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OPA 434 3
OPA 234 3
(R)
OPA343 OPA2343 OPA4343
OPA 434 3
www.ti.com
SINGLE-SUPPLY, RAIL-TO-RAIL OPERATIONAL AMPLIFIERS microAmplifier TM Series
FEATURES
q q q q q q q RAIL-TO-RAIL INPUT/OUTPUT
MICRO SIZE PACKAGES
APPLICATIONS
q DRIVING A/D CONVERTERS q PCMCIA CARDS q DATA ACQUISITION q AUDIO PROCESSING q COMMUNICATIONS q ACTIVE FILTERS q TEST EQUIPMENT The OPA343 series operates on a single supply as low as 2.5V, and input common-mode voltage range extends 500mV beyond the supply rails. Output voltage swings to within 1mV of the supply rails with a 100k load. They offer excellent dynamic response (BW = 5.5MHz, SR = 6V/s), yet quiescent current is only 850A. Dual and quad designs feature completely independent circuitry for lowest crosstalk and freedom from interaction. The single (OPA343) packages are the tiny SOT-23-5 surface mount and SO-8 surface mount. The dual (OPA2343) comes in the miniature MSOP-8 surface mount and SO-8 surface mount. The quad (OPA4343) packages are the space-saving SSOP-16 surface mount, SO-14 surface mount, and TSSOP-14 surface mount. All are specified from -40C to +85C and operate from -55C to +125C. A SPICE macromodel is available for design analysis.
OPA4343
WIDE BANDWIDTH: 5.5MHz HIGH SLEW RATE: 6V/s LOW THD+NOISE: 0.0007% (f = 1kHz) LOW QUIESCENT CURRENT: 850A/chan SINGLE, DUAL, AND QUAD VERSIONS
DESCRIPTION
OPA343 series rail-to-rail CMOS operational amplifiers are designed for low-cost, miniature applications. They are optimized for low-voltage, single-supply operation. Rail-to-rail input/output and high-speed operation make them ideal for driving sampling Analog-to-Digital (A/D) converters. They are also well suited for general-purpose and audio applications as well as providing I/V conversion at the output of Digital-to-Analog (D/A) converters. Single, dual, and quad versions have identical specifications for design flexibility.
OPA343
OPA343
NC -In +In V- 1 2 3 4 SO-8 OPA2343 Out A -In A +In A V- 1 2 3 4 SO-8, MSOP-8 A B 8 7 6 5 V+ Out B -In B +In B
Out A -In A +In A V+ +In B -In B Out B 1 2
8 7 6 5
NC
Out 1
V+
5
V+
V- 2
Output
+In 3
NC
4 SOT-23-5
-In
OPA4343 14 13 A 3 4 5 B 6 7 TSSOP-14 C 9 8 -In C Out C Out B NC 7 8 SSOP-16 10 9 Out C NC D 12 11 10 +In D V- +In C +V +In B -In B 4 5 B 6 C 11 -In C 13 12 -V +In C Out D -In D
Out A -In A +In A
1 2 A 3 D
16 15 14
Out D -In D +In D
Copyright (c) 2000, Texas Instruments Incorporated
SBOS090A
Printed in U.S.A. October, 2000
SPECIFICATIONS: VS = 2.7V to 5.5V
Boldface limits apply over the specified temperature range, TA = -40C to +85C. VS = 5V.
