Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Audio amplifier 1-channel (mono) Class D TSSOP 24

FEATURES

DESCRIPTION

APPLICATIONS

Functional Schematic Diagram

INN

INP

GAIN0

SHUTDOWN

PGND

VCLAMP

BSN

OUTN

PGND

VREF

BYPASS

COSC

ROSC

AGND

BSP

OUTP

GAIN1

OUTP

PGND

51 Ω

0.22 µF

1 µF

C12

220 pF

C11

1 µF

(Ferrite

Bead)

(Ferrite

Bead)

C15

1 nF

C14

1 nF

51 Ω

0.22 µF

1 µF

10 µF

C10

1 µF

0.47 µF

IN−

IN+

GAIN SELECT

SHUTDOWN

CONTROL

TPA3007D1

120 kΩ

TPA3007D1

SLOS418D – SEPTEMBER 2003 – REVISED MARCH 2008

www.ti.com

6.5-W MONO CLASS-D AUDIO POWER AMPLIFIER

• 6.5 W Into 8- Ω Load From 12-V Supply

(10% THD+N)

The TPA3007D1 is a 6.5-W mono bridge-tied load

(BTL) class-D audio power amplifier with high

• Short Circuit Protection (Short to V

, Short to

efficiency, eliminating the need for heat sinks. The

GND, Short Between Outputs)

TPA3007D1 can drive 8- Ω speakers with only a

• Third-Generation Modulation Technique:

ferrite bead filter required to reduce EMI.

– Replaces Large LC Filter With Small,

The gain of the amplifier is controlled by two input

Low-Cost Ferrite Bead Filter in Most

terminals, GAIN1 and GAIN0. This allows the

Applications

amplifier to be configured for a gain of 12, 18, 23.6,

– Improved Efficiency

and 36 dB. The differential input stage provides high

common mode rejection and improved power supply

– Improved SNR

rejection.

• Low Supply Current ... mA Typ at 12 V

The amplifier also includes "de-pop" circuitry to

• Shutdown Control ... < 1 µ A Typ

reduce the amount of pop at power-up and when

cycling SHUTDOWN.

• LCD Monitors/TVs

The TPA3007D1 is available in the 24-pin TSSOP

package (PW) and does not require an external heat

• Desktop Replacement Notebook PCs

sink.

• Hands-Free Car Kits

• Powered Speakers

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.

Summary of content (23 pages)

