D50 W RMS Power Into 6 Ω at 10% THD
D40 W RMS Power Into 6 Ω at 0.1% THD
DTHD+N < 0.09% Typical (1-kHz Input Signal)
D93-dB Dynamic Range (TDAA System)
DPower Efficiency > 90% Into 6-Ω and 8-Ω
Load
DLow Profile, SMD 32-Pin PowerPAD
Package
DSelf-Protecting Design
D3.3-V Digital Interface
DEMI Compliant When Used With
Recommended System Design
APPLICATIONS
DDVD Receiver
DHome Theater
DMini/Micro Component Systems
DInternet Music Appliance
DCar Audio Amplifiers and Head Units
TYPICAL TDAA STEREO AUDIO SYSTEM
DESCRIPTION
The TAS5110A is a high-performance true-digital audio
amplifier (TDAA) power stage, designed to drive 50 W per
channel. The TAS5110A incorporates TI’s Equibit and
PurePath Digital technology and is used in conjunction
with a digital audio PWM processor (TAS50xx) to deliver
high-power , true-digital audio amplification. The efficiency
of this digital amplifier can be greater than 90%, reducing
the size of both the power supplies and heat sinks needed.
The TAS5110A accepts a mono PWM 3.3-V input and
controls the switching of an internal CMOS H-bridge.
When used with the TAS50xx PWM processor, system
performance of less than 0.09% THD is attainable.
Overcurrent protection, overtemperature, and
undervoltage protections are built into the TAS5110A,
safeguarding the H-bridge and speakers against output
shorts, overvoltage conditions, and other fault conditions
that could damage the system.
Left
Digital Audio
• TAS3001
• DSP
• S/PDIF
• 1394
• Volume
• EQ
• DRC
• Bass
• Treble
Please be aware that an important notice concerning availability , standard warranty, and use in critical applications of TexasInstruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerP AD, PurePath Digital, and Equibit are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
• Serial Audio Input Port
• Internal PLL
• PWM Processor
TAS50xx
Right
TAS5110A
TAS5110A
• Two H-Bridge Power Devices
Copyright 2003, Texas Instruments Incorporated
L-C
Filter
L-C
Filter
TAS5110A
www.ti.com
SLES079A – APRIL 2003 – REVISED MA Y 2003
TERMINAL ASSIGNMENTS
The TAS51 10A is offered in a thermally enhanced 32-pin TSSOP surface-mount package (DAD). The DAD package
has the PowerPAD on top.
Figure 1. System #1: Stereo Configuration With a TAS3001 Digital Audio Processor
TAS30xx
• Digital Parametric EQ
• Volume
• DRC
• Bass
• Treble
• Serial Audio Input Port
• Internal PLL
TAS50xx
Left
Right
TAS5110A
TAS5110A
• Two H-Bridges
www.ti.com
L-C
Filter
L-C
Filter
Home Theater
DVD 6-Channel
Encoded Digital
Audio Source
6
TI DSP
• Dolby AC-3
• DTS
• Volume
• EQ
• DRC
• Bass
• Treble
TAS50xx
TAS50xx
TAS50xx
CH1
CH2
CH3
CH4
CH5
CH6
TAS5110A
TAS5110A
TAS5110A
TAS5110A
TAS5110A
TAS5110A
L-C
Filter
L-C
Filter
L-C
Filter
L-C
Filter
L-C
Filter
L-C
Filter
Left
Right
Surround Left
Surround Right
Center
Subwoofer
Figure 2. System #2: 6-Channel Audio Playback
4
TAS5110A
www.ti.com
SLES079A – APRIL 2003 – REVISED MAY 2003
Terminal Functions
TERMINAL
NAMEDAD
NO.
BIAS_A6IConnect external resistor to DVSS.
BIAS_B5IConnect external resistor to DVSS.
BOOTSTRAPA19OBootstrap capacitor pin for H-bridge A
BOOTSTRAPB30OBootstrap capacitor pin for H-bridge B
DVDD11—3.3-V digital voltage supply for logic
DVSS8, 9,10—Digital ground for logic is internally connected to PVSS. All three pins must be tied together but not
ERR114OError/warning report indicator . This output is open drain with internal pullup resistor .
