Description
The transmitter module is intended for use at SDH and SONET bit rates. The device meets the intention of the ITU-T (G.691) recommendations.
The single silicon IC is used as a laser driver, modulator and automatic power control. To ensure a proper laser operation over the wide temperature range and life of operation, the average optical output power is controlled. The laser bias is externally accessible for monitoring of the performance. A power alarm is activated when the average optical power cannot be maintained within specification. A laser shut-down is also provided according to SDH/SONET requirements.

Key Features
*Provides 1620 nm supervisory channel laser source for WDM applications according to ITU-T draft G.691
*Average power control
*Small size (40x70x9 mm)
*CMOS alarm output
*Thermoelectric cooler included
*P-ECL data inputs
*Tone modulation input
*Single 5.0 V supply

Applications
*1620 nm supervisory channel applications in WDM systems

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Description
PBL 38573 is a monolithic integrated speech transmission circuit for use in electronic telephones. It is intended specially for telephone lines with constant current feed. Maximum line current less than 130 mA in DIL package (100 mA in SO package). It is designed to accomodate either a low impedance dynamic or an electret microphone. A signal summing point at the transmitter input is available for DTMF dialler- and possible monitor or handsfree signals. An available internally preset line length compensation can be adjusted or shut off in low gain mode with external resistors. Application dependent parameters such as line balance, side tone level, transmitter and receiver gains and frequency responces are set independently by external components which means an easy adaption to various market needs. The setting of the parameters if carried out in certain order will counteract the interaction between the settings. A DCsupply is provided to feed microphones and diallers.

Key features
*Minimum number of external components for function,with one filtered DC-supply. 6 capacitors and 10 resistors.
*Easy adaption to various market needs.
*Mute control input for operation with DTMF - generator.
*Transmitter and receiver gain regulation for automatic loop loss compensation. Disconnectable.
*Extended current and voltage range 5 - 130mA (DIP), down to 2 V.
*Differential microphone input for good balance to ground.
*Balanced receiver output stage.
*Stabilized DC - supply for low current CMOS diallers and electret microphones.
*Short start up time.
*Excellent RFI performance.
*In 14- pin DIP and SO packages.

PBL38573/1NS, PBL38573/1SOS

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Description
Fiber optic receiver front-end module for STM-16 and OC-48 WDM applications. The module includes an InGaAs Avalanche Photo Diode (APD), with a low noise GaAs MMIC preamplifier in a 14 pin butterfly package.The module is equipped with an internal thermistor. The single-mode fiber pigtail is terminated with a customer specified connector. The module operates
between 1250 and 1620 nm. The electrical outputs are AC-coupled and differential.

Key Features
*Hermetic, 14 pin butterfly package with multisourced footprint
*FC/PC, SC or ST connector
*InGaAs APD with low noise GaAs MMIC preamplifier
*AC-coupled, differential data output
*Operates between 1250 nm and 1620 nm
*2.0 GHz minimum bandwidth
*-34 dBm typical sensitivity
*-3 dBm typical overload

Applications
*WDM
*SDH STM-16 LH
*SONET OC-48 LR
*Digital recievers to 3 Gb/s
*Analog receivers to 2.0 GHz

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Description
The laser module, intended for OC-192/STM-64 DWDM applications, consists of a DFB laser with integrated absorption modulator mounted in a high frequency package which includes an isolator. Laser wavelengths are available according to the ITU-T grid.

Key Features
*1550 nm DFB CW source monolithicly integrated with an Electro Absorptionmodulator (EA)
*Hermetic, 7 pin butterfly package
*Single-mode fiber pigtail
*12 GHz typical bandwidth
*-3 dBm output power
*Multisourced footprint

Applications
*DWDM SDH STM-64 LH
*DWDM SONET OC-192 LR

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Description
PBL 3770A is a bipolar monolithic circuit intended to control and drive the current in one winding of a stepper motor. It is a high power version of PBL 3717 and special care has been taken to optimize the power handling capability without suffering in reliability.
The circuit consists of a LS-TTL compatible logic input stage, a current sensor, a monostable multivibrator and a high power H-bridge output stage. The circuit is pin-compatible with the PBL 3717 industry-standard driver.
Two PBL 3770A and a small number of external components form a complete control and drive unit for LS-TTL or microprocessor-controlled stepper motor systems.

Key Features
• Half-step and full-step operation.
• Switched mode bipolar constant current drive
• Wide range of current control 5 -1800 mA.
• Wide voltage range 10 - 45 V.
• Designed for unstabilized moto supply voltage.
• Current levels can be selected in steps or varied continuously.
• Thermal overload protection.

