TPA6012A4PWPR

TPA6012A4 www.ti.com SLOS636 – OCTOBER 2009 3-W STEREO AUDIO POWER AMPLIFIER WITH ADVANCED DC VOLUME CONTROL Check for Samples :TPA6012A4 FEATURES 1 • 2 • • • • • DESCRIPTION Advanced 32 Steps DC Volume Control – Steps From –40 dB to 18 dB – Fade Mode – –85-dB Mute Mode 3 W Into 3-Ω Speakers Differential Inputs Headphone Mode Pin-to-Pin Compatible With TPA6011A4 and TPA6013A4 24-Pin PowerPAD™ Package (PWP) The TPA6012A4 is a stereo audio power amplifier that drives 3 W/channel of continuous RMS power into a 3-Ω load. Advanced dc volume control minimizes external components and allows BTL (speaker) volume control and SE (headphone) volume control. LCD monitors and notebook benefit from the integrated feature set that minimizes external components without sacrificing functionality. To simplify design, the speaker volume level is adjusted by applying a dc voltage to the VOLUME terminal. To ensure a smooth transition between active and shutdown modes, a fade mode ramps the volume up and down. APPLICATIONS • • • LCD Monitors Notebook PC All-in-One PC The 24-pin PowerPAD™ package (PWP) enchances thermal performance. APPLICATION CIRCUIT DC VOLUME CONTROL GAIN (BTL) vs VOLUME VOLTAGE Right Speaker 1 ROUT+ PGND SE/BTL 2 23 Right Positive C Differential i Input Signal 0.47 mF 5 Right Negative C Differential i Input Signal 0.47 mF 6 RIN+ VOLUME RIN– AGND BYPASS 8 Left Positive C 0.47 mF Differential i Input Signal VDD 9 0.47 mF 21 −10 In From DAC or Potentiometer (DC Voltage) −20 18 C(BYP) 0.47 mF FADE 16 15 1 kW System Control LIN+ NC 11 12 PVDD LOUT− LOUT+ PGND −40 −60 −70 LIN– SHUTDOWN −30 −50 17 Headphones 0.47 mF 0.47 mF 0 1 kW PVDD VDD Volume Up Volume Down 10 VDD 7 Power Supply 20 100 kW 3 Left Negative C Differential i Input Signal CO 330 mF ROUT− 0.47 mF Power Supply 100 kW Gain − dB CS 10 mF VDD 24 −90 CO 330 mF 0.0 4, 10, 19, 20, 22 14 13 VDD = 5.0 V BTL Output RL = No Load −80 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 Volume [Pin 21] − V Left Speaker S001 Figure 1. Application Circuit and DC Volume Control 1 2 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PowerPAD is a trademark of Texas Instruments. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2009, Texas Instruments Incorporated TPA6012A4 SLOS636 – OCTOBER 2009 www.ti.com This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. AVAILABLE OPTIONS PACKAGE TA 24-PIN TSSOP (PWP) –40°C to 85°C TPA6012A4PWP ABSOLUTE MAXIMUM RATINGS over operating free-air temperature range (unless otherwise noted) (1) UNIT VSS Supply voltage, VDD, PVDD –0.3 V to 6 V VI Input voltage, RIN+, RIN–, LIN+,LIN– –0.3 V to VDD+0.3 V Continuous total power dissipation See Dissipation Rating Table TA Operating free-air temperature range –40°C to 85°C TJ Operating junction temperature range –40°C to 150°C Tstg Storage temperature range –65°C to 85°C (1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. DISSIPATION RATING TABLE (1) (1) 2 PACKAGE TA = 25°C POWER RATING DERATING FACTOR ABOVE TA = 25°C TA = 70°C POWER RATING TA = 85°C POWER RATING PWP 2.7 mW 21.8 mW/°C 1.7 W 1.4 W All characterization is done using an external heatsink with θSA= 25°C/W. The resulting derating factor is 22.2 mW/°C. Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s) :TPA6012A4 TPA6012A4 www.ti.com SLOS636 – OCTOBER 2009 RECOMMENDED OPERATING CONDITIONS VSS MIN MAX 4 5.5 Supply voltage, VDD, PVDD VIH High-level input voltage VIL Low-level input voltage TA Operating free-air temperature SE/BTL, FADE UNIT V 0.8 x VDD V 2 V SHUTDOWN SE/BTL, FADE 0.6 x VDD SHUTDOWN V 0.8 V 85 °C TYP MAX UNIT –40 ELECTRICAL CHARACTERISTICS TA = 25°C, VDD = PVDD = 5.5 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN 2 30 mV VDD = 5.5 V, Gain = 18 dB, SE/BTL = 0 V 2.6 50 mV Power supply rejection ratio VDD = PVDD = 4 V to 5.5 V, Gain = 0 dB –80 | IIH | High-level input current (SE/BTL, FADE, SHUTDOWN, VOLUME) VDD = PVDD = 5.5 V, VI = VDD = PVDD 1 µA | IIL | Low-level input current (SE/BTL, FADE, SHUTDOWN, VOLUME) VDD = PVDD = 5 V, VI = 0 V 1 µA | VOO | Output offset voltage (measured differentially) PSRR IDD Supply current, no load VDD = 5.5 V, Gain = 0 dB, SE/BTL = 0 V dB VDD = PVDD = 5 V, SE/BTL = 0 V, SHUTDOWN = 2 V 6.7 9 VDD = PVDD = 5 V, SE/BTL = 5 V, SHUTDOWN = 2 V 4.5 6 mA IDD Supply current, max power into a 3-Ω load VDD = 5 V = PVDD, SE/BTL = 0 V, SHUTDOWN = 2 V, RL = 3 Ω, PO = 2 W, stereo 1.5 IDD(SD) Supply current, shutdown mode SHUTDOWN = 0 V 10 ARMS 25 µA OPERATING CHARACTERISTICS TA = 25°C, VDD = PVDD = 5 V, RL = 3 Ω, Gain = 6 dB, Stereo (unless otherwise noted) PARAMETER PO THD+N Output power Total harmonic distortion + noise TEST CONDITIONS MIN TYP MAX UNIT THD = 1%, f = 1 kHz, RL = 16 Ω (SE) 195 mW THD = 10%, f = 1 kHz, RL = 16 Ω (SE) 235 mW THD = 1%, f = 1 kHz, RL = 3 Ω (BTL) 2.0 THD = 10%, f = 1 kHz, VDD = 5.5 V, RL =3 Ω (BTL) 3.2 PO = 0.9 W, RL = 8 Ω (BTL), f = 20 Hz to 20 kHz