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| ( DataSheet : www..com ) BL1062/BL1062A Low voltage transmission circuits with dialer interface 1 16 15 14 13 12 11 10 9 GENERAL DESCRIPTION The BL1062 and BL1062A are Bipolar integrated circuits that perform all speech and line interface functions required in fully electronic telephone sets. They perform electronic switching between dialing and speech. The ICs operate at line voltage down to 1.6V DC to facilitate the use of more telephone sets connected in parallel. EOA 2 3 4 6 7 8 BL1062 ) 5 ( 1062A 16 1/2AEAOaEU*a FEATURES Low DC line voltage; operates down to 1.6V Voltage regulator with adjustable static resistance Provides a supply for external circuits Symmetrical hign-impedance input(64k| )for dynamic, magnetic or piezoelectric microphones Asymmetrical hign-impedance input(32| )for electret microphones DTMF signal input with confidence tone Mute input for pulse or DTMF dialing BL1062: active HIGN (MUTE) BL1062A: active LOW ( MUTE ) Receiving amplifier for dynamic, magnetic or piezoelectric earpieces Large gain setting ranges by external resistance on receiving and transition amplifiers Line loss compensation (line current dependent) for microphone and earpiece amplifiers Compatible with TEA1062/1062A Process with 3um Bipolar technics PARAMETERS LIMITING VALUES Positive continuous line voltage Vln 12V Repetitive line voltage during switch-on or line interruption Vln(r) 13.2V Repetive peak line voltage for a 1 ms pulse per 5 s Vln(rm) 28V Line current Iline 140mA Input voltage on all other pins Vi -0.7 Vcc+0.7V Total power dissipation Ptot 666mW Storage temperature Tstg -40 +125ae Operating ambient temperature Tamb -25 +75ae Address No.810, YiShan Road ShangHai China Tel 86-021-64850700 Fax 86-64852222 Zip.200233 www..com BL1062/BL1062A Low voltage transmission circuits with dialer interface CHARACTERISTICS SYMOL CONDITIONS Vln MIC input open-circuit Iline=1mA Iline=4mA Iline=15mA Iline=100mA Vln Iline=15mA RVA(LN to REG)=68k| RVA(REG to SLPE)=39k| Icc Vcc=2.8V Vcc Iline=15mA MUTE=Hign(1062)Low(1062A) Ip=1.2mA Ip=0mA Zi (microphone Between MIC- and MIC+ inputs) CMRR Gv (microphone Inputs) | Gvf | GvT MIN. ------- TYP. 1.6 1.9 4.0 5.7 3.5 4.5 0.9 2.7 3.4 64 82 52.0 A 0.2 A 0.2 MAX. --4.25 6.5 --1.35 ----53.5 --- UNIT V V V V V V 2.2 ---50.5 --- V V k| dB dB dB dB Iline=15mA R7=68k| F=300 and 3400 Hz Without R6; Iline=15mA; Tamb=-25 and +75ae Iline=15mA R7=68k| F=300 and 3400Hz Without R6; Iline=15mA; Tamb= -25ae and +75ae THD=10% Iline=4mA Iline=15mA Zi (DTMF input) Gv (DTMF input) | | Gvf GvT -24.0 --A A 20.7 25.5 0.2 0.2 -27.0 --- k| dB dB dB Vln (rms) Zi (receiving Iline=15mA R7=68k| f=300 and 3400Hz without R6;Iline=15mA; Tamb= -25ae and +75ae ---29.5 --A A 4 -- 0.8 2.3 21 31 0.2 0.2 -- ---32.5 --| V V k| dB dB dB amplifier) Gv (receiving amplifier) | Gvf | GvT Zo (receibing THD=2%;sine ware drive; R4=100k| ;Iline=15mA; Ip=0mA; RL=150| No.810, YiShan Road ShangHai China Tel amplifier) Vo (rms) 0.22 0.33 -- V Address 86-021-64850700 Fax 86-64852222 Zip.200233 BL1062/BL1062A Low voltage transmission circuits with dialer interface RL=450| THD=10%;R4=100k| ; RL=150| ;Iline=4mA MUTE=High(1062) MUTE=Low(1062A) R4=100k| ;RL=300| ; MUTE=High(1062) MUTE=Low(1062A) R6=100k| ;Iline=70mA 0.3 --0.48 15 70 ---V mV dB Vo (rms) Gv (from microphone to LN) | Gv (from DTMF to QR Gv(automatic Gaincontrol AGC) Iline H Iline L PINNING SYMBOL LN GAS1 GAS2 QR GAR MICC MIC + STAB VEE IR DTMF MUTE Vcc REG AGC SLPE | | ----- -17 -5.8 23 61 ----- dB dB mA mA PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 DESCRIPTION Positive line terminal Gain adjustment; transmitting amplifier Gain adjustment; transmitting amplifier Non-inverting output; receiving amplifier Gain adjustment; receiving amplifier Inverting microphone input Non-inverting microphone input Current stabilizer Negative line terminal Receiving amplifier input Dual-tone multi-frequency input Mute input Positive supply decoupling Voltage regulator decoupling Automatic gain control input Slope(DC resistance) adjustment LN GAS1 GAS2 QR GAR MICC MIC+ STAB BL1062A SLPE AGC REG VCC MUTE DTMF IR VEE Pin configuration for BL1062A BLOCK DIAGRAM Address No.810, YiShan Road ShangHai China Tel 86-021-64850700 Fax 86-64852222 Zip.200233 BL1062/BL1062A Low voltage transmission circuits with dialer interface Typical application of BL1062A,with piezoelectric earpiece and DTMF dialing R1 R10 13 BAS11 (2x) BZX79 C12 R2 130K C2 1 LN IR 620 13 Vcc + C1 100 F + DTMF OR TEA1062A 5 C7 1nF 7 6 GAR (1) MIC+ MICSLPE 16 MUTE 12 from dial and control circuits 11 C5 100nF 10 Telephone line 4 BZW14 (2x) A4 R3 3.92 K R10 R10 R10 GAS1 2 R7 R VA (R16.14 ) C8 1nF C3 4.7 F R6 R5 36 K GAS2 3 REG 14 AGC 15 STAB 8 EE 9 R8 390 Z ba1 R9 20 C6 100pF Address No.810, YiShan Road ShangHai China Tel 86-021-64850700 Fax 86-64852222 Zip.200233 |
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