Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Audio amplifier 1-channel (mono) Class AB SON 8 (3x3)

ZQV

DRB

DGN

FEATURESAPPLICATIONS

DESCRIPTION

APPLICATIONCIRCUIT

Actual SolutionSize

6,9mm

5,25mm

(1)

O+

O-

GND

ToBattery

Bias

Circuitry

IN-

IN+

InFrom

DAC

SHUTDOWN

AppliestotheZQVPackagesOnly

( )

BYPASS

(Optional)

TPA6205A1

www.ti.com

..............................................................................................................................................................SLOS490B–JULY2006–REVISEDJUNE2008

1.25-WMONOFULLYDIFFERENTIALAUDIOPOWERAMPLIFIERWITH1.8-VINPUT

LOGICTHRESHOLDS

•DesignedforWirelessHandsets,PDAs,and

•1.25WInto8ΩFroma5-VSupplyat

othermobiledevices

THD=1%(Typical)

•CompatiblewithLowPower(1.8VLogic)I/O

•ShutdownPinhas1.8VCompatible

Thresholdcontrolsignals

Thresholds

•LowSupplyCurrent:1.7mATypical

•ShutdownCurrent<10µA

TheTPA6205A1isa1.25-Wmonofullydifferential

•OnlyFiveExternalComponents

amplifierdesignedtodriveaspeakerwithatleast

–ImprovedPSRR(90dB)andWideSupply

8-Ωimpedancewhileconsuminglessthan37mm

Voltage(2.5Vto5.5V)forDirectBattery

(ZQVpackageoption)totalprinted-circuitboard

(PCB)areainmostapplications.Thisdeviceoperates

Operation

from2.5Vto5.5V,drawingonly1.7mAofquiescent

–FullyDifferentialDesignReducesRF

supplycurrent.TheTPA6205A1isavailableinthe

Rectification

space-saving2mmx2mmMicroStarJunior™BGA

–ImprovedCMRREliminatesTwoInput

package,andthespacesaving3mmx3mmQFN

CouplingCapacitors

(DRB)package.

–C

(BYPASS)

IsOptionalDuetoFully

Featureslike85-dBPSRRfrom90Hzto5kHz,

DifferentialDesignandHighPSRR

improvedRF-rectificationimmunity,andsmallPCB

areamakestheTPA6205A1idealforwireless

•Availablein3mmx3mmQFNPackage(DRB)

handsets.Afaststart-uptimeof4µswithminimal

•Availableinan8-PinPowerPAD™MSOP

popmakestheTPA6205A1idealforPDA

(DGN)

applications.

•Avaliableina2mmx2mmMicroStarJunior™

BGAPackage(ZQV)

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas

Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

2PowerPAD,MicroStarJunioraretrademarksofTexasInstruments.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Summary of content (28 pages)