At TA = +25C, RL = 10k connected to VS /2 and VOUT = VS /2, unless otherwise noted. OPA343NA, UA OPA2343EA, UA OPA4343EA, UA, NA PARAMETER OFFSET VOLTAGE Input Offset Voltage vs Temperature vs Power Supply Over Temperature Channel Separation, dc INPUT BIAS CURRENT Input Bias Current Over Temperature Input Offset Current NOISE Input Voltage Noise, f = 0.1 to 50kHz Input Voltage Noise Density, f = 1kHz Current Noise Density, f = 1kHz INPUT VOLTAGE RANGE Common-Mode Voltage Range Common-Mode Rejection Ratio VOS dVOS/dT PSRR CONDITION VS = 5V VS = 2.7V to 5.5V, VCM = 0V VS = 2.7V to 5.5V, VCM = 0V MIN TYP(1) 2 3 40 0.2 IB IOS 0.2 0.2 8 25 3 -0.3 74 60 54 (V+) + 0.3 92 75 70 1013 || 3 1013 || 6 AOL RL = 100k, 5mV < VO < (V+) - 5mV RL = 100k, 5mV < VO < (V+) - 5mV RL = 10k, 50mV < VO < (V+) - 50mV RL = 10k, 50mV < VO < (V+) - 50mV RL = 2k, 200mV < VO < (V+) - 200mV RL = 2k, 200mV < VO < (V+) - 200mV G=1 VS = 5V, G = 1, CL = 100pF VS = 5V, 2V Step, CL = 100pF VS = 5V, 2V Step, CL = 100pF VIN * G = VS VS = 5V, VO = 3Vp-p(2), G = 1, f = 1kHz RL = 100k, AOL 100dB RL = 100k, AOL 100dB RL = 10k, AOL 100dB RL = 10k, AOL 100dB RL = 2k, AOL 92dB RL = 2k, AOL 92dB ISC CLOAD VS IQ IO = 0, VS = +5V IO = 0, VS = +5V -40 -55 -65 2.7 2.5 to 5.5 0.85 100 100 100 100 92 92 120 117 110 10 10 MAX 8 200 200 UNITS mV V/C V/V V/V V/V pA pA pA Vrms nV/Hz fA/Hz V dB dB dB || pF || pF dB dB dB dB dB dB MHz V/s s s s % 5 5 50 50 200 200 mV mV mV mV mV mV mA
60
en in VCM CMRR
-0.3V < VCM < (V+) - 1.8V VS = 5V, -0.3V < VCM < 5.3V VS = 2.7V, -0.3V < VCM < 3V
INPUT IMPEDANCE Differential Common-Mode OPEN-LOOP GAIN Open-Loop Voltage Gain Over Temperature Over Temperature Over Temperature FREQUENCY RESPONSE Gain-Bandwidth Product Slew Rate Settling Time, 0.1% 0.01% Overload Recovery Time Total Harmonic Distortion + Noise OUTPUT Voltage Output Swing from Rail(3) Over Temperature Over Temperature Over Temperature Short-Circuit Current Capacitive Load Drive POWER SUPPLY Specified Voltage Range Operating Voltage Range Quiescent Current (per amplifier) Over Temperature TEMPERATURE RANGE Specified Range Operating Range Storage Range Thermal Resistance SOT-23-5 Surface Mount MSOP-8 Surface Mount SO-8 Surface Mount SSOP-16 Surface Mount SO-14 Surface Mount TSSOP-14 Surface Mount GBW SR
THD+N
5.5 6 1 1.6 0.2 0.0007 1 10 40 50 See Typical Curve 5 1.25 1.4 +85 +125 +150 200 150 150 100 100 125
V V mA mA C C C C/W C/W C/W C/W C/W C/W
JA
NOTES: (1) VS = +5V. (2) VOUT = 0.25V to 3.25V. (3) Output voltage swings are measured between the output and power supply rails.
2
OPA343, 2343, 4343
SBOS090A
ABSOLUTE MAXIMUM RATINGS(1)
Supply Voltage ................................................................................... 7.5V Signal Input Terminals, Voltage(2) ..................... (V-) -0.5V to (V+) +0.5V Current(2) .................................................... 10mA Output Short-Circuit(3) .............................................................. Continuous Operating Temperature .................................................. -55C to +125C Storage Temperature ..................................................... -65C to +150C Junction Temperature ...................................................................... 150C Lead Temperature (soldering, 10s) ................................................. 300C NOTES: (1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degrade device reliability. (2) Input terminals are diode-clamped to the power supply rails. Input signals that can swing more than 0.5V beyond the supply rails should be current-limited to 10mA or less. (3) Short-circuit to ground, one amplifier per package.