ERR013OError/warning report indicator . This output is open drain with internal pullup resistor .
LDROUTA18OLow-voltage drop-out regulator output A (not to be used to supply current to external circuitry)
LDROUTB31OLow-voltage drop-out regulator output B (not to be used to supply current to external circuitry)
OUTPUTA22, 23OH-bridge output A
OUTPUTB26, 27OH-bridge output B
PVDDA120, 21—High-voltage power supply, H-bridge A
PVDDA217—High-voltage power supply for low-dropout voltage regulator A-side
PVDDB128, 29—High-voltage power supply, H-bridge B
PVDDB232—High-voltage power supply for low-dropout voltage regulator B-side
PVSS24, 25—High-voltage power supply ground
PWDN4IPower down = 0, normal mode = 1
PWM_AM15IPWM input A(–)
PWM_AP16IPWM input A(+)
PWM_BP1IPWM input B(+)
PWM_BM2IPWM input B(–)
RESET3IReset and mute mode = 0, normal mode = 1; when in reset mode, H-bridge MOSFETs are in low-low
SHUTDOWN12ODevice is in shutdown due to fault condition, normal mode = 1, shutdown = 0; when device is in
VRFILT7OA filter capacitor must be added between the VRFILT and DVSS pins.
NOTE:
The four PWM inputs: PWM_AP, PWM_AM, PWM_BP, and PWM_BM must always be connected to the TAS50xx output pins and never
left floating. Floating PWM input pins cause an illegal PWM input state signal to be asserted.
Dual pins: OUTPUTA, OUTPUTB, PVDDA1, and PVDDB1 must have both pins connected externally to the same point on the circuit board,
respectively . Both PVSS pins must also be connected together externally. These multiple pins are for the high-current DMOS output devices.
Failure to connect all the multiple pins to the same respective node results in excessive current flow in the internal bond wires and can cause
the device to fail. All electrical characteristics are specified and measured with all of the multiple pins of each type connected to a single node.
I/ODESCRIPTION
connected externally to PVSS. See Figure 5.
output state. Asserting the RESET signal low causes all fault conditions to be cleared.
shutdown mode the H-bridge MOSFETs are in low-low output state. The latched output can be
cleared by asserting the RESET signal. This output is open drain with internal pullup resistor.
5
TAS5110A
www.ti.com
SLES079A – APRIL 2003 – REVISED MAY 2003
FUNCTIONAL DESCRIPTION
PWM H-Bridge State Control
The digital interface control signals consists of PWM_AP, PWM_AM, PWM_BP, and PWM_BM. These signals are
a complementary differential signal format for the A-side half-bridge and the B-side half-bridge.
Bootstrapped Gate Drive
The TAS5110A includes two dedicated bootstrapped power supplies. A bootstrap capacitor is connected between
the individual bootstrap pin and the associated output. For example, a capacitor is connected between the
BOOTSTRAPA pin and the OUTPUT A pin and another capacitor is connected between the BOOTSTRAPB pin and
the OUTPUTB pin. The bootstrap power supply minimizes the number of high voltage power supply levels externally
supplied to the system, while providing a low-noise supply level for driving the high-side N-channel DMOS transistors.
Low-Dropout Voltage Regulator
Two on-chip low-dropout voltage regulators (LDO) are provided to minimize the number of external power supplies
needed for the system. These voltage regulators are for internal circuits only and cannot be used for external circuitry .
Each LDO is dedicated to a half-bridge and its gate driver. An LDO output capacitor is connected between the
individual LDO output pin and the associated output return. For example, a capacitor is connected between the
LDROUTA pin and the PVSS pin and another capacitor is connected between the LDROUTB pin and the PVSS pin.
High-Current H-bridge Output Stage
The positive outputs of the H-bridge are the two OUTPUT A pins. The negative outputs of the H-bridge are the two
OUTPUTB pins. The logic for the input command to H-bridge outputs is described in the H-bridge output mapping
section immediately following. When the T AS5110A is in the normal mode, as seen in the H-bridge output mapping
tables, the outputs are decoded from the inputs. However, the TAS5110A is immediately shut down if any of the
following error conditions occur: overcurrent, overtemperature, low regulator output voltage, or an illegal PWM input
state is applied. For these conditions, the outputs are set to the appropriate disabled state as specified in the H-bridge
output mapping section, and the SHUTDOWN pin is set low.
