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37953

Features: · MONOCHIP SLIC SUITABLE FOR SHORT LOOP APPLICATIONS· 3.3V SUPPLY· IMPLEMENTS ALL KEY FEATURES OF THE BORSHT FUNCTION· DIFFERENTIAL OR SINGLE-ENDED Rx INPUTS· INTEGRATED TRAPEZOIDAL WAVEFORM RINGING plus SINUSOIDAL and PWM WAVEFORM RINGING CAPABILITY· TWO SELECTABLE PATH FOR SINUSOIDAL R...

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SeekIC No. : 004229212 Detail

37953: Features: · MONOCHIP SLIC SUITABLE FOR SHORT LOOP APPLICATIONS· 3.3V SUPPLY· IMPLEMENTS ALL KEY FEATURES OF THE BORSHT FUNCTION· DIFFERENTIAL OR SINGLE-ENDED Rx INPUTS· INTEGRATED TRAPEZOIDAL WAVEFO...

37953 Data Sheet

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Part Number:
37953
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/8/13

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Product Details

Description



Features:

· MONOCHIP SLIC SUITABLE FOR SHORT LOOP APPLICATIONS
· 3.3V SUPPLY
· IMPLEMENTS ALL KEY FEATURES OF THE BORSHT FUNCTION
· DIFFERENTIAL OR SINGLE-ENDED Rx INPUTS
· INTEGRATED TRAPEZOIDAL WAVEFORM RINGING plus SINUSOIDAL and PWM WAVEFORM RINGING CAPABILITY
· TWO SELECTABLE PATH FOR SINUSOIDAL RING INJECTION
· SOFT BATTERY REVERSAL WITH PROGRAMMABLE TRANSITION TIME
· ON HOOK TRANSMISSION
· LOW POWER DISSIPATION IN ALL OPERATING MODES
· AUTOMATIC DUAL BATTERY OPERATION
· LOOP START, GROUND START FEATURES
· SURFACE MOUNT PACKAGE
· -40 TO +85°C OPERATING RANGE
· TEST FUNCTION
· NO EXTERNAL COMPONENTS FOR POWER DISSIPATION


Pinout

Connection Diagram


Specifications

Symbol Parameter Value Unit
VBAT Battery voltage -82 +VCC V
VCC Positive supply voltage -0.4 to +7 V
VDD Control interface Supply Voltage -0.4 to +7 V
A/R/BGND AGND respect BGND -2 to +2 V

Note: 1. In case of power up, power failure or hot insertion with VBAT1, VCC present and VBAT2 floating the Absolute Maximum Rating can be exceeded. This effect can be prevented ensuring that VBAT2 is always present before  AT1and VCC or connecting one schottky diode (e.g. BAT49X or equivalent between .VBAT1and VBAT2).




Description

The 37953 is a low voltage SLIC suitable for short loop applications. All the BORSHT and test  functions (phone detection, loop-back, short circuit detection) are integrated in this device. It provides three ringing modes: Sinusoidal, Trapezoidal and PWM waveform.

In sinusoidal ringing modes, depending on the CODEC's functionalities and characteristics Rxin+/Rxinor Rg+/Rg- paths can be selected. When CODEC can manage low frequency signals Rxin+/ Rxin- will be used.

37953 can also limit the peak current during On- Hook/Off-Hook transition and Ring-trip detection. The device is based on BCD3S 90V technology and it can work at 3.3V power supply.

The TQFP44 Package with SLUG increases the LIC performance in terms of power dissipation making unnecessary the use of any external power components.




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