GMA7496L 2W+2W AMPLIFIER WITH DC VOLUME CONTROL Features Description The GMA7496L is a stereo 2W+2W class AB power amplifier assembled in the Powerdip 14+3+3 package, specially designed for high quality sound, TV and monitor applications. 2W+2W Output Power RL = 8Ω @THD = 10%, VCC = 14V Standby and Mute Functions Features of the GMA7496L include linear volume control, stand-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 & SOP- 20 Package Typical Application Circuit Varout_R GND 7 1, 2, 3, 13, 18, 19, 20 470nF 15, 16 Volume 9 INR VS OP-Amp 1000µF 14 OUTR 30K S1 ST-BY 11 STBY MUTE/STBY PROTECTIONS INL 60K Volume 4 GND 10K 1µF S2 MUTE +5V 17 OUTL 1000µF 30K GMA7496LV1.00 470nF 12 MUTE +5V OP-Amp SVR 10 6 Volume 5 Varout_L +5V 300K www.gammamicro.com.tw 1 GMA7496L 2W+2W AMPLIFIER WITH DC VOLUME CONTROL Marking Information and Pin Configurations (Top View) GND 1. 20. GND GND 2. 19. GND GND 3. 18. GND INL 4. GND 1 20. GND GND 2. 19. GND GND 3. 18. GND VAROUT_R 7. GMA7496L AYWW VOLUME 6. 16. VS VOLUME 6. VAROUT_R 7. 15. VS NC 8. 14. OUTR NC 8. 13. GND INR 9. 12. MUTE SVR 10. 11. STBY GMA7496L AYWW VAROUT_L 5. VAROUT_L 5. 17. OUTL INL 4. 17. OUTL 16. VS 15. VS 14. OUTR 13. GND INR 9. 12. MUTE SVR 10. 11. STBY A: Assembly/Test Site Code Y: Year WW: Week Ordering Information GMA7496LV1.00 Ordering Number 2 Package Shipping GMA7496LD20T DIP-20 22 Units/Tube GMA7496LS20T SO-20 38 Units/Tube GMA7496L 2W+2W AMPLIFIER WITH DC VOLUME CONTROL Absolute Maximum Ratings PARAMETER SYMBOL RATINGS UNITS DC Supply Voltage VS 26 V Maximum Input Voltage VIN 8 VPP Total Power Dissipation (TCASE = 60˚C) Ptot 6 W Operating Ambient Temperature TA 0 to 70 ℃ Storage Temperature Tstg - 40 to 150 ℃ Volume CTRL DC Voltage V6 7 V VESD 200 V SYMBOL RATINGS UNITS Rth i-pins 15 ˚C/W Rth i-amb(*) 50 ˚C/W ESD Capability, Machine Mode Thermal Data PARAMETER Thermal Resistance Junction-pins (max) Thermal Resistance Junction-Ambient (max) GMA7496LV1.00 (*) Mounted on PCB with no heatsink. 3 GMA7496L 2W+2W AMPLIFIER WITH DC VOLUME CONTROL Electrical Characteristics Refer to the test circuit: VS = 14V, RL = 8Ω, Rg = 50 Ω, TA = 25ºC Parameter Supply Voltage VS Total Quiescent Current IQ Output DC Offset Referred to SVR Potential VO Output Power PO Test Condition No Input Signal THD = 10%, RL = 8Ω Output Peak Current IPEAK (Internally Limited) Closed Loop Gain GV Monitor Out Gain GVLine Total Output Noise AMIN VOL 6.0 6.7 1.6 2 Unit 18 V 50 mA mV 8.0 0.4 0.7 V W 1.3 0.9 % A 2.8 VRMS Vol Ctrl > 4.5V 28.5 30 31.5 dB Vol Ctrl > 4.5V, Zload > 30KΩ -1.5 0 1.5 dB Vol Ctrl < 0.5V 80 BW eN Max 200 THD = 1%, RL = 8Ω GV = 30dB, PO = 1W, f = 1kHz VIN Typ 25 THD Input Signal Min 10 Total Harmonic Distortion Frequency Response dB 0.6 MHz f = 20Hz to 22KHz, Play Max Volume 500 800 f = 20Hz to 22KHz, Play Max Attenuation 100 250 f = 20Hz to 22KHz, Mute 60 150 µV Slew Rate SR 5 8 V/µS Input Resistance Ri 22.5 30 kΩ Variable Output Resistance RVar Out Variable Output Load Rload Var Supply voltage Rejection GMA7496LV1.00 DCVOS Quiescent Output Voltage Attenuation at Minimum Volume 4 Symbol SVR 30 2 f = 1kHz, Max Volume, CSVR = 470µF, VRIP = 1Vrms 35 f = 1kHz, Max Attenuation, CSVR = 470µF, VRIP = 1Vrms 55 100 Ω kΩ 39 dB 65 Thermal Muting TM 150 ºC Thermal Shut-down TS 160 ºC GMA7496L 2W+2W AMPLIFIER WITH DC VOLUME CONTROL Electrical Characteristics (continued) Refer to the test circuit: VS = 14V, RL = 80Ω, Rg = 50 Ω, TA = 25ºC Parameter Symbol Test Condition Min Typ Max Unit MUTE STAND-BY & INPUT SELECTION FUNCTIONS Stand-by ON Threshold VST ON Stand-by OFF Threshold VST OFF Mute ON Threshold VM ON Mute OFF Threshold VM OFF Quiescent Current @ Stand-by 3.5 1.5 V 3.5 IqST-BY Mute