AN6426NK Panasonic, AN6426NK Datasheet
AN6426NK
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AN6426NK Summary of contents
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... ICs for Telephone AN6426NK Hands-free Speech Network IC Overview The AN6426NK incorporates both speech network and hands-free functions. Its well designed block configura- tion allows realization of a hands-free telephone with a minimal number of components. Features Incorporates all the functions required of a hands-free telephone. ...
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... AN6426NK Pin Descriptions Pin No. Symbol Description 1 GND Ground 2 AGC Loudspeaker amp. time constant 3 SAO Loudspeaker amp. output 4 SAI Loudspeaker amp. input 5 Vr2 Reference voltage (2) 6 VPO Loudspeaker amp. power supply 7 RO1 Receiver output (1) 8 RO2 Receiver output (2) 9 RBO Receiver buffer output ...
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... T12–T11 Value V =3V OSP (1) THD=5% V =5V OSP (2) THD=5% V =7V OSP (3) THD= =–20dBm =60mA L AN6426NK Unit ˚C ˚C Range 3V to 12V min typ max Unit 3.6 4.2 5.2 V 9.0 11.0 12.0 V 1.8 2.3 2.8 V 6.0 7.0 9.0 V 0.95 1.10 1.35 V 1.10 1.20 1. ...
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... F S2 C24 + + 0.001 220 220 6 C23 C22 R19 R28A C33 C34 4 5.1 R22 AN6426NK 220 3300 220 C5 R35 k 0.033 ...
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... Input : Pin10, Pin40 The switch changes over receiver input for hand set com- munications and MF input. Receiver automatic pad Control : Pin33 Common with transmitter automatic pad Receiver buffer amplifier Output : Pin9 Outputs a receiver signal for hand-free communications at low inpedance. AN6426NK ...
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... AN6426NK Pin Descriptions (cont.) Receiver output Output : Pin7, Pin8 Drives the ceramic receiver directly. The gain depends on an internal resistance and is about 23dB. The frequency characteristic control capacitors C5 (0.033 F) and C6 (0.033 F), and output level control resistors R2(1k )and R3 (1k )are attached Hand-free Speech network Block (SP ...
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... Plus input amplifier of about 34 dB and driven The input is of only AC component due to C3 (10 F). The output drives the 25 attack time and recovery time for AGC is determined by C1 (10 F) and R1(220k ). AN6426NK 0V in the transmitter 20– speaker througt C2 (220 F). The 2 ...
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... AN6426NK Pin Descriptions (cont.) 3. Power Supply Block HS voltage source ( CC1 Stabilized by the Pin36 and C22 (220 F). HS reference voltage ( Results resistance division (20k )from the CC Pin34 and V , and stabilized by C22 (220 F) CC Constant voltage source (VB) Results in 1.2V by the Pin35 (band gap reference). ...
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... Circuit Current I (mA) L Hands-free Speech network Transmitter/Receiver Switching Receiver 10mV in Speaker 1 V out Mic 20mV out 40ms AN6426NK Handset Transmitter I/O Characteristics 10 0 –10 –20 –30 –40 –50 –70 – 60 –50 –40 –30 –20 –10 Microphone Input (dB) 37 Log Amplifier Characteristics ...