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Datasheet: L3000NSO (STMicroelectronics)

SLIC KIT OPTIMIZED FOR APPLICATIONS WITH BOTH FIRST and SECOND GENERATION COMBOS

 

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STMicroelectronics
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
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
- 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-
nology for L3000N and a 12V Bipolar I
2
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.
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
November 1994
DIP28
ORDERING NUMBER:
L3092N
PLCC28
ORDERING NUMBER:
L3092FN
FLEXIWA TT15
ORDERING NUMBER:
L3000N
PowerSO-20
ORDERING NUMBER:
L3000NSO
1/32
PIN CONNECTIONS
DIP-28
PLCC-28
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
b
Negative Battery Voltage
80
V
V
b
+
Positive Battery Voltage
80
V
|V
b
|+|V
b
+|
Total Battery Voltage
140
V
V
dd
Positive Supply Voltage
+6
V
V
ss
Negative Supply Voltage
6
V
V
agnd
V
bgnd
Max. Voltage between Analog Ground and Battery Ground
5
V
T
j
Max. Junction Temperature
+150
C
T
stg
Storage Temperature
55 to +150
C
FLEXIWATT15
PowerSO-20
V
B-
V
BIM
V
IN
V
DD
BGND
MNT
V
B+
TIP
N.C.
RING
N.C.
IL
C2
IT
C1
REF
AGND
V
B-
10
8
9
7
6
5
4
3
2
13
14
15
16
17
19
18
20
12
1
11
V
B-
V
B-
D94TL125
L3000N - L3092
2/32
PIN DESCRIPTION (L3000N)
FLEX.
N
SO-P.
N
Name
Description
1
3
TIP
A line termination output with current capability up to 100mA (I
s
is the current sourced
from this pin).
2
4
MNT
Positive Supply Voltage Monitor.
3
5
V
B+
Positive Battery Supply Voltage.
4
6
BGND
Battery ground relative to the V
S+
and the V
B-
supply voltages.
It is also the reference ground for TIP and RING signals.
5
7
V
DD
Positive Power Supply +5V.
6
8
V
IN
2 wire unbalanced voltage input.
7
9
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 .
8
1,10,11,
20
V
B-
Negative Battery Supply Voltage.
9
12
AGND
Analog Ground. All input signals and the V
DD
supply voltage must be referred to this pin.
10
13
REF
Voltage reference output with very low temperature coefficient. The connected resistor
sets Internal circuit bias current.
11
14
C1
Digital signal input (3 levels) that defines device status with pin 12.
12
15
C2
Digital signal input (3 levels) that defines device status with pin 11.
13
16
I
T
High precision scaled transversal line current signal.
14
17
I
L
Scaled longitudinal line current signal.
15
19
RING
B line termination output with current capability up to 100mA (I
b
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 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.
I
L
=
I
a
I
b
100
I
T
=
I
a
+
I
b
100
OPERATING RANGE
Symbol
Parameter
Min.
Typ.
Max.
Unit
T
oper
Operating Temperature Range for L3000N/L3092
L3000NT/L3092T
0
-40
70
+85
C
C
V
b
Negative Battery Voltage
70
48
20
V
V
b
+
Positive Battery Voltage
0
+72
+75
V
|V
b
|+|V
b
+|
Total Battery Voltage
120
130
V
V
dd
Positive Supply Voltage
+4.5
+5.5
V
V
ss
Negative Supply Voltage
5.5
4.5
V
THERMAL DATA
Symbol
Parameter
Value
Unit
L3000N HIGH VOLTAGE
R
th j-case
Thermal Resistance Junction to case
(FLEXIWATT15)
Max.
4
C/W
R
th j-amb
Thermal Resistance Junction to ambient (FLEXIWATT15)
Max.
50
C/W
R
th j-case
Thermal Resistance Junction to case (PowerSO-20)
Typ.
2
C/W
R
th j-amb
Thermal Resistance Junction to ambient (PowerSO-20)
Max.
60
C/W
L3092 LOW VOLTAGE
R
th j-amb
Thermal Resistance Junction to ambient
Max.
80
C/W
L3000N - L3092
3/32
PIN DESCRIPTION (L3092)
N
Name
Description
1
VOUT
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
2
RPC
AC line Impedance Adjustment Protection Resistances Compensation
3
TX
Transmit Amplifier Output
4
COMP
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.
5
AUT
Aut. Input. It is a part of the digital interface. Loaded when CS is low.
6
MR
Master Reset Input. When it is connected to ground the SLIC is forced in power down. It has an
internal pull-up. (typ. 200K
) (*)
7
PWON
Power on/power off input. This input is part of digital interface. Loaded when CS is low.
8
RING
Ring Enable Input. This input is part of the digital interface. Loaded when CS is low.
9
CS
Chip Select Input.
10
GDK
Ground Key Output Enabled by CS Low.
11
ONHK
On Hook/off Hook Output Enabled by CS Low.
12
C2
State control Signal 2.
13
C1
State Control Signal 1. Combination of C1 and C2 define operating mode of the high voltage part.
14
RGIN
Low Level Ringing Signal Input.
15
CRT
Ring Trip Detection
16
IL
Longitudinal Line Current Input
17
RDC
DC Feeding System
18
IT
Transversal Line Current Input
19
ACDC
AC - DC Feedback Input.
20
VDD
Positive Supply Voltage, +5V.
21
REF
Bias Setting Pin.
22
VSS
Negative Supply Voltage, -5V.
23
GND
Analog and Digital Ground.
24
LIM
Limiting Current Selection Input. Loaded when CS is low.
25
PDO
Power Down Output. Driving the high voltage part L3000N through the bias resistor RH.
26
ZB
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.
27
CAC
AC Feedback Input.
28
ZAC
AC Line Impedance Synthesis.
(*) Must be connected to a proper capacitor for power on reset or to V
DD
if not used. Should not be left open.
IL
=
I
b
-
I
a
100
IT
=
I
a
+
I
b
100
L3000N - L3092
4/32
L3000N BLOCK DIAGRAM
L3092 BLOCK DIAGRAM
L3000N - L3092
5/32
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