VCA2619YT

VCA2619 BURR-BROWN | Alldatasheet

Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 16

Technical content

FEATURES

/C0068GAIN RANGE: 50dB /C0068LOW CROSSTALK: /C004560dB at Max Gain, fIN = 5MHz /C0068HIGH−SPEED VARIABLE GAIN ADJUST /C0068POWER SHUTDOWN MODE /C0068HIGH IMPEDANCE INPUT BUFFER

APPLICATIONS

/C0068ULTRASOUND SYSTEMS /C0068WIRELESS RECEIVERS /C0068TEST EQUIPMENT /C0068RADAR

DESCRIPTION

The VCA2619 is a highly integrated, dual receive channel, Variable Gain Amplifier (VGA) with analog gain control. The VCA2619s VGA section consists of two parts: the Voltage Controlled Attenuator (VCA) and the Programmable Gain Amplifier (PGA). The gain and gain range of the PGA can be digitally programmed. The combination of these two programmable elements results in a variable gain ranging from 0dB up to a maximum gain as defined by the user through external connections. The single−ended unity gain input buffer provides predictable high input impedance. The output of the VGA can be used in either a single−ended or differential mode to drive high−performance Analog−to− Digital (A/D) converters. A separate power−down pin reduces power consumption. The VCA2619 also features low crosstalk and outstanding distortion performance. The combination of low noise and gain range programmability make the VCA2619 a versatile building block in a number of applications where noise performance is critical. The VCA2619 is available in a TQFP−32 package. All trademarks are the property of their respective owners. VCA2619 SBOS276A − AUGUST 2003 − REVISED AUGUST 2003 Dual, Variable Gain Amplifier with Input Buffer www.ti.com Copyright  2003, Texas Instruments Incorporated 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. /C0080/C0082/C0079/C0068/C0085/C0067/C0084/C0073/C0079/C0078 /C0068/C0065/C0084/C0065 /C0105/C0110/C0102/C0111/C0114/C0109/C0097/C0116/C0105/C0111/C0110 /C0105/C0115 /C0099/C0117/C0114/C0114/C0101/C0110/C0116 /C0097/C0115 /C0111/C0102 /C0112/C0117/C0098/C0108/C0105/C0099/C0097/C0116/C0105/C0111/C0110 /C0100/C0097/C0116/C0101/C0046 /C0080/C0114/C0111/C0100/C0117/C0099/C0116/C0115 /C0099/C0111/C0110/C0102/C0111/C0114/C0109 /C0116/C0111 /C0115/C0112/C0101/C0099/C0105/C0102/C0105/C0099/C0097/C0116/C0105/C0111/C0110/C0115 /C0112/C0101/C0114 /C0116/C0104/C0101 /C0116/C0101/C0114/C0109/C0115 /C0111/C0102 /C0084/C0101/C0120/C0097/C0115 /C0073/C0110/C0115/C0116/C0114/C0117/C0109/C0101/C0110/C0116/C0115 /C0115/C0116/C0097/C0110/C0100/C0097/C0114/C0100 /C0119/C0097/C0114/C0114/C0097/C0110/C0116/C0121/C0046 /C0080/C0114/C0111/C0100/C0117/C0099/C0116/C0105/C0111/C0110 /C0112/C0114/C0111/C0099/C0101/C0115/C0115/C0105/C0110/C0103 /C0100/C0111/C0101/C0115 /C0110/C0111/C0116 /C0110/C0101/C0099/C0101/C0115/C0115/C0097/C0114/C0105/C0108/C0121 /C0105/C0110/C0099/C0108/C0117/C0100/C0101 /C0116/C0101/C0115/C0116/C0105/C0110/C0103 /C0111/C0102 /C0097/C0108/C0108 /C0112/C0097/C0114/C0097/C0109/C0101/C0116/C0101/C0114/C0115/C0046

/C0086/C0067/C0065/C0050/C0054/C0049/C0057 SBOS276A − AUGUST 2003 − REVISED AUGUST 2003 www.ti.com ABSOLUTE MAXIMUM RATINGS (1) Power Supply (+VS) +6V Analog Input −0.3V to (+VS + 0.3V) Logic Input −0.3V to (+VS + 0.3V) Case Temperature +100°C Junction Temperature +150°C Storage Temperature −40°C to +150°C (1)Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. Exposure to absolute maximum conditions for extended periods may affect device reliability. This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. PACKAGE/ORDERING INFORMATION PRODUCT PACKAGE-LEAD PACKAGE DESIGNATOR (1) SPECIFIED TEMPERATURE RANGE PACKAGE MARKING ORDERING NUMBER TRANSPORT MEDIA, QUANTITY VCA2619Y TQFP−32 PBS −40°C to +85°C VCA2619Y VCA2619YT Tape and Reel, 250 VCA2619Y TQFP−32 PBS −40°C to +85°C VCA2619Y VCA2619YR Tape and Reel, 2000 (1)For the most current specification and package information, refer to our web site at www .ti.com.

