TPA3004D2 www.ti.
TPA3004D2 SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 www.ti.com 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 PACKAGED DEVICE TA 48-PIN HTQFP (PHP) 40°C to 85°C (1) (1) TPA3004D2PHP The PHP package is available taped and reeled. To order a taped and reeled part, add the suffix R to the part number (e.g.
TPA3004D2 www.ti.com SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 FUNCTIONAL BLOCK DIAGRAM V2P5 PVCC V2P5 VAROUTR VClamp Gen V2P5 VCLAMPR BSRN Gain Adj. PVCCR(2) Gate Drive Cint2 RINN Gain Adj. Rfdbk2 RINP ROUTN(2) Deglitch & PGNDR Modulation Logic BSRP PVCCR(2) Rfdbk2 V2P5 VREF Gate Drive Cint2 ROUTP(2) VOLUME VARDIFF VARMAX FADE Gain Control PGNDR To Gain Adj.
TPA3004D2 SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 www.ti.com Pin Functions Pin NO. NAME I/O DESCRIPTION AGND 26 - Analog ground for digital/analog cells in core AVCC 33 - High-voltage analog power supply (8.5 V to 18 V) AVDD 29 O 5-V Regulated output capable of 100-mA output AVDDREF 7 O 5-V Reference output—provided for connection to adjacent VREF terminal.
TPA3004D2 www.ti.com SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 Pin Functions (continued) Pin NO. I/O NAME DESCRIPTION VOLUME 11 I DC voltage that sets the gain of the Class-D and VAROUT outputs. VREF 8 I Analog reference for gain control section. V2P5 4 O 2.5-V Reference for analog cells, as well as reference for unused audio input when using single-ended inputs. Thermal Pad — Connect to AGND and PGND—should be center point for both grounds.
TPA3004D2 SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 www.ti.com RECOMMENDED OPERATING CONDITIONS MIN MAX UNIT Supply voltage, VCC PVCC, AVCC; RL ≥ 3.6 Ω 8.5 18 V Volume reference voltage VREF 3.0 5.5 V Volume control pins, input voltage VARDIFF, VARMAX, VOLUME 5.5 V SD High-level input voltage, VIH Low-level input voltage, VIL 2 MODE 3.5 FADE 4 SD 0.
TPA3004D2 www.ti.com SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 AC CHARACTERISTICS FOR CLASS-D OUTPUTS TA = 25°C, VCC = 12 V, RL = 8 Ω (unless otherwise noted) PARAMETER TEST CONDITIONS kSVR Supply ripple rejection ratio VCC = 11.5 V to 12.5 V from 10 Hz to 1 kHz, Gain = 36 dB –67 dB PO(max) Maximum continuous output power(thermally limited) RL = 4 Ω 7.5 W RL = 8 Ω, VCC = 15 V 12 W Output integrated noise floor 20 Hz to 22 kHz, No weighting filter, Gain = 0.
TPA3004D2 SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 www.ti.com Table 1. DC Volume Control for Class-D Outputs (1) 8 VOLTAGE ON THE VOLUME PIN AS A PERCENTAGE OF VREF (INCREASING VOLUME OR FIXED GAIN) VOLTAGE ON THE VOLUME PIN AS A PERCENTAGE OF VREF (DECREASING VOLUME) GAIN OF CLASS-D AMPLIFIER % % dB 0 – 4.5 0 – 2.9 –75 (1) 4.5 – 6.7 2.9 – 5.1 –40.0 6.7– 8.91 5.1 – 7.2 –37.5 8.9 – 11.1 7.2 – 9.4 –35.0 11.1 – 13.3 9.4 – 11.6 –32.4 13.3 – 15.5 11.6 – 13.8 –29.9 15.5 – 17.
