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LT1684

Linear Technology
Part Number LT1684
Manufacturer Linear Technology
Description Micropower Ring Tone Generator
Published Mar 22, 2005
Detailed Description LT1684 Micropower Ring Tone Generator FEATURES s s DESCRIPTIO s s s s s s s s s Allows Dynamic Control of Output F...
Datasheet PDF File LT1684 PDF File

LT1684
LT1684

Overview
LT1684 Micropower Ring Tone Generator FEATURES s s DESCRIPTIO s s s s s s s s s Allows Dynamic Control of Output Frequency, Cadence, Amplitude and DC Offset Active Tracking Supply Configuration Allows Linear Generation of Ring Tone Signal No High Voltage Post-Filtering Required Capacitive Isolation Eliminates Optocouplers Low Distortion Output Meets International PTT Requirements Differential Input Signal for Noise Immunity User Adjustable Active Output Current Limit Powered Directly From High Voltage Ringer Supply—No Additional Supplies Necessary Supply Current: < 1mA 2% Signal Amplitude Reference Available in 14-Pin SO and DIP Packages The LT®1684 is a telecommunication ring tone generator.
The IC takes a user-generated pulse width modulated (PWM) input and converts it to a high voltage sine wave suitable for telephone ringing applications.
The LT1684 receives capacitor-isolated differential PWM input signals encoded with desired ring output cadence, frequency, and amplitude i...


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