H-Bridge Output Mapping
The A-side half-bridge output is designed to the following truth table:
INPUTSOUTPUTS
RESETPWDNPWM_APPWM_AMSHUTDOWNOUTPUTA
XXXX00 or Hi-Z
X0XX1Hi-ZPower down
01XX10Reset
110000Shutdown
110110Normal
111011Normal
111100Shutdown
(1)
Output is 0 for low voltage, overtemperature, and illegal input. Hi-Z is for overcurrent.
(1)
DESCRIPTION
Shutdown
The B-side half-bridge output is designed to the following truth table:
INPUTSOUTPUTS
RESETPWDN PWM_BP PWM_BM SHUTDOWNOUTPUTB
XXXX00 or Hi-Z
X0XX1Hi-ZPower down
01XX10Reset
110000Shutdown
110110Normal
111011Normal
111100Shutdown
(1)
Output is 0 for low voltage, overtemperature, or illegal input. Hi-Z is for overcurrent.
(1)
DESCRIPTION
Shutdown
6
www.ti.com
Control/Sense Circuitry
TAS5110A
SLES079A – APRIL 2003 – REVISED MAY 2003
The control/sense circuitry consists of the following 3.3-V logic level pins: PWDN
, RESET, ERR0, ERR1, and
SHUTDOWN. The active-low PWDN input pin powers down all internal circuitry and forces the H-bridge outputs to
the Hi-Z state. When the PWDN pin is low, the open drain ERR0, ERR1, and SHUTDOWN pins are also disabled
so that their outputs can be pulled high. The active-low RESET input pin forces the H-bridge outputs to the low-low
state and resets the overcurrent shutdown latch. The PWDN pin overrides the RESET pin. The ERR0, ERR1, and
SHUTDOWN outputs indicate the following conditions in the TAS51 10A as shown in the following table. These three
outputs are open-drain connections with internal pullup resistors so that wire-ORed connections can be made by the
user with other external control devices. The short-circuit protect error condition latches the TAS5110A in this
shutdown state and forces the H-bridge outputs to the Hi-Z state until the device is reset by means of the RESET
pin. The illegal PWM input state, overtemperature, and low regulator voltage error conditions does not latch the
device in the shutdown condition. Instead the H-bridge outputs are forced to the low-low state and the TAS5110A
returns to normal operation as soon as the error condition ends. Loss of clocking PWM signal is also considered an
illegal PWM input state.
SHUTDOWNERR1ERR0FUNCTIONOUTPUTAOUTPUTB
000Illegal PWM input stateLowLow
001Short circuit protect (latch)Hi-ZHi-Z
010Over temperature protectLowLow
011Low regulator voltage protectLowLow
100Reserved——
101Reserved——
110High temperature – warningNormalNormal
111Normal operationNormalNormal
7
TAS5110A
www.ti.com
SLES079A – APRIL 2003 – REVISED MAY 2003
DEVICE OPERATION
Power Sequences
System Power-up/Power-down Sequencing
The recommended power-up/power-down sequence is shown in Figure 3. For proper operation the RESET signal
should be kept low when both DVDD and output power (PVDDA1, PVDDA2, PVDDB1, and PVDDB2) are being
applied. The RESET signal should remain low for at least 1 ms after output power is applied.
(1)
DVDD
PWDN
≥ 1 ms
PVDDA2
PVDDB2
u 100 µs
PVDDA1
PVDDB1
u 100 µs
RESET
u 1 ms
(1)
For most applications, it is recommended that the PWDN pin be connected directly to the DVDD pin.
Figure 3. Power-Up/Power-Down Sequence
RESET Function
The device is put into a reset condition when the (active low) RESET signal is asserted. While in the reset state, the
input H-bridge control signals consisting of PWM_AP, PWM_AM, PWM_BP, and PWM_BM are ignored, and the
H-bridge MOSFET s are placed in a state where OUTPUT A and OUTPUTB are both low. Asserting the RESET signal
low also causes the short circuit protection latch to be reset. The RESET signal is normally connected to the V ALID
signal from the TAS50xx.
