

H P

up to 80 V

load of up to 5REN

to the subscriber loop, sourced from the talk battery. The on-

hook line voltage of 43 V to 56 V is derived from the ring

battery. All battery switching is internal to the device and is

automatic.

control for the ring signal (AGCR) keeps the level always

adjusted to the maximum, that can be sourced from the

available dc ringing battery.

detection functions. The PBL 387 72/1 is compatible with loop

start signaling.

signal conversion is accomplished by the SLIC in conjunction

with any standard codec.

programmable (via hardware or software) and may be

complex or real for worldwide compliance.

wire line voltage exceeds 56 V.

The PBL 387 72/1 SLIC is available in a surface mount 28

SOIC package.

Figure 1. Block diagram

The PBL 387 72/1 supplies programmable constant current

To further reduce power consumption the automatic gain

The SLIC incorporates loop current, ground key and ring trip

Two- to four-wire and four- to two-wire voice frequency (vf)

Tip and ring voltages are UL-1950 compliant, i.e. no two-

The line terminating impedance and balance impedance is

T w o -w ire

In te rfa ce

Feb. 14, 2001

Peak

(85 V dc supply) to the subscriber line across a

Interface Circuit

Subscriber Line

T ra n sm issio n

Su p p re ssio n

VF S ig n a l

L o n g itu d in a l

C o n tro lle r

R in g T rip

O ff-h o o k

D e te cto r

C o n tro l

R in g in g

PBL 387 72/1

C o n tro l

In p u t

1 of 14

C 1

C 2

C 3

D E T

P L C

L P

R E F

S P R

P L D

V T X

R S N

V C C

A G N D

P R T

C R IN G

V R

Related parts for PBL38772/1

PBL38772/1 Summary of contents

Page 1

Key Features • On-chip high voltage ring generation - Balanced Peak - Any ring waveform - 5 REN ringing load - Short circuit safe - Automatic gain control of ringing signal • Low on-hook power ...

Maximum Ratings Parameter Temperature, Humidity Storage temperature range Operating temperature range Operating junction temperature range, Note 1 Power supply, -40°C T Amb V with respect to AGND CC V with respect to A/BGND TBat V with respect to BGND, ...

Page 3

Electrical Characteristics -40 °C T +85 °C, V Amb current is positive if flowing into a pin unless stated otherwise. otherwise specified. Parameter ...

Page 4

Parameter Four-wire to longitudinal balance • Log FLE V LO Two-wire return loss TRX • Log | TRX L TIPX idle ...

Page 5

Parameter Frequency response Two-wire to four-wire, g 2-4 Four-wire to two-wire, g 4-2 Four-wire to four-wire, g 4-4 Insertion loss Two-wire to four-wire, G 2-4 Four-wire to two-wire, G 4-2 Gain tracking Two-wire to four-wire Four-wire to two-wire Noise ...

Page 6

Parameter Ring signal input, VR Bias current, I VRdc Bias voltage, V VRdc Input impedance Gain TIPX-RINGX, G R-2 Battery feed characteristics Constant loop current, I LConst Loop current detector Programmable threshold, I LTh Ring ...

Page 7

Parameter Power supply rejection ratios 4-wire port 4-wire port TBat 4-wire port Bat Temperature guard Junction threshold temperature, T Thermal Resistance Junction to pins, , Note ...

Page 8

Figure 7. Pin configuration, 28 pin SOIC package, top view SLIC Operating States State ...

Page 9

Pin Description 28L SOIC Symbol BGND 6 RINGX 7 TIPX 8 VTBAT 9 VBAT 10 VTB SPR CRING 16 REF 17 PLC ...

Page 10

Functional Description and Applications Information Introduction The Figure 8. diagram shows the PBL 387 72 typical application with a non-programmable, Combo I, codec. The PBL 387 72/1 can equally well be used with software programmable codecs. The ...

Page 11

RING TIP Figure 8. Single channel subscriber line interface with PBL 387 72/1 and Combo I type codec. RESISTORS: (values ...

Page 12

A Figure 9. Battery feed characteristic A: I (@ Lconst FEED E: I 5.5mA , (@I = App ...

Page 13

Mechanical drawing 28 SOIC 4 DataSheet U .com Advance Information PBL 387 72/1 shortform Rev. P5 Feb. 14, 2001 ...

Page 14

... No license is granted by implication or otherwise under any patent or patent rights of Ericsson Microelectronics AB. These products are sold only according to Ericsson Microelectronics general conditions of sale, unless otherwise confirmed in writing. Specifications subject to change without notice. © ...

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