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| Semiconductor SL5020/P LOW VOLTAGE COMPANDER Description The SL5020 contains two variable gain circuits configured for compressing and expanding the dynamic range of an audio signal. One circuit is configured as an expander, while the other circuit can be configured as a compressor or expander. Each circuit has a full wave rectifier to provide average value information to a variable gain cell located in either the input stage or the feedback path. An internal temperature stable bandgap reference provides the necessary precision voltages and currents required. It contains also compressor and expander mute circuit. Features * Low voltage operation Vopr = 1.8 ~ 5.0V * Decreasing external components * Built in compressor and expander mute circuit * Unity gain level set a 100mVrms * Response time adjustable Ordering Information Type NO. SL5020 SL5020P Marking SL5020 SL5020 Package Code SOP14 DIP14 Outline Dimensions SOP14 DIP14 unit : mm KSI-W006-000 1 SL5020/P Maximum Ratings(Ta = 25C) Characteristics Maximum Supply Voltage Power Dissipation Storage Temperature Range Symbol VCC PD Tstg Rating 10 410 -55 ~ 150 E Unit V mW Operating Conditions * Operating Supply Voltage : 1.8 ~ 5.0V * Operating Temperature Range : -20 ~ 70E * Input frequency Range : 100Hz ~ 20kHz * Input Voltage : Compressor Input = 700mVrms ( Vcc=3V) Expander Input = 316mVrms Block Diagram CO M.F /B 8 CO M .F I L 2 1 CO M.I N 0 1 C O M.CF 9 CO M.M UT E 31 CO M.O UT 1 M UT E R ECT G A IN + V cc 41 + VB V RE F 1 BI A S VB 6 G A IN + 7 R ECT VB M UT E 5 E X P .I N 3 EX P .F I L 2 4 EX P .O UT E X P .M UT E + G ND KSI-W006-000 2 PIN Voltage and Description Pin No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 SL5020/P Description Name VREF EXP.MUTE EXP.FILTER EXP.OUTPUT EXP.INPUT VB GND COM.FEEDBACK COM.CF COM.INPUT COM.OUTPUT COM.FILTER COM.MUTE Vcc Voltage (V) 1.3 1.4 Bandgap Voltage Expander mute adjust. Expander Filter. connect to an external capacitor to filter the full 0 ~ 0.6 wave rectifier's output. This capacitor affects attack & delay times, as well as low frequency accuracy. 1.5 1.5 2.2 GND 1.5 1.5 1.5 1.5 Output of the expander amplifier Expander input. Nominally signal range is 3.16mVrms to 316mVrms. Must be capacitor coupled to the signal source An internal reference voltage. This is an AC ground, and must be well filtered to obtain high power supply rejection and low crosstalk. Ground Input to the compressor Variable gain stage and rectifier. Normally, this is connected to the compressor's output through filtered DC feedback path. Compressor input, Normally. Signal range is 100uVrms to 1.0Vrms. Must be capacitor coupled to the signal source Output of the compressor amplifier. Compressor filter. Connect to an external capacitor to filter the full 0~0.6 wave rectifier's output. This Capacitor affects attack & decay times, and low frequency accuracy 1.4 3 Compressor mute adjust. Power supply pin. Connect to power supply providing between 1.8 and 5.0 V Electrical Characteristics (Unless Otherwise Specified, Ta=25 C , Vcc=3V, f=1kHz) Characteristics Supply current Compressor Section 0 dB Gain Gain Error (Note 1) Distortion Noise Output Ripple Rejection Ratio GC0 GC1 GC2 GC3 GC4 THDc Vnoc RRc Vinc= 100mVrms, 0dB Vinc= Vinc= Vinc= Vinc= 316mVrms, 10dB 10mVrms, -20dB 1mVrms, -40dB 