SL1027P Semiconductor DUAL PREAMPLIFIER WITH ALC Description • The SL1027P is a monolithic integrated circuit consisting of two independent preamplifier with two built-in ALC, and it has quick stabilization during power supply input. Features • • • • • • • High voltage gain Excellent channel separation Low noise Direct motor drive obtained through SEPP output stage. Good ALC channel balance Operating supply voltage range : VCC = 5V ~13V Load resistance : RL > 680Ω Application • Stereo radio cassettes Ordering Information Type NO. SL1027P Marking Package Code SL1027 DIP14 Outline Dimensions unit : mm KSI-W021-001 1 SL1027P Absolute Maximum Ratings (Ta = 25°C) Characteristics Symbol Rating Unit Supply Voltage Vcc 14 V Power Dissipation PD 600 mW Operating Temperature Topr - 25 ~ + 75 ℃ Storage Temperature Tstg - 40 ~ + 125 ℃ Electrical Characteristics (Unless otherwise specified, Ta=25℃ , VCC=5V, f=1KHz, RL = 10KΩ (PLAY), RL = 680Ω (REC)) Characteristics Symbol Test Condition Min. Typ. Max. Unit Quiescent Supply Current ICCQ - - 4.5 10 mA Open-loop Voltage Gain GVO - - 85 - dB Closed-loop Voltage Gain GV PLAY - 40 - dB REC - 58 - dB Maximum Output Voltage VOM THD = 1%, PLAY 0.9 1.2 - V Total Harmonic Distortion THD VO = 0.5V, PLAY - 0.1 1 % Input Resistance RIN - 21 30 - KΩ Equivalent Input Noise Voltage VNI B.P.F = 20Hz ~ 20KHz Rg = 2.2㏀, PLAY - 1 2 uV 40 50 - dB Channel Separation CHSEP Rg=2.2㏀ VO= 0dBm,PLAY ALC Channel Balance ACB VIN=-20dBm,REC. - 0 2 dB ALC Width AW VIN=-60dBm,REC. 35 45 - dB ALC Distortion AD VIN=-20dBm,REC. - 0.5 2 % KSI-W021-001 2 SL1027P Block Diagram V CC A MP 2 Ou tpu t 14 13 NF 2 & A MP 2 (-)I n p u t NULL 12 A MP 2 (+)I n p u t 11 In pu t Bi a s V oltage A LC 2 Ou tpu t 10 9 8 A MP 2 A LC2 + Bi a s Cir c u i t + A LC1 A MP 1 1 2 G ND 3 A MP 1 O u tpu t 4 NF 1 & A MP 1 (-)I n p u t NULL 5 6 7 A MP 1 (+)I n p u t A LC1 Ou tpu t A LC In pu t Test Circuit 10K1 20~20KHz B.P . SW6 14 A V c c (5V ) 13 12 2.2K S W 1.2 1 2 + 47u F 11 + 220u F 10 9 8 5 6 7 SL1027 SL1027P 1 C SW2 + 220u F 20~20KHz B.P . SW6 + 470u F 680 56 S W 3 0.033u F 4.7K 10u F + 51K 22u F+ SW4 b C 2 + 10u F b SW4 1 10K 2 3 51K 4.7K 0.033u F 2 4 22u F 56 680 S W 5 680 4.7u F + + S W 5 680 4.7u F KSI-W021-001 + + 4.7u F SW2 + 470u F + 4.7u F 2.2K 1 S W 1.1 SG 2 300K 3 SL1027P Test Method MeasureSwitch Position Symment bol SW 1 SW 2 SW 3 SW 4 SW 5 SW 6 Location ICCQ GVO GV 2 1 1 OFF ON OFF OFF OFF ON 1 1 1 OFF OFF OFF OFF OFF OFF a, b a, b VOM 1 OFF ON 1 OFF OFF b THD 1 OFF ON 1 OFF OFF b CHSEP SW1-1 1→2 SW1-2 2→1 OFF ON 1 OFF OFF b VNI 2 OFF ON 1 OFF ON c AW 1 OFF OFF 2 ON OFF b ACB 1 OFF OFF 2 ON OFF b AD 1 OFF OFF 2 ON OFF b Test Method Read ammeter GVO = 20log(VO / VIN ) [dB] GV = 20log(VO / VIN ) [dB] Measure output voltage(VO) at THD=1% Measure distortion factor at VO=0.5V Measure crosstalk of amp 1,2 at output voltage VO = 0dBm Convert output noise voltage at 1KHz gain when Rg = 2.2KΩ Input voltage range from when input voltage VIN =-60dBm until output voltage VO goes up 3dB Output voltage VO level difference of amp 1,2 when input voltage VIN = -20dBm is applied. Measure distortion