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PDF ( 数据手册 , 数据表 ) L3092

零件编号 L3092
描述 SLIC KIT OPTIMIZED
制造商 STMicroelectronics
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L3092 数据手册, 描述, 功能
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L3000S
L3092
SLIC KIT OPTIMIZED FOR APPLICATIONS WITH BOTH
FIRST AND SECOND GENERATION COMBOS
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)
-40°C TO 85°C: L3000S/L3092
DESCRIPTION
The SLIC KIT (L3000S/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 L3000S 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
DIP28
ORDERING NUMBER:
L3092N
FLEXIWATT15
ORDERING NUMBER:
L3000SX-VC
PLCC28
ORDERING
NUMBER:
L3092FN
PowerSO20
(slug-up)
ORDERING
NUMBER:
L3000SX
PowerSO20
(slug-down)
ORDERING
NUMBER:
L3000SX-77
- 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 L3000S/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 L3000S and a 12V Bipolar I2L 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.
December 1997
1/32
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.







L3092 pdf, 数据表
www.DataSheet4U.com
L3000S - L3092
In the same condition the power dissipation of
L3092 is typically 100mW.
Figure 1: DC Characteristics in Conversation
Mode
When the SLIC is in Stand-by mode, the power
dissipation of L3000S does not exceed
120mW from – 48V) eventually increased of a
certain amount if some current is flowing into the
line.
The power dissipation of the L3092 in the same
condition is typically 50mW.
SBY Mode is usually selected when the tele-
phone is in on-hook. It allows a proper off-hook
detection also in presence of high common mode
line current or with telephone set sinking few mil-
liAmpere of line current in on hook condition.
Figure 3: DC Characteristics in Stand-by Mode
Figure 2: Line Current versus Loop Resistance -
RFS = 200; Limiting Currents:
25/40/60mA
2) STAND-BY (SBY) MODE
In this mode the bias currents of both L3000S and
L3092 are reduced as only some parts of the two
circuits are completely active, control interface
and current sensors among them. The current
supplied to the line is limited at 10mA, and the
slope of the DC characteristic corresponds to 2 x
RFS.
The AC characteristic in Stand-by corresponds to
a low impedance (2 x RP)
In Stand-by mode the line voltage polarity is just
in direct condition, that is the TIP wire more posi-
tive than the RING one as in Conversation Mode.
8/32
3) POWER DOWN (PD) MODE
In this mode the L3000S present a high imped-
ance (> 1 Mohm) to the line and cannot feed any
line current.
The L3092 forces L3000S in Power Down discon-
necting its bias Resistor, RH, from the ground
through the output pin PD0.
The power dissipation from the battery volt-
age (– VB) is almost equal to zero and the power
dissipation of L3092 is typically 50mW.
The PD mode is normally used in emergency
condition but can be used also in normal on-hook
condition.
In this case the off-hook detection is performed
using the line sense comparator integrated in the
L3092.
The fig. 4 shows the functional circuit to perform
the off hook detection in Power down mode.
The resistor RR and RT feed the line current. The
voltage at the terminal of the resistor RS con-
nected to RING wire is normally – 48V.
When there is a loop resistor between TIP and







L3092 equivalent, schematic
www.DataSheet4U.com
L3000S - L3092
AC OPERATION
Symbol
Zlx
THD
Rl
Thl
Parameter
Sending Output Impedance on TX
Signal Distortion at 2W and 4W
Terminals
2W Return Loss
Transhybrid Loss
Gs Sending Gain (1)
Gsf Sending Gain Flatness vs.
Frequency
Gl Sending Gain Linearity
Gr Receiving Gain
Grf Receiving Gain Flatness
Grf Receiving Gain Linearity
Np4W
Np4W
SVRR
Psophomet. Noise 4W - Tx
Terminals
Psophomet. at Line Terminals
Supply Voltage Rejection Ratio
Relative to VB–
Ltc Longitudinal to Transversal
Conversion
Tlc Transversal to Longitudinal
Conversion
Test Conditions
Min.
Vtx = 0dBm @ 1020Hz
f = 300 to 3400Hz
f = 300 to 3400Hz
20log1
0
VVRS
Vso = 0dBm; f = 1020Hz
f = 300 to 3400Hz
Respect to 1020Hz
fr = 1020Hz
Vsoref = –10dBm
Vso = +4 / –40dBm
Vrl = 0dBm; f = 1020Hz
f = 300 to 3400Hz
Respect to 1020Hz
fr = 1020Hz
Vrlref = –10dBm
Vrl = +4 / –40dBm
22
30
–6.27
–0.1
–0.1
–0.25
–0.1
–0.1
f = 10Hz Vn = 100mVrms
f = 1KHz Vn = 100mVrms
f =3.4KHz Vn = 100mVrms
f = 300 to 3400Hz
I line = 30mA
ZML = 600
52
48
Typ.
–6.02
–79
–75
–20
51
Max.
15
0.3
–5.77
+0.1
+0.1
+0.25
+0.1
+0.1
–74
–70
–35
–30
Unit
%
dB
dB
dB
dB
dB
dB
dB
dB
dBmp
dBmp
dB
dB
dB
dB
dB
16/32










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