SL5021/P Semiconductor UNIVERSAL SPEECH NETWORK Description The SL5021/P can fulfill the standards of other countries by changing the external component. Dynamic or piezoelectric type can be used with receiver Each gain is controlled with AGC in accordance with the line current. The SL5021/P can be operated down to DC line 1.6V Features • Independent adjustment of DC resistance and AC impedance. • Voltage regulator with adjustable static resistance • Symmetrical high-impedance inputs for dynamic magnetic or piezo-electric microphones • Receiving amplifier for dynamic magnetic or piezo-electric earpieces • DTMF signal interface • Low DC line voltage : operated down to 1.6V • Mute function • DC line voltage adjustment facility Ordering Information Type NO. Marking Package Code SL5021 SL5021 SOP16 SL5021P SL5021 DIP16 Outline Dimensions SOP16 unit : mm DIP16 KSI-W010-000 1 SL5021/P Absolute Maximum Ratings (Ta = 25° C) Characteristic Symbol Rating Unit Line Voltage VL 12 V Line Current IL 140 mA Power Dissipation PD 666 mW Operating Temperature Topr -25 ~ +70 °C Storage Temperature Tstg -40 ~ +125 °C Block Diagram 12 MUTE DTMF 11 Attenuator RXGA Mute Logic 5 10 Rxi Amp RXI RXO 4 Rx Amp TXGA1 Mfi Amp 2 MIC+ V L 1 7 6 Mic Amp SLPE MIC- 16 Tx Amp TXGA2 DTMF Amp 3 Low Voltage Vcc 13 Bias Reference AGC AGC VEE 9 REG STAB 15 8 14 PIN Description Pin No. Symbol Description 1 VL 2 TXGA1 TX gain adjustment 3 TXGA2 TX gain adjustment 4 RXO 5 RXGA 6 MIC- Mic(-) input 7 MIC+ Mic(+) input Positive power line and TX Amp output RX output RX gain adjustment KSI-W010-000 2 SL5021/P PIN Description (continued) Pin No. Symbol Description 8 SRAB 9 VEE Ground 10 RXI Rx input 11 DTMF DTMF signal input 12 MUTE 'H' Mute input 13 VCC Internal power supply pin 14 REG Voltage regulator decoupling 15 AGC Automation gain control input 16 SLPE Slope(DC resistance) adjustment Current stabilizer Electrical Characteristics Characteristics Symbol Test Conditions Min. Typ. Max. - 1.6 1.9 - 3.55 4 4.25 ILine = 100mA 4.9 5.7 6.5 ILine = 140mA - - 7.5 ILine = 15mA - (-)0.3 - mV/k ILine = 15mA RVA(RE G to SLPE) = 39k - 4.5 - V ILine = 15mA RVA(V L to REG) = 68k - 3.5 - V 2.2 2.7 - - 3.4 - Between MIC- & MIC+ - 64 - MIC- or MIC+ to V- - 32 - - 82 - dB 50.5 52 53.5 dB - ± 0.2 - dB - 20.7 - kΩ ILine = 1mA ILine = 4mA Line Voltage Variation with Temperature VL △VL/△T Voltage drop over circuit between VL & VEE with external resistor RAV RVA Supply Voltage VCC MIC input impedance Common mode Rejection Ratio Zi( mic) CMRR(T X) ILine = 15mA Ip=1.2mA Mute=High Ip=0mA - TX Gain Gv(T X) R7=68K, Vin=3mVrms TX Gain frequency Response △GTXF f=300 ~ 3400Hz DTMF input impedance ZI(MF) KSI-W010-000 Unit V V kΩ 3 SL5021/P Electrical Characteristics Characteristics Symbol Test Conditions DTMF Gain GV(MF) R7=68k, DTMF mode DTMF Gain Response △GMF R7=68k f=300~3400Hz TX Gain Adjustment TX Dynamic output Voltage TX noise output Voltage △Gvad(T X) R7 = 68k→25k To(T X) Vno(T X) IL=4mA THD=10% IL=15mA R7=68k Between pin6 & pin7=200 Ω Min. Typ. Max. Unit 24 25.5 27 dB - ± 0.2 ± 5 dB (-)12 (-)8 (-)7 dB - 0.8 - 1.7 2.3 - - (-)69 - dBm Vrms RX input impedance Zi(RX) - - 21 - kΩ RX output impedance Zo(RX) - - 4 - kΩ RX Gain Gv(RX) R4=100k, RL=300 Ω 29.5 31 32.5 dB RX Gain Frequency Response △GTXF f=300 ~ 3400Hz - ± 0.2 - dB RX Dynamic output voltage Vo(RX) THD=2% R4=100k RL=150 Ω 0.22 0.33 - RL=450 Ω 0.3 0.48 - - 50 - µV (-)13 (-)11 (-)9 dB RX noise output voltage RX Gain adjustment Vno(RX) RL=300 R4=100K IL= 15mA, Rxi=open △Gv.adj(RX) R4=100k → 28K V VIH(Mute) - 1.5 - Vcc VIL(Mute) - - - 0.3 Mute input current IMute - - 8 15 µA Mute Attenuation Matt(TX) MIC+ or MIC- to VL (CCIT weighted) - 70 - dB DTMF Gain Gv(DTMF) voltage gain from DTMF to Rxo - 70 - dB TX Gain variation range By AGC △GTXA R6 = 110k IL=15mA ~ 70mA - (-)5.8 - dB RX Gain variation range By AGC △GRXA R6=110k IL=15mA ~ 70mA - (-)5.5 - dB Highest line current For maximum gain IHL(AGC) R6=110k 17 23 26 mA Lowest line current For minimum gain ILL(AGC) R6=110k 54 61 73 mA Mute input voltage KSI-W010-000 V 4 SL5021/P Test Circuit C3 4.7u R6 RVA(down) RVA(up) V i 16 15 14 SLPE AGC REG 13 12 Vcc MUTE 11 10 9 DTMF IR VEE SL5021 SL5021 SL5021P R1 620 LN GAS1 1 2 GAS2 QR GAR MIC- 4 5 6 3 R7 100u ILine 10~140mA V i C5 10U C5 10U C6 100p R9 20 600 68K C8 1n C9 10u 25K C2 V o C4 100p R4 100K Z L C7 1n MIC+ STAB 7 Rno 200 8 C10 10u R5 3.6K V i Application Circuit from dial and control circuits C5 100U 16 15 SLPE C5 C3 4.7u R6 AGC 100U 14 REG LN R10 13 BZX79C12 GAS1 1 R2 130K telephone line Vcc 12 MUTE 11 DTMF 10 IR 9 VEE SL5021 SL5021 SL5021P R1 620 R3 3.92K 13 R8 390 GAS2 2 C6 100p QR 3 4 R7 68K C4 5 100p R4 100K C8 1n Zbol GAR MIC6 MIC+ 7 STAB 8 R5 3.6K C2 KSI-W010-000 5 SL5021/P Typical Performance Characteristics V L N . Vcc V S LINE CURRENT 7 6 V LN 5 VOLTAGE (V) 4 Vcc 3 2 1 0 10 20 30 40 50 60 70 80 90 10 110 120 130 140 120 130 140 LINE CURRENT ( mA ) TRANSMIT GAIN V S LINE CURRENT 54 R6 = OPEN 52 GAIN (dB) 50 R6 = 140K R6 = 110K 48 R6 = 78K 46 44 42 40 10 20 30 40 50 60 70 80 90 10 110 LINE CURRENT ( mA ) RECEIVE GAIN V S LINE CURRENT 34 R6 = OPEN 32 GAIN (dB) 30 R6 = 140K 28 R6 = 78K R6 = 110K 26 24 22 20 10 20 30 40 50 60 70 80 90 10 110 120 130 140 LINE CURRENT ( mA ) KSI-W010-000 6