AMS  AS2540  Audio Control, Telephone, 3.6V to 5V, 2 Wire, Serial, SOIC, 28 Pins, -15 °C

AMS AS2540

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  • Manufacturer:
  • Newark Part No.: 59P4002
  • Manufacturer Part No AS2540

Product Overview

The AS2540 is a remote-controlled single-chip telephone CMOS Integrated Circuit that incorporates a speech circuit, MF dialer, ring frequency detector, ring melody generator and a two wire serial interface. It is a/b-line-powered device in order to interface a main-powered CPU to the analogue telephone line. It can operate in a so-called mainpower mode and in a backup mode. During mainpower mode, a watchdog timer is running on this, which has to be reset via the serial interface, which is connected to the CPU through opto-couplers.
  • Programmable via 2-wire serial interface
  • Watch dog timer for backup mode
  • Additional input for modem transmit path
  • Additional output for modem receive path
  • Low noise (maximum -72dBm)
  • Soft clipping for handset operation to avoid harsh distortion
  • Line loss compensation selectable by pin option
  • Real and complex impedance selectable by external
  • Side tone adaption selectable by external components
  • Ring frequency discrimination


Consumer Electronics; Computers & Computer Peripherals; Industrial
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Product Information

  • Audio Control Type Telephone
  • Supply Voltage Range 3.6V to 5V
  • Control Interface 2 Wire, Serial
  • Audio IC Case Style SOIC
  • No. of Pins 28Pins
  • Operating Temperature Min -15°C
  • Operating Temperature Max 60°C
  • Packaging Each
  • MSL -
  • Control / Process Application Web Telephones, Fax Machines, Hospital Communication Units, Answering Machines
  • SVHC No SVHC (15-Jun-2015)

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Availability:  5

Available until stock is exhausted

  • 5 in stock for same day shipping

Price for: Each

Minimum order quantity: 1

Order multiple quantity: 1

Price: $3.08 $3.08



Quantity List Price Your Price
1 - 24 $5.03
25 - 49 $4.77
50 - 99 $4.52
100+ $4.24

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