/C0086/C0067/C0065/C0050/C0054/C0049/C0057 SBOS276A − AUGUST 2003 − REVISED AUGUST 2003 www.ti.com

ELECTRICAL CHARACTERISTICS

At TA = +25°C, VDD = 5V, load resistance = 500Ω on each output to ground single−ended output (1Vpp), MGS = 111, VCACNTL = 2.9V and fIN = 5MHz, unless otherwise noted. VCA2619 PARAMETER CONDITIONS MIN TYP MAX UNIT BUFFER Input Resistance 600 kΩ Input Capacitance 5 pF Input Bias Current 1 nA Maximum Input Voltage 1 Vpp Input Voltage Noise PGA Gain = 45dB, RS = 50Ω 5.9 nV/√Hz Input Current Noise Independent of Gain 350 fA/√Hz Noise Figure R F = 550Ω, PGA Gain = 45dB, RS = 75Ω 13 dB Bandwidth 100 MHz PROGRAMMABLE VARIABLE GAIN AMPLIFIER Peak Input Voltage 1 Vpp −3dB Bandwidth 20 MHz Slew Rate 300 V/µs Output Signal Range R L ≥ 500Ω Each Side to Ground 2.5 ±1 V Output Impedance 1 Ω Output Short−Circuit Current ±40 mA 3rd-Harmonic Distortion VOUT = 1Vpp, VCACNTL = 2.9V −45 −60 dBc 2nd-Harmonic Distortion VOUT = 1Vpp, VCACNTL = 2.9V −42 −50 dBc 2nd-Harmonic Distortion Differential, VOUT = 2Vpp, VCACNTL = 3.0V, MGS = 011 −50 dBc Overload Performance (2nd-Harmonic Distortion)Input Signal = 0.5Vpp, VCACNTL = 2V −40 to −45 dB Time Delay 5 ns IMD, 2−Tone VOUT = 2Vpp, f = 9.95MHz −59 dBc Crosstalk 2Vpp Differential −60 dB ACCURACY Gain Slope VCA CNTL = 0.4V to 2.9V 20 dB/V Gain Error(1) Output Offset Voltage Gain Range VCA CNTL = 0.2V to 3.0V VCA CNTL = 0.4V to 2.9V VCA CNTL = 0.2V to 3.0V VCA CNTL = 0.4V to 2.9V 48 ±2.75 ±1.50 ±50 ±2.0 dB dB mV dB dB GAIN CONTROL INTERFACE Input Voltage (VCACNTL ) Range 0 to 3.0 V Input Resistance Response Time

1 M ΩInput Resistance

Response Time 45dB Gain Change 0.2 µs POWER SUPPLY Specified Operating Range 4.75 5.0 5.25 V Power Dissipation 240 300 mW Power−Down 9.2 mW (1)Referenced to best fit dB−linear curve.

/C0086/C0067/C0065/C0050/C0054/C0049/C0057 SBOS276A − AUGUST 2003 − REVISED AUGUST 2003 www.ti.com PIN CONFIGURATION +INA NC VDDR VBIAS VCM GND R NC +INB VCA CNTL MGS 3 MGS 2 MGS 1 PD NC NC DNC VCA2619 NC NC C P2B CP1B VDDB GND B POUTB NOUTB NC NC CP2A CP1A VDDA GND A POUTA NOUTA PIN CONFIGURATION PIN DESIGNATOR DESCRIPTION PIN DESIGNATOR DESCRIPTION 1 +INA Noninverting Input Channel A 17 DNC Do Not Connect

