TLV27L1 TLV27L2 SLOS378A – SEPTEMBER 2001 – REVISED JULY 2003 FAMILY OF MICROPOWER RAIL-TO-RAIL OUTPUT OPERATIONAL AMPLIFIERS FEATURES D BiMOS Rail-to-Rail Output D Input Bias Current . . . 1 pA D High Wide Bandwidth . . . 160 kHz D High Slew Rate . . . 0.1 V/µs D Supply Current . . . 7 µA (per channel) D Input Noise Voltage . . . 89 nV/√Hz D Supply Voltage Range . . . 2.7 V to 16 V D Specified Temperature Range D DESCRIPTION The TLV27Lx single supply operational amplifiers provide rail-to-rail output capability. The TLV27Lx takes the minimum operating supply voltage down to 2.7 V over the extended industrial temperature range, while adding the rail-to-rail output swing feature. The TLV27Lx also provides 160-kHz bandwidth from only 7 µA. The maximum recommended supply voltage is 16 V, which allows the devices to be operated from (±8-V supplies down to ±1.35 V) two rechargeable cells. – –40°C to 125°C . . . Industrial Grade – 0°C to 70°C . . . Commercial Grade Ultra-Small Packaging – 5 Pin SOT-23 (TLV27L1) The rail-to-rail outputs make the TLV27Lx good upgrades for the TLC27Lx family—offering more bandwidth at a lower quiescent current. The TLV27Lx offset voltage is equal to that of the TLC27LxA variant. Their cost effectiveness makes them a good alternative to the TLC/V225x, where offset and noise are not of premium importance. APPLICATIONS D Portable Medical D Power Monitoring D Low Power Security Detection Systems D Smoke Detectors The TLV27L1/2 are available in the commercial temperature range to enable easy migration from the equivalent TLC27Lx. The TLV27L1 is not available with the power saving/performance boosting programmable pin 8. The TLV27L1 is available in the small SOT-23 package —something the TLC27(L)1 was not—enabling performance boosting in a smaller package. The TLV27L2 is available in the 3mm x 5mm MSOP, providing PCB area savings over the 8-pin SOIC and 8-pin TSSOP. SELECTION GUIDE DEVICE VS [V] IQ/ch [µA] VICR [V] VIO [mV] IIB [pA] GBW [MHz] SLEW RATE [V/µs] Vn, 1 kHz [nV/√Hz] TLV27Lx 2.7 to 16 11 –0.2 to VS+1.2 5 60 0.18 0.06 89 TLV238x 2.7 to 16 10 –0.2 to VS–0.2 4.5 60 0.18 0.06 90 TLC27Lx 4 to 16 17 –0.2 to VS–1.5 10/5/2 60 0.085 0.03 68 OPAx349 1.8 to 5.5 2 –0.2 to VS+0.2 10 10 0.070 0.02 300 OPAx347 2.3 to 5.5 34 –0.2 to VS+0.2 6 10 0.35 0.01 60 TLC225x 2.7 to 16 62.5 0 to VS–1.5 1.5/0.85 60 0.200 0.02 19 NOTE: All dc specs are maximums while ac specs are typicals. 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. Copyright 2001–2003, Texas Instruments Incorporated 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. www.ti.com 1 TLV27L1 TLV27L2 SLOS378A – SEPTEMBER 2001 – REVISED JULY 2003 PACKAGE/ORDERING INFORMATION PRODUCT PACKAGE PACKAGE CODE SYMBOL TLV27L1CD SOIC-8 D 27V1C SPECIFIED TEMPERATURE RANGE 0°C to 70°C TLV27L1CDBV SOT-23 DBV VBIC TLV27L1ID SOIC-8 D 27V1I TLV27L1IDBV SOT-23 DBV VBII TLV27L2CD SOIC-8 D 27V2C 0°C to 70°C TLV27L2ID SOIC-8 D 27V2I –40°C to 125°C ORDER NUMBER TRANSPORT MEDIA TLV27L1CD Tube TLV27L1CDR Tape and Reel TLV27L1CDBVR Tape and Reel TLV27L1CDBVT –40°C to 125°C TLV27L1ID Tube TLV27L1IDR Tape and Reel TLV27L1IDBVR Tape and Reel