Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Audio amplifier 2-channel (stereo) Class D QFN 20 (4x4)

FEATURES DESCRIPTION

APPLICATIONS

SIMPLIFIED APPLICATION DIAGRAM

AVdd

INL-

INL+

AGND PGND

OUTL+

OUTL-

PVddR

10 Fm

ToBattery

AGC2

INR-

INR+

C 1 F

OUTR+

OUTR-

AGC1

Enable1

Enable2

MasterShutdown

TPA2017D2

(optional)

Digital

BaseBand

Analog

Baseband

CODEC

PVddL

TPA2017D2

www.ti.com

..................................................................................................................................................................................................... SLOS584 – APRIL 2009

2.8-W/Ch Stereo Class-D Audio Amplifier with SmartGain

Dynamic Range Compression

and AGC

• Filter-Free Class-D Architecture

The TPA2017D2 (sometimes referred to as

TPA2017) is a stereo, filter-free Class-D audio power

• 3 SmartGain

functions

amplifier with SmartGain

dynamic range

– AGC DRC Function

compression (DRC), automatic gain control (AGC),

– AGC Limiter Function

and noise gate. It is available in a 4 mm x 4mm QFN

– AGC Noise Gate Function package.

• 1.7 W/Ch Into 8 Ω at 5 V (10% THD+N)

SmartGain

functions are configured to

automatically prevent distortion of the audio signal

• 750 mW/Ch Into 8 Ω at 3.6 V (10% THD+N)

and enhance quiet passages that are normally not

• 2.8 W/Ch Into 4 Ω at 5 V (10% THD+N)

heard. SmartGain

is a combined AGC DRC and

• 1.5 W/Ch Into 4 Ω at 3.6 V (10% THD+N)

Limiter that protects the speaker from damage at high

• Power Supply Range: 2.5 V to 5.5 V power levels and compress the dynamic range of

voice or music to fit within the dynamic range of the

• Low Supply Current: 3.5 mA

speaker. SmartGain

DRC, limiter, and noise gate

• Low Shutdown Current: 0.2 µ A

functions can be enabled or disabled. The

• High PSRR: 75 dB at 217 Hz

TPA2017D2 (TPA2017) is capable of driving 1.7

W/Ch at 4 V or 750mW/Ch at 3.6 V into 8 Ω load or

• Fast Start-up Time: 5 ms

2.8 W/Ch at 5 V or 1.5 W/Ch at 3.6 V into 4 Ω . The

• Short-Circuit and Thermal Protection

device features an enable pin and also provides

• Space-Saving Package

thermal and short circuit protection.

– 4 mm × 4 mm QFN (RTJ)

In addition to these features, a fast start-up time and

small package size make the TPA2017D2 (TPA2017)

an ideal choice for Notebook PCs, PDAs and other

portable applications.

• Wireless or Cellular Handsets and PDAs

• Portable Navigation Devices

• Portable DVD Player

• Notebook PCs

• Portable Radio

• Portable Games

• Educational Toys

• USB 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 (21 pages)