2 NC No Internal Connection 18 NC No Internal Connection

3 VDDR Internal Reference Supply 19 NC No Internal Connection

4 VBIAS Bias Voltage 20 PD Power-Down (Active LOW)

5 VCM Common−Mode V oltage 23 MGS 1 Maximum Gain Select 1 (MSB)

6 GND R Internal Reference Ground 22 MGS 2 Maximum Gain Select 2

7 NC No Internal Connection 23 MGS 3 Maximum Gain Select 3 (LSB)

8 +INB Noninverting Input Channel B24 VCA CNTL VCA Analog Control

9 NC No Internal Connection 25 N OUTA Negative VCA Output Channel A

10 NC No Internal Connection 26 POUTA Positive VCA Output Channel A

11 C P2B Coupling Capacitor Channel B27 GND A Ground Channel A

12 C P1B Coupling Capacitor Channel B28 VDDA +5V Supply Channel A

13 VDDB +5V Supply Channel B 29 C P1A Coupling Capacitor Channel A

14 GND B Ground Channel B 30 C P2A Coupling Capacitor Channel A

15 POUTB Positive Output Channel B 31 NC No Internal Connection

16 N OUTB Negative Output Channel B 32 NC No Internal Connection

/C0086/C0067/C0065/C0050/C0054/C0049/C0057 SBOS276A − AUGUST 2003 − REVISED AUGUST 2003 www.ti.com TYPICAL CHARACTERISTICS At TA = 25°C and VDD = 5V, load resistance = 500Ω on each output to ground, differential output (2VPP ) MGS = 111, and fIN = 5MHz, unless otherwise noted. GAIN vs VCA VCA CNTL (V) Gain (dB) −10 −14 MGS = 111 MGS = 010 MGS = 100 MGS = 011 MGS = 110 MGS = 101 GAIN ERROR vs VCA CNTL VCA CNTL (V) 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 Gain Error (dB) 3.0 2.5 2.0 1.5 1.0 0.5 −0.5 −1.0 −1.5 −2.0 −2.5 −3.0 10MHz 5MHz 1MHz GAIN MATCH: CHA to CHB, VCA CNTL =0 . 4 V D e l t aG a i n( d B ) Units −0.99 −0.91 −0.83 −0.75 −0.67 −0.59 −0.51 −0.42 −0.34 −0.26 −0.18 −0.10 −0.02 0.06 0.14 0.22 0.30 0.38 0.47 More GAIN ERROR vs TEMPERATURE VCA CNTL (V) 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 Gain Error (dB) 3.0 2.5 2.0 1.5 1.0 0.5 −0.5 −1.0 −1.5 −2.0 −2.5 −3.0 +25/C0095C −40/C0095C +85/C0095C GAIN ERROR vs VCA CNTL VCA CNTL (V) 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 Gain Error (dB) 3.0 2.5 2.0 1.5 1.0 0.5 −0.5 −1.0 −1.5 −2.0 −2.5 −3.0 MGS = 010 MGS = 100 MGS = 111 GAIN MATCH: CHA to CHB, VCA CNTL =2 . 9 V Delta Gain (dB) Units −0.16 −0.14 −0.13 −0.11 −0.09 −0.08 −0.06 −0.04 −0.03 −0.01 0.01 0.02 0.04 0.06 0.07 0.09 0.11 0.12 0.14 More

/C0086/C0067/C0065/C0050/C0054/C0049/C0057 SBOS276A − AUGUST 2003 − REVISED AUGUST 2003 www.ti.com TYPICAL CHARACTERISTICS (continued) At TA = 25°C and VDD = 5V, load resistance = 500Ω on each output to ground, differential output (2VPP ) MGS = 111, and fIN = 5MHz, unless otherwise noted. GAIN vs FREQUENCY (VCA CNTL =2 . 9 V ) Frequency (MHz) 100k 1M 10M 100M Gain (dB) MGS = 111 MGS = 100 MGS = 010 OUTPUT REFERRED NOISE vs VCA CNTL VCA CNTL (V) Noise (nV/√Hz) 1100 1000 900 800 700 600 500 400 300 200 100 MGS = 111 MGS = 100 R S=5 0Ω INPUT REFERRED NOISE vs R S R S (Ω) 11 0 1 0 0 1 k Noise (nV√Hz) 100 GAIN vs FREQUENCY (MGS = 111) Frequency (MHz) 100k 1M 10M 100M Gain (dB) −10 −20 VCA CNTL =2 . 9 V VCA CNTL =1 . 9 V VCA CNTL =0 . 9 V INPUT REFERRED NOISE vs VCA CNTL VCA CNTL (V) Noise (nV/√Hz) 1500 1400 1300 1200 1100 1000 900 800 700 600 500 400 300 200 100 MGS = 111 MGS = 100 R S =5 0Ω NOISE FIGURE vs RS 10 100 1k N o i s eF i g u r e( d B ) R S (Ω)

