PBL38813, PBL3886, PBL38861 Selling Leads, Datasheet
MFG:ERISSON Package Cooled:98+ D/C:04+
PBL38813, PBL3886, PBL38861 Datasheet download
Part Number: PBL38813
MFG: ERISSON
Package Cooled: 98+
D/C: 04+
PBL38813, PBL3886, PBL38861
- Table of contents:
Info of PBL38813
Info of PBL3886
Info of PBL38861
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About PBL38813
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Datasheet: PBL38813
File Size: 306884 KB
Manufacturer: ERICSSON [Ericsson]
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About PBL04
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Datasheet: PBL04
File Size: 56501 KB
Manufacturer:
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About PBL04
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Datasheet: PBL04
File Size: 56501 KB
Manufacturer:
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PBL38813 General Description
The PBL 388 13 contains all the necessary circuitry, amplifiers, detectors, comparator and control functions to implement a high performance, voice-switched, loudspeaking, "hands-free " telephone. The gain dynamics (attenuation between channels) is selectable (25dB or 50dB) via a separate pin. A background noise detector in the transmitting channel reduces the influence of continuous external noise signals to the switching .
The PBL 388 13 is designed for telephone systems that are either powered from the telephone line or from a mains powered constant voltage dc. supply. The circuit contains a transformerless audio power amplifier with a current supply circuitry (patented) that eliminates the need of inductors. Automatic volume attenuation in the power amplifier extends the operating range at low line currents. A special feature in this circuit is that the power amplifier volume control can be implemented either as an ac. potentiometer control or as a digital control by a m-processor (dc. control).
Filtering is possible of both, the audio and the speech switching control signals, in both transmitter and receiver channels.
PBL38813 Maximum Ratings
| Parameter | Symbol | Min | Max | Unit |
| Speech switch supply current | ID | 10 | mA | |
| Speaker amplifier supply current | I+L | 130 | mA | |
| Voltage pin 1-14 | -0.5 | Vpin15+0.5 | V | |
| Operating temperature | TAmb | -20 | +70 | |
| Storage temperature | TStg | -55 | +125 |
PBL38813 Features
• Minimum of external components needed for function.
• Selectable gain dynamics. (25 or 50 dB)
• Direct telephone line powered solution (patented).
• Low power consumption: »1mA at 3.3V (typical) for speech switching, audio power amplifier quiscent current »1mA.
• Drives an 25 - 50 ohm loudspeaker without a transformer.
• Background noise compensation in the transmitting channel with hold function at receive.
• Input amplifiers of both channels have balanced inputs.
• Exellent noise performance.
• Encapsulated in 24 pin plastic "skinny" DIP and 24 pin SO .
• Selectable gain dynamics. (25 or 50 dB)
• Direct telephone line powered solution (patented).
• Low power consumption: »1mA at 3.3V (typical) for speech switching, audio power amplifier quiscent current »1mA.
• Drives an 25 - 50 ohm loudspeaker without a transformer.
• Background noise compensation in the transmitting channel with hold function at receive.
• Input amplifiers of both channels have balanced inputs.
• Exellent noise performance.
• Encapsulated in 24 pin plastic "skinny" DIP and 24 pin SO .
PBL38813 Connection Diagram
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