L3000S

L3030

June 1997

SUBSCRIBER LINE INTERFACE KIT

PRELI MINARY DAT A

PROGRAMMABLE DC FEEDING RESIS-TAN-
CE AND LIMITINGCURRENT (fourvalues avai-
lable)

THREE OPERATING MODES :
STAND-BY, CONVERSATION, RINGING

NORMAL/BOOSTBATTERY, DIRECT/REVER-
SE POLARITY

SIGNALLING FUNCTION (off-hook/GND-key)

FILTERED

OFF-HOOK

DETECTION

STAND-BY (10ms)

QUICK OFF-HOOK DETECTION IN CONVER-
SATION (< 1ms) FOR LOW DIAL PULSE DE-
TECTION DISTORTION

HYBRID FUNCTION

RINGING GENERATION WITH QUASI ZERO
OUTPUT IMPEDANCE, ZERO CROSSING IN-
JECTION (no ext. relay needed) AND RING
TRIP DETECTION

AUTOMATIC RINGING STOP WHEN OFF-
HOOK IS DETECTED

PARALLEL AND SERIAL DIGITAL INTERFA-
CES

TELETAXE SIGNALINJECTION (2V

RMS

/5V

RMS

)

LOW NUMBER OF EXTERNAL COMPO-
NENTS

GOOD REJECTION OF THE NOISE ON BAT-
TERY VOLTAGE (20dB at 10Hz and 35dB at
1kHz)

POSSIBILITY TO WORK ALSO WITH HIGH
COMMON MODE CURRENTS

INTEGRATED THERMAL PROTECTION WITH
THERMAL OVERLOAD INDICATION

SURFACE MOUNT PACKAGE
(PLCC44 + PowerSO-20)

DESCRIPTION

PLCC44

FLEXIWATT15

The ST SLIC KIT (L3000S/L3030) is a set of solid
state devices designed to integrate main of the fun-
ctions needed to interface a telephone line. It con-
sists of 2 integrated devices : the L3000S line
interface circuit and the L3030 control unit.
This kit performs the main features of the BORSHT
functions :

Battery feed

Ringing

Signalling

Hybrid

Additional functions, such as battery reversal, extra
batteryuse, line overvoltagesensing and metering-
pulse injection are also featured ; most external
characteristics,as AC and DC impedances,are pro-
grammable with external components.The SLIC in-
jects ringing in balanced mode and for that, as well
as for the operation in battery boosted, a positive
battery voltage shall be available on the subscriber
card. As the right ringing signal amplification both in
voltage and in current is provided by SLIC, the ring
signal generatorshall only provide a low level signal
(0.285Vrms).
This kit is fabricated using a 140V Bipolar technolo-
gy for L3000S and a 12V Bipolar I

L technology for

L3030.
L3030 is available PLCC44 and L3000S in both
FLEXIWATT15 and PowerSO-20 for surfacemount
application.

This kit is suitable for all the following applications:
C.O. (CentralOffice),DLC (Digital LoopCarrier) and
high range PABX (Private Automatic Branch Ex-
change).

PowerSO20

slug-up

slug-down

ORDERING NUMBERS :

L3030 (PLCC44)
L3000SX-VM (FLEXIWATT15)
L3000SX (PowerSO20 slug-up)
L3000SX-77 (PowerSO20 slug-down)

1/29

PIN CONNECTIONS (top view)

PLCC44

FLEXIWATT15

B-

BIM

AGND

TIP

MNT

BGND

B+

N.C.

B-

D97TL290

REF

N.C.

RING

B-

PowerSO-20 (slug-down)

B-

BIM

BGND

MNT

B+

TIP

N.C.

RING

N.C.

REF

AGND

B-

D94TL125

PowerSO-20 (slug-up)

L3000S - L3030

2/29

PIN DESCRIPTION (L3000S)

FLEX.

�

PSO

�

Name

Description

TIP

A line termination output with current capability up to 100mA (I

is the current sourced

from this pin).

MNT

Positive Supply Voltage Monitor

Positive Battery Supply Voltage

BGND

Battery ground relative to the V

+ and the V

� supply voltages.

It is also the reference ground for TIP and RING signals.

Positive Power Supply + 5V

VIN

2 wire unbalanced voltage input.

VBIM

Output voltage without current capability, with the following functions :
- give an image of the total battery voltage scaled by 40 to the low voltage part.
- filter by an external capacitor the noise on V

�.

1, 10

11, 20

�

Negative Battery Supply Voltage

AGND

Analog Ground. All input signals and the V

supply voltage must be referred to this pin.

REF

Voltage reference output with very low temperature coefficient. The connected resistor
sets internal circuit bias current.

Digital signal input (3 levels) that defines device status with pin 12.

Digital signal input (3 levels) that defines device status with pin 11.

High precision scaled transversal line current signal.

100

Scaled longitudinal line current signal.

100

RING

B line termination output with current capability up to 100mA (I

is the current sunk into

this pin).

�

2, 18

N.C.

Not connected

Notes: 1) Unless otherwise specified all the diagrams in this datasheet refers to the FLEXIWATT15 pin connection.

2) All informations relative to the PowerSO-20 package option should be considered as advanced information on a new product

now in development or undergoing evaluation. Details are subject to change without notice.

L3000S - L3030

3/29

PIN DESCRIPTION (L3030)

Pin

Symbol

Function

TST

This pin is connected internally for test purpose. It should not be used as a tie point for
external components.

REF

Bias Set

AGND

Analog Ground

VSS

� 5V

VDD

+ 5V

N.C.

Not connected.

CZS

AC Feedback Input

ACF

AC Line Impedance Synthesis

ZAC

AC Impedance Adjustement

10
11
12

TST

These pins are connected internally for test purpose. It should not be used as a tie point
for external components.

VOUT

Two wire unbalanced output.

Capacitor Multiplier Input

DC Feedback Input

Transversal Line Current

RDC

DC Feeding System

EIA

Read/write Command

NCS

Chip Select Command

DIO

Data Input/output

DCKL

Clock Signal

DGND

Digital Ground

N.C.

Not connected.

N.C.

Not connected.

N.C.

Not connected.

Input/output Changing Command

State Control Signal 1

State Control Signal 2

N.C.

Not connected.

N.C.

Not connected.

Longitudinal Line Current

CRTS

Ringtrip Det. & TTX Shaping

TTXIN

Teletaxe Signal Input

RGTTX

TTX Filter Level Compensation

TTXF

TTX Filter Input

Balancing Network

37
38
39

TST

These pins are connected internally for test purpose. It should not be used as a tie point
for external components.

4W Sending Output

RX/RG

4W Receiving and Ring Input

VBIM

Battery Image Input

43
44

TST

These pins are connected internally for test purpose. It should not be used as a tie point
for external components.

L3000S - L3030

4/29

Электронный компонент: L3000S