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 />
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 /> 20 to 1 frequency range with an external resistor<br /> Logic compatible output with 100 mA current sinking capability<br /> Bandwidth adjustable from 0 to 14%<br /> High rejection of out of band signals and noise<br /> Immunity to false signals<br /> Highly stable center frequency<br /> Center frequency adjustable from 0.01 Hz to 500 kHz<br />
Features:
<br /> 20 to 1 frequency range with an external resistor<br /> Logic compatible output with 100 mA current sinking capability<br /> Bandwidth adjustable from 0 to 14%<br /> High rejection of out of band signals and noise<br /> Immunity to false signals<br /> Highly stable center frequency<br /> Center frequency adjustable from 0.01 Hz to 500 kHz<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 />
