Datasheet

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FEATURES APPLICATIONS

DESCRIPTION

APPLICATION CIRCUIT

PWM H-

IN-

Bridge

O+

O-

Internal

Oscillator

ToBattery

GND

Bias

Circuitry

Differential

Input

TPA2006D1

SHUTDOWN

IN+

IN−

O−

GND

O+

8-PINQFN(DRB)PACKAGE

(TOP VIEW)

NC − Nointernalconnection

IN+

TPA2006D1

www.ti.com

................................................................................................................................................. SLOS498A – SEPTEMBER 2006 – REVISED JULY 2008

1.45-W MONO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER WITH 1.8-V

COMPATIBLE INPUT THRESHOLDS

• Ideal for Wireless or Cellular Handsets and

• Maximum Battery Life and Minimum Heat

PDAs

– Efficiency With an 8- Ω Speaker:

– 88% at 400 mW

– 80% at 100 mW

The TPA2006D1 is a 1.45-W high efficiency filter-free

– 2.8-mA Quiescent Current

class-D audio power amplifier in a 3 mm × 3 mm

– 0.5- µ A Shutdown Current

QFN package that requires only three external

components. The SHUTDOWN pin is fully compatible

• Shutdown Pin has 1.8-V Compatible

with 1.8-V logic GPIO, such as are used on low

Thresholds

power cellular chipsets.

• Capable of Driving an

Features like 88% efficiency, – 75-dB PSRR,

8- Ω Speaker (2.5 V ≤ V

≤ 5.5 V) and a

improved RF-rectification immunity, and small total

4- Ω Speaker (2.5 V ≤ V

≤ 4.2 V)

PCB footprint make the TPA2006D1 ideal for cellular

• Only Three External Components

handsets. A fast start-up time of 1 ms with minimal

pop makes the TPA2006D1 ideal for PDA

– Optimized PWM Output Stage Eliminates

applications.

LC Output Filter

– Internally Generated 250-kHz Switching

In cellular handsets, the earpiece, speaker phone,

and melody ringer can each be driven by the

Frequency Eliminates Capacitor and

TPA2006D1. The TPA2006D1 allows independent

Resistor

gain while summing signals from separate sources,

– Improved PSRR ( – 75 dB) and Wide Supply

and has a low 36 µ V noise floor, A-weighted.

Voltage (2.5 V to 5.5 V) Eliminates Need for

The TPA2006D1 has short-circuit and thermal

a Voltage Regulator

protection.

– Fully Differential Design Reduces RF

Rectification and Eliminates Bypass

Capacitor

– Improved CMRR Eliminates Two Input

Coupling Capacitors

• Space Saving 3 mm x 3 mm QFN Package

(DRB)

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 (26 pages)

