參數(shù)資料
型號: U3761MB-TFN
廠商: ATMEL CORP
元件分類: 無繩電話/電話
英文描述: Universal Telephone IC - All Functions Integrated
中文描述: TELEPHONE MULTIFUNCTION CKT, PDSO44
封裝: SSOP-44
文件頁數(shù): 1/27頁
文件大小: 342K
代理商: U3761MB-TFN
Rev. 4744A–CORD–09/03
Features
Speech Circuit
Adjustable DC Characteristic
Symmetrical Input of Microphone Amplifier
Receiving Amplifier for Dynamic or Piezo-electric Earpieces
Automatic Line-loss Compensation
Dialer
DTMF/Pulse Switchable
Pulse Dialing 66/33 or 60/40 or DTMF Dialing Selectable by Pin
Selectable Flashing Duration by Key Pad
Pause Function
Optical Indication of Temporary DTMF Mode
Keytone for Pulse Dialing
Last Number Redial up to 32 Digits
Three by 17 Digits Direct (One-touch) Memory
Ten by 17 Digits Indirect (Two-touch) Memory
Notice Function up to 32 Digits
Standard Low-cost Crystal 3.58 MHz or Ceramic Resonator
Handset Mute (Privacy) with Optical Indication
Additional Toggle Flipflop
Internal Loop Interrupt Detection
Tone Ringer
2-tone Ringer
Adjustable Volume
RC Oscillator
Adjustable Threshold
Benefits
Low Number of External Components
High Quality through One IC Solution
Electrostatic sensitive device.
Observe precautions for handling.
Description
Atmel’s low-voltage telephone circuit U3761MB-T performs all the speech and line
interface functions required in an electronic telephone set, a tone ringer, a pulse and
DTMF dialing with redial, notice function, and 13 memories. Operation below 15 mA is
possible with reduced performance.
Universal
Telephone IC -
All Functions
Integrated
U3761MB-T
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