TPA3004D2 www.ti.com SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 Table 2. DC Volume Control for VAROUT Outputs (1) (2) VAROUT_VOLUME (V) (1) – FROM FIGURE 24 – AS A PERCENTAGE OF VREF (INCREASING VOLUME OR FIXED GAIN) VAROUT_VOLUME (V) – FROM FIGURE 24 – AS A PERCENTAGE OF VREF (DECREASING VOLUME) GAIN OF VAROUT AMPLIFIER % % dB 0 – 4.5 0 – 2.9 –66 (1) 4.5 – 6.7 2.9 – 5.1 –56.0 6.7– 8.91 5.1 – 7.2 –53.5 8.9 – 11.1 7.2 – 9.4 –50.9 11.1 – 13.3 9.4 – 11.6 –48.4 13.3 – 15.5 11.
TPA3004D2 SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 www.ti.com TYPICAL CHARACTERISTICS Table 3.
TPA3004D2 www.ti.
TPA3004D2 SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 www.ti.com SHUTDOWN SUPPLY CURRENT vs SUPPLY VOLTAGE SUPPLY CURRENT vs OUTPUT POWER 2500 4.5 I CC– Supply Current – mA 2000 I CC(sd)– Shutdown Supply Current – µ A VCC = 12 V, MODE = 2 V, Class-D, Left/Right Channel Total Output Power 8Ω 1500 4Ω 1000 16 Ω 500 0 0 5 10 15 PO – Output Power – W 20 SD = 0 V, No Load 4 3.5 3 2.5 2 1.5 1 0.5 0 25 8 6 10 12 14 VCC – Supply Voltage – V Figure 5.
TPA3004D2 www.ti.com SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 TOTAL HARMONIC DISTORTION + NOISE vs FREQUENCY TOTAL HARMONIC DISTORTION + NOISE vs FREQUENCY 10 VCC = 12 V RL = 8 Ω Gain = +36 dB Class-D THD+N –Total Harmonic Distortion + Noise – dB THD+N – Total Harmonic Distortion + Noise – % 1 PO = 0.5 W PO = 5 W 0.1 PO = 2.5 W 0.01 10 100 1k 10k VCC = 18 V, Gain = 36 dB, RL = 8 Ω 5 2 1 0.5 PO = 1 W PO = 4 W 0.2 0.1 0.05 PO = 12 W 0.02 0.
TPA3004D2 SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 www.ti.com TOTAL HARMONIC DISTORTION + NOISE vs OUTPUT POWER TOTAL HARMONIC DISTORTION + NOISE vs OUTPUT POWER 10 VCC = 8 V RL = 8 Ω Gain = +13.2 dB Class-D THD+N – Total Harmonic Distortion + Noise – % THD+N – Total Harmonic Distortion + Noise – % 10 1 f = 1 kHz f = 20 Hz 0.1 0.01 10 m 100 m 1 10 VCC = 12 V RL = 8 Ω Gain = +13.2 dB Class-D 1 f = 20 Hz f = 1 kHz 0.1 0.01 10 m PO – Output Power – W 100 m Figure 13.
TPA3004D2 www.ti.com SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 TOTAL HARMONIC DISTORTION + NOISE vs OUTPUT POWER SUPPLY RIPPLE REJECTION RATIO vs FREQUENCY –40 VCC = 12 V RL = 4 Ω Gain = 13.2 dB k SVR – Supply Ripple Rejection Ratio – dB THD+N – Total Harmonic Distortion + Noise – % 10 1 f = 20 Hz f = 1 kHz 0.1 0.01 20 m 100 m 1 –45 RL = 8 Ω, C2p5 = 1 µF, Class-D –50 –55 VCC = 8 V –60 –65 VCC = 12 V –70 –75 –80 20 10 100 PO – Output Power – W Figure 17.