PAGE 1
TPA2006D1 www.ti.com ................................................................................................................................................. SLOS498A – SEPTEMBER 2006 – REVISED JULY 2008 1.45-W MONO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER WITH 1.8-V COMPATIBLE INPUT THRESHOLDS FEATURES APPLICATIONS • • 1 • • • • Maximum Battery Life and Minimum Heat – Efficiency With an 8-Ω Speaker: – 88% at 400 mW – 80% at 100 mW – 2.8-mA Quiescent Current – 0.
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TPA2006D1 SLOS498A – SEPTEMBER 2006 – REVISED JULY 2008 ................................................................................................................................................. 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.
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TPA2006D1 www.ti.com ................................................................................................................................................. SLOS498A – SEPTEMBER 2006 – REVISED JULY 2008 ELECTRICAL CHARACTERISTICS TA = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS |VOS| Output offset voltage (measured differentially) VI = 0 V, AV = 2 V/V, VDD = 2.5 V to 5.5 V PSRR Power supply rejection ratio VDD = 2.5 V to 5.5 V CMRR Common mode rejection ratio VDD = 2.
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TPA2006D1 SLOS498A – SEPTEMBER 2006 – REVISED JULY 2008 ................................................................................................................................................. www.ti.
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TPA2006D1 www.ti.com .................................................................................................................................................
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TPA2006D1 SLOS498A – SEPTEMBER 2006 – REVISED JULY 2008 ................................................................................................................................................. www.ti.com EFFICIENCY vs OUTPUT POWER EFFICIENCY vs OUTPUT POWER POWER DISSIPATION vs OUTPUT POWER 0.7 90 90 Class-AB, VDD = 5 V, RL = 8 W VDD = 5 V, RL = 8 W, 33 mH 60 50 40 Class-AB, VDD = 5 V, RL = 8 W 30 20 0.6 70 VDD = 2.5 V, RL = 8 W, 33 mH Efficiency - % VDD = 4.
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TPA2006D1 www.ti.com ................................................................................................................................................. SLOS498A – SEPTEMBER 2006 – REVISED JULY 2008 1.5 THD+N = 10% 1 THD+N = 1% 0.5 3 3.5 4 VDD - Supply Voltage - V 20 RL = 8 W f = 1 kHz 10 5V 3.6 V 2.5 V 1 0.1 0.001 0.01 0.1 1 Power Output − W 10 20 R L = 4 W, f = 1 kHz, Gain = 2 V/V 10 VDD = 2.5 V 5 2 VDD = 3.6 V 1 VDD = 4.2 V 0.5 0.2 0.01 0.
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TPA2006D1 SLOS498A – SEPTEMBER 2006 – REVISED JULY 2008 ................................................................................................................................................. www.ti.com SUPPLY RIPPLE REJECTION RATIO vs FREQUENCY SUPPLY RIPPLE REJECTION RATIO vs FREQUENCY −30 VDD = 2.5 V 1 VDD = 5 V −30 Inputs ac-grounded CI = 2 mF RL = 8 W Gain = 2 V/V −40 −50 VDD = 2. 5 V VDD = 3.6 V −60 −70 −80 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 VDD = 5 V −60 −70 VDD = 3.
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TPA2006D1 www.ti.com ................................................................................................................................................. SLOS498A – SEPTEMBER 2006 – REVISED JULY 2008 APPLICATION INFORMATION FULLY DIFFERENTIAL AMPLIFIER The TPA2006D1 is a fully differential amplifier with differential inputs and outputs. The fully differential amplifier consists of a differential amplifier and a common-mode amplifier.
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TPA2006D1 SLOS498A – SEPTEMBER 2006 – REVISED JULY 2008 ................................................................................................................................................. www.ti.com Input Resistors (RI) The input resistors (RI) set the gain of the amplifier according to Equation 1. V Gain + 2 x 150 kW R V I ǒǓ (1) Resistor matching is important in fully differential amplifiers. The balance of the output on the reference voltage depends on matched ratios of the resistors.
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TPA2006D1 www.ti.com ................................................................................................................................................. SLOS498A – SEPTEMBER 2006 – REVISED JULY 2008 To Battery Internal Oscillator RI INPWM _ Differential Input RI VDD HBridge CS VO+ VO- + IN+ GND Bias Circuitry SHUTDOWN TPA2006D1 Filter-Free Class D Figure 27.
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TPA2006D1 SLOS498A – SEPTEMBER 2006 – REVISED JULY 2008 ................................................................................................................................................. www.ti.com SUMMING INPUT SIGNALS WITH THE TPA2006D1 Most wireless phones or PDAs need to sum signals at the audio power amplifier or just have two signal sources that need separate gain. The TPA2006D1 makes it easy to sum signals or use separate signal sources with different gains.
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TPA2006D1 www.ti.com ................................................................................................................................................. SLOS498A – SEPTEMBER 2006 – REVISED JULY 2008 Summing a Differential Input Signal and a Single-Ended Input Signal Figure 31 shows how to sum a differential input signal and a single-ended input signal. Ground noise can couple in through IN+ with this method. It is better to use differential inputs.
PAGE 14
TPA2006D1 SLOS498A – SEPTEMBER 2006 – REVISED JULY 2008 ................................................................................................................................................. www.ti.com Summing Two Single-Ended Input Signals Four resistors and three capacitors are needed for summing single-ended input signals. The gain and corner frequencies (fc1 and fc2) for each input source can be set independently (see Equation 11 through Equation 14, and Figure 32).
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TPA2006D1 www.ti.com ................................................................................................................................................. SLOS498A – SEPTEMBER 2006 – REVISED JULY 2008 EFFICIENCY AND THERMAL INFORMATION The maximum ambient temperature depends on the heat-sinking ability of the PCB system. The derating factor for the DRB package is shown in the dissipation rating table. Converting this to θJA: 1 1 o qJA = = 0.0218 = 45.9 C/W Derating Factor (17) Given θJA of 45.
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TPA2006D1 SLOS498A – SEPTEMBER 2006 – REVISED JULY 2008 ................................................................................................................................................. www.ti.com TPA2006D1 Modulation Scheme The TPA2006D1 uses a modulation scheme that still has each output switching from 0 to the supply voltage. However, OUT+ and OUT- are now in phase with each other with no input. The duty cycle of OUT+ is greater than 50% and OUT- is less than 50% for positive voltages.
PAGE 17
TPA2006D1 www.ti.com ................................................................................................................................................. SLOS498A – SEPTEMBER 2006 – REVISED JULY 2008 Effects of Applying a Square Wave Into a Speaker If the amplitude of a square wave is high enough and the frequency of the square wave is within the bandwidth of the speaker, a square wave could cause the voice coil to jump out of the air gap and/or scar the voice coil.
PAGE 18
TPA2006D1 SLOS498A – SEPTEMBER 2006 – REVISED JULY 2008 ................................................................................................................................................. www.ti.com When to Use an Output Filter Design the TPA2006D1 without an output filter if the traces from amplifier to speaker are short. The TPA2006D1 passed FCC and CE radiated emissions with no shielding with speaker trace wires 100 mm long or less.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 18-Oct-2013 Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant TPA2006D1DRBR SON DRB 8 3000 330.0 12.4 3.3 3.3 1.1 8.0 12.0 Q2 TPA2006D1DRBT SON DRB 8 250 180.0 12.4 3.3 3.3 1.1 8.0 12.
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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) TPA2006D1DRBR SON DRB 8 3000 367.0 367.0 35.0 TPA2006D1DRBT SON DRB 8 250 210.0 185.0 35.
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