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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 DETECTION HYBRID FUNCTION RINGING GENERATION WITH QUASI ZERO OUTPUT IMPEDANCE, ZERO CROSSING INJECTION (no ext. relay needed) AND RING TRIP DETECTION ABSOLUTELY NO NOISE INJECTED ON ADIACENT LINES DURING RINGING SEQUENCE AUTOMATIC RINGING STOP WHEN OFFHOOK IS DETECTED TEST MODE ALLOWS LINE LENGHT MEASUREMENT PARALLEL LATCHED DIGITAL INTERFACE LOW NUMBER OF EXTERNAL COMPONENTS WITH STANDARD TOLERANCE ONLY : 9 1% RESISTORS AND 5 10-20% CAPACITORS (for 600 ohm appl.) POSSIBILITY TO WORK ALSO WITH HIGH COMMON MODE CURRENTS GOOD REJECTION OF THE NOISE ON BATTERY VOLTAGE (20dB at 10Hz ; 35dB at 1KHz) INTEGRATED THERMAL PROTECTION SURFACE MOUNT PACKAGE (PLCC28 + PowerSO-20) -40°C TO 85°C: L3000S/L3092
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
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
December 1997
- Hybrid Function The SLIC KIT injects the ringing signal in balanced mode and requires a positive supply voltage of typically + 72V to be available on the subscriber card. The L3000S/L3092 kit generates the ringing signal internally, avoiding the requirement for expensive 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 technology for L3000S and a 12V Bipolar I2L technology 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.
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This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
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L3000S - L3092
PIN CONNECTIONS
DIP28
FLEXIWATT15
PLCC28
VBN.C. TIP MNT VB+ BGND VDD VIN VBIM VB-
1 2 3 4 5 6 7 8 9 10
D97TL290
20 19 18 17 16 15 14 13 12 11
VBRING N.C. IL IT C2 C1 REF AGND V B-
V BVBIM V IN V DD BGND VB+ 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
VBAGND REF C1 C2 IT IL N.C. RING VB-
PowerSO20 (slug-down)
PowerSO20 (slug-up)
ABSOLUTE MAXIMUM RATINGS
Symbol V b– Vb+ |Vb–|+|V b+| Vdd Vss Vagnd–V bgnd Tj Tstg 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
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L3000S - L3092
THERMAL DATA
Symbol Parameter L3000S HIGH VOLTAGE R th j-case Thermal Resistance Junction to case (FLEXIWATT15) Rth j-amb Thermal Resistance Junction to ambient (FLEXIWATT15) R th j-case Thermal Resistance Junction to case (PowerSO-20) Rth j-amb Thermal Resistance Junction to ambient (PowerSO-20) L3092 LOW VOLTAGE Rth 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 Toper V b– Vb+ |Vb–|+|V b+| Vdd Vss Imax Parameter Operating Temperature Range for L3000S/L3092 Negative Battery Voltage Positive Battery Voltage Total Battery Voltage Positive Supply Voltage Negative Supply Voltage Total Line Current (IL + IT) Min. -40 –70 0 +4.5 –5.5 Typ. –48 +72 120 Max. +85 –20 +75 130 +5.5 –4.5 85 Unit °C V V V V V mA
PIN DESCRIPTION (L3000S)
FLEX. N° 1 2 3 4 5 6 7 SO-P. N° 3 4 5 6 7 8 9 Name TIP MNT VB+ BGND VDD VIN VBIM Description A line termination output with current capability up to 100mA (Is is the current sourced from this pin). Positive Supply Voltage Monitor. Positive Battery Supply Voltage. Battery ground relative to the VS+ and the VB- 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 VDD 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. Ia + Ib IT =
8 9 10 11 12 13
1,10,11, 20 12 13 14 15 16
VBAGND REF C1 C2 IT
100
14
17
IL
Scaled longitudinal line current signal.
IL =
Ia – Ib
100
15 –
19 2, 18
RING N.C.
B line termination output with current capability up to 100mA (Ib 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.
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L3000S - 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 Ib − Ia IL = 100 DC Feeding System Transversal Line Current Input Ia + Ib 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 L3000S 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 VDD if not used. Should not be left open.
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L3000S - L3092
L3000S BLOCK DIAGRAM
L3000S
L3092 BLOCK DIAGRAM
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L3000S - L3092
FUNCTIONAL DIAGRAM
L3000S
FUNCTIONAL DESCRIPTION L3000S - HIGH VOLTAGE CIRCUIT The L3000S line interface provides battery feed for telephone lines and ringing injection. Both these operations are done in Balance Mode. This is very important in order to avoid the generation of common mode signals in particular during the pulse dialling operation of the telephone set connected to the SLIC. The IC contains a state decoder that under external control can force the following operational modes : stand-by, conversation and ringing. In addition Power down mode can be forced connecting the bias current resistor to VDD or leaving it open. Two pins, IL and IT, carry out the information concerning line status which is detected by sensing the line current into the output stage. The L3000S amplifies both the AC and DC signals entering at pin 6 (VIN) by a factor equal to 40. Separate grounds are provided : - Analog ground as reference for analog signals - Battery ground as a reference for the output stages The two ground should be shorted together at a low impedance point.
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L3092 - LOW VOLTAGE CIRCUIT The L3092 Low Voltage Control Unit controls the L3000S line interface module providing set up data to set line feed characteristics and to inject ringing. An on chip digital parallel interface allows a microprocessor or a second generation COMBO as the TS5070 to control all the operations. L3092 defines working states of Line Interface Circuit and also informs the card controller about line status. L3000S WORKING STATES In o