TLV27L1IDBVT TLV27L2CD Tube TLV27L2CDR Tape and Reel TLV27L2ID Tube TLV27L2IDR Tape and Reel absolute maximum ratings over operating free-air temperature (unless otherwise noted)† Supply voltage, VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16.5 V Input voltage, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VS Output current, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 mA Differential input voltage, VID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VS Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Maximum junction temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C Operating free-air temperature range, TA: C suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C I suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to 125°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 125°C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300°C † 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. NOTE 1: Relative to GND pin. DISSIPATION RATING TABLE PACKAGE θJC (°C/W) θJA (°C/W) TA≤ 25°C POWER RATING TA = 85°C POWER RATING D (8) 38.3 176 710 mW 370 mW DBV (5) 55 324.1 385 mW 201 mW DBV (6) 55 294.3 425 mW 221 mW recommended operating conditions Dual supply Supply voltage, (VS) Single supply Input common-mode voltage range C-suffix Operating free-air temperature, TA 2 I-suffix www.ti.com MIN MAX ±1.35 ±8 2.7 16 –0.2 0 VS–1.2 70 –40 125 UNIT V V °C TLV27L1 TLV27L2 SLOS378A – SEPTEMBER 2001 – REVISED JULY 2003 electrical characteristics at recommended operating conditions, VS = 2.7 V, 5 V, and 10 V (unless otherwise noted) dc performance PARAMETER VIO Input offset voltage αVIO Offset voltage drift CMRR Common-mode rejection ratio AVD Large-signal differential voltage amplification TEST CONDITIONS VIC = VS/2, RL = 100 kΩ, VO = VS/2, RS = 50 Ω VIC = 0 V to VS–1.2 V, RS = 50 Ω VS = 2.7 V, 5V VO(PP)=VS/2, RL = 100 kΩ VS = ±5 V TA† 25°C MIN TYP MAX 0.5 5 Full range 7 25°C 25°C 71 70 25°C 80 Full range 77 25°C 77 Full range 74 mV µV/°C 1.1 Full range UNIT 86 dB 100 dB 82 † Full range is –40°C to 125°C for I suffix. input characteristics PARAMETER IIO TEST CONDITIONS Input offset current VIC = VS/2, RL = 100 kΩ, IIB TA ≤25°C VO = VS/2, RS = 50 Ω Input bias current ri(d) Differential input resistance CIC Common-mode input capacitance f = 1 kHz MIN TYP MAX 1 60 ≤70°C 100 ≤125°C 1000 ≤25°C 1 UNIT pA 60 ≤70°C 200 ≤125°C 1000 pA 25°C 1000 GΩ 25°C 8 pF power supply PARAMETER TEST CONDITIONS IQ Quiescent current (per channel) VO = VS/2 PSRR Power supply rejection ratio (∆VS/∆VIO) VS = 2.7 V to 16 V, VIC = VS/2 V TA† 25°C MIN TYP MAX 7 11 Full range No load, 16 25°C 74 Full range 70 UNIT µA A 82 dB † Full range is –40°C to 125°C for I suffix. www.ti.com 3 TLV27L1 TLV27L2 SLOS378A – SEPTEMBER 2001 – REVISED JULY 2003 electrical characteristics at recommended operating conditions, VS = 2.7 V, 5 V, and ±5 V (unless otherwise noted) (continued) output characteristics PARAMETER TA† 25°C MIN TYP 200 160 Full range 220 25°C 120 Full range 200 VS = ±5 V 25°C 120 Full range 150 25°C 800 VS = 5 V Full range 900 VS = ±5 V 25°C 400 Full range 500 VS = 2.7 V 25°C TEST CONDITIONS VS = 2.7 V VIC = VS/2, IOL = 100 µA VO VS = 5 V Output voltage swing from rail VIC = VS/2, IOL = 500 µA IO Output current † Full range is –40°C to 125°C for I suffix. VO = 0.5 V from rail MAX UNIT 85 50 V 420 200 µA 400 dynamic performance PARAMETER GBP SR φM ts Gain bandwidth product Slew rate at unity gain Phase margin Settling time (0.1%) TEST CONDITIONS RL = 100 kΩ, CL = 10 pF, f = 1 kHz VO(pp) = 1 V, CL = 50 pF RL = 100 kΩ kΩ, RL = 100 kΩ, CL = 50 pF V(STEP)pp = 1 V, AV = –1, CL = 50 pF, RL = 100 kΩ TA 25°C MIN MAX 160 25°C 0.06 –40°C 0.05 125°C 0.8 25°C 62 Rise Fall TYP kHz V/µs ° 62 25°C UNIT µss 44 noise/distortion performance PARAMETER Vn In 4 TEST CONDITIONS Equivalent input noise voltage f = 1 kHz TA 25°C Equivalent input noise current f = 1 kHz 25°C www.ti.com MIN TYP MAX UNIT 89 nV/√Hz 0.6 fA/√Hz TLV27L1 TLV27L2 SLOS378A – SEPTEMBER 2001 – REVISED JULY 2003 TYPICAL CHARACTERISTICS Table of Graphs FIGURE VIO IIB/IIO Input offset voltage vs Common-mode input voltage Input bias and offset current vs Free-air temperature VOH VOL High-level output voltage vs High-level output current 5, 7, 9 Low-level output voltage vs Low-level output current 6, 8, 10 IQ Quiescent current 1, 2, 3 4 vs Supply voltage 11 vs Free-air temperature 12 Supply voltage and supply current ramp up 13 AVD GBP Differential voltage gain and phase shift vs Frequency 14 Gain-bandwidth product vs Free-air temperature 15 φm CMRR Phase margin vs Load capacitance 16 Common-mode rejection ratio vs Frequency 17 PSRR Power supply rejection ratio vs Frequency 18 Input referred noise voltage vs Frequency 19 SR Slew rate vs Free-air temperature 20 VO(PP) Peak-to-peak output voltage vs Frequency 21 Inverting small-signal response 22 Inverting large-signal response 23 Crosstalk vs Frequency INPUT OFFSET VOLTAGE vs COMMON-MODE INPUT VOLTAGE INPUT OFFSET VOLTAGE vs COMMON-MODE INPUT VOLTAGE INPUT OFFSET VOLTAGE vs COMMON-MODE INPUT VOLTAGE 2000 2000 VS = 2.7 V TA = 25°C 1500 V IO – Input Offset Voltage – µ A 1500 1000 500 0 –500 –1000 –1500 –2000 VS = 2.7 V TA = 25°C 1000 500 0 –500 0.5 1 1.5 2 2.5 VIC – Common-Mode Input Voltage – V Figure 1 3 1000 500 0 –500 –1000 –1000 –1500 –1500 –2000 0 VS = ±5 Vdc TA = 25°C 1500 V IO – Input Offset Voltage – µ A 2000 V IO – Input Offset Voltage – µ A 24 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 VIC – Common-Mode Input Voltage – V Figure 2 www.ti.com –2000 –5.2 –3.6 –2 –0.4 1.2 2.8 4.4 VIC – Common-Mode Input Voltage – V Figure 3 5 TLV27L1 TLV27L2 SLOS378A – SEPTEMBER 2001 – REVISED JULY 2003 TYPICAL CHARACTERISTICS INPUT BIAS AND INPUT OFFSET CURRENT vs FREE-AIR TEMPERATURE HIGH-LEVEL OUTPUT VOLTAGE vs HIGH-LEVEL OUTPUT CURRENT 5 VIC = 2.5 80 VO = 2.5 70 60 50 40 30 IIB IIO 20 10 –40°C 3 0°C 2 25°C 1 25°C 0 –1 –2 125°C –3 25 45 65 85 105 TA – Free-Air Temperature – °C –4 3.5 25°C 3 70°C 2.5 2 1.5 125°C 0.5 0 125°C 4 70°C 3.5 3 25°C 2.5 0°C 2 1.5 1 –40°C 0.5 2 2.5 3 3.5 4 4.5 8 1.8 25°C 0°C 0.9 0.6 –40°C 0.4 0.6 0.8 1 1.2 IOL – Low-Level Output Current – mA Figure 10 0.9 1.4 125°C 0.6 0.3 0.2 0.4 0.8 1 1.2 1.4 6 5 –40°C 25°C 0°C 3 2 16 V 10 V 7 70°C 4 0.6 8 5V 6 5 2.7 V 4 3 2 1 0 0.2 70°C 1.2 QUIESCENT