AS2522BF austriamicrosystems AG, AS2522BF Datasheet
AS2522BF
Related parts for AS2522BF
AS2522BF Summary of contents
Page 1
Telephone Line Interface and Speakerphone Circuit AS2522B Key Features Line/Speech circuit, DTMF dialer, FSK transmitter and - tone ringer on a 32-pin CMOS-IC Enhanced voice switching - Background noise monitoring - DTMF tone generator - FSK Transmitter V.23, BELL202, V.21, ...
Page 2
Data Sheet AS2522B Pin description Pin # Symbol ine Current Analog input for sensing the line current ine nput Analog input used for power extraction and line current sensing ...
Page 3
Data Sheet AS2522B Pin # Symbol 22 VPP Loudspeaker Power Supply High power supply for the output driver stage onverter This is an output for controlling the external switching converter. During ringing it converts the ring ...
Page 4
Data Sheet AS2522B Detailed Block Diagram Revision 3.4 Page ...
Page 5
Data Sheet AS2522B Functional Description DC conditions The normal operating mode is from 15mA to 100mA. An operating mode with reduced performance is from 5mA to 15mA. In the line hold range from 0mA to 5mA the device is in ...
Page 6
Data Sheet AS2522B LINE +14dB +8dB Offset Compress comp +3dB FT2 CTXoffset RO Offset Compress comp RECV RECI Speech Rx > Tx_atten X Tx_atten > Tx_atten > Rx YES RX-mode Vol max Vol default Revision 3.4 voice switching ...
Page 7
Data Sheet AS2522B Serial Interface Registers The settings of the AS2522 are stored in 16 registers. Each register has 4 bit data width. Writing data into the AS2522 also causes the sending of the AS2522 status information on Pin D0. ...
Page 8
Data Sheet AS2522B Timing The data format for writing to a register has the following form: xCS CLK Note: The pins xCS,CLK,DI have internal pull-up resistors. Parameter Symbol CLK Pulse width HIGH t6 CLK ...
Page 9
Data Sheet AS2522B Serial interface Registers The following table shows the content of the 16 control registers. For a detailed description of the commands see Application note AN522. Address Data Control registers AS2522A, AS2522B ...
Page 10
Data Sheet AS2522B Address Data Control registers AS2522A, AS2522B gains Handsfree receive endgain Data RXgain 0x0 -20dB : 0xF ...
Page 11
Data Sheet AS2522B Electrical characteristics Electrical characteristics are measured with the Test Circuit application. Typical mean values will not be tested. Absolute maximum ratings Positive Supply Voltage Input Current Input Voltage (LS) Input Voltage (LI, CS) Input Voltage (STB, RI) ...
Page 12
Data Sheet AS2522B Transmit characteristics I =15mA f=800Hz, default settings unless other specified Line Symbol Parameter A Transmit Gain M1/2TX M1/ Transmit Gain M3/4TX M3/ Variation with frequency TX A Control range VRM12 M1/ ...
Page 13
Data Sheet AS2522B Receive characteristics I =15mA f=800Hz, default settings unless other specified Line Symbol Parameter A Receive Gain Receive Gain LO12 LS LO1/LO2 A Variation with frequency RX A Control range VRRO ...
Page 14
Data Sheet AS2522B DTMF characteristics I =15mA w/o operation of any additional external circuitry, unless other specified, default settings Line Symbol Parameter V Tone level low group MFlow DTMF level range range low group ...
Page 15
Data Sheet AS2522B Miscellaneous Symbol Parameter V Pacifier level at RO PARO V Pacifier level at LS1/2 PALS Test circuit 10V 600 Iline Vac Revision 3.4 Conditions Min RL = 150 Ohm Ohm ...
Page 16
Data Sheet AS2522B Typical application Revision 3.4 Page ...
Page 17
Data Sheet AS2522B Bonding Diagram 32 Lead 7x7mm TQFP dimensions Revision 3.4 Page ...
Page 18
... The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental ...
Page 19
... Shin Yokohama Kohoku-ku, Yokohama 222-0033, Japan Phone: +81/45/474 0962 Fax: +81/45/472 9845 Distributors & Representatives austriamicrosystems AG is represented by distributors in the following countries. Please contact your nearest regional sales office for the distributor address: Spain, Israel, Korea, Hong-Kong, Taiwan, Malaysia, Singapore, India, Brazil Application Support Please contact your local sales office or your distributor ...