TPA6021A4NG4

TPA6021A4 www.ti.com SLOS465 – JUNE 2005 2-W STEREO AUDIO POWER AMPLIFIER WITH ADVANCED DC VOLUME CONTROL FEATURES • • • • • DESCRIPTION 2 W Into 4-Ω Speakers With External Heatsink DC Volume Control With 2-dB Steps from -40 dB to 20 dB – Fade Mode – -85-dB Mute Mode Differential Inputs 1-µA Shutdown Current (Typical) Headphone Mode The TPA6021A4 is a stereo audio power amplifier that drives 2 W/channel of continuous RMS power into a 4-Ω load when utilizing a heat sink. Advanced dc volume control minimizes external components and allows BTL (speaker) volume control and SE (headphone) volume control. The 20-pin DIP package allows for the use of a heatsink which provides higher output power. To ensure a smooth transition between active and shutdown modes, a fade mode ramps the volume up and down. APPLICATIONS • LCD Monitors Right Speaker ROUT+ 1 PGND SE/BTL 2 Right Positive Differential Input Signal Right Negative Differential Input Signal 20 100 kW 10 ROUT1 kW 0.47 mF 4 Ci 0.47 mF 5 RIN+ RIN- VOLUME AGND In From DAC or Potentiometer (DC Voltage) 17 VDD VDD BYPASS LIN- FADE 16 Ci Left Positive Differential Input Signal Ci 0.47 mF Headphones 8 LIN+ 1 kW SHUTDOWN NC 9 10 0.47 mF -70 15 14 VDD Power Supply -40 -80 7 CO 0.47 mF -30 -60 0.47 mF 0.47 mF Left Negative Differential Input Signal -20 -50 C(BYP) 6 -10 PVDD 18 Ci BTL Volume 0 100 kW 3 Power Supply CO 330 mF 19 0.47 mF 10 mF DC VOLUME CONTROL 30 Volume - dB CS VDD 20 PVDD LOUT- LOUT+ PGND System Control -90 0 330 mF 0.5 1 1.5 2 2.5 3 3.5 Volume [Pin 18] - V 4 4.5 5 13 12 11 Left Speaker 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. 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 © 2005, Texas Instruments Incorporated TPA6021A4 www.ti.com SLOS465 – JUNE 2005 These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. AVAILABLE OPTIONS PACKAGE TA 20-PIN PDIP (N) –40°C to 85°C TPA6021A4N 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 Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds (1) 260°C 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 N 1.8 W 14.5 mW/°C 1.16 W 0.94 W All characterization is done using an external heatsink with θSA= 25°C/W. The resulting derating factor is 22.2 mW/°C. TPA6021A4 www.ti.com SLOS465 – JUNE 2005 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 –40 V 0.8 V 85 °C MAX UNIT ELECTRICAL CHARACTERISTICS TA = 25°C, VDD = PVDD = 5.5 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP VDD = 5.5 V, Gain = 0 dB, SE/BTL = 0 V 30 mV 50 mV | VOO | Output offset voltage (measured differentially) PSRR Power supply rejection ratio VDD = PVDD = 4 V to 5.5 V | 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 = 5.5 V, VI = 0 V 1 µA IDD Supply current, no load VDD = 5.5 V, Gain = 20 dB, SE/BTL = 0 V –42 –70 dB VDD = PVDD = 5.5 V, SE/BTL = 0 V, SHUTDOWN = 2 V 6 7.5 9 VDD = PVDD = 5.5 V, SE/BTL = 5.5 V, SHUTDOWN = 2 V 3 5 6 IDD Supply current, max power into a 4-Ω load VDD = 5 V = PVDD, SE/BTL = 0 V, SHUTDOWN = 2 V, RL = 4 Ω, PO = 2 W, stereo IDD(SD) Supply current, shutdown mode SHUTDOWN = 0 V mA 1.3 1 ARMS 20 µA OPERATING CHARACTERISTICS TA = 25°C, VDD = PVDD = 5 V, RL = 4 Ω, Gain = 20 dB, Stereo, External Heatsink (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX 1.5 (1) THD = 1%, f = 1 kHz UNIT PO Output power THD+N Total harmonic distortion + noise PO = 1 W, RL = 8 Ω , f = 20 Hz to 20 kHz VOH High-level output voltage RL = 8 Ω, Measured between output and VDD = 5.5 V 700 mV VOL Low-level output voltage RL = 8 Ω, Measured between output and GND, VDD = 5.5 V 400 mV V(Bypass) Bypass voltage (Nominally VDD/2) Measured at pin 16, No load, VDD = 5.5 V 2.85 V Supply ripple rejection ratio f = 1 kHz, Gain = 0 dB, C(BYP) = 0.47 µF Noise output voltage f = 20 Hz to 20 kHz, Gain = 0 dB, C(BYP) = 0.47 µF Input impedance (see Figure 18) VOLUME = 5 V ZI (1) W 2 (1) THD = 10%, f = 1 kHz, VDD = 5 V