CURRENT vs FREE-AIR TEMPERATURE 1 0 0 1.5 Figure 9 I (Q) – Quiescent Currenr – µ A I (Q) – Quiescent Currenr – µ A V OL– Low-Level Output Voltage – V 7 70°C 25°C IOH – High-Level Output Current – mA 125°C 2.1 0°C 1.8 0 QUIESCENT CURRENT vs SUPPLY VOLTAGE VS = 2.7 V 125°C –40°C 2.1 Figure 8 2.7 VS = 2.7 V 2.4 IOL – Low-Level Output Current – mA LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT 0.3 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 Figure 7 1.2 –4 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 5 IOH – High-Level Output Current – mA 1.5 –40°C –3 2.7 0 2.4 –2 HIGH-LEVEL OUTPUT VOLTAGE vs HIGH-LEVEL OUTPUT CURRENT VOH – High-Level Output Voltage – V V OL– Low-Level Output Voltage – V VOH – High-Level Output Voltage – V 0°C 1.5 0°C Figure 6 VS = 5 V 4.5 –40°C 1 0 –1 IOL – Low-Level Output Current – mA 5 VS = 5 V 0.5 25°C LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT 5 4.5 0 70°C 1 Figure 5 HIGH-LEVEL OUTPUT VOLTAGE vs HIGH-LEVEL OUTPUT CURRENT 1 2 IOH – High-Level Output Current – mA Figure 4 4 125°C 3 –5 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 125 VS = ±5 V 4 –5 0 6 5 VS = ±5 V 4 V OL– Low-Level Output Voltage – V VS = 5 V VOH – High-Level Output Voltage – V I IB and I IO – Input Bias and Input Offset Currents – pA 100 90 LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT 0 2 4 6 8 10 12 VS – Supply Voltage – V Figure 11 www.ti.com 14 16 0 –40 –25 –10 5 20 35 50 65 80 95 110 125 TA – Free-Air Temperature – °C Figure 12 TLV27L1 TLV27L2 SLOS378A – SEPTEMBER 2001 – REVISED JULY 2003 TYPICAL CHARACTERISTICS DIFFERENTIAL VOLTAGE GAIN AND PHASE SHIFT vs FREQUENCY 40 120 10 5 A VD – Differential Voltage Gain – dB VS VO 0 VS = 0 to 15 V, RL = 100 Ω, CL = 10 pF, TA = 25°C 15 IQ 10 5 0 5 10 15 20 25 0 30 VS = 5 V RL = 100 kΩ CL = 10 pF TA = 25°C 100 80 60° 40 90° 20 120° 0 150° –20 0.1 1 t – Time – ms 10 100 Figure 14 Phase Margin – Degrees VS = 5 V 130 120 110 60 50 40 30 20 10 0 10 20 35 50 65 80 95 110 125 TA – Free-Air Temperature – °C 100 Hz VS =±2.5 V TA = 25°C 70 60 50 40 30 20 10 0 100 1k 10 k f – Frequency – Hz Figure 18 80 70 60 50 40 30 20 10 0 10 100 k 1M 1k VS = 5 V, G = 2, RF = 100 kΩ 100 SR+ 0.07 0.06 SR– 0.05 0.04 0.03 0.01 0 100 1M 0.09 0.02 50 10 100 k SLEW RATE vs FREE-AIR TEMPERATURE 0.08 150 1 10 k Figure 17 250 200 100 f – Frequency – Hz INPUT REFERRED NOISE VOLTAGE vs FREQUENCY Vn– Input Referred Noise Voltage – nV/ PSRR – Power Supply Rejection Ratio – dB 100 VS = 5 V TA = 25°C 90 Figure 16 POWER SUPPLY REJECTION RATIO vs FREQUENCY 10 110 100 CL – Load Capacitance – pF Figure 15 80 120 1000 SR – Slew Rate – V/ µ s GBP – Gain-Bandwidth Product – kHz VS = 5 V RL = 100 kΩ TA = 25°C 70 140 CMRR – Common-Mode Rejection Ratio – dB 80 160 VS = 2.7 V COMMON-MODE REJECTION RATIO vs FREQUENCY PHASE MARGIN vs LOAD CAPACITANCE 170 90 180° 10 k 100 k 1 M 1k f – Frequency – Hz GAIN-BANDWIDTH PRODUCT vs FREE-AIR TEMPERATURE 100 –40 –25 –10 5 30° 60 Figure 13 150 0° Phase Shift 15 I CC – Supply Current – µ A VS – Supply Voltage – V/dc SUPPLY VOLTAGE AND SUPPLY CURRENT RAMP UP 1k f – Frequency – Hz Figure 19 www.ti.com 10 k 100 k 0 –40 –25 –10 