ELECTROSTATIC DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Burr-Brown 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
PACKAGE DRAWING NUMBER SPECIFIED TEMPERATURE RANGE PACKAGE MARKING ORDERING NUMBER(1) TRANSPORT MEDIA
PRODUCT Single OPA343NA
PACKAGE
5-Lead SOT-23-5
331
-40C to +85C
B43
"
OPA343UA
"
SO-8 Surface-Mount
"
182
"
-40C to +85C
"
OPA343UA
"
Dual OPA2343EA
"
MSOP-8 Surface-Mount
"
337
"
-40C to +85C
"
C43
OPA343NA/250 OPA343NA /3K OPA343UA OPA343UA /2K5
Tape and Reel Tape and Reel Rails Tape and Reel
"
OPA2343UA " Quad OPA4343EA " OPA4343UA " OPA4343NA "
"
SO-8 Surface-Mount
"
182
"
-40C to +85C
"
OPA2343UA
"
SSOP-16 Surface-Mount
"
322
"
-40C to +85C
"
OPA4343EA
OPA2343EA /250 OPA2343EA/2K5 OPA2343UA OPA2343UA/2K5
Tape and Reel Tape and Reel Rails Tape and Reel
"
SO-14 Surfac-Mount
"
235
"
-40C to +85C
"
OPA4343UA
"
TSSOP-14 Surface-Mount "
"
357 "
"
-40C to +85C "
"
OPA4343NA "
OPA4343EA /250 OPA4343EA /2K5 OPA4343UA OPA4343UA /2K5 OPA4343NA/250 OPA4343NA/2K5
Tape and Reel Tape and Reel Rails Tape and Reel Tape and Reel Tape and Reel
NOTE: (1) Models with a slash (/) are available only in Tape and Reel in the quantities indicated (e.g., /2K5 indicates 2500 devices per reel). Ordering 2500 pieces of "OPA2343EA/2K5" will get a single 2500 piece Tape and Reel.
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user's own risk. Prices and specifications are subject to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant any BURR-BROWN product for use in life support devices and/or systems.
OPA343, 2343, 4343
SBOS090A
3
TYPICAL PERFORMANCE CURVES
At TA = +25C, VS = +5V, and RL = 10k connected to VS/2, unless otherwise noted.
OPEN-LOOP GAIN/PHASE vs FREQUENCY 160 140 120 -45
PSRR, CMRR (dB)
POWER-SUPPLY and COMMON-MODE REJECTION vs FREQUENCY
0
100 PSRR 80
Voltage Gain (dB)
100 80 60 40 20 0 -20 0.1 1 10 100 1k 10k 100k 1M 10M Frequency (Hz) -180 -135 -90
Phase ()
60
40 CMRR VCM = -0.3V to (V+) -1.8V 20
0 1 10 100 1k Frequency (Hz) 10k 100k 1M
INPUT VOLTAGE AND CURRENT NOISE SPECTRAL DENSITY vs FREQUENCY 10k Current Noise Channel Separation (dB) 1k 140
CHANNEL SEPARATION vs FREQUENCY
Voltage Noise (nVHz)
Voltage Noise 100 10
Current Noise (fAHz)
1k
100
130
120 Dual and quad devices. G = 1, all channels. Quad measured channel A to D or B to C--other combinations yield improved rejection.
10
1
110
1 1 10 100 1k Frequency (Hz) 10k 100k 1M
0.1
100 10 100 1k Frequency (Hz) 10k 100k
TOTAL HARMONIC DISTORTION + NOISE vs FREQUENCY 0.1 RL = 600
5k
CLOSED-LOOP OUTPUT IMPEDANCE vs FREQUENCY G = 100 4k
Output Resistance ()
RL = 2k 0.01
THD+N (%)
G = 10
RL = 10k RL = 600 RL = 2k
G = 10 3k
2k
0.001
G=1
RL = 10k
G=1
1k
0.0001 20 100 1k Frequency (Hz) 10k 20k
0 10 100 1k 10k 100k 1M 10M Frequency (Hz)
4
OPA343, 2343, 4343
SBOS090A
TYPICAL PERFORMANCE CURVES (Cont.)