Reinitialization Sequence
Proper initial conditions for this device include asserting the RESET signal until the reset operation has completed
(1 ms). Additionally, when using this device with the TAS50xx controller, this function can be accomplished by
asserting the reset pin on the TAS50xx during the reset sequence (see Figure 3).
Audio Application Considerations
Optimal Power Transfer For H-Bridge
The TAS5110A is a power H-bridge that is designed to deliver a maximum of 50 W RMS into a 6-Ω load. In order
to achieve 50 W into 6 Ω, the system designer must provide an adequate thermal design. See the ThermalMethodology for the 32-Pin DAD Package 50 W, 6-Ω Test section for a discussion of possible thermal solutions.
Careful attention must be given to the value of the high-voltage power supply level for a given load resistance. See
recommended operating conditions. See the Maximum Available Power at Common Load Impedances for DADPackages section.
reconstruction output filter
An output reconstruction filter is required between the H-bridge outputs and the loudspeaker load. This second-order
low-pass filter passes the audio information to the loudspeaker, while filtering out the high-frequency out-of-band
information contained in the H-bridge output PWM pulses. The values of the L and C components selected are
dependent on the loudspeaker load impedance.
8
TAS5110A
DC su ly voltage range
www.ti.com
SLES079A – APRIL 2003 – REVISED MAY 2003
Fault Indicator Usage
The TAS5110A is a self-protecting device that provides device fault reporting, including overtemperature protect,
undervoltage lockout (low regulator voltage), and short-circuit protection. The short circuit protection protects against
short circuits that may occur at the loudspeaker load when configured. The T AS5110A is not recommended for driving
loads less than 6 Ω, because the internal current limit protection might be activated.
An undervoltage lockout signal occurs when an insufficient voltage level is present on the LDROUTA or LDROUTB
pins. During this condition, gate drive levels are not sufficient for driving the power MOSFET s. Normal operation is
resumed when the minimum proper LDROUT A or LDROUTB level is obtained and the low regulator voltage protect
signal is de-asserted. See the control/sense circuitry section for error and warning conditions.
A high-temperature warning signal is asserted on pin ERR0
when the device temperature exceeds 125°C typical.
If the internal device temperature exceeds 150°C typical, the overtemperature protect signal is asserted and the
TAS51 10A is shut down. The device re-enables once the temperature drops to 125 °C typical. See the control/sensecircuitry section for error and warning conditions.
Detection of an illegal PWM input state or the loss of a clocking PWM input signal causes an illegal PWM input state
signal to be asserted on the ERR1and ERR0 pins and sets the SHUTDOWN pin to the low state.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range unless otherwise noted
DVDD to DVSS–0.3 V to 4.2 V
PWM_AP, PWM_AM, PWM_BP , PWM_BM–0.3 V to DVDD + 0.3 V
DC supply voltage range
Output DMOS drain-to-source breakdown voltage28 V
Operating junction temperature range, T
Storage temperature range, T
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds)260°C
(1)
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
RESET, PWDN–0.3 V to DVDD + 0.3 V
PVDDA1 to PVSS, PVDDB1 to PVSS–0.3 V to 28 V
PVDDA2 to PVSS, PVDDB2 to PVSS0.3 V to 27 V
J
stg
(1)
UNIT
–40°C to 150°C
–65°C to 150°C
9
TAS5110A
yg
LOAD IMPEDANCE
PVDAA1/PVDDB1
APPROXIMATE MAXIMUM
THD+N AT MAXIMUM POWER
SLES079A – APRIL 2003 – REVISED MAY 2003
RECOMMENDED OPERATING CONDITIONS
(maximum output power = 50 W (RMS), TJ = 25°C)
www.ti.com
Thermal Data
T
J(SD)
T
J(W)
T
C
(2)
R
θJC
(2)
R
θJA
(1)
One of the most influential components on the thermal performance of a package is board design. In order to take full advantage of the heat
dissipating abilities of the PowerPAD packages, a board must be used that acts similar to a heat sink and allows for the use of the exposed (and
solderable), deep downset pad. See Appendix A of the PowerP AD Thermally Enhanced Package technical brief, TI literature number SLMA002.