PAGE 1
TPA3007D1 www.ti.com SLOS418D – SEPTEMBER 2003 – REVISED MARCH 2008 6.5-W MONO CLASS-D AUDIO POWER AMPLIFIER FEATURES 1 • • • • • DESCRIPTION 6.5 W Into 8-Ω Load From 12-V Supply (10% THD+N) Short Circuit Protection (Short to VCC, Short to GND, Short Between Outputs) Third-Generation Modulation Technique: – Replaces Large LC Filter With Small, Low-Cost Ferrite Bead Filter in Most Applications – Improved Efficiency – Improved SNR Low Supply Current ... mA Typ at 12 V Shutdown Control ...
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TPA3007D1 www.ti.com SLOS418D – SEPTEMBER 2003 – REVISED MARCH 2008 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 DEVICES TA TSSOP (PW) (1) -40°C to 85°C (1) TPA3007D1PW The PW package is available taped and reeled. To order a taped and reeled part, add the suffix R to the part number (e.g., TPA3007D1PWR).
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TPA3007D1 www.ti.com SLOS418D – SEPTEMBER 2003 – REVISED MARCH 2008 Terminal Functions TERMINAL NAME NO. AGND 18, 19 I/O DESCRIPTION Analog ground terminal BSN 8 I Bootstrap terminal for high-side gate drive of negative BTL output (connect a 0.22 µF capacitor with a 51 Ω resistor in series from OUTN to BSN) BSP 17 I Bootstrap terminal for high-side gate drive of positive BTL output (connect a 0.
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TPA3007D1 www.ti.com SLOS418D – SEPTEMBER 2003 – REVISED MARCH 2008 ABSOLUTE MAXIMUM RATINGS over operating free-air temperature range (unless otherwise noted) (1) UNIT Supply voltage: VCC, PVCC –0.3 V to 21 V ≥7Ω Load impedance, RL Input voltage SHUTDOWN –0.3 V to VCC + 0.3 V GAIN0, GAIN1 –0.3 V to 5.5 V INN, INP –0.
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TPA3007D1 www.ti.com SLOS418D – SEPTEMBER 2003 – REVISED MARCH 2008 ELECTRICAL CHARACTERISTICS TA= 25°C, PVCC = VCC = 12 V (unless otherwise noted) PARAMETERS TEST CONDITIONS MIN TYP MAX UNIT |VOS| Output offset voltage (measured differentially) VI = 0 V, AV = 12 dB, 18, 23.6 dB 50 PSRR Power supply rejection ratio PVCC = 11.5 V to 12.
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TPA3007D1 www.ti.com SLOS418D – SEPTEMBER 2003 – REVISED MARCH 2008 TYPICAL CHARACTERISTICS Table 1.
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TPA3007D1 www.ti.com SLOS418D – SEPTEMBER 2003 – REVISED MARCH 2008 SUPPLY CURRENT vs SUPPLY VOLTAGE SHUTDOWN CURRENT vs SUPPLY VOLTAGE 11 5 ICC(SD) - Shutdown Current - µA ICC - Supply Current - mA SHUTDOWN = 0.8 V 10 9 8 7 6 4 3 2 1 0 8 10 12 14 16 18 8 10 VCC - Supply Voltage - V 14 16 Figure 3. Figure 4.
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TPA3007D1 www.ti.com SLOS418D – SEPTEMBER 2003 – REVISED MARCH 2008 TOTAL HARMONIC DISTORTION PLUS NOISE vs FREQUENCY TOTAL HARMONIC DISTORTION PLUS NOISE vs FREQUENCY 1 PO = 4 W 0.1 PO = 2 W 0.01 20 100 1k 10 k PO = 5 W 0.1 PO = 2 W VCC = 18 V RL = 8 Ω 0.01 20 20 k 100 f − Frequency − Hz Figure 7. Figure 8.
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TPA3007D1 www.ti.com SLOS418D – SEPTEMBER 2003 – REVISED MARCH 2008 COMMON-MODE REJECTION RATIO vs FREQUENCY INPUT OFFSET VOLTAGE vs COMMON-MODE INPUT VOLTAGE 6 VCC = 8 V to 18 V RL = 8 Ω 5 -41 VIO - Input Offset Voltage - mV CMRR - Common-Mode Rejection Ratio - dB -40 -42 -43 -44 VCC = 8 V to 18 V 4 3 2 1 0 -1 -2 -45 -3 -46 20 100 1k f - Frequency - Hz 10 k -4 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 VIC - Common-Mode Input Voltage - V Figure 11. Figure 12.
PAGE 10
TPA3007D1 www.ti.com SLOS418D – SEPTEMBER 2003 – REVISED MARCH 2008 APPLICATION INFORMATION APPLICATION CIRCUIT U1 TPA3007D1 C1 IN− 0.47 µF 1 2 IN+ C2 0.47 µF 3 GAIN SELECT 4 GAIN SELECT 5 SHUTDOWN CONTROL 6 7 C10 1 µF VCC R2 C8 0.
PAGE 11
TPA3007D1 www.ti.com SLOS418D – SEPTEMBER 2003 – REVISED MARCH 2008 OUTP OUTN +12 V Differential Voltage Across Load 0V –12 V Current Figure 14. Traditional Class-D Modulation Scheme's Output Voltage and Current Waveforms Into an Inductive Load With No Input TPA3007D1 MODULATION SCHEME The TPA3007D1 uses a modulation scheme that still has each output switching from ground to VCC. However, OUTP and OUTN are now in phase with each other with no input.
PAGE 12
TPA3007D1 www.ti.com SLOS418D – SEPTEMBER 2003 – REVISED MARCH 2008 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 15. The TPA3007D1 Output Voltage and Current Waveforms Into an Inductive Load DRIVING THE OUTPUT INTO CLIPPING The output of the TPA3007D1 may be driven into clipping to attain a higher output power than is possible with no distortion.
PAGE 13
TPA3007D1 www.ti.com SLOS418D – SEPTEMBER 2003 – REVISED MARCH 2008 Ferrite Chip Bead OUTP 1 nF 7 Ω or Greater Ferrite Chip Bead OUTN 1 nF Figure 16. Typical Ferrite Chip Bead Filter (Chip bead example: Fair-Rite 2512067007Y3) Ferrite Chip Bead 33 µH OUTP 1 nF Ferrite Chip Bead 0.47 µF 8Ω 33 µH OUTN 1 nF 0.47 µF Figure 17.
PAGE 14
TPA3007D1 www.ti.com SLOS418D – SEPTEMBER 2003 – REVISED MARCH 2008 THERMAL CONSIDERATION: OUTPUT POWER AND RECOMMENDED AMBIENT TEMPERATURE To calculate the maximum ambient temperature, this equation can be used: T +T * θ P A(max) J JA Dissipated where : T + 125°C J θ JA + 1 1 + + 87.3°CńW 0.01145 derating factor (2) (The derating factor for the 24-pin PW package is given in the dissipation rating table.
PAGE 15
TPA3007D1 www.ti.com SLOS418D – SEPTEMBER 2003 – REVISED MARCH 2008 Zf Ci Zi IN Input Signal The -3 dB frequency can be calculated using Equation 4. Use Table 2 for ZI values. 1 f+ 2p Z iCi (4) INPUT CAPACITOR, CI In the typical application an input capacitor I) is required to allow the amplifier to bias the input signal to the proper dc level for optimum operation.
PAGE 16
TPA3007D1 www.ti.com SLOS418D – SEPTEMBER 2003 – REVISED MARCH 2008 BSN AND BSP CAPACITORS The full H-bridge output stage uses only NMOS transistors. It therefore requires bootstrap capacitors for the high side of each output to turn on correctly. A 0.22-µF ceramic capacitor, rated for at least 25 V, must be connected from each output to its corresponding bootstrap input. Specifically, one 0.22-µF capacitor must be connected from OUTP to BSP, and one 0.22-µF capacitor must be connected from OUTN to BSN.
PAGE 17
TPA3007D1 www.ti.com SLOS418D – SEPTEMBER 2003 – REVISED MARCH 2008 Ideally, the device should be held in shutdown when the system powers up and brought out of shutdown once any digital circuitry has settled. However, if SHUTDOWN is to be left unused, the terminal may be connected directly to VCC. USING LOW-ESR CAPACITORS Low-ESR capacitors are recommended throughout this application section. A real (as opposed to ideal) capacitor can be modeled simply as a resistor in series with an ideal capacitor.
PAGE 18
PACKAGE OPTION ADDENDUM www.ti.
PAGE 19
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device TPA3007D1PWR Package Package Pins Type Drawing TSSOP PW 24 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 2000 330.0 16.4 Pack Materials-Page 1 6.95 B0 (mm) K0 (mm) P1 (mm) 8.3 1.6 8.0 W Pin1 (mm) Quadrant 16.
PAGE 20
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) TPA3007D1PWR TSSOP PW 24 2000 367.0 367.0 38.
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