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PBL38812

Features: • Settable gain dynamics (25 or 50 dB).• Low power consumption, totally 1.0mA at 3.3V typical.• Background noise compensation in the transmitting channel with hold function.• Exellent noise performance.• Both channel input amplifiers have balanced inputs....

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SeekIC No. : 004455571 Detail

PBL38812: Features: • Settable gain dynamics (25 or 50 dB).• Low power consumption, totally 1.0mA at 3.3V typical.• Background noise compensation in the transmitting channel with hold functi...

PBL38812 Data Sheet

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Part Number:
PBL38812
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/25

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Product Details

Description



Features:

• Settable gain dynamics (25 or 50 dB).
• Low power consumption, totally 1.0mA at 3.3V typical.
• Background noise compensation in the transmitting channel with hold function.
• Exellent noise performance.
• Both channel input amplifiers have balanced inputs.
• Minimum of external components needed for function.
• 16-pin SO and 18-pin DIP encapsulation.


Pinout

Connection Diagram


Specifications

Parameter Symbol Min Max Unit
Speech switch supply current ID   10 mA
Voltage pin 1-14   -0.5 Vpin15+0.5 V
Operating temperature TAmb -20 +70
Storage temperature TStg -55 +125



Description

The PBL 388 12 contains all the necessary circuitry, amplifiers, detectors, comparators and control functions of PBL38812 to implement a high performance, voice-switched, "hands-free " function in an answering machine. The gain dynamics (attenuation between channels) is settable (25dB or 50dB) via CTR pin that also control two mute levels. A background noise detector in the transmitting channel reduces the influence of continuous noise signals.

The PBL 388 12 is designed for answering machines that are either powered from the telephone line or from a mains powered dc. supply.

Filtering of both the audio and control signals ofPBL38812 in both transmitter and receiver channels possible.

An external loudspeaker amplifier PBL38812 has to be used, normally the same as used for the answering machine.




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