/C0086/C0067/C0065/C0050/C0054/C0049/C0057 SBOS276A − AUGUST 2003 − REVISED AUGUST 2003 www.ti.com TYPICAL CHARACTERISTICS (continued) At TA = 25°C and VDD = 5V, load resistance = 500Ω on each output to ground, differential output (2VPP ) MGS = 111, and fIN = 5MHz, unless otherwise noted. NOISE FIGURE vs VCA CNTL VCA CNTL (V) Noise Figure (dB) HARMONIC DISTORTION vs FREQUENCY (Differential, 2VPP , MGS = 100) Frequency (Hz) 100k 1M 10M Harmonic Distortion (dBc) −30 −35 −40 −45 −50 −55 −60 −65 −70 −75 −80 −85 −90 VCA CNTL =0 . 9 V ,H 2 VCA CNTL =0 . 9 V ,H 3 VCA CNTL =2 . 9 V ,H 2 VCA CNTL =2 . 9 V ,H 3 HARMONIC DISTORTION vs FREQUENCY (Single− Ended, 1VPP , MGS = 010) Frequency (Hz) 100k 1M 10M Harmonic Distortion (dBc) −30 −35 −40 −45 −50 −55 −60 −65 −70 −75 −80 −85 −90 VCA CNTL =0 . 9 V ,H 2 VCA CNTL =0 . 9 V ,H 3 VCA CNTL =2 . 9 V ,H 2 VCA CNTL =2 . 9 V ,H 3 HARMONIC DISTORTION vs FREQUENCY (Differential, 2VPP , MGS = 010) Frequency (Hz) 100k 1M 10M Harmonic Distortion (dBc) −30 −35 −40 −45 −50 −55 −60 −65 −70 VCA CNTL =0 . 9 V ,H 2 VCA CNTL =0 . 9 V ,H 3 VCA CNTL =2 . 9 V ,H 2 VCA CNTL =2 . 9 V ,H 3 HARMONIC DISTORTION vs FREQUENCY (Differential, 2VPP ,M G S=1 1 1 ) Frequency (Hz) 100k 1M 10M Harmonic Distortion (dBc) −30 −35 −40 −45 −50 −55 −60 −65 −70 −75 −80 VCA CNTL =0 . 9 V ,H 2 VCA CNTL =0 . 9 V ,H 3 VCA CNTL =2 . 9 V ,H 2 VCA CNTL =2 . 9 V ,H 3 HARMONIC DISTORTION vs FREQUENCY (Single− Ended, 1VPP , MGS = 100) Frequency (Hz) 100k 1M 10M Harmonic Distortion (dBc) −30 −35 −40 −45 −50 −55 −60 −65 −70 −75 −80 −85 −90 VCA CNTL =0 . 9 V ,H 2 VCA CNTL =0 . 9 V ,H 3 VCA CNTL =2 . 9 V ,H 2 VCA CNTL =2 . 9 V ,H 3