Connect LDROUT A to PVDDA2 and connect LDROUTB to PVDDB2. Under this condition, the H-bridge forward on-state resistance is increased.
This increases internal power dissipation. Maximum output power may need to be reduced to meet thermal conditions.
Regulator
PVDDB2 to PVSS16.52226.5
PVDDA2 to PVSS
PVDDB2 to PVSS
(1)
(1)
10.516.5
10.516.5
V
Maximum Available Power at Common Load Impedances for the DAD Package Unclipped (0 dB) Level
(Ω)
62750< 10%
62743< 0.09%
82734< 0.09%
(1)
Dependent on board design and component selection
(2)
T est conditions are described in the Thermal Methodology for the 32-Pin DAD Package 50 W , 6-Ω Test.
OUTPUT A and OUTPUTB to PVSS
Forward on-state resistance, high-side drivers
PVDDA1 to OUTPUT A, PVDDB1 to OUTPUTB
On-state resistance matching, low-side drivers98%
On-state resistance matching, high-side drivers98%
(1)
T est time should be < 1 ms to minimize temperature change
(2)
These parameters are measured with voltage-sensing contacts separate from the current-carrying contacts.
(3)
Connect PVDDA2 and PVDDB2 to a 22-V power supply with respect to PVSS. LDROUT A, LDROUTB, BOOTSTRAP A, and BOOTSTRAPB pins
open.
(4)
Connect PVDDA2 to 22-V power supply with respect to PVSS. LDROUTA, LDROUTB, BOOTSTRAPA, and BOOTSTRAPB capacitors are
connected, respectively. Clock PWM inputs to allow bootstrap capacitors to charge. 93–99% modulation must be used on PWM_AP , PWM_AM,
PWM_BP , and PWM_BM inputs to prevent the activity detector from shutting down the device during this measurement. Note that FS = 384 kHz.
Electrical Characteristics, Voltage Regulator, TJ = 25°C (unless otherwise noted)
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
Output voltage (LDROUTA, LDROUTB)
(1)
These voltage regulators are for internal gate drive circuits only and are not to be used under any circumstances to supply current to external
circuity.
IO = 5 mA, PVDDA2=PVDDB2 =18 V to 27 V,
See Note 1, DVDD = 3.3 V
Traditionally, surface mount and power have been mutually exclusive terms. A variety of scaled-down TO-220 type
packages have leads formed as gull wings to make them applicable for surface-mount applications. These packages,
however, have two shortcomings: they do not address the low profile requirements (<2 mm) of many of today’s
advanced systems, and they do not offer a terminal count that is high enough to accommodate increasing integration.
On the other hand, traditional low-power surface-mount packages require power-dissipation derating that severely
limits the usable range of many high-performance analog circuits.
The PowerP AD package (thermally enhanced HTSSOP) combines fine-pitch surface-mount technology with thermal
performance comparable to much larger power packages.
The PowerPAD package is designed to optimize the heat transfer to the PCB. Because of the very small size and
limited mass of a HTSSOP package, thermal enhancement is achieved by improving the thermal conduction paths
that remove heat from the component. The thermal pad is formed using a patented lead-frame design and
manufacturing technique to provide a direct connection to the heat-generating IC. When this pad is soldered or
otherwise thermally coupled to an external heat dissipater, high power dissipation in the ultrathin, fine-pitch,
surface-mount package can be reliably achieved. See the dissipation derating table.
DAD Package
Thermal
Pad
Top V iew DAD
DIE
End View DAD
Figure 6. View of Thermally Enhanced DAD Package
13
TAS5110A
www.ti.com
SLES079A – APRIL 2003 – REVISED MAY 2003
Thermal Methodology for the 32-Pin DAD Package 50 W, 6-Ω Test
The thermal test for the DAD part (e.g., thermal pad oriented away from the board) was conducted as shown in
Figure 7 and Figure 8. The cooling approach was to attach a heat sink to the thermal pad and conduct the heat to
ambient air.
Since the approach was to use a chassis below the board, it was inverted and a spacer bar used to connect the pads
thermally to the heat sink. The bar was made high enough that the components on the board were clear of the chassis.