At TA = +25C, VS = +5V, and RL = 10k connected to VS/2, unless otherwise noted.
OPEN-LOOP GAIN AND POWER-SUPPLY REJECTION vs TEMPERATURE 130
100
COMMON-MODE REJECTION vs TEMPERATURE
120
AOL, PSRR (dB)
AOL
RL = 100k
90 80
110 RL = 2k 100
CMRR (dB)
RL = 10k
70 60 50 40 VS = 2.7V to 5V, VCM = -0.3V to (V+) -1.8V VS = 5V, VCM = -0.3V to 5.3V VS = 2.7V, VCM = -0.3V to 3V -75 -50 -25 0 25 50 75 100 125
90
PSRR
80 -75 -50 -25 0 25 50 75 100 125 Temperature (C)
Temperature (C)
QUIESCENT CURRENT vs TEMPERATURE 1100 Per Amplifier
QUIESCENT CURRENT vs SUPPLY VOLTAGE 900 Per Amplifier
Quiescent Current (A)
Quiescent Current (A)
1000
850
900
800
800
700
750
600 -75 -50 -25 0 25 50 75 100 125 Temperature (C)
700 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 Supply Voltage (V)
SHORT-CIRCUIT CURRENT vs TEMPERATURE 100 90 -ISC
SHORT-CIRCUIT CURRENT vs SUPPLY VOLTAGE 60
Short-Circuit Current (mA)
80 70 60 50 40 30 20 10 0 -75 -50 -25 0 25 50 75 100 125 Temperature (C) +ISC
Short-Circuit Current (mA)
-ISC 50
+ISC 40
30 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 Supply Voltage (V)
OPA343, 2343, 4343
SBOS090A
5
TYPICAL PERFORMANCE CURVES (Cont.)
At TA = +25C, VS = +5V, and RL = 10k connected to VS/2, unless otherwise noted.
INPUT BIAS CURRENT vs TEMPERATURE 1000
INPUT BIAS CURRENT vs INPUT COMMON-MODE VOLTAGE 1.0 0.8
Input Bias Current (pA)
Input Bias Current (pA)
100
0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8
10
1
0.1 -60 -40 -20 0 20 40 60 80 100 Temperature (C)
-1.0 -1 0 1 2 3 4 5 6 Common-Mode Voltage (V)
OUTPUT VOLTAGE SWING vs OUTPUT CURRENT 5 +125C 4
Output Voltage (V)
6
MAXIMUM OUTPUT VOLTAGE vs FREQUENCY VS = 5.5V Maximum output voltage without slew rate-induced distortion.
+25C
-55C
5
Output Voltage (Vp-p)
4 3 2 1 0 100k VS = 2.7V
3
2
1
+125C
+25C
-55C
0 0 10 20 30 40 50 60 70 80 90 100 Output Current (mA)
1M Frequency (Hz)
10M
OFFSET VOLTAGE PRODUCTION DISTRIBUTION 30 25 Typical production distribution of packaged units. 25
OFFSET VOLTAGE DRIFT PRODUCTION DISTRIBUTION Typical production distribution of packaged units.
Percent of Amplifiers (%)
20 15 10 5 0 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8
Percent of Amplifiers (%)
20
15
10
5
0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Offset Voltage Drift (V/C) Offset Voltage (mV)
6
OPA343, 2343, 4343
SBOS090A
TYPICAL PERFORMANCE CURVES (Cont.)
At TA = +25C, VS = +5V, and RL = 10k connected to VS/2, unless otherwise noted. LARGE-SIGNAL STEP RESPONSE CL = 100pF
SMALL-SIGNAL STEP RESPONSE CL = 100pF
50mV/div
1V/div
1s/div
1s/div
SMALL-SIGNAL OVERSHOOT vs LOAD CAPACITANCE 60 50 G = -1 G = +1
SETTLING TIME vs CLOSED-LOOP GAIN 100
0.01%
Settling Time (s)
Overshoot (%)
40 30 20 10 0 100
10
G = 5 See text for reducing overshoot.