TPA3004D2 SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 www.ti.com CROSSTALK vs FREQUENCY INPUT OFFSET VOLTAGE vs COMMON-MODE INPUT VOLTAGE 6 0 VCC = 12 V Class-D –20 4 Crosstalk – dB VIO – Input Offset Voltage – mV 5 VCC = 12 V, C2p5 = 1 µF, PO = 1 W, Gain = +13.2 dB, Class-D, RL = 8 Ω –10 3 2 –30 –40 –50 –60 1 –70 0 –80 –1 0 4 1 2 3 VICM – Common-Mode Input Voltage – V –90 20 5 100 Figure 21. Figure 22.
TPA3004D2 www.ti.com SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 COMMON-MODE REJECTION RATIO vs FREQUENCY INPUT RESISTANCE vs GAIN 160 VCC = 12 V, RL = 8 Ω, C2p5 = 1 µF, Class-D –50 VAROUT 140 RL – Input Resistance – k Ω –60 –70 –80 120 100 80 60 40 –90 20 –100 10 100 1k 10 k f – Frequency – Hz 0 –50 100 k –30 Figure 25. 10 BCLOSED LOOP RESPONSE 0 12.853 VCC = 12 V, Gain = +20 dB, RL = 8 Ω, Inputs AC Coupled to GND, VAROUT, No Filter −20 −40 −60 Gain − dB −120 −140 5.
TPA3004D2 SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 www.ti.com COMMON-MODE REJECTION RATIO vs FREQUENCY CROSSTALK (VAROUTL-TO-VAROUTR) vs FREQUENCY 0 VCC = 12 V, RL = 8 Ω , C2P5 = 1 µF, VAROUT –42 –44 VO = 1 Vrms, RL = 10 kΩ, VAROUT –10 –20 –46 G = 20 dB G = 10 dB G = 0 dB –30 Crosstalk – dB CMRR – Common-Mode Rejection Ratio – dBv –40 –48 –50 –52 –40 G = –10 dB –50 –60 –54 –70 –56 –80 –58 –90 –60 20 –100 100 1k f– Frequency – Hz 20 10 k 100 1k Figure 29. Figure 30.
TPA3004D2 www.ti.com SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 SUPPLY RIPPLE REJECTION RATIO vs FREQUENCY TOTAL HARMONIC DISTORTION + NOISE vs FREQUENCY 2 1 –40 VCC = 12 V RL = 32 Ω, PO = 5 mW, Gain = +7.9 dB, VAROUT k SVR – Supply Ripple Rejection Ratio – dB THD+N –Total Harmonic Distortion + Noise – % 10 0.2 0.1 0.02 0.01 0.005 20 100 1k f – Frequency – Hz 10 k –50 VCC = 12 V VAROUT –60 –70 –80 –90 –100 –110 20 100 1k 10 k f – frequency – Hz Figure 33. Figure 34.
TPA3004D2 SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 www.ti.com C22 1 nF VCC ROUT+ GND VCC ROUT– APPLICATION INFORMATION C23 1 nF L1 (Bead) L2 (Bead) 10 µF PGND 10 nF C15 0.1uF 0.1uF C9 C10 10 nF SHUTDOWN C2 1 µF C3 1 µF 1 µF C4 LIN– 1 µF MODEB BSRP PVCCR PVCCR ROUTP ROUTP PGNDR PGNDR ROUTN ROUTN V2P5 AVCC LINP VAROUTR VAROUTR LINN VAROUTL VAROUTL TPA3004D2 AVDDREF FADE VREF AVDD VARDIFF COSC VARMAX ROSC T5 VOLUME AGND REFGND VCLAMPL MODE C13 0.
AGND REFGND VOLUME VARMAX VARDIFF VREF AVDDREF LINN BSRN T5 1 µF LINP V2P5 PGNDL Copyright © 2003–2011, Texas Instruments Incorporated Product Folder Link(s): TPA3004D2 C24 1 nF L3 (Bead) C25 1 nF L4 (Bead) PGND PGNDL 10 µ F 0.1 µ F VCLAMPR VCLAMPL AGND ROSC COSC AVDD FADE VAROUTL VAROUTR AVCC MODE MODE_OUT 10 nF C21 PVCCL LOUTN LOUT– VCC PVCCR PVCCL VCC PVCCR PVCCL 10 nF LOUTN C12 LOUTP C11 PVCCR 0.
