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KA8501A

Samsung
Part Number KA8501A
Manufacturer Samsung
Description SPEECH NETWORK WITH DIALER INTERFACE
Published Apr 25, 2005
Detailed Description KA8501A SPEECH NETWORK WITH DIALER INTERFACE INTRODUCTION 16-DIP-300A The KA8501A is a telephone speech network integr...
Datasheet PDF File KA8501A PDF File

KA8501A
KA8501A

Overview
KA8501A SPEECH NETWORK WITH DIALER INTERFACE INTRODUCTION 16-DIP-300A The KA8501A is a telephone speech network integrated circuit which includes transmit amp, receive amp, DTMF amp, voltage regulator, line equalizer, 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 KA8501A can work in fixed gain mode.
FEATURES • Adjusts sending and receiving attenuation length • Regulated voltage for dialer • Linear interface for DTMF • Suitable for ceramic transducers • Mute function ORDERING INFORMATION Device KA8501A Package 16-DIP-300A Operating Temperature - 45°C ~ + 70°C PIN CONFIGURATION MIC1 1 2 3 4 KA8501A 5 6 7 8 16 15 14 13 12 11 10 9 MIC2 V+ VDD MUTING MF BIAS ADJ.
RXO2 REGULATOR RXO1 RXI + REGULATOR LINE CURRENT RXI - ZBAL SWITCH V- Fig.
1 KA8501A SPEECH NETWORK WITH DIALER INTERFACE ABSOLUTE MAXIMUM RATINGS Characteristic Line Voltage (3msec max) Forward Line Current Reverse Line Current Power Dissipation (Ta = 70°C) Operating Temperature Storage Temperature Symbol VL ILF ILR PD T OPR T STG Value 22 150 -150 1 - 45 ~ + 70 - 65 ~ + 150 Unit V mA mA W °C °C ELECTRICAL CHARACTERISTICS (Ta = 25°C) Characteristic Symbol Test Conditions IL = 12mA Line Voltage Common Mode Rejection Ratio Line Matching Impedance VL CMRR ZL Ta = 25°C IL = 20mA IL = 80mA f = 1KHz, IL = 12 ~ 80mA VRI = 0.
3V, IL = 12 ~ 80mA f = 1KHz Ta = 25°C f = 1KHz VMI = 2mV IL = 25 ~ 52mA T X Gain Flatness T X Distortion T X Noise Side Tone MIC Input Impedance T x Loss in MF Operation ∆ GV (TX) THD TX VNO (TX) GV (ST) ZI (MIC) GV (LOSS) VMI = 2mV, fref = 1KHz IL = 12 ~ 80mA f = 1KHz IL = 16 ~ 80mA VMI = 0V, IL = 40mA Ta = 25°C, f= 1KHz IL = 25 ~ 52mA VMI = 2mV, IL = 12 ~ 80mA VMI = 2mV Ta = 25°C VRI = 0.
3V f = 1KHz IL = 25 ~ 52mA IL = 25mA IL = 52mA IL = 25mA IL = 52mA 40 - 30 - 30 7 2.
5 7 8 3.
5 8 VSO = 1V VSO = 1.
3V IL = 25mA IL = 52mA Min 3.
9 50 500...


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