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| MICROELECTRONICS A A Power Management GMA7496L 2W+2W AMPLIFIER WITH DC VOLUME CONTROL Features 2W+2W Output Power RL = 8W @THD = 10% VCC = 14V St-by and Mute Functions Low Turn- on Turn-off POP Noise Linear Volume Control DC Coupled With Power Op- amp. No Boucherot Cell No St-by RC Input Network Single Supply Ranging up to 15V Short Circuit Protection Thermal Overload Protection Internally Fixed Gain Soft Clipping Variable Output After Volume Control Circuit DIP- 20 Package Description The GMA7496L is a stereo 2W+2W class AB power amplifier assembled in the @ DIP- 20 package, specially designed for high quality sound, TV and Monitor applications. Features of the GMA7496L include linear volume control, Stand-by and mute functions. TYPIC APPLICATION CIRCUITS Varout_R GND 7 1,2,3,13, 18,19,20 9 470nF 30K Volume VS 15,16 OP- amp + - INR 14 1000F OUTR S1 ST-BY 11 STBY MUTE/STBY PROTECTIONS Volume INL 470nF SVR 10 470F Volume 6 5 Varout_L +5V 4 30K + OP- amp 60K 17 OUTL 1000F 10K 12 MUTE 1F S2 MUTE +5V S_GND 100nF 300K www.gammamicro.com PRELIMINARY GMA7496L V0.1 1 +5V MICROELECTRONICS A A Power Management GMA7496L 2W+2W AMPLIFIER WITH DC VOLUME CONTROL MARKING INFORMATION & PIN CONFIGURATIONS (TOP VIEW) DIP-20 VS OUTL GND GND GND 20 19 18 17 16 15 14 13 12 11 VS OUTR GND MUTE STBY GMA7496L 1 2 3 4 5 6 7 8 9 10 GND GND GND INL VAROUT_L SVR INR N.C. VAROUT_R VOLUME ORDERING INFORMATION ORDERING NUMBER GMA7496LD20 PACKAGE DIP-20 SHIPPING 22 Units/ Tube * For detail Ordering Number identification, please see last page. GMA7496L 2 MICROELECTRONICS A A Power Management GMA7496L 2W+2W AMPLIFIER WITH DC VOLUME CONTROL ABSOLUTE MAXIMUM RATINGS Parameter DC Supply Voltage Maximum Input Voltage Total Power Dissipation (Tcase= 60C) Ambient Operating Temperature Storage and Junction Temperature Volume CTRL DC Voltage Symbol VS VIN Ptot Tamp Tstg, Tj V6 Value 26 8 6 0 to 70 -40 to 150 7 Unit V Vpp W C C V THERMAL DATA Parameter Thermal Resistance Junction-pins (max.) Thermal Resistance Junction-ambient (max.) (*) Mounted on PCB with no hestsink Symbol Rth j-pins Rth j-amb(*) Value 15 50 Unit C/ W C/W GMA7496L 3 MICROELECTRONICS A A Power Management GMA7496L 2W+2W AMPLIFIER WITH DC VOLUME CONTROL SYMBOL VS IQ DCVOS VO PO THD Ipeak VIN GV GVLine Amin VOL BW f= 20Hz to 22kHz Play, max volume Vol Ctrl > 4.5V Vol Ctrl > 4.5V; Zload > 30KW Vol Ctrl < 0.5V 28.5 -1.5 80 0.6 500 100 60 5 22.5 8 30 30 2 f= 1kHz; max volume CSVR= 470F; VRIP= 1Vrms f= 1kHz; max attenuation CSVR= 470F; VRIP= 1Vrms 35 55 39 65 150 160 100 800 250 150 30 0 THD= 10%; RL= 8W THD= 1%; RL= 8W GV= 30dB; PO=1W; f= 1kHz (Internally Limited) 0.7 0.9 2.8 31.5 1.5 1.6 No Input Signal ELECTRICAL CHARACTERISTICS ( Refer to the test circuit VS = 14V; RL = 8W, Rg = 50W, Tamb = 25C). Parameter Supply Voltage Range Total Quiescent Current Output DC Offset Referred to SVR Potential Quiescent Output Voltage Output Power Total Harmonic Distortion Output Peak Current Input Signal Closed Loop Gain Monitor Out Gain Attenuation at Minimum Volume TEST CONDITIONS Min 10 Typ Max 18 Unit V mA mV V W W 25 200 7 2 1.3 50 0.4 % A Vrms dB dB dB Mhz V V V V/ s KW W KW dB dB C C Total Output Noise eN f= 20Hz to 22kHz Play, max attenuation f= 20Hz to 22kHz Mute Slew Rate Input Resistance Variable Output Resistance Variable Output Load SR Ri Rvar out Rload var out Supply Voltage Rejection SVR Thermal Muting Thermal Shut-Down TM TS MUTE STAND- BY & INPUT SELECTION FUNCTIONS Stand- by ON Threshold VST ON VST OFF VM ON VM OFF IQST-BY AMUTE IstbyBIAS Stand by on VST-BY= 5V VMUTE= 5V Play or Mute ImuteBIAS Mute Play -20 50 0.6 65 80 -5 1 0.2 5 2 3.5 1.5 1 3.5 1.5 V V V V mA dB A A A A GMA7496L 4 Stand- by OFF Threshold Mute ON Threshold Mute OFF Threshold Quiescent Current @ Stand- by Mute Attenuation Stand- by Bias Current Mute Attenuation Mute Bias Current MICROELECTRONICS A A Power Management GMA7496L 2W+2W AMPLIFIER WITH DC VOLUME CONTROL DIP- 20 PACKAGE OUTLINE DIMENSIONS 0.010 NOM 0.254 NOM 0~15 0.252 0.005 6.401 0.127 1 0.300 0.010 7.620 0.254 0.355 0.020 9.017 0.508 1.026 0.005 26.060 0.127 0.170 MAX. 4.318 MAX. 0.130 0.010 3.302 0.254 0.018 TYP. 0.457 TYP. 0.100 TYP. 2.540 TYP. 0.130 0.005 3.302 0.127 0.015 MIN 0.381 MIN 0.060 TYP. 1.524 TYP. Inches ( mm ) ORDERING NUMBER GMA 7496L D20 T Gamma Micro. Shipping T: Tube GMA7496L Circuit Type Package D20: DIP-20 10 |
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