as2524t austriamicrosystems, as2524t Datasheet
as2524t
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as2524t Summary of contents
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... Few external components - Block Diagram Revision 1.12, Preliminary austriamicrosystems PRELIMINARY DATA SHEET General Description AS2523/ CMOS integrated circuit that incorporates DC and AC line adaptation (DC-mask and synthesized AC- impedance of 1000 ) as well as a speech circuit with softclipping, line loss compensation and Rx-volume control for handset and handsfree operation ...
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... Differential input for the handsfree microphone (electret icrophone Input Differential input for the handsfree microphone (electret eceive utput to Output for driving a dynamic earpiece with an impedance from 150 Revision 1.12, Preliminary Function ource andset austriamicrosystems to 300 Page ...
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... Analog input for the handsfree receive path. Should be connected to RO via coupling capacitor. 21 RECV Analog input for receive voice switching path. 24 VSSA Power supply pin for LO output amplifier. 22 VPP Power supply pin for LO output amplifier. 28 TONEIN Analog input for DTMF-signals. Revision 1.12, Preliminary austriamicrosystems Function loudspeaker Page ...
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... Data Sheet AS2523, AS2524, AS2524B Detailed Block Diagram Revision 1.12, Preliminary austriamicrosystems Page ...
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... The following table shows how voice switching is controlled Voice Backgnd speech switching noise RX monitor austriamicrosystems LS is set to +46dB. . There is no LLC for this path receive path is set to +7.5dB. It prevents harsh p. LO receive path is set to +32dB. Page ...
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... Tx-gain 0db to -20dB -50dB to -30dB -25 -25 -50dB 0dB IDLE-mode TX-mode 0dB -10dB -20dB Vol min -25dB -30dB -40dB -50dB austriamicrosystems +23dB Peak Compress Offset detector comp FT1 Cmicoffset +9dB Remark adjustable with VOL-setting middle position independent of VOL-setting TX-gain RX-gain Page ...
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... Figure 2 Typical Rx Gain Characteristics Line Loss Compensation Revision 1.12, Preliminary No LLC (AS2523, AS2524) LLC high LLC low (AS2523,AS2524B) (AS2523 LLC (AS2523, AS2524) LLC low LLC high (AS2523) (AS2523,AS2524B austriamicrosystems DC Line Current 70 80 (mA) DC Line Current 70 80 (mA) Page ...
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... CLK Pulse width LOW T5 xCS to first falling CLK- T1 edge setup time DIN to CLK setup time T3 DIN to CLK hold time xCS CLK DIN Revision 1.12, Preliminary MIN TYP MAX 100ns 100ns 50ns 50ns 50ns austriamicrosystems D0 Page ...
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... BGN off 1... BGN on Min. receive volume Max. receive volume 39dB : 54dB 19dB : 34dB 1... fg=2000Hz 1... Rxcomp=RECV 1... Tx-path muted 1... Mask acitivated austriamicrosystems Default value after reset for AS2523, for AS2524 LH bond AS2524HF option 0111 0111 ...
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... Default = off d) Set the required Tx and Rx gains in Registers A and B Default = 37dB Tx gain, 1dB Rx gain Revision 1.12, Preliminary austriamicrosystems Additional settings in Handsfree mode Note: change the default settings only if necessary click-free startup can be achieved by starting up in handset mode (=default) and then switching to handsfree, once the chip has stabilized ...
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... AS2524 LI Voltage 4.5V LLC No LLC HF TX-Gain +46dB HF RX-Gain +34dB Rx-Softclip Off Tx-Softclip Off Tone Off BNM On Revision 1.12, Preliminary Mode AS2524B 4.5V LLC high (45mA to 75mA) +43dB +7.5dB Off Off Off AS2524B 4.5V LLC high (45mA to 75mA) +52dB +34dB Off Off Off On austriamicrosystems Page ...
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... LLC high (45mA to 75mA) +14dB -36dB@Ro –15dB@Lo relative to Pin LS AS2524 AS2524B 4.5V No LLC LLC high (45mA to 75mA) +37dB +7.5dB Off On Deactivated Deactivated 2000kHz (10nF from TXO->TXV) 120ms/6dB 120ms/6dB 300mV austriamicrosystems 4.5V +43dB +7.5dB Off On 300mV -0.3V <= V < +/- 25mA -0.3V <= V <= 12V in -0.3V <= V < -2V <= V < ...
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... Conditions Min Type Z 1000 AC(syn)= 35 +36.5 39 +42.5 Z =1000 AC(syn) 43 +45 +14dB =1000 AC(syn 500Hz … 3.4kHz ±0.8 16 steps -7/+8 16 steps -7/+8 V =0.25VRMS 100 austriamicrosystems Max Units Test 3 4 Max Units Test ...
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... T =25°C AMP Handset mode Gain = 36.5dB Mute activated 60 Conditions Min Type 6 +7.5 =1000 AC(syn) +32.0 +34 =1000 AC(syn) ±0.8 -7/+8 -7/+8 =0.25VRMS LS =0.25VRMS 100 austriamicrosystems Type Max Units Test ± -72 dBmp Max Units Test +36 dBr ...
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... AS2523/24 RECI Q1 11 VSS BC327 24 VSSA RECV VSS VSS xCS / xMUTE 22 VPP DI / xPD CLK / HFI CBN D1 5V1 VSS VSS VSS VSS austriamicrosystems Max Units Test -68 dBmp /° 100nF 7 C6 100nF Vac V3 Vac 5 C6 100nF ...
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... Data Sheet AS2523, AS2524, AS2524B Typical application AS2523 Revision 1.12, Preliminary austriamicrosystems Page ...
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... Data Sheet AS2523, AS2524, AS2524B Typical application AS2524 and AS2524B Revision 1.12, Preliminary austriamicrosystems Page ...
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... Revision 1.12, Preliminary austriamicrosystems Devices sold by austriamicrosystems AG are covered by the warranty and patent identification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. ...
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... 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 ...