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TPA2017D2 www.ti.com ..................................................................................................................................................................................................... SLOS584 – APRIL 2009 2.8-W/Ch Stereo Class-D Audio Amplifier with SmartGainTM Dynamic Range Compression and AGC FEATURES 1 • • • • • • • • • • • • • Filter-Free Class-D Architecture 3 SmartGainTM functions – AGC DRC Function – AGC Limiter Function – AGC Noise Gate Function 1.
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TPA2017D2 SLOS584 – APRIL 2009 ..................................................................................................................................................................................................... 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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TPA2017D2 www.ti.com .....................................................................................................................................................................................................
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TPA2017D2 SLOS584 – APRIL 2009 ..................................................................................................................................................................................................... www.ti.
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TPA2017D2 www.ti.com ..................................................................................................................................................................................................... SLOS584 – APRIL 2009 OPERATING CHARACTERISTICS at TA = 25°C, VDD = 3.6V, EN = 1.3 V, RL = 8 Ω +33 µH, and AV = 6 dB (unless otherwise noted). PARAMETER TEST CONDITIONS kSVR VDD = 3.
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TPA2017D2 SLOS584 – APRIL 2009 ..................................................................................................................................................................................................... www.ti.com TYPICAL CHARACTERISTICS with C(DECOUPLE) = 1 µF, CI = 1 µF, AGC1 = AGC2 = 0 V. All THD + N graphs are taken with outputs out of phase (unless otherwise noted). All data is taken on left channel.
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TPA2017D2 www.ti.com ..................................................................................................................................................................................................... SLOS584 – APRIL 2009 TOTAL HARMONIC DISTORTION + NOISE vs FREQUENCY 4.0 fIN = 1 kHz Gain = 6 dB 3.0 THD = 1%, 4 Ω 2.5 THD = 10%, 4 Ω 1.5 1.0 THD = 10%, 8 Ω 0.5 THD = 1%, 8 Ω 0.0 2.5 3.0 3.5 4.0 4.5 5.0 5.
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TPA2017D2 SLOS584 – APRIL 2009 ..................................................................................................................................................................................................... www.ti.com EFFICIENCY vs OUTPUT POWER (PER CHANNEL) 100 100 90 90 80 80 VDD = 3.6 V 70 VDD = 5 V VDD = 2.5 V 60 Efficiency − % Efficiency − % EFFICIENCY vs OUTPUT POWER (PER CHANNEL) 50 40 fIN = 1 kHz Gain = 6 dB RL = 8 Ω + 33 µH 20 10 0 0.0 0.5 1.0 1.
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TPA2017D2 www.ti.com ..................................................................................................................................................................................................... SLOS584 – APRIL 2009 CROSSTALK vs FREQUENCY 0 0 −10 −20 Gain = 6 dB RL = 8 Ω + 33 µH POUT = 100 mW VDD = 3.6 V −20 −40 −30 Crosstalk − dB PSRR − Power Supply Rejection Ratio − dB POWER SUPPLY REJECTION RATIO vs FREQUENCY −40 −50 VDD = 2.5 V −60 VDD = 3.
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TPA2017D2 SLOS584 – APRIL 2009 ..................................................................................................................................................................................................... www.ti.com APPLICATION INFORMATION AUTOMATIC GAIN CONTROL The Automatic Gain Control (AGC) feature provides continuous automatic gain adjustment to the amplifier through an internal PGA.
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TPA2017D2 www.ti.com ..................................................................................................................................................................................................... SLOS584 – APRIL 2009 Gain - dB Since the number of gain steps is limited the compression region is limited as well. The following figure shows how the gain changes vs. the input signal amplitude in the compression region. VIN - dBV Figure 20.
PAGE 12
TPA2017D2 SLOS584 – APRIL 2009 ..................................................................................................................................................................................................... www.ti.com DECOUPLING CAPACITOR (CS) The TPA2017D2 is a high-performance Class-D audio amplifier that requires adequate power supply decoupling to ensure the efficiency is high and total harmonic distortion (THD) is low.
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TPA2017D2 www.ti.com ..................................................................................................................................................................................................... SLOS584 – APRIL 2009 FILTER FREE OPERATION AND FERRITE BEAD FILTERS A ferrite bead filter can often be used if the design is failing radiated emissions without an LC filter and the frequency sensitive circuit is greater than 1 MHz.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 18-Oct-2013 In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
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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 TPA2017D2RTJR QFN RTJ 20 3000 330.0 12.4 4.3 4.3 1.1 8.0 12.0 Q2 TPA2017D2RTJR QFN RTJ 20 3000 330.0 12.4 4.25 4.25 1.15 8.0 12.0 Q2 TPA2017D2RTJT QFN RTJ 20 250 180.0 12.4 4.25 4.25 1.15 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) TPA2017D2RTJR QFN RTJ 20 3000 370.0 355.0 55.0 TPA2017D2RTJR QFN RTJ 20 3000 367.0 367.0 35.0 TPA2017D2RTJT QFN RTJ 20 250 210.0 185.0 35.0 TPA2017D2RTJT QFN RTJ 20 250 195.0 200.0 45.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.