1
0.1%
0.1
1000 Load Capacitance (pF) 10k
1
10
100
1000
Closed-Loop Gain (V/V)
OPA343, 2343, 4343
SBOS090A
7
APPLICATIONS INFORMATION
OPA343 series op amps are fabricated on a state-of-the-art 0.6 micron CMOS process. They are unity-gain stable and suitable for a wide range of general-purpose applications. Rail-to-rail input/output make them ideal for driving sampling A/D converters. In addition, excellent ac performance makes them well-suited for audio applications. The class AB output stage is capable of driving 600 loads connected to any point between V+ and ground. Rail-to-rail input and output swing significantly increases dynamic range, especially in low-supply applications. Figure 1 shows the input and output waveforms for the OPA343 in unity-gain configuration. Operation is from a single +5V supply with a 10k load connected to VS /2. The input is a 5Vp-p sinusoid. Output voltage is approximately 4.98Vp-p. Power-supply pins should be bypassed with 0.01F ceramic capacitors.
OPERATING VOLTAGE OPA343 series op amps are fully specified from +2.7V to +5V. However, supply voltage may range from +2.5V to +5.5V. Parameters are guaranteed over the specified supply range--a unique feature of the OPA343 series. In addition, many specifications apply from -40C to +85C. Most behavior remains virtually unchanged throughout the full operating voltage range. Parameters which vary significantly with operating voltages or temperature are shown in the Typical Performance Curves. RAIL-TO-RAIL INPUT The input common-mode voltage range of the OPA343 series extends 500mV beyond the supply rails. This is achieved with a complementary input stage--an N-channel input differential pair in parallel with a P-channel differential pair, as shown in Figure 2. The N-channel pair is active for input voltages close to the positive rail, typically (V+) - 1.3V to 500mV above the positive supply. The P-channel pair is on for inputs from 500mV below the negative supply to approximately (V+) - 1.3V. There is a small transition region, typically (V+) - 1.5V to (V+) - 1.1V, in which both input pairs are on. This 400mV transition region can vary 300mV with process variation. Thus, the transition region (both stages on) can range from (V+) - 1.8V to (V+) - 1.4V on the low end, up to (V+) - 1.2V to (V+) - 0.8V on the high end. Within the 400mV transition region PSRR, CMRR, offset voltage, offset drift, and THD may be degraded compared to operation outside this region. A double-folded cascode adds the signal from the two input pairs and presents a differential signal to the class AB output stage. Normally, input bias current is approximately 200fA, however, input voltages exceeding the power supplies by
VS = +5, G = +1, RL = 10k
5 VIN
5 VOUT 0
FIGURE 1. Rail-to-Rail Input and Output.
V+ Reference Current
VIN+
2V/div
VIN-
VBIAS1
Class AB Control Circuitry
VO
VBIAS2
V- (Ground)
FIGURE 2. Simplified Schematic.
8
OPA343, 2343, 4343
SBOS090A
more than 500mV can cause excessive current to flow in or out of the input pins. Momentary voltages greater than 500mV beyond the power supply can be tolerated if the current on the input pins is limited to 10mA. This is easily accomplished with an input resistor, as shown in Figure 3. Many input signals are inherently current-limited to less than 10mA, therefore, a limiting resistor is not required.