factor when input voltage VIN = -20dBm is applied. Information of Operating 1. ALC Circuit The ALC circuit is consist of Q1, Q2 and some external components. The output level of amplifier is rectified by external circuits and this rectified DC level is applied to the ALC input terminal(Pin 7). S ignal In pu t V cc + 5 6 7 + Q1 A MP Q2 2 1 4 + + KSI-W021-001 4 SL1027P 2. Closed-loop Gain (f=1kHz) Z1 • Closed loop voltage gain 2 4 GV=20log(Z1/Z3) (dB) • Playback amplifier gain Z2 + R1 + C1 GV=20log(R1/R3) (dB) 10u F Z3 in low frequency R2 R3 GV=20log(Z1/Z3) (dB) C2 RL in high frequency • Recording amplifier gian GV=20log(R1/R3) (dB) 3. Oscillation When the closed-loop gain of amplifier is lowered, oscillation with occur. So the circuit should be compensated by connecting of 10pF between pin 3 and pin 2, and 0.03 ㎌ in series with 10Ω to the load end. 10p F 3 10u F + 5 + 2 A MP 10u F + 51 4 1000p F 20u F + 0.033uF S ignal In pu t 0.033u F 56 KSI-W021-001 47K 10 RL 5 SL1027P Typical Performance Characteristics G VO - f GV - f 100 (dB) Gv 80 80 F LA T 60 Voltage Gain G 60 40 V c c =5V R L =10K C N F =470u F 20 2 3 5 100 2 3 5 1K 2 3 5 10K 2 3 5 NA B 40 20 V c c =5V R g =600 0 2 3 5 100 2 3 5 1K 100K F r e q u e n c y f (Hz ) I C C Q -V c c T HD,G v o -V c c 8 6 60 40 680 T HD 2 R L =10K (mA) (dB) CCQ Quiescent Current I f =1KHz V o =0d B C N F =470u F 10 8 6 4 2 0 0 2 4 6 8 10 12 S u p p l y V o l t a g e V c c (V ) R g =0 R L =10K 12 VO Total Harmonic Distortion THD (%) 80 680 Voltage Gain G Gvo 4 14 100 R L =10K 10 2 3 5 10K 2 3 5 100K F r e q u e n c y f (Hz ) 14 0 2 4 6 8 10 12 14 S u p p l y V o l t a g e V c c (V ) A D,V o -V T HD-V o IN 2 5 V c c =5V R L =10K G v =40d B/1KHz f =1KHz R L =680 7 5 3 100Hz 2 10KHz Vo V c c =4V 1KHz 2 3 5 7 1.0 2 3 7 5 3 3 2 1.0 2 0.1 V c c =4V 7 5 5V 5 7 2 1.0 6V 7 0.1 0.1 3 5V ALC Distortion AD(%) Total Harmonic Distortion THD (%) 1.0 5 16 6V 3 2 -80 -70 -60 O u t p u t V o l t a g e V o (V ) -50 -40 In pu t V ol t a ge V KSI-W021-001 ALC Output Vo(V) Voltage Gain G V VO (dB) 100 -30 -20 I N (V -10 ) 6 + 1uF + 13 2 14 1 KSI-W021-001 Meter + 3.3K 680 3 + 4.7uF 56 4 4.7K 4.7uF 1000pF 47uF 300K 5 0.033uF 22uF 10 10uF 6 51K 220uF 9 SP 10K 4.7uF 7 R 12 DBL1027 SL1027P SL1027 56 1000pF 8 PWR (L) AMP 22uF + P 51K 11 100uF 200 Vcc 10uF 4.7K + Tuner(L) R 0.033uF 4.7uF + Tuner(R) PWR (R) AMP P 680 + SP 10K 3.3K R R Bias OSC P 2.2K P 2.2K Head MIC Head MIC SL1027P Application Circuit + + + + 7 SL1027P These AUK products are intended for usage in general electronic equipments(Office and communication equipment, measuring equipment, domestic electrification, etc.). Please make sure that you consult with us before you use these AUK products in equipments which require high quality and/or reliability, and in equipments which could have major impact to the welfare of human life(atomic energy control, airplane, spaceship, traffic signal, combustion central, all types of safety device, etc.). AUK cannot accept liability to any damage which may occur in case these AUK products were used in the mentioned equipments without prior consultation with AUK. KSI-W021-001 8