LMC6035 NSC | Alldatasheet
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Technical content
Features
(Typical Unless Otherwise Noted) n LMC6035 in micro SMD Package n Guaranteed 2.7V, 3V, 5V and 15V Performance n Specified for 2 k Ω and 600Ω Loads n Wide Operating Range: 2.0V to 15.5V n Ultra Low Input Current: 20fA n Rail-to-Rail Output Swing @ 600Ω: 200mV from either rail at 2.7V @ 100kΩ: 5mV from either rail at 2.7V n High Voltage Gain: 126dB n Wide Input Common-Mode Voltage Range -0.1V to 2.3V at V S = 2.7V n Low Distortion: 0.01% at 10kHz n LMC6035 Dual LMC6036 Quad n See AN-1112 for micro SMD considerations
Applications
n High Impedance Buffer or Preamplifier n Battery Powered Electronics n Medical Instrumentation Connection Diagram 8-Bump microSMD 01283065 Top View (Bump Side Down) microSMD Connection Table Bump Number LM6035IBP LMC6035IBPX LMC6035ITL LMC6035ITLX A1 OUTPUT A OUTPUT B B1 IN A − V+ C1 IN A + OUTPUT A C2 V − IN A− C3 IN B + IN A+ B3 IN B − V− A3 OUTPUT B IN B + A2 V + IN B− October 2002 LMC6035/LMC6036 Low Power 2.7V Single Supply CMOS Operational Amplifiers © 2002 National Semiconductor Corporation DS012830 www.national.com
Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. ESD Tolerance (Note 2) Human Body Model 3000V Machine Model 300V Differential Input Voltage ± Supply Voltage Supply Voltage (V+ −V −) 16V Output Short Circuit to V + (Note 8) Output Short Circuit to V − (Note 3) Lead Temperature (soldering, 10 sec.) 260˚C Current at Output Pin ±18mA Current at Input Pin ±5mA Current at Power Supply Pin 35mA Storage Temperature Range −65˚C to +150˚C Junction Temperature (Note 4) 150˚C Operating Ratings (Note 1) Supply Voltage 2.0V to 15.5V Temperature Range LMC6035I and LMC6036I −40˚C ≤ T J ≤ +85˚C Thermal Resistance (θJA) 8-pin MSOP 230˚C/W 8-pin SOIC 175˚C/W 14-pin SOIC 127˚C/W 14-pin TSSOP 137˚C/W 8-Bump (6 mil) micro SMD 220˚C/W 8-Bump (12 mil) Thin micro SMD 220˚C/W Unless otherwise specified, all limits guaranteed for T J = 25˚C, V+