AN6150 Speech Network Circuit ■ Overview • Wide operating voltage range : 3 to 11.5V • Built-in amplifiers for “Dial Tone” and “DTMF” • Amplifier output switchable. • Each amplifier gain automatically changeable depending on 16 2 15 3 14 4 13 5 12 6 11 7 10 8 2.54 19.2±0.3 ■ Features 1 0.5±0.1 1.22±0.25 Unit : mm The AN6150 is an integrated circuit designed for telephone speech network. It has the basic function necessary to apply a sound signal onto the line and is applicable for various types of handsets. 9 1.1±0.25 6.2±0.3 line current. • Various types of microphones and receivers are available. 5.2±0.25 3.05±0.25 + 0.1 5 0.0 0.3 – 3 to 15˚ 7.62±0.25 16-pin DIL Plastic Package (DIP016-P-0300D) ■ Block Diagram VL VLC ST SF MIC DT DM KT 16 15 14 13 12 11 10 9 SEND Main Amp. V-I Control 2V REG 1V REG Current Check MIC PreAmp. ATT DTMF PreAmp. ATT Logic KT PreAmp. REC PreAmp. REC Main Amp. ATT 1 2 3 4 5 6 7 8 GND V2 V1 AP RO1 RO2 RF RI ■ Pin Descriptions Pin No. Pin name Pin No. Pin name 1 GND 9 KEY In TONE input 2 2V REG. 10 Dial mute SW 3 1V REG. 11 DTMF input 4 ATT control 12 MIC input 5 REC output 13 Transmission filter 6 REC output 14 SIDE tone 7 REC filter 15 LIN filter 8 REC input 16 LIN ■ Absolute Maximum Ratings (Ta=25˚C) Parameter Symbol Rating Unit Line voltage VL 14.4 V Line current IL 135 mA mW Power dissipation (Ta=60˚C) PD 1380 Operating ambient temperature Topr –30 to + 75 ˚C Storage temperature Tstg –55 to + 150 ˚C ■ Electrical Characteristics (IL=40mA, fin=1kHz, Ta=25˚C) Parameter Symbol Condition min typ max Unit Receive System Receiver gain *1 GV– R Vi=–45dBm Receiver output distortion *1 Max. receiver level *1 THD– R Vi=–45dBm Receiver auto pad *1 ∆AP– R KEY IN TONE gain *1 GV–KT VO – R THD=5% Vi=–45dBm, DIL=100 to 20mA Vi=–40dBm, Dial Mute SW– ON –7 –4.5 –2 1 5 dBm % 0 4 –5.5 –3 – 0.5 dB –25 –22.5 –20 dBm –6 –4 –2 dBm 1 5 dBm Transmission System Transmission gain *2 GV–T Vi=–45dBm Transmission output distortion *2 Max. transmission level *2 THD–T Vi=–45dBm Transmission auto pad *2 ∆AP– T DTMF gain *2 GV– DT VO –T DTMF output distortion *2 THD– DT DTMF auto pad *2 ∆AP– DT THD=5% Vi=–45dBm, DIL=100 to 20mA Vi=–35dBm, Dial Mute SW– ON Vi=–35dBm, Dial Mute SW– ON Vi=–35dBm, DIL=100 to 20mA % –2.2 2.8 –6.5 –3.5 –1 dB –8 –6 –4 dBm 1 5 % –6 –4 –2 dB dBm Power Supply *1 *2 DC line voltage (1) VL – 1 IL=12mA 2.4 3 3.6 V DC line voltage (2) VL – 2 IL=127mA 5.4 7.8 10.2 V Internal supply voltage VCC IL=12mA 1.7 2.0 2.3 V Connect the 1kΩ load between Pins5 and 6 for measurement. Connect the 600Ω receiver impedance between