5 VS = 5 V Gain = 1 VO = 1 RL = 100 kΩ CL = 50 pF 20 35 50 65 80 95 110 125 TA – Free-air Temperature – °C Figure 20 7 TLV27L1 TLV27L2 SLOS378A – SEPTEMBER 2001 – REVISED JULY 2003 TYPICAL CHARACTERISTICS INVERTING SMALL-SIGNAL RESPONSE PEAK-TO-PEAK OUTPUT VOLTAGE vs FREQUENCY 2 V OPP – Output Voltage Peak-to-Peak – V 16 VI = 3 VPP 1.5 VS = 15 V 14 1 Amplitude – VPP 12 RL = 100 kΩ, CL = 10 pF, THD+N <= 5% 10 8 6 Gain = –1, RL = 100 kΩ, CL = 10 pF, VS = 5 V, VO = 3 VPP, f = 1 kHz 0.5 0 –0.5 –1 VS = 5 V 4 –1.5 2 VO = 3 VPP VS = 2.7 V –2 –100 0 10 100 1000 1k 0 100 200 300 400 500 600 700 10 k t – Time – µs f – Frequency – Hz Figure 22 Figure 21 CROSSTALK vs FREQUENCY INVERTING LARGE-SIGNAL RESPONSE 0.06 0 0 –40 Crosstalk – dB Amplitude – VPP Gain = –1, RL = 100 kΩ, CL = 10 pF, VS = 5 V, VO = 100 mVPP, f = 1 kHz 0.02 VS = 5 V RL = 2 kΩ CL = 10 pF TA = 25°C Channel 1 to 2 –20 VI = 100 mVPP 0.04 –0.02 –60 –80 –100 –0.04 –120 VO = 100 mVPP –0.06 –100 –140 0 100 200 300 400 500 600 700 10 t – Time – µs 1k f – Frequency – Hz Figure 23 8 100 Figure 24 www.ti.com 10 k 100 k TLV27L1 TLV27L2 SLOS378A – SEPTEMBER 2001 – REVISED JULY 2003 APPLICATION INFORMATION offset voltage The output offset voltage (VOO) is the sum of the input offset voltage (VIO) and both input bias currents (IIB) times the corresponding gains. The following schematic and formula can be used to calculate the output offset voltage: RF RG IIB– + – VI + RS V VO OO +V IO ǒ ǒ ǓǓ R 1) R F "I G IB) R S ǒ ǒ ǓǓ 1) R R F G "I IB– R F IIB+ Figure 25. Output Offset Voltage Model general configurations When receiving low-level signals, limiting the bandwidth of the incoming signals into the system is often required. The simplest way to accomplish this is to place an RC filter at the noninverting terminal of the amplifier (see Figure 26). RG RF O + V I VDD/2 VI V ǒ 1) R R F G Ǔǒ Ǔ 1 1 ) sR1C1 – VO + R1 f –3dB + 1 2pR1C1 C1 Figure 26. Single-Pole Low-Pass Filter If even more attenuation is needed, a multiple pole filter is required. The Sallen-Key filter can be used for this task. For best results, the amplifier should have a bandwidth that is 8 to 10 times the filter frequency bandwidth. Failure to do this can result in phase shift of the amplifier. C1 + _ VI R1 R1 = R2 = R C1 = C2 = C Q = Peaking Factor (Butterworth Q = 0.707) R2 f C2 RG RF –3dB RG = + ( 1 2pRC RF 1 2– Q ) VDD/2 Figure 27. 2-Pole Low-Pass Sallen-Key Filter www.ti.com 9 TLV27L1 TLV27L2 SLOS378A – SEPTEMBER 2001 – REVISED JULY 2003 APPLICATION INFORMATION circuit layout considerations To achieve the levels of high performance of the TLV27Lx, follow proper printed-circuit board design techniques. A general set of guidelines is given in the following. D Ground planes—It is highly recommended that a ground plane be used on the board to provide all components with a low inductive ground connection. However, in the areas of the amplifier inputs and output, the ground plane can be removed to minimize the stray capacitance. D Proper power supply decoupling—Use a 6.8-µF tantalum capacitor in parallel with a 0.1-µF ceramic capacitor on each supply terminal. It may be possible to share the tantalum