PAGE 1
ZQV DRB TPA6205A1 DGN www.ti.com .............................................................................................................................................................. SLOS490B – JULY 2006 – REVISED JUNE 2008 1.25-W MONO FULLY DIFFERENTIAL AUDIO POWER AMPLIFIER WITH 1.8-V INPUT LOGIC THRESHOLDS FEATURES APPLICATIONS 1 • • 1.25 W Into 8Ω From a 5-V Supply at THD = 1% (Typical) • Shutdown Pin has 1.8V Compatible Thresholds • Low Supply Current: 1.
PAGE 2
TPA6205A1 SLOS490B – JULY 2006 – REVISED JUNE 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.
PAGE 3
TPA6205A1 www.ti.com .............................................................................................................................................................. SLOS490B – JULY 2006 – REVISED JUNE 2008 ELECTRICAL CHARACTERISTICS TA = 25°C, Gain = 1 V/V PARAMETER TEST CONDITIONS |VOO| Output offset voltage (measured differentially) PSRR Power supply rejection ratio CMRR Common-mode rejection ratio VOL Low-level output voltage MIN VI = 0 V, VDD = 2.5 V to 5.
PAGE 4
TPA6205A1 SLOS490B – JULY 2006 – REVISED JUNE 2008 .............................................................................................................................................................. www.ti.
PAGE 5
TPA6205A1 www.ti.com ..............................................................................................................................................................
PAGE 6
TPA6205A1 SLOS490B – JULY 2006 – REVISED JUNE 2008 .............................................................................................................................................................. www.ti.com TYPICAL CHARACTERISTICS OUTPUT POWER vs SUPPLY VOLTAGE OUTPUT POWER vs LOAD RESISTANCE 1.8 THD+N = 10% 1 0.8 0.6 THD+N = 1% 0.4 0.4 0 0 3.5 4 4.5 5 VDD = 2.5 V 0.6 0.2 3 VDD = 3.6 V 0.8 0.2 2.5 0.8 VDD = 2.5 V 0.6 0.
PAGE 7
TPA6205A1 www.ti.com .............................................................................................................................................................. SLOS490B – JULY 2006 – REVISED JUNE 2008 TYPICAL CHARACTERISTICS (continued) 1 0.5 25 mW 0.2 0.1 125 mW 0.05 0.02 500 mW 0.01 0.005 0.002 0.001 20 50 100 200 500 1 k 2 k f - Frequency - Hz 5 k 10 k 20 k 10 5 VDD = 2.5 V CI = 2 µF RL = 8 Ω C(Bypass) = 0 to 1 µF Gain = 1 V/V 2 1 0.5 15 mW 0.2 0.1 75 mW 0.05 0.
PAGE 8
TPA6205A1 SLOS490B – JULY 2006 – REVISED JUNE 2008 .............................................................................................................................................................. www.ti.com TYPICAL CHARACTERISTICS (continued) GSM POWER SUPPLY REJECTION vs FREQUENCY 0 C1 Frequency 217.41 Hz -50 C1 - Duty 20 % -100 C1 Pk-Pk 504 mV VO 2 ms/div -150 VDD Shown in Figure 19 CI = 2 µF, C(Bypass) = 0.47 µF, Inputs ac-Grounded Gain = 1V/V -50 -100 -150 0 200 400 600 800 1k 1.
PAGE 9
TPA6205A1 www.ti.com .............................................................................................................................................................. SLOS490B – JULY 2006 – REVISED JUNE 2008 APPLICATION INFORMATION FULLY DIFFERENTIAL AMPLIFIER The TPA6205A1 is a fully differential amplifier with differential inputs and outputs. The fully differential amplifier consists of a differential amplifier and a common- mode amplifier.
PAGE 10
TPA6205A1 SLOS490B – JULY 2006 – REVISED JUNE 2008 .............................................................................................................................................................. www.ti.com VDD RF CI IN + RI IN- RI IN+ CI To Battery Cs _ VO+ VO- + RF GND SHUTDOWN Bias Circuitry C(BYPASS) (Optional) Figure 28.
PAGE 11
TPA6205A1 www.ti.com .............................................................................................................................................................. SLOS490B – JULY 2006 – REVISED JUNE 2008 CI2 Single Ended Input 2 CI1 Single Ended Input 1 RI2 RI1 IN- RP CP VDD RF IN+ To Battery Cs _ VO+ VO- + RF GND SHUTDOWN Bias Circuitry C(BYPASS) (Optional) Figure 31.
PAGE 12
TPA6205A1 SLOS490B – JULY 2006 – REVISED JUNE 2008 .............................................................................................................................................................. www.ti.com (RI, CI) and the feedback resistor (RF) to the load. This leakage current creates a dc offset voltage at the input to the amplifier that reduces useful headroom, especially in high gain applications. For this reason, a ceramic capacitor is the best choice.
PAGE 13
TPA6205A1 www.ti.com .............................................................................................................................................................. SLOS490B – JULY 2006 – REVISED JUNE 2008 V V (rms) + V Power + eliminates the need for the blocking capacitors. Low-frequency performance is then limited only by the input network and speaker response. Cost and PCB space are also minimized by eliminating the bulky coupling capacitor.
PAGE 14
TPA6205A1 SLOS490B – JULY 2006 – REVISED JUNE 2008 .............................................................................................................................................................. www.ti.com An easy-to-use equation to calculate efficiency starts out as being equal to the ratio of power from the power supply to the power delivered to the load.
PAGE 15
TPA6205A1 www.ti.com .............................................................................................................................................................. SLOS490B – JULY 2006 – REVISED JUNE 2008 Therefore, p h BTL + Ǹ2 PL RL 4V DD (11) Table 2. Efficiency and Maximum Ambient Temperature vs Output Power in 5-V 8-Ω BTL Systems Output Power (W) Efficiency (%) Internal Dissipation (W) Power From Supply (W) Max Ambient Temperature (°C) 0.25 31.4 0.55 0.75 62 0.50 44.
PAGE 16
TPA6205A1 SLOS490B – JULY 2006 – REVISED JUNE 2008 .............................................................................................................................................................. www.ti.com 0.38 mm 0.25 mm 0.28 mm C1 B1 C2 B2 C3 B3 A1 VIAS to Ground Plane A3 Solder Mask Paste Mask (Stencil) Copper Trace Figure 35.
PAGE 17
PACKAGE OPTION ADDENDUM www.ti.
PAGE 18
PACKAGE OPTION ADDENDUM www.ti.com 18-Oct-2013 Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.
PAGE 19
PACKAGE MATERIALS INFORMATION www.ti.com 8-Apr-2013 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 TPA6205A1DGNR MSOPPower PAD DGN 8 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 TPA6205A1DGNR MSOPPower PAD DGN 8 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 TPA6205A1DRBR SON DRB 8 3000 330.0 12.4 3.3 3.3 1.1 8.0 12.
PAGE 20
PACKAGE MATERIALS INFORMATION www.ti.com 8-Apr-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPA6205A1DGNR MSOP-PowerPAD DGN 8 2500 358.0 335.0 35.0 TPA6205A1DGNR MSOP-PowerPAD DGN 8 2500 364.0 364.0 27.0 TPA6205A1DRBR SON DRB 8 3000 367.0 367.0 35.0 TPA6205A1DRBT SON DRB 8 250 210.0 185.0 35.0 TPA6205A1ZQVR BGA MICROSTAR JUNIOR ZQV 8 2500 338.1 338.1 20.
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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.