Pins16 and 1 and measure it at the receiver side. ■ Electrical Characteristics (cont.) (IL=40mA, fin=1kHz, Ta=25˚C) Parameter Symbol Condition min typ max Unit Dial Mute input Dial mute OFF VDM–H Dial mute ON VDM–L Input current (1) IDM–H VDM=VCC –2.0 Input current (2) IDM–L VDM=0V –2.0 0.8 VCC V 0.3 V 0.1 2.0 µA – 0.2 – 0.02 µA Receiver System K. T. output distortion *1, 4 THD–KT Vi=–42dBV, IL=40mA 1 % Mute K.T. mute *1, 4 M–KT MIC mute *2, 4 M–T DTMF mute *2, 4 M–DT Vi=–15dBV, Dial mute SW– OFF Vi=–40dBV, Dial mute SW– ON Vi=–28dBV, Dial mute SW– OFF 40 dB 60 dB 40 dB Power Supply AC impedance (1)*3, AC impedance (2)*3, 4 ZAC–1 IL=30mA, fin=1kHz 400 670 800 Ω 4 ZAC–2 IL=90mA, fin=1kHz 400 620 800 Ω *1 Connect the 1kΩ load between Pins5 and 6 for measurement *2 Connect the 600Ω receiver impedance between Pins16 and 1 measure it at the receiver side. *3 Connect + – between Pins16 and 1 for measurement. 100µF 820Ω *4 Characteristics above are of reference valuse for design but not guaranteed values. ■ Characteristics Curve ZAC – f 800 7 700 Il.=20mA 600 Il.=80mA AC Impedance ZAC (Ω) 6 5 4 3 2 1 0 500 400 300 200 100 0 40 80 120 0 0.1 160 Line Current IL (mA) –10 6 –12 4 –14 2 THD 0 40 80 120 0 160 υ in = –37dBV f =1kHz –4 10 8 –8 Vout (DTMF) –10 6 –12 4 –14 2 THD 0 40 80 120 Line Current IL (mA) 0 160 Distortion THD (%) –6 –4 10 –6 Vout (MIC) –8 8 –10 6 –12 4 –14 2 THD 40 80 120 Line Current IL (mA) Vout (DTMF), THD – IL –2 10 υ in = –47dBV f =1kHz –2 0 Line Current IL (mA) 0 Transmission Auto Pad Vout (MIC) (dBV) 8 Vout Distortion THD (%) Receiver Auto Pad Vout (REC) (dBV) 10 –8 5 Vout (MIC), THD – IL –4 –6 1 0 υ in = –47dBV f =1kHz –2 0.5 Frequency f (kHz) Vout (REC), THD – IL 0 DTMF Auto Pad Vout (DTMF) (dBV) Il.=50mA 0 160 Distortion THD (%) Line Voltage VL (V) VL– IL 8 ■ Application Circuits • In case of using ceramic receiver R10 4.7kΩ C9 0.022µF E C M Ceramic R9 12kΩ DTMF Key in tone T R11 2.7kΩ R12 R13 9.1 kΩ 9.1kΩ + R8 620 Ω R5 R7 62Ω – C8 0.0022µF C11 100µF Diode 16 15 14 13 R3 SW2 C6 0.068µF C7 0.068µF C10 47µF L1 R4 C5 0.068µF 12 11 10 9 5 6 7 8 + – AN6150 Bridge R14 L2 820Ω 1 2 3 C1+ 470µF – C4 0.068µF SW1 C2 100µF + – 4 C3 0.047µF R1 R2 receiver • In case of using low impedance receiver R10 4.7kΩ C9 0.022µF E C M Ceramic R9 12kΩ DTMF Key in tone T R11 2.7kΩ R12 R13 9.1 kΩ 9.1kΩ + R8 620 Ω R5 R7 62Ω – C8 0.0022µF C11 100µF Diode 16 15 14 13 C6 0.068µF C7 0.068µF C5 0.068µF 12 11 10 9 5 6 7 8 + – AN6150 Bridge L2 R3 SW2 C10 47µF L1 R4 R14 820Ω 1 2 3 4 R15 C1 + 470µF – + – C2 100µF C4 0.068µF SW1 R R1 C3 0.047µF R2