TPA3004D2 SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 www.ti.com Class-D Operation This section focuses on the class-D operation of the TPA3004D2. Traditional Class-D Modulation Scheme The traditional class-D modulation scheme, which is used in the TPA032D0x family, has a differential output where each output is 180 degrees out of phase and changes from ground to the supply voltage, VCC.
TPA3004D2 www.ti.com SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 OUTP OUTN Differential Voltage Across Load Output = 0 V +12 V 0V –12 V Current OUTP OUTN Differential Voltage Output > 0 V +12 V 0V Across Load –12 V Current Figure 38.
TPA3004D2 SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 www.ti.com Damage may occur if the voice coil cannot handle the additional heat generated from the high-frequency switching current. The amount of power dissipated in the speaker may be estimated by first considering the overall efficiency of the system.
TPA3004D2 www.ti.com SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 33 µH OUTP L1 33 µH OUTN L2 C1 C2 0.1 µF 0.47 µF C3 0.1 µF Figure 40. Typical LC Output Filter, Cutoff Frequency of 27 kHz, Speaker Impedance = 8 Ω Ferrite Chip Bead OUTP 1 nF Ferrite Chip Bead OUTN 1 nF Figure 41. Typical Ferrite Chip Bead Filter (Chip bead example: Fair-Rite 2512067007Y3) Volume Control Operation Three pins labeled VOLUME, VARDIFF, and VARMAX control the class-D volume when driving speakers and the VAROUT volume.
TPA3004D2 SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 www.ti.com The trip point, where the gain actually changes, is different depending on whether the voltage on the VOLUME terminal is increasing or decreasing as a result of hysteresis about each trip point. The hysteresis ensures that the gain control is monotonic and does not oscillate from one gain step to another. A pictorial representation of the volume control can be found in Figure 43.
TPA3004D2 www.ti.com SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 Decreasing Voltage on VOLUME Terminal Class-D Gain – dB 5.6 3.1 Increasing Voltage on VOLUME Terminal 0.5 2.00 (40.1%*VREF) 2.21 2.10 2.11 (44.1%*VREF) (41.9%*VREF) (42.3%*VREF) Voltage on VOLUME Pin – V Figure 43. DC Volume Control Operation, VREF = 5 V MODE OPERATION The MODE pin is an input for controlling the output mode of the TPA3004D2. A logic HIGH on this pin disables the Class-D outputs.
TPA3004D2 SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 www.ti.com FADE OPERATION The FADE terminal is a logic input that controls the operation of the volume control circuitry during transitions to and from the shutdown state and during power-up. A logic low on this terminal, places the amplifier in the fade mode.
TPA3004D2 www.ti.com SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 SD = 0 V GND Figure 45. Differential Output With FADE Terminal Held High The switching frequency is determined using the values of the components connected to ROSC (pin 27) and COSC (pin 28) and may be calculated with the following equation: fOSC = 6.6 / (ROSC × COSC) . INTERNAL 2.5-V BIAS GENERATOR CAPACITOR SELECTION The internal 2.
TPA3004D2 SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 www.ti.com INPUT CAPACITOR, CI In the typical application an input capacitor (CI) is required to allow the amplifier to bias the input signal to the proper dc level (V2P5) for optimum operation. In this case, CI and the input impedance of the amplifier (ZI) form a high-pass filter with the corner frequency determined in equation 6.
TPA3004D2 www.ti.com SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 By driving the outputs into heavy clipping with a sine wave of less than 50 Hz, the bootstrap voltage can decrease below the minimum Vgs required to keep the high-side output MOSFET turned on. When this occurs, the output transistor becomes a source-follower and the output drops from VCC to approximately Vclamp (voltage on pins 25 and 36).
