L3000N
L3092
SLIC KIT OPTIMIZED FOR APPLICATIONS WITH BOTH
FIRST AND SECOND GENERATION COMBOS
PRELIMINARY DATA
PROGRAMMABLE DC FEED RESISTANCE
AND LIMITING CURRENT (25/40/60mA)
LOW ON-HOOK POWER DISSIPATION
(50mW typ)
SIGNALLING FUNCTION (off-hook/GND-Key)
QUICK OFF-HOOK DETECTION IN CVS FOR
LOW DISTORTION (< 1 %) DIAL PULSE DE-
TECTION
HYBRID FUNCTION
RINGING GENERATION WITH QUASI ZERO
OUTPUT IMPEDANCE, ZERO CROSSING IN-
JECTION (no ext. relay needed) AND RING
TRIP DETECTION
ABSOLUTELY NO NOISE INJECTED ON
ADIACENT LINES DURING RINGING SE-
QUENCE
AUTOMATIC RINGING STOP WHEN OFF-
HOOK IS DETECTED
TEST MODE ALLOWS LINE LENGHT MEAS-
UREMENT
PARALLEL LATCHED DIGITAL INTERFACE
LOW NUMBER OF EXTERNAL COMPO-
NENTS WITH STANDARD TOLERANCE
ONLY : 9 1% RESISTORS AND 5 10-20% CA-
PACITORS (for 600 ohm appl.)
POSSIBILITY TO WORK ALSO WITH HIGH
COMMON MODE CURRENTS
GOOD REJECTION OF THE NOISE ON BAT-
TERY VOLTAGE (20dB at 10Hz ; 35dB at
1KHz)
INTEGRATED THERMAL PROTECTION
SURFACE MOUNT PACKAGE (PLCC28 +
PowerSO-20)
0°C TO 70°C: L3000N/L3092
-40°C TO +85°C: L3000NT/L3092T
DIP28
ORDERING NUMBER:
L3092N
PLCC28
ORDERING NUMBER:
L3092FN
FLEXIWA TT15
ORDERING NUMBER:
L3000N
PowerSO-20
ORDERING NUMBER:
L3000NSO
DESCRIPTION
The SLIC KIT (L3000N/L3092) is a set of solid
state devices designed to integrate many of the
functions needed to interface a telephone line. It
consists of 2 integrated devices ; the L3000N line
interface circuit and the L3092 control unit.
The kit implements the main features of the
BORSHT functions:
- Battery feed (balance mode)
- Ringing Injection
November 1994
- Signalling Detection
- Hybrid Function
The SLIC KIT injects the ringing signal in bal-
anced mode and requires a positive supply volt-
age of typically + 72V to be available on the sub-
scriber card.
The L3000N/L3092 kit generates the ringing sig-
nal internally, avoiding the requirement for expen-
sive external circuitry. A low level 1.5Vrms input is
required. (This can be provided by the combo).
A special operating mode limits the SLIC KIT
power dissipation to 50mW in on-hook condition
keeping the on/off hook detection circuit active.
Through the Digital Interface it is also possible to
set an operating mode that allows measurements
of loop resistance and therefore of line lenght.
This kit is fabricated using a 140V Bipolar tech-
2
nology for L3000N and a 12V Bipolar I L technol-
ogy for L3092.
Both devices are available PTH application
(FLEXIWATT15 and DIP28) or SMD application
(PowerSO-20 and PLCC28).
This kit is specially suitable to Private Automatic
Branch Exchange (PABX) and Low Range C.O.
Applications.
1/32
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
L3000N - L3092
PIN CONNECTIONS
DIP-28
PLCC-28
V
B-
V
BIM
V
IN
V
DD
BGND
V
B+
MNT
TIP
N.C.
V
B-
10
9
8
7
6
5
4
3
2
1
D94TL125
11
12
13
14
15
16
17
18
19
20
V
B-
AGND
REF
C1
C2
IT
IL
N.C.
RING
V
B-
FLEXIWATT15
PowerSO-20
ABSOLUTE MAXIMUM RATINGS
Symbol
V
b
–
V
b
+
|V
b
–|+|V
b
+|
V
dd
V
ss
V
agnd
–V
bgnd
T
j
T
stg
Negative Battery Voltage
Positive Battery Voltage
Total Battery Voltage
Positive Supply Voltage
Negative Supply Voltage
Max. Voltage between Analog Ground and Battery Ground
Max. Junction Temperature
Storage Temperature
Parameter
Value
–80
80
140
+6
–6
5
+150
–55 to +150
Unit
V
V
V
V
V
V
°C
°C
2/32
L3000N - L3092
THERMAL DATA
Symbol
Parameter
L3000N HIGH VOLTAGE
R
th j-case
Thermal Resistance Junction to case (FLEXIWATT15)
R
th j-amb
Thermal Resistance Junction to ambient (FLEXIWATT15)
R
th j-case
Thermal Resistance Junction to case (PowerSO-20)
R
th j-amb
Thermal Resistance Junction to ambient (PowerSO-20)
L3092 LOW VOLTAGE
R
th j-amb
Thermal Resistance Junction to ambient
Value
Max.
