S1T8501 Samsung Semiconductor, Inc., S1T8501 Datasheet

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S1T8501

Manufacturer Part Number
S1T8501
Description
Speech Network With Dialer Interface
Manufacturer
Samsung Semiconductor, Inc.
Datasheet
SPEECH NETWORK WITH DIALER INTERFACE
INTRODUCTION
The S1T8501 is a speech network integrated circuit which includes
the following components: transmit amp, receive amp, DTMF amp,
voltage regulator, line equalizer, and voltage comparator. It handles
the voice signal, performing the 2/4 wires interface and changing the
gain on both sending and receiving amplifiers to compensate the line
current. The S1T8501 can work in fixed gain mode.
FEATURES
ORDERING INFORMATION
S1T8501X01-D0B0
Adjusts sending and receiving attenuation length
Regulated voltage output for external dialer
Linear interface for DTMF
Suitable for ceramic transducers
Mute function
Device
16 DIP 300A
Package
Operating Temperature
45 C — + 70C
16 DIP 300A
S1T8501
1

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S1T8501 Summary of contents

Page 1

... SPEECH NETWORK WITH DIALER INTERFACE INTRODUCTION The S1T8501 is a speech network integrated circuit which includes the following components: transmit amp, receive amp, DTMF amp, voltage regulator, line equalizer, and voltage comparator. It handles the voice signal, performing the 2/4 wires interface and changing the gain on both sending and receiving amplifiers to compensate the line current ...

Page 2

... Characteristic Line Voltage (3msec max) Forward Line Current Reverse Line Current Power Dissipation ( Operating Temperature Storage Temperature 2 SPEECH NETWORK WITH DIALER INTERFACE 1 MIC1 MUTING 4 BIAS ADJ. S1T8501 REGULATOR 5 BYPASS 6 REGULATOR LINE CURRENT 7 SENSING 8 Z SWITCH BAL Symbol ...

Page 3

... 52mA 2.5 3 80mA 2.1V RO 2.4 2.5 0 80mV S1T8501 Unit 4.7 5.5 V 12.2 dB 700 dBm 4 100 V 100 ...

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... S1T85011 ELECTRICAL CHARACTERISTICS ( (Continued) Characteristic Starting Delay Time Muting Threshold Voltage (pin 3) Standby Muting Current Operation 4 SPEECH NETWORK WITH DIALER INTERFACE Symbol Test Conditions 80mA D (ST TH(MUTE 80mA SB (MUTE 80mA DD (MUTE) L Min. Typ. ...

Page 5

... SPEECH NETWORK WITH DIALER INTERFACE APPLICATION CIRCUIT 330 7. 13K 10uF 68 1uF Amp Output Amp Tx Amp AGC Mic Amp Reg. MF Amp MUTE MF Signal 30 to Dialer S1T8501 1.8K 12 1.8K 15V 13 SPEAKER Tip 1 3.6K MIC _ 16 Ring 5 ...

Page 6

... S1T85011 6 SPEECH NETWORK WITH DIALER INTERFACE NOTES ...

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