100uVrms, -60dB Symbol Icc Test Conditions No Signal Min. - Typ. 3.1 Max. - Unit mA -1.5 -1 -1 -1 -1 0 0 0 0 0 0.3 1.5 1 1 1 1 1.5 5.0 -18 dB dB dB dB dB % mVrms dB Vinc=100mVrms, f=1kHz Rg = 600U Vcc = 1kHz, 3V(DC), 100mVrms - 0.8 -25 KSI-W006-000 3 Electrical Characteristics(continued) (Unless Otherwise Specified, Ta=25 C , Vcc=3V, f=1kHz) Characteristics Crosstalk(Cae E) SL5020/P Min. - Symbol CTc Attc Rinc Test Conditions Vinc=100mVrms. Exp Output Vinc=100mVrms. Vpin13=GND PIN 10 Typ. -72 -65 20 Max. -50 -50 - Unit dB dB kU Muting Attenuation Input Impedance Expander Section 0 dB Gain Ge0 Ge1 Ge2 Ge3 Ge4 THDe Vnoe RRe CTe Atte Rine Vine=100mVrms 0dB Vine=178mVrms 5dB Vine=31.6mVrms -10dB Vine=10mVrms -20dB Vine=3.16mVrms -30dB Vine=100mVrms f=1kHz Rg = 600U Vcc=1kHz, 3V(DC), 100mVrms Vine=100mVrms, Com Output Vine=316mVrms, Vpin2=GND PIN4 -1.5 -1 -1 -1 -1 0 0 0 0 0 0.4 0.06 -58 -34 -70 4.3 1.5 1 1 1 1 1.5 5.0 -38 -24 -50 dB dB dB dB dB % mVrms dB dB dB kU Gain Error (Note 1) Distortion Noise Output Ripple Rejection Ratio Crosstalk(Eae C) Muting Attenuation Input Impedance (Note 1) Gain Error=(VOUT - 20dB) -VIN x K K : Compressor Expander = 2 = 0.5 KSI-W006-000 4 Test Circuit V cc C O M .O UT V inc SL5020/P 10K 10u + SW1 + 41 31 M UT E CO M. EX P M UT E 1 2 + SW2 3 2.2 + 2 1 2.2 + 1 + 1 + 1 0 + 1 1 CO M .O UT 0 1 CO M .I N EX P IN 5 6 9 8 EX P O UT 4 7 + 1 0 1 + 1 E X P . O UT V ine Application Circuit V cc CO M .M UT E CO M .O UT CO M .I N 1 0 + + 0.1 + 31 2 1 2.2 + 10K 1 + 1 + 1 0 + 1 41 1 0 1 9 8 M UT E + VB G A IN R E CT M UT E + V R EF VB G A IN R E CT VB 1 2 + 3 2.2 + 4 1 + 10K 5 4 .7 6 G ND 7 + 1 0 a E X P . MUT E EX P . O UT E X P .I N KSI-W006-000 5 SL5020/P Typical Performance Characteristics V cc - V ref V c c - Ic c 6 5 4 Vref (V) 1 2 3 4 5 6 7 8 0 1 2 3 4 5 6 7 V c c (V ) 3 Icc (mA) 2 1 0.2 0 1.6 1.4 1.2 1.0 0.8 0.6 0.4 V c c (V ) V c c - V o u t (E x p a n d e r ) -18 -19 V c c - V o u t (Co p r e s s o r ) m -19 Vout (dBV) Vout (dBV) -20 -20 -21 -21 0 1 2 3 4 5 6 7 V c c (V ) -22 0 1 2 3 V c c (V ) 4 5 6 7 KSI-W006-000 6 SL5020/P Typical Performance Characteristics(continued) V i n - V o u t (C o mp r e s s o r ) 10 40 CB=1 0 0u P .S .R .R (C o mp r e s s o r ) 30 0 Rej ecti o n (d B ) 20 V o ut (mV ) -10 CB=4 7 u 10 CB=1 0 u CB=4 .7u 0 -20 -30 -10 -6 0 -4 0 -20 V i n (d B) 0 20 10 100 1K 10K F r e q u e n c y (H z ) 1 0 0K F i n - V o u t (C o mp r e s s o r ) V i n =1 0 0mV r ms 0 V i n =1 0 mV r ms V o ut (d B ) -1 0 V i n =1 mV r ms -2 0 V i n =1 0 0u V r ms -3 0 -4 0 0.2 100 1K 10K F r e q u e n c y (H z ) 20K1 0 0K 0 -70 -60 TH D (% ) 1 .4 1 .2 1 .0 0.8 0.6 0.4 V - T H D (C o mp r e s s o r ) -5 0 -40 -3 0 -20 -1 0 V i n (d BV ) 0 KSI-W006-000 7 SL5020/P Typical Performance Characteristics(continued) V i n - V o u t (Ex p a n d e r ) 20 P .S .R .R (Ex p a n d e r ) 70 CB=1 0 0u 60 0 50 CB=4 7 u 40 CB=1 0 u 30 CB=4 .7u -60 -30 -20 -10 V i n (d B) 0 10 20 10 100 1K 10K F r e q u e n c y (H z ) 1 0 0K Vout (mV) -20 -40 F i n - V o u t (Ex p a n d e r ) V i n =1 0 0mV r ms 0 -20 Vout (dB) V i n =1 0 mV r ms -40 THD (%) -60 -80 0.2 100 1K 10K F r e q u e n c y (H z ) 20K0 0K 1 0 -40 -35 - 3 0- 2 5 V i n =3 .16mV r ms 1 .0 0.8 0.6 0.4 1 .4 1 .2 Rejection (dB) V i n - T H D (Ex p a n d e r ) -20 - 1 5- 1 0 V i n (d BV ) -5 0 KSI-W006-000 8 |
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