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| UTC2025 S w w a D STEREO AUDIO AMPLIFIER . w DESCRIPTION The UTC2025 is a monolithic integrated audio amplifier in a 16-pin plastic dual in line package. It is designed for portable cassette players and radios. ta ee h 4U t om .c LI NEAR I NTEGRATED CI RCUI T FEATURES *Working Voltage down to 3V *Few External components *High Channel isolation *Voltage gain up to 45dB(Adjustable with external resistor) *Soft clipping *Internal Thermal protection BLOCK DIAGRAM 9 10 11 50 THERMAL PROTECT 12 START CIRCUIT 8 7 ABSOLUTE MAXIMUM RATINGS Characteristic Symbol VS IO Tj Tstg Supply Voltage Output Peak Current Junction Temperature Storage Temperature w w w t a .D 50 S a 5 e h 13 10k U t4 e 14 15 5k 50 .c m o DIP-16 DECOUPLING 16 1 10k 6 4 3 2 Value 15 1.5 150 -40+150 Unit V A YOUW ANG ELECTRONI CO. CS LTD w w w .D a aS t ee h 1 4U t om .c UTC2025 ELECTRICAL CHARACTERISTICS LI NEAR I NTEGRATED CI RCUI T (Tamb=25,VCC=9V,Stereo,Unless otherwise specified) Parameter Symbol Test conditions Supply Voltage Quiescent Current Quiescent output voltage Voltage gain Voltage gain difference Input impedance VS IQ VO AV AV Ri f=1kHz;d=10% Stereo per channel VCC=9V;RL=4 RL=8 VCC=6V;RL=4 RL=8 VCC=3V;RL=4 Bridge VCC=9V;RL=8 VCC=6V;RL=4 VCC=9V;RL=4 f=1kHz;PO=250mW Stereo Bridge RG=0;AV=45dB Vripple=150mVRMS Fripple=100Hz AV=200 Bandwidth: 20Hz to 20kHz RG=0 RG=10k RG=10k; f=1kHz;RL=4 PO=1W Min 3 Typ 40 4.5 45 51 30 Max 12 50 47 53 1 Unit V mA V dB dB k Stereo Bridge 43 49 1.7 0.7 Output Power PO 2.3 1.3 1 0.6 0.1 4.7 2.8 W Distortion d 40 0.3 0.5 46 1.5 - % Supply voltage Rejection SVR dB Input noise Voltage Vn Cross-Talk C.T. 40 1.5 3 55 3 6 - V dB THERMAL RESISTANCE Rth(j-c):Junction to case thermal resistance 15 /W Rth(j-a):Junction to ambient thermal resistance 60 /w YOUW ANG ELECTRONI CO. CS LTD 2 UTC2025 PIN CONNECTION LI NEAR I NTEGRATED CI RCUI T FEEDBAC BOOT.1 GND (sub SVR Vcc=6V RL=8 Vcc=6V RL=40 0.4 16 15 14 13 12 11 10 7 0.2 IN.1 (+) IN.2 (+) OUT.1 GND GND +Vs 1 2 3 4 5 6 TYPICAL PERFORMANCE CHARACTERISTICS d(%) 10 Distortion versus output power EEDBACK BRIDGE OUT.2 BOOT.2 GND GND d(%) 1 Distortion versus output power 1 0.1 0 0.2 0.4 0.6 0.8 1.0 1.2 P0(W) 8 9 0 0.6 0.8 1.0 1.2 P0(W) Distortion versus output Frequency 10 8 Output power/versus supply voltage d(%) Po(W) 6 Vcc=9V RL=9 Po=1.5W 1 4 f=1kHz d=10% RL=4 2 0.1 10 0 100 1k 10k f(Hz) 100k 0 4 8 12 Vcc(V) YOUW ANG ELECTRONI CO. CS LTD 3 UTC2025 APPLICATION CIRCUITS Vcc 100F 100F 10 16 14 15 0.15F LI NEAR I NTEGRATED CI RCUI T Vcc 100F 100F 10 16 14 15 0.15F 470F OUT1 0.22F 0.22F Vin 100F 11 Vin 1 100F 11 RL 7 100F 5 100F 1 8 100F 4,5,9,12,13 3 2 0.15F RL 0.22F 7 100F 3 470F 0.15F OUT2 Vin 2 100F 5 2 RL 8 100F 4,5,9,12,13 Fig. 5 Bridge Application Fig.6 Stereo Application SCHEMATIC DIAGRAM 8 7 I2+ 6 I2+Vs 16 3 OUT 2 2 GND 9 4 5 I1+ 10 11 I114 OUT 1 15 12 1 13 YOUW ANG ELECTRONI CO. CS LTD 4 |
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