among several amplifiers depending on the application, but a 0.1-µF ceramic capacitor should always be used on the supply terminal of every amplifier. In addition, the 0.1-µF capacitor should be placed as close as possible to the supply terminal. As this distance increases, the inductance in the connecting trace makes the capacitor less effective. The designer should strive for distances of less than 0.1 inches between the device power terminals and the ceramic capacitors. D Sockets—Sockets can be used but are not recommended. The additional lead inductance in the socket pins will often lead to stability problems. Surface-mount packages soldered directly to the printed-circuit board is the best implementation. D Short trace runs/compact part placements—Optimum high performance is achieved when stray series inductance has been minimized. To realize this, the circuit layout should be made as compact as possible, thereby minimizing the length of all trace runs. Particular attention should be paid to the inverting input of the amplifier. Its length should be kept as short as possible. This will help to minimize stray capacitance at the input of the amplifier. D Surface-mount passive components—Using surface-mount passive components is recommended for high performance amplifier circuits for several reasons. First, because of the extremely low lead inductance of surface-mount components, the problem with stray series inductance is greatly reduced. Second, the small size of surface-mount components naturally leads to a more compact layout thereby minimizing both stray inductance and capacitance. If leaded components are used, it is recommended that the lead lengths be kept as short as possible. 10 www.ti.com TLV27L1 TLV27L2 SLOS378A – SEPTEMBER 2001 – REVISED JULY 2003 APPLICATION INFORMATION general power dissipation considerations For a given θJA, the maximum power dissipation is shown in Figure 28 and is calculated by the following formula: P D + ǒ T Ǔ –T MAX A q JA Where: PD = Maximum power dissipation of TLV27Lx IC (watts) TMAX = Absolute maximum junction temperature (150°C) TA = Free-ambient air temperature (°C) θJA = θJC + θCA θJC = Thermal coefficient from junction to case θCA = Thermal coefficient from case to ambient air (°C/W) MAXIMUM POWER DISSIPATION vs FREE-AIR TEMPERATURE 2 Maximum Power Dissipation – W 1.75 TJ = 150°C PDIP Package Low-K Test PCB θJA = 104°C/W 1.5 1.25 MSOP Package Low-K Test PCB θJA = 260°C/W SOIC Package Low-K Test PCB θJA = 176°C/W 1 0.75 0.5 0.25 SOT-23 Package Low-K Test PCB θJA = 324°C/W 0 –55 –40 –25 –10 5 20 35 50 65 80 95 110 125 TA – Free-Air Temperature – °C NOTE A: Results are with no air flow and using JEDEC Standard Low-K test PCB. Figure 28. Maximum Power Dissipation vs Free-Air Temperature TLV27L1 D PACKAGE (TOP VIEW) TLV27L1 DBV PACKAGE (TOP VIEW) OUT GND IN+ 1 5 VDD 2 3 4 NC IN – IN + GND 1 8 2 7 3 6 4 5 TLV27L2 D PACKAGE (TOP VIEW) NC VDD OUT NC 1OUT 1IN – 1IN + GND 1 8 2 7 3 6 4 5 VDD 2OUT 2IN – 2IN+ IN – NC – No internal connection www.ti.com 11 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. 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