TPA3004D2 SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 www.ti.com SD OPERATION The TPA3004D2 employs a shutdown mode of operation designed to reduce supply current (ICC) to the absolute minimum level during periods of nonuse for power conservation. The SD input terminal should be held high (see specification table for trip point) during normal operation when the amplifier is in use. Pulling SD low causes the outputs to mute and the amplifier to enter a low-current state, ICC(SD) = 10 µA.
TPA3004D2 www.ti.com SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 PDissipated = PO(average) x ((1 / Efficiency) – 1) Efficiency = ~85% for an 8-Ω load = ~75% for a 4-Ω load (9) Example. What is the maximum ambient temperature for an application that requires the TPA3004D2 to drive 10 W into an 8-Ω speaker (stereo)? PDissipated = 20 W x ((1 / 0.85) – 1) = 3.5 W space (PO = 10 W * 2) TAmax = 125°C – (19°C/W x 3.5 W) = 58.
TPA3004D2 SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 www.ti.com THERMAL RESISTANCE vs COPPER AREA 2-LAYER PCB THERMAL RESISTANCE vs COPPER AREA 4-LAYER PCB 35 θ JA – Thermal Resistance – °C/W θ JA – Thermal Resistance – °C/W 35 30 25 20 15 1 1.5 2 2.5 3 3.5 4 Copper Area – sq. Inches 4.5 5 30 25 20 15 1 2 3 4 Copper Area – sq. Inches 5 Figure 47.
TPA3004D2 www.ti.com SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 BASIC MEASUREMENT SYSTEM This application note focuses on methods that use the basic equipment listed below: • Audio analyzer or spectrum analyzer • Digital multimeter (DMM) • Oscilloscope • Twisted pair wires • Signal generator • Power resistor(s) • Linear regulated power supply • Filter components • EVM or other complete audio circuit Figure 49 shows the block diagrams of basic measurement systems for class-AB and class-D amplifiers.
TPA3004D2 SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 www.ti.com Power Supply Signal Generator APA RL Analyzer 20 Hz – 20 kHz (a) Basic Class–AB Power Supply Low–Pass RC Filter Signal Generator Class–D APA RL Low–Pass RC Filter Analyzer 20 Hz – 20 kHz (b) Filter–Free and Traditional Class–D (1) For efficiency measurements with filter-free class-D, RL should be an inductive load like a speaker. Figure 49.
TPA3004D2 www.ti.com SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 Evaluation Module Audio Power Amplifier Generator Analyzer Low–Pass RC Filter CIN VGEN RGEN RIN ROUT RIN ROUT CIN RGEN RL Low–Pass RC Filter Twisted–Pair Wire RANA CANA RANA CANA Twisted–Pair Wire Figure 50. Differential Input—BTL output Measurement Circuit The generator should have balanced outputs and the signal should be balanced for best results.
TPA3004D2 SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 Load www.ti.com RC Low–Pass Filters RFILT AP Analyzer Input CFILT VL= VIN RL CANA RANA CANA RANA VOUT RFILT CFILT To APA GND Figure 51. Measurement Low-Pass Filter Derivation Circuit—Class-D APAs The transfer function for this circuit is shown in Equation 10 where wO = REQCEQ, REQ = RFILT||RANA and CEQ = (CFILT + CANA).
TPA3004D2 www.ti.com SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011 REVISION HISTORY Changes from Original (February 2003) to Revision A • Page Changed the data sheet From: Product Preview To Production Data ................................................................................. 1 Changes from Revision A (March 2003) to Revision B Page • Updated the FUNCTIONAL BLOCK DIAGRAM ...................................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.com 6-Jun-2013 continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device TPA3004D2PHPR Package Package Pins Type Drawing HTQFP PHP 48 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 1000 330.0 16.4 Pack Materials-Page 1 9.6 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 9.6 1.5 12.0 16.
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPA3004D2PHPR HTQFP PHP 48 1000 367.0 367.0 38.
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