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Manufacturer Part #


AS Series 3 to 5 V Telephone Line Interface and Speakerphone Circuit - TQFP-32

Mfr. Name: ams
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Product Specification Section
Technical Attributes
Attributes Table
Supply Voltage: 3V to 5V
Operating Temp Range: -25°C to +70°C
Package Style:  TQFP-32
Mounting Method: Surface Mount
Features & Applications

Austriamicrosystems designs, manufactures and markets high performance analog integrated circuits for communications, industrial, medical and automotive markets building on more than 25 years of analog design capabilities, system know-how, and own state-of-the-art manufacturing and test facilities.

Austriamicrosystems’ focuses on power management, sensors & sensor interfaces, portable audio and car access applications, and offers the industry's broadest range of high performance absolute and incremental rotary and linear magnetic encoder devices that are complete SoC solutions integrating Hall element, analog front end and digital signal processing.

AS2522 is a CMOS integrated circuit that incorporates DC and AC line adaptation (DC-mask and synthesized Acimpedance of 1000Ω) as well as a speech circuit with softclipping, line loss compensation and Rx-volume control for handset and handsfree operation. It shall act as an a/bline powered device, which is controlled by a CPU via a serial interface. Furthermore the AS2522 incorporates a DTMF, FSK transmitter, single tone and ringer tone generator.

AS2522 allows to use an off-the-shelf microprocessor without special blocks and functions for telephone applications. DTMF, FSK transmitter, single tone and ringer tone generator can be controlled via the serial interface as well as the gain settings in handset and handsfree mode. 

The AS2522 is ideal for enhanced handsfree feature phones with CallerID and extended displays.

The AS2522B is available in a 32-pin TQFP package with a temperature range of -25°C to +70°C.

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Factory Lead Time:
16 Weeks
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