an6472nfbp Panasonic Corporation of North America, an6472nfbp Datasheet
an6472nfbp
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an6472nfbp Summary of contents
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... AN6472NFBP Cordless Telephone Speech Network IC Incorporating Cross-Point Switch Overview The AN6472NFBP is a speech network IC which includes a receiver noise reducing function and is most suitable for quality cordless telephones. It incorporates a cross-point switch controlled by serial input. It allows speech path switching and mixing, and provides for three- or four-person communication and other sophisti- cated functions ...
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... AN6472NFBP Block Diagram – L(07) L(OF REF 10dB GND 0dB 53 – – 56 6dB 57 0dB 58 0dB 59 DCC 60 P.O.R Line Supply 61 Monitor GND ALC VOX Det. Det. – + 0dB 0dB ALC 0/ ...
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... External supply voltage input 61 Internal supply voltage output 62 Circuit voltage control (2) 63 Line current bypass (2) 64 Line current bypass (1) Symbol Rating 135 L P 640 D T –20 to+75 opr T –55 to+150 stg AN6472NFBP Description Unit ˚C ˚C 3 ...
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... AN6472NFBP Recommended Operating Range Parameter Operating supply voltage range (1) Operating supply voltage range (2) Recommended Operating Conditions (Ta =20 to +75˚C) Parameter Supply voltage Clock frequency CLK Input pulse width STB DATA Setup time STB DATA Hold time STB Input pulse width (high) ...
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... V – IM1 V =0V –38dBm =80mA, V =0V – IM2 V = –38dBm in I =30mA–80mA, V =0V – –38dBm in is changed from mA. If pin 11 (auto. PAD control)is connected to pin 61 (int. AN6472NFBP min typ max Unit 5.3 5.95 6.6 V 7.55 8.2 8.9 V 4.6 4.85 5.0 V 2.25 2.5 2 0.1 ...
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... AN6472NFBP Electrical Characteristics (cont.) (Ta=25 2˚C) Parameter Trans. max. output (I-1) Trans. max. output (I-2) DTMF gain (I-1) DTMF gain (I-2) DTMF auto. PAD width (I)*1 DTMF max. output (I-1) DTMF max. output (I-2) Transmitter Amp. On External Power Supply Trans. gain (E-1) Trans. gain (E-2) Trans. auto. PAD width (E)*1 Trans. max. output (E-1) Trans ...
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... Input AUX IN – 36dBm – RO L–SW (h30 Input AUX IN – 36dBm – TSO L–SW (h37 =5V, line current I = 0mA, input signal frequency=1 kHz, control CC L AN6472NFBP min typ max Unit –13.4 –11.4 –9.4 dBm 0.8 2.5 mVrms ...
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... AN6472NFBP Electrical Characteristics (cont.) (Ta=25 2˚C) Parameter Link SW Input MIC input gain*1 Rec. input gain*1 Intercom input gain RF1 input gain RF2 input gain SP link input gain Link Maximum Output SP OUT max. output DH OUT max. output RF1 OUT max. output RF2 OUT max. output L-REC OUT max ...
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... ALC and ALC output distortion 2% I =0mA, V =5V, and L CC DALC V = –45dBm to –20dBm in V =5V –10dBm 0mA, and M L – REC LSW (h07)= ON/OFF AN6472NFBP min typ max Unit 0.2 70 160 250 A – 0.2 0.3 V –1 – 0.1 A 450 570 750 ...
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... AN6472NFBP Electrical Characteristics (Cont.) (Design Values for Reference) (Ta=25 2˚C) The following are design values for reference, not guaranteed values. Parameter EQ amp. mute attenuation Rec. preamp. input impedance EQ amp. input impedance VOX amp. input impedance Link Switch Link SW mute attenuation MIX preamp. input impedance AUX preamp ...
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... Pin 19 and this pin determines the f. characteristics of the DTMF preamp. signals are input through a capacitor to this pin. 19 when DMC is low at Pin 40. 18 AN6472NFBP Remarks • This pin must grounded if reduction is not used. Vref–SN • The greater C7, the lon- ger the attack time. The ...
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... AN6472NFBP Pin Descriptions (cont.) Pin No. Pin name I/O Waveform MIC 20 O OUT V – SN REF MIC – SN REF (+) MIC – SN (–) REF 23 DMC – 0.2V CONT Line DC voltage L– CPC O 0.2V Line interruption 5V 26 STR ...
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... Time stamp link output : •This is a buffered link switch output. From LINK SW •Output impedance Recording link output : •This is a buffered link switch output. •Output impedance AN6472NFBP Remarks 31 Vref – SN 50k When address 2F of the 0/12dB + 32 cross-point switch is OFF, the output amplifi- er gain is set ...
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... AN6472NFBP Pin Descriptions (cont.) Pin No. Pin name I/O Waveform ALC (with a capacitor) ALC Input DET Full-wave rectification (with no capacitor) SP – – SN REF RD PRE – – REF RD PRE – – REF REC PRE – ...
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... R35 to GND. R35 must be 1 more. Line current bypass (1) : • Line current is bypassed from this pin through R36 to Pin 2. R36 must be 1 more. AN6472NFBP Remarks The gain of the MIX to LINK SW preamp. is calculated the + same way as the rec. ...
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... AN6472NFBP Logic Specifications Basic Block Diagrams Output (cross-point SW and other controls) Latch Circuit Decoder Shift Register A6 Time Charts (Assuming the address h26 latch set) Clock Data 1 (A6) Strobe 1. Data is read into the shift register in synchronization with a rising edge of the clock, with the higher data being shifted sequentially on a first-come highest-bit basis ...
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... Handset receiver amp. mute 2F SP output amp. gain 12 dB down 3F MIC preamp. mute 09, 21, 29 Receiver noise reduction is enabled. Note) Address is in hexadecimal. Intercom RF1 AN6472NFBP Recording Time stamp RF2 ...
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... AN6472NFBP Timing Charts CLK DATA STR P D 1,600 1,400 1,200 1,000 800 640mW 600 400 200 Ambient Temperature Ta (˚C) 18 1/f CLK t Wh (CLK) 90% 2.5V 10 (CLK) 2.5V 2. (DATA) h (DATA (STB) 2.5V —Ta 900mW 75 100 125 150 ICs for Telephone t WL (CLK) 90% 2 ...
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... AN6472NFBP AN6472NFBP Applicant Circuit OUT RF2. OUT RF1. OUT DH. 10k R18 0560pF C18 F 0.033 10k R19 C19 JP4 OUT TS F 0.068 C39 JP6 F 22 C20 220k R20 JP7 0.1F C21 10k F 0.15 C22 R21 F 0.01 10k C23 R22 + R24 C24 47 R25 1k R27 F 0.47 C25 ...
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