PBL 3770ANS, PBL 3770AQNS, PBL 3770AQNT
PBL 3770ASOS, PBL 3770ASOT

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Description
The PBL 3764 Subscriber Line Interface Circuit (SLIC) is a bipolar integrated circuit in 75V technology which replaces the cinventional transformer based analog line interface circuit in PABX and other telecommunications equipment with a modren, compact solid state design. Not onlt is required PCB area reduced, but lesser component weight and height result as well. The PBL 3764 has been optimized for low cost and to require only a minimum of external components.
The PBL 3764 protrammable, constant-current feed system can operate with bettery sypply voltages down to 24 V to reduce line card power dissipation.
The SLIC incorporates loop current, ground ket and ring trip detection functions as well as a ring relay driver.
Two-to four-wire and four-to two-wire voice frequency (vf) signal conversion is accomplished by the SLIC in conjunction with either a conventional CODEC/filter or with a CODEC/filter option provides for flexible line card designs with features such as transmit and receivegains, hybrid balance and two-wire impedance adjustable by the system controller. In the conventional CODEC/filter implementation the two-wire impedance is set by a simple external nerwork.
Longitudinal line voltages are supressed by a feed back loop in the SLIC. Longitudinal balance specifications exceed FCC and EIA requirements.
The PBL 3764 package is 22-pin, dual-in-line, 28-pin J-leaded chip carrier or 32-pin leadless chip carrier.
Refer to Ericsson Components AB family of central office SLICs for applications requiring additional functions.

Features
*Battery feed characteristics programmable via external resistors; feed characteristics independent of SLIC battery supply variations
*Battery supply voltage as low as 24V for power efficient line card designs
*Ring relay driver
*Loop current, ground key and ring trip detection functions
*Programmalble line terminating impedance, complex or real
*On-hook transmission
*Longitudinal balance specifications in excess of FCC and EIA requiments
*Low 21mW on-hook power dissipation
*Tip-ring open circuit state for subscriber loop power denial
*-40℃ to +85℃ ambient temperature range

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Description
The PBL 3766 Subscriber Line Interface Circuit (SLIC) is a monolithic integrated circuit, manufactured in 75 V bipolar technology.
The PBL 3766 SLIC facilitates the design of cost effective, high performance on-premises (ONS) analog line interface cards for PABX systems and terminal adapters.
Small package size and few required external components result in a miniaturized design.
The PBL 3766 programmable, constant current loop feed system can operate with battery supply voltages between -24 V and -58 V.
The SLIC incorporates loop current and ring trip detection functions as well as a ring relay driver.
The two- to four-wire and four- to two-wire voice frequency (vf) signal conversion, i.e. the hybrid function, is provided by the SLIC in conjunction with either a conventional or a programmable CODEC/filter.
The PBL 3766 package is a 22 pin, plastic dual-in-line (batwing) or a 28-pin, plastic j-leaded chip carrier (PLCC).
The differences between PBL 3766 and PBL 3766/6 are the specifications for balance, output offset voltage, and insertion loss.

Key Features
* Low cost
* Few external components
* Programmable, constant current loop feed
* Line feed characteristics independent of battery supply variations
* -24 V to -58 V battery supply voltage range
* Detectors
- programmable loop current detector
- ring trip detector
* Ring relay driver
* Hybrid function with conventional or programmable CODEC/filters
* Line terminating impedance, complex or real, set by a simple external network or controlled by a programmable CODEC/filter
* Idle noise typ. -83 dBmp, typ. 7 dBrnC
* Low on-hook power dissipation: 20 mW @ -28 V, 35 mW @ -48 V
* Tip-ring open circuit state for subscriber loop power denial
* On-hook transmission

PBL3766/6N
PBL3766QN

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Description
 The PBL 3766 Subscriber Line Interface Circuit (SLIC) is a monolithic integrated circuit, manufactured in 75 V bipolar technology.
The PBL 3766 SLIC facilitates the design of cost effective, high performance on-premises (ONS) analog line interface ards for PABX systems and terminal adapters.
Small package size and few required external components result in a miniaturized design.
The PBL 3766 programmable, constant current loop feed system can operate with battery supply voltages between -24 V and -58 V.
The SLIC incorporates loop current and ring trip detection functions as well as a ring relay driver.
The two- to four-wire and four- to two-wire voice frequency (vf) signal conversion, i.e. the hybrid function, is provided by the SLIC in conjunction with either a conventional or a programmable CODEC/filter.
The PBL 3766 package is a 22 pin, plastic dual-in-line (batwing) or a 28-pin, plastic j-leaded chip carrier (PLCC).
The differences between PBL 3766 and PBL 3766/6 are the specifications for balance, output offset voltage, and insertion loss.

Key Features
* Low cost
* Few external components
* Programmable, constant current loop feed
* Line feed characteristics independent of battery supply variations
* -24 V to -58 V battery supply voltage range
* Detectors
– programmable loop current detector
– ring trip detector
* Ring relay driver
* Hybrid function with conventional or programmable CODEC/filters
* Line terminating impedance, complex or real, set by a simple external network or controlled by a programmable CODEC/filter
* Idle noise typ. -83 dBmp, typ. 7 dBrnC
* Low on-hook power dissipation: 20 mW @ -28 V, 35 mW @ -48 V
* Tip-ring open circuit state for subscriber loop power denial
* On-hook transmission

PBL3766N
PBL3766/6N
PBL3766QN
PBL3766/6QN

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