/C0086/C0067/C0065/C0050/C0054/C0049/C0057 SBOS276A − AUGUST 2003 − REVISED AUGUST 2003 www.ti.com TYPICAL CHARACTERISTICS (continued) At TA = 25°C and VDD = 5V, load resistance = 500Ω on each output to ground, differential output (2VPP ) MGS = 111, and fIN = 5MHz, unless otherwise noted. HARMONIC DISTORTION vs FREQUENCY (Single− Ended, 1VPP ,M G S=1 1 1 ) Frequency (Hz) 100k 1M 10M Harmonic Distortion (dBc) −30 −35 −40 −45 −50 −55 −60 −65 −70 −75 −80 −85 −90 VCA CNTL =0 . 9 V ,H 2 VCA CNTL =0 . 9 V ,H 3 VCA CNTL =2 . 9 V ,H 2 VCA CNTL =2 . 9 V ,H 3 HARMONIC DISTORTION vs VCA CNTL (Single−Ended, 1VPP ,5 M H z ) VCA CNTL (V) Harmonic Distortion (dBc) −30 −35 −40 −45 −50 −55 −60 −65 MGS = 010, H2 MGS = 100, H2 MGS = 111, H2 MGS = 010, H3 MGS = 100, H3 MGS = 111, H3 INTERMODULATION DISTORTION (Differential, 2 VPP ,fIN =1 0 M H z ) Frequency (MHz) Amplitude (dB) −10 −20 −30 −40 −50 −60 −70 −80 −90 −100 HARMONIC DISTORTION vs VCA CNTL (Differential, 2VPP ,5 M H z ) VCA CNTL (V) Harmonic Distortion (dBc) −10 −15 −20 −25 −30 −35 −40 −45 −50 −55 −60 −65 −70 −75 −80 MGS = 010, H2 MGS = 100, H2 MGS = 111, H2 MGS = 010, H3 MGS = 100, H3 MGS = 111, H3 INTERMODULATION DISTORTION (Single−Ended, 1VPP ,fIN =1 0 M H z ) Frequency (MHz) Amplitude (dB) −10 −20 −30 −40 −50 −60 −70 −80 −90 −100 CROSS TALK vs FREQUENCY (Differential, 2VPP ,M G S=0 1 1 ) Frequency (Hz) Cross Talk (dB) 10M 20M1M −10 −20 −30 −40 −50 −60 −70 VCA CNTL =0 . 9 V VCA CNTL =1 . 9 V VCA CNTL =2 . 9 V

width of the VCA2619 between 75kHz and 30MHz. Figure 1. Simplified Block Diagram of the would present a varying impedance to the input circuitry. value can be decreased to no less than 100pF.

Figure 4. Piecewise Approximation to Logarithmic Control Characteristics.

where CEXTERNAL is the external capacitor value in farads. capacitor, as this can increase the power-on delay time. ation factors are detailed in Table I. Table 1. MGS Settings.

000 Not Valid Not Valid

001 Not Valid Not Valid

parent gain will be 6dB lower. Figure 5. Simplified Block Diagram of PGA.

The VCA2619 is an analog amplifier capable of high gain. tained from the layout diagram of Figure 6. Figure 6. VCA2619 Layout.

Orderable Device Status(1) Package Type Package Drawing Pins Package Qty Eco Plan(2) Lead/Ball FinishMSL Peak Temp (3) VCA2619YR ACTIVE TQFP PBS 32 2000 None Call TI Call TI VCA2619YT ACTIVE TQFP PBS 32 250 None Call TI Call TI (1)The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2)Eco Plan - May not be currently available - please checkhttp://www.ti.com/productcontentfor the latest availability information and additional product content details. None: Not yet available Lead (Pb-Free). Pb-Free (RoHS):TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Green (RoHS & no Sb/Br):TI defines "Green" to mean "Pb-Free" and in addition, uses package materials that do not contain halogens, including bromine (Br) or antimony (Sb) above 0.1% of total product weight. (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDECindustry standard classifications, and peak solder temperature. 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. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. 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. PACKAGE OPTION ADDENDUM www.ti.com 9-Dec-2004 Addendum-Page 1

MPQF027 – NOVEMBER 1995 1POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 PBS (S-PQFP-G32) PLASTIC QUAD FLATPACK Gage Plane 0,13 NOM 0,25 0,40 0,70 Seating Plane 0,10 MIN 4087735/A 11/95 0,17 0,23 5,05 4,95 SQ 3,50 TYP 6,90 7,10 SQ 1,05 0,95 1,20 MAX 0,08 0,50 M0,08 0°–7° NOTES: A. All linear dimensions are in millimeters. B. This drawing is subject to change without 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. To 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 does not constitute a license from TI to use such products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI. Reproduction of information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for such altered documentation. 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: Products Applications Amplifiers amplifier.ti.com Audio www.ti.com/audio Data Converters dataconverter.ti.com Automotive www.ti.com/automotive DSP dsp.ti.com Broadband www.ti.com/broadband Interface interface.ti.com Digital Control www.ti.com/digitalcontrol Logic logic.ti.com Military www.ti.com/military Power Mgmt power.ti.com Optical Networking www.ti.com/opticalnetwork Microcontrollers microcontroller.ti.com Security www.ti.com/security Telephony www.ti.com/telephony Video & Imaging www.ti.com/video Wireless www.ti.com/wireless Mailing Address: Texas Instruments Post Office Box 655303 Dallas, Texas 75265 Copyright  2004, Texas Instruments Incorporated