Max.
Typ.
Max.
Max.
4
50
2
60
80
Unit
°C/W
°C/W
°C/W
°C/W
°C/W
OPERATING RANGE
Symbol
T
oper
V
b
–
V
b
+
|V
b
–|+|V
b
+|
V
dd
V
ss
Parameter
Operating Temperature Range for
L3000N/L3092
L3000NT/L3092T
Negative Battery Voltage
Positive Battery Voltage
Total Battery Voltage
Positive Supply Voltage
Negative Supply Voltage
Min.
0
-40
–70
0
+4.5
–5.5
Typ.
Max.
70
+85
–20
+75
130
+5.5
–4.5
Unit
°C
°C
V
V
V
V
V
–48
+72
120
PIN DESCRIPTION (L3000N)
FLEX.
N°
1
2
3
4
5
6
7
SO-P.
N°
3
4
5
6
7
8
9
Name
TIP
MNT
V
B+
BGND
V
DD
V
IN
VBIM
Description
A line termination output with current capability up to 100mA (I
s
is the current sourced
from this pin).
Positive Supply Voltage Monitor.
Positive Battery Supply Voltage.
Battery ground relative to the V
S+
and the V
B-
supply voltages.
It is also the reference ground for TIP and RING signals.
Positive Power Supply +5V.
2 wire unbalanced voltage input.
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 .
Negative Battery Supply Voltage.
Analog Ground. All input signals and the V
DD
supply voltage must be referred to this pin.
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.
I
a
+
I
b
I
T
=
8
9
10
11
12
13
1,10,11,
20
12
13
14
15
16
V
B-
AGND
REF
C1
C2
I
T
100
14
17
I
L
Scaled longitudinal line current signal.
I
L
=
I
a
– I
b
100
15
–
19
2, 18
RING
N.C.
B line termination output with current capability up to 100mA (I
b
is the current sunk into
this pin).
Not connected.
Notes:
1) Unless otherwise specified all the diagrams in this datasheet refers to the FLEXIWATT15 pin connection.
2) All information relative to the PowerSO-20 package option should be considered as advanced information on a new product now in
developement or undergoing evaluation. Details are subject to change without notice.
3/32
L3000N - L3092
PIN DESCRIPTION (L3092)
N°
1
Name
VOUT
Description
Two wire unbalanced output carryng out the following signals reduced by 40:
1) DC voltage to perform the proper DC characteristic.
2) Ringing Signal
3) Voice Signal
AC line Impedance Adjustment Protection Resistances Compensation
Transmit Amplifier Output
Comparator Input. This is the input comparator that senses the line voltage in power down and in
automatic stand-by, allowing off hook detection in this mode.
Aut. Input. It is a part of the digital interface. Loaded when CS is low.
Master Reset Input. When it is connected to ground the SLIC is forced in power down. It has an
internal pull-up. (typ. 200KΩ) (*)
Power on/power off input. This input is part of digital interface. Loaded when CS is low.
Ring Enable Input. This input is part of the digital interface. Loaded when CS is low.
Chip Select Input.
Ground Key Output Enabled by CS Low.
On Hook/off Hook Output Enabled by CS Low.
State control Signal 2.
State Control Signal 1. Combination of C1 and C2 define operating mode of the high voltage part.
Low Level Ringing Signal Input.
Ring Trip Detection
Longitudinal Line Current Input
I
b
−
I
a
IL
=
100
DC Feeding System
Transversal Line Current Input
I
a
+
I
b
IT
=
100
AC - DC Feedback Input.
Positive Supply Voltage, +5V.
Bias Setting Pin.
Negative Supply Voltage, -5V.
Analog and Digital Ground.
Limiting Current Selection Input. Loaded when CS is low.
Power Down Output. Driving the high voltage part L3000N through the bias resistor RH.
TX Amplifier Negative Input performig the two to four wire conversion. In case of application with
2nd Generation COMBO performing also the echo cancellation (ex TS5070/5071), this pin must
be connected to GND.
AC Feedback Input.
AC Line Impedance Synthesis.
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
RPC
TX
COMP
AUT
MR
PWON
RING
CS
GDK
ONHK
C2
C1
RGIN
CRT
IL
17
18
RDC
IT
19
20
21
22
23
24
25
26
ACDC
VDD
REF
VSS
GND
LIM
PDO
ZB
27
28
CAC
ZAC
(*) Must be connected to a proper capacitor for power on reset or to V
DD
if not used. Should not be left open.
4/32
L3000N - L3092
L3000N BLOCK DIAGRAM
L3092 BLOCK DIAGRAM
5/32
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