The pad-to-spacer thermal resistance was about 3.2°C/W with the thermal compound indicated.
The chassis provided the only heat sink to air and was chosen as representative of a possible cooling approach. A
closed plastic top and insulating front and back panels ensured that only the bottom and sides of the U shaped chassis
contributed to cooling. The chassis was spaced 0.25 inch from the table to simulate a normal chassis configuration.
The thermal pad does not need to be isolated from ground. (Any heat sink with a thermal resistance to air of 3.9°C/W
or lower also works.) In this test, the exposed chassis reached long-term equilibrium temperatures above 50°C, so
the approach would have to be modified for touch temperature consideration. The chassis temperature after 10
minutes of 50 W into 6 Ω was below 50°C.
The test ran for three hours with 2 × 50 W RMS at 1 kHz into a 6-Ω resistive load at an ambient lab temperature of
23°C. No audio or thermal problems were encountered during that time.
Plastic Top Cover
Insulating
Front Panel
32 DAD Package
Wakefield T ype 126
Thermal Compound
(3.2°C/W)
Aluminum Space Bar
(1/4 in. Thick)
(2.44°C/W)
Wakefield T ype 126
Thermal Compound
(0.169°C/W)
Stereo Amplifier Board
1.25 in.
Aluminum Chassis 7.2 in. × 1 in. × 0.1 in. Thick.
Sides of U-Shaped Chassis Are 1.25 in. High
(3.9°C/W).
Figure 7. 32-Pin DAD Package Cross-Sectional View (Side)
Insulating
Back Panel
14
www.ti.com
TAS5110A
SLES079A – APRIL 2003 – REVISED MAY 2003
Plastic Top and Insulating
Front and Back Panels
Stereo Amplifier Board
1.25 in.
Aluminum Space Bar (1/4 in. Thick)
Aluminum Chassis 7.2 in. × 1 in. × 0.1 in. Thick. Sides of
U-Shaped Chassis Are 1.25 in. High (3.9°C/W).
Figure 8. 32-Pin DAD Package Cross-Sectional View (Front)
32 DAD Packages
(1.6°C/W)
Wakefield T ype 126
Thermal Compound
(3.2°C/W)
(2.44°C/W)
2.33 in.
4-40 Machine Screws With
Star Washers
1 mm
Wakefield T ype 126
Thermal Compound
(0.169°C/W)
15
IMPORTANT NOTICE
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,
enhancements, improvements, and other changes to its products and services at any time and to discontinue
any product or service without notice. Customers should obtain the latest relevant information before placing
orders and should verify that such information is current and complete. All products are sold subject to TI’s terms
and conditions of sale supplied at the time of order acknowledgment.
TI warrants performance of its hardware products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty . Testing and other quality control techniques are used to the extent TI
deems necessary to support this warranty . Except where mandated by government requirements, testing of all
parameters of each product is not necessarily performed.
TI assumes no liability for applications assistance or customer product design. Customers are responsible for
their products and applications using TI components. T o minimize the risks associated with customer products
and applications, customers should provide adequate design and operating safeguards.
TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right,
copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process
in which TI products or services are used. Information published by TI regarding third-party products or services
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Use of such information may require a license from a third party under the patents or other intellectual property
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Resale of TI products or services with statements different from or beyond the parameters stated by TI for that
product or service voids all express and any implied warranties for the associated TI product or service and
is an unfair and deceptive business practice. TI is not responsible or liable for any such statements.
Following are URLs where you can obtain information on other Texas Instruments products and application
solutions:
ProductsApplications
Amplifiersamplifier.ti.comAudiowww.ti.com/audio
Data Convertersdataconverter.ti.comAutomotivewww.ti.com/automotive
DSPdsp.ti.comBroadbandwww.ti.com/broadband
Interfaceinterface.ti.comDigital Controlwww.ti.com/digitalcontrol
Logiclogic.ti.comMilitarywww.ti.com/military
Power Mgmtpower.ti.comOptical Networkingwww.ti.com/opticalnetwork
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Wirelesswww.ti.com/wireless
Mailing Address:Texas Instruments
Post Office Box 655303 Dallas, Texas 75265
Copyright 2003, Texas Instruments Incorporated
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