capacitive load reacts with the op amp's output resistance, along with any additional load resistance, to create a pole in the small-signal response which degrades the phase margin. In unity gain, OPA343 series op amps perform well, with a pure capacitive load up to approximately 1000pF. Increasing gain enhances the amplifier's ability to drive more capacitance. See the typical performance curve "Small-Signal Overshoot vs Capacitive Load." One method of improving capacitive load drive in the unity gain configuration is to insert a 10 to 20 resistor in series with the output, as shown in Figure 4. This significantly reduces ringing with large capacitive loads. However, if there is a resistive load in parallel with the capacitive load, RS creates a voltage divider. This introduces a dc error at the output and slightly reduces output swing. This error may be insignificant. For instance, with RL = 10k and RS = 20, there is only about a 0.2% error at the output. DRIVING A/D CONVERTERS OPA343 series op amps are optimized for driving medium speed (up to 100kHz) sampling A/D converters. However, they also offer excellent performance for higher-speed converters. The OPA343 series provides an effective means of buffering the A/D's input capacitance and resulting charge injection while providing signal gain. For applications requiring high accuracy, the OPA340 series is recommended. Figures 5 and 6 show the OPA343 driving an ADS7816. The ADS7816 is a 12-bit, micro-power sampling converter in the tiny MSOP-8 package. When used with the miniature package options of the OPA343 series, the combination is ideal for space-limited and low-power applications. For further information consult the ADS7816 data sheet. With the OPA343 in a noninverting configuration, an RC network at the amplifier's output can be used to filter high frequency noise in the signal (see Figure 5). In the inverting configuration, filtering may be accomplished with a capacitor across the feedback resistor (see Figure 6).
V+ IOVERLOAD 10mA max VIN 5k
OPAx343
VOUT
FIGURE 3. Input Current Protection for Voltages Exceeding the Supply Voltage. RAIL-TO-RAIL OUTPUT A class AB output stage with common-source transistors is used to achieve rail-to-rail output. For light resistive loads (>50k), the output voltage is typically a few millivolts from the supply rails. With moderate resistive loads (2k to 50k), the output can swing to within a few tens of millivolts from the supply rails and maintain high open-loop gain. See the typical performanc curve "Output Voltage Swing vs Output Current." CAPACITIVE LOAD AND STABILITY OPA343 series op amps can drive a wide range of capacitive loads. However, all op amps under certain conditions may become unstable. Op amp configuration, gain, and load value are just a few of the factors to consider when determining stability. An op amp in unity gain configuration is the most susceptible to the effects of capacitive load. The
V+ RS OPAx343 VIN 10 to 20 RL CL VOUT
FIGURE 4. Series Resistor in Unity-Gain Configuration Improves Capacitive Load Drive.
OPA343, 2343, 4343
SBOS090A
9
+5V
For improved accuracy use OPA340.
0.1F
0.1F
8 V+ 500 OPA343 VIN 3300pF VIN = 0V to 5V for 0V to 5V output. +In 2 -In 3 GND 4 ADS7816 12-Bit A/D
1 VREF DCLOCK DOUT CS/SHDN 7 6 5 Serial Interface
NOTE: A/D Input = 0 to VREF RC network filters high frequency noise.
FIGURE 5. OPA343 in Noninverting Configuration Driving ADS7816.
+5V 330pF For improved accuracy use OPA340. 5k VIN 5k 8 V+ +In OPA343 2 -In 3 GND 4 ADS7816 12-Bit A/D 1 VREF DCLOCK DOUT CS/SHDN 7 6 5 Serial Interface 0.1F 0.1F
VIN = 0V to -5V for 0V to 5V output.
NOTE: A/D Input = 0 to VREF
FIGURE 6. OPA343 in Inverting Configuration Driving ADS7816.
+5V Filters 160Hz to 2.4kHz
10M VIN 200pF 10M 1/2 OPA2343 243k 1.74M 47pF 1/2 OPA2343 RL 220pF
FIGURE 7. Speech Bandpass Filter.
<1pF (prevents gain peaking)
10M +V OPA343 VO
FIGURE 8. Transimpedance Amplifier.
10
OPA343, 2343, 4343
SBOS090A
IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI's standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. Customers are responsible for their applications using TI components. In order to minimize risks associated with the customer's applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. TI's publication of information regarding any third party's products or services does not constitute TI's approval, warranty or endorsement thereof.
Copyright (c) 2000, Texas Instruments Incorporated

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