Function:
Low Voltage Transmission Circuit with Dialer Interface
Features:
<br /> Low DC line voltage; operates down to 1.6 V<br /> Line operation current range 10…140 mA<br /> Icc £ 1.35 mA<br /> Voltage gain range:<br /> microphone amplifier 11…52 dB<br /> telephone amplifier 20…31 dB<br /> Voltage regulator with adjustable static resistance<br /> Provides supply for external circuits<br /> Symmetrical high-impedance inputs<br /> (64 kW) for dynamic, magnetic or piezoelectric microphones<br /> Asymmetrical high-impedance inputs (32 kW) for electret microphones<br /> DTMF signal input with confidence tone<br /> ¨ Mute input for pulse or DTMF dialing<br /> Receiving amplifier for dynamic, magnetic or piezoelectric earpieces<br /> Large gain setting range on microphone and earpiece amplifiers<br />
Function:
Multi-Standart CMOS Single Chip Telephone IC with Dual Soft Clipping
Features:
<br /> Line/speech circuit, LD/MF repertory dialler and tone ringer on one 28 pin CMOS chip<br /> Operating range from 13 to 100 mA (down to 5mA with reduced performance)<br /> Soft clipping to avoid harsh distortion<br /> Volume control of receive signal<br /> Line loss compensation selectable by pin option<br /> Low noise (max. - 72 dBmp)<br /> Real or complex impedance<br /> NET 4 compatible.<br /> LD/MF switchable dialling<br /> Pacifier tone during programming<br /> 31 digit last number redial<br /> Sliding cursor protocol with comparison<br /> Pause key for access pause or wait function<br /> 3 flash keys, 100 ms, 280 ms and 375/600 ms<br /> On chip MF filter (CEPT CS 203 compatible)<br /> Ring frequency discrimination<br /> 3-tone melody generator<br /> Oscillator Frequency (Resonator: Murata CSA 3.58MG312AM)-3.58MHz<br /> 4х4…4х8 Keyboard<br />
Function:
Low Voltage Transmission Circuit with Dialer Interface
Features:
<br /> Low DC line voltage; operates down to 1.6 V<br /> Line operation current range 10…140 mA<br /> Icc £ 1.35 mA<br /> Voltage gain range:<br /> microphone amplifier 11…52 dB<br /> telephone amplifier 20…31 dB<br /> Voltage regulator with adjustable static resistance<br /> Provides supply for external circuits<br /> Symmetrical high-impedance inputs<br /> (64 kW) for dynamic, magnetic or piezoelectric microphones<br /> Asymmetrical high-impedance inputs (32 kW) for electret microphones<br /> DTMF signal input with confidence tone<br /> Mute input for pulse or DTMF dialing<br /> Receiving amplifier for dynamic, magnetic or piezoelectric earpieces<br /> Large gain setting range on microphone and earpiece amplifiers<br />
Function:
Low Voltage Transmission Circuit with Dialer Interface
Features:
<br /> Low DC line voltage; operates down to 1.6 V<br /> Line operation current range 10…140 mA<br /> Icc £ 1.35 mA<br /> Voltage gain range:<br /> microphone amplifier 11…52 dB<br /> telephone amplifier 20…31 dB<br /> Voltage regulator with adjustable static resistance<br /> Provides supply for external circuits<br /> Symmetrical high-impedance inputs<br /> (64 kW) for dynamic, magnetic or piezoelectric microphones<br /> Asymmetrical high-impedance inputs (32 kW) for electret microphones<br /> DTMF signal input with confidence tone<br /> Mute input for pulse or DTMF dialing<br /> Receiving amplifier for dynamic, magnetic or piezoelectric earpieces<br /> Large gain setting range on microphone and earpiece amplifiers<br />
Features:
<br /> Ucс=3.0...6.5 V<br /> Icc=5.0 mA<br /> Improved Attenuator Gain Range: 52 dB Between Transmit and Receive<br /> Low Voltage Operation for Line-Powered Applications (3.0-6.5 V)<br /> 4-Point Signal Sensing for Improved Sensitivity<br /> Background Noise Monitors for Both Transmit and Receive Paths<br /> Microphone Amplifier Gain Set by External Resistors – Mute Function Included<br /> Chip Disable for Active/Standby Operation<br /> On Board Filter Pinned-Out for User Defined Function<br /> Dial Tone Detector to Inhibit Receive Idle Mode During Dial Tone Presence<br /> Standard 28-Pin Plastic Dip Package and SOIC Package Available<br /> Compatible with IL34119 Speaker Amplifier<br />
Function:
Low Voltage Transmission Circuit with Dialer Interface
Features:
<br /> Low DC line voltage; operates down to 1.6 V<br /> Line operation current range 10…140 mA<br /> Icc £ 1.35 mA<br /> Voltage gain range:<br /> microphone amplifier 11…52 dB<br /> telephone amplifier 20…31 dB<br /> Voltage regulator with adjustable static resistance<br /> Provides supply for external circuits<br /> Symmetrical high-impedance inputs<br /> (64 kW) for dynamic, magnetic or piezoelectric microphones<br /> Asymmetrical high-impedance inputs (32 kW) for electret microphones<br /> DTMF signal input with confidence tone<br /> Mute input for pulse or DTMF dialing<br /> Receiving amplifier for dynamic, magnetic or piezoelectric earpieces<br /> Large gain setting range on microphone and earpiece amplifiers<br />
Features:
<br /> Vcc=2...16 V<br /> Low Quiescent Supply Current for Battery Powered Applications<br /> Chip Disable Input to Power Down the IC<br /> Drives a Wide Range of Speaker Loads (8-100 W)<br /> Output Power Exceed 250 mW with 32 W Speaker<br /> Gain Adjustable from 0 dB to 46 dB for Voice Band<br /> Requires Few External Components<br />
Function:
Programmable precision references.<br />This monolithic IC voltage references operate as a low temperature coefficient zener which is programmable from Uref to 16 with two external resistors.<br />The characteristics of these references make them excellents replacements for zener diodes in many applications such as digital voltmeters, power supplies, and operation amplifier circultry