Attenuation V V 1.5 V 1 mA 0.6 AMUTE 50 Stand-by Bias Current IST-BYBIAS Mute Bias Current ImuteBIAS Stand by on VST-BY = 5V Play or Mute 65 dB 80 -20 µA -5 Mute 1 5 Play 0.2 2 µA Application Suggestions: The recommended values of the external components are those shown in the application circuit of figure 1. However, different values can be used from the following table of references for further helpr. Suggestion Value Purpose Larger than Suggestion Smaller than Suggestion 300K Volume control circuit Longer volume regulation time Shorter volume regulation time R2 10K Mute time constant Longer mute on/off time Shorter mute on/off time P1 50K Volume control circuit C1 1000µF Supply voltage bypass C2 470nF Input DC decoupling Lower low frequency cutoff Higher low frequency cutoff C3 470nF Input DC decoupling Lower low frequency cutoff Higher low frequency cutoff C4 470µF Ripple rejection Better SVR Worse SVR C5 100nF Volume control time constant Larger volume regulation time Smaller volume regulation time C6 1000µF Output DC decoupling Lower low frequency cutoff Higher low frequency cutoff C7 1µF Mute time constant Longer mute on/off time Shorter mute on/off time C8 1000µF Output DC decoupling Lower low frequency cutoff Higher low frequency cutoff C9 100nF Supply voltage bypass R1 Danger of oscillation Danger of oscillation GMA7496LV1.00 Component 5 GMA7496L 2W+2W AMPLIFIER WITH DC VOLUME CONTROL Application Circuit: Mute Stand-By Truth Table GMA7496LV1.00 MUTE H L H L 6 ST-BY H H L L OPERATING CONDITIO STANDBY STANDBY MUTE PLAY GMA7496L 2W+2W AMPLIFIER WITH DC VOLUME CONTROL A. USING MUTE AND STAND-BY FUNCTIONS B. USING ONLY THE MUTE FUNCTION To simplify the application, the stand-by pin can be connected directly to Ground. During the ON/OFF transitions is recommend to respect the following conditions. - At the turn-on, the transition mute-play must be made when the SVR pin is higher than 2.5V At the turn-off, the KGM7496L must be brought to mute from the play condition when the SVR pin is higher than 2.5V GMA7496LV1.00 Turn ON/OFF Sequences (for optimizing the POP performances) 7 GMA7496L 2W+2W AMPLIFIER WITH DC VOLUME CONTROL Typical Performance Characteristics: Quiescent current vs. Supply Voltage Output DC Voltage vs. Supply Voltage Vodc (V) 9.5 9 8.5 8 7.5 7 6.5 6 5.5 5 4.5 4 10 Vi = 0 11 12 13 14 15 16 GMA7496LV1.00 Supply Voltage (V) 8 Output DC Offset vs. Supply Voltage Output Power vs. Supply Voltage Distortion vs. Output Power Closed Loop gain vs. Frequency 17 18 GMA7496L 2W+2W AMPLIFIER WITH DC VOLUME CONTROL Typical Performance Characteristics (continuous): St-By Attenuation vs. Vpin 11 Mute Attenuation vs. Vpin 12 Pin Descriptions VS VS VS OUT L 30K 20K 6K 1K 6K 1K SVR 30K OUTR 100µA GMA7496LV1.00 20K 9 GMA7496L 2W+2W AMPLIFIER WITH DC VOLUME CONTROL Pin Descriptions (continued) PINS: INL, INR PINS: VAROUT-L, VAROUT-R VS VS 500µA 6K VAROUT IN 30K SVR PINS: VOLUME PINS: MUTE VS VS 10µA MUTE 200 10K VOL 50µA PINS: PW-GND, S-GND PINS: OUT L, OUT R OUT L VS GMA7496LV1.00 GND 10 PINS: STBY VS 10µA STBY 200 65K OUT R GMA7496L 2W+2W AMPLIFIER WITH DC VOLUME CONTROL Package Outline Dimensions – DIP 20 1.022 - 1.045 25.950 - 26.550 7.620 TYP 0.300 TYP 0.008 - 0.014 0.204 - 0.360 0.244 - 0.260 6.200 - 6.600 0.323 - 0.370 8.200 - 9.400 0.126 - 0.142 3.200 - 3.600 0.146 - 0.170 3.710 - 4.310 0.118 - 0.142 3.000 - 3.600 0.020 MIN .510 MIN 0.014 - 0.022 0.360 - 0.560 2.540 TYP 0.100 TYP GMA7496LV1.00 0.060 TYP 1.524 TYP Inches mm 11 GMA7496L 2W+2W AMPLIFIER WITH DC VOLUME CONTROL Ordering Number GMA 7496L D20 GMA7496LV1.00 APM Gamma Micro 12810 6 Circuit Type T Package Type Shipping Type D20: DIP-20 S20: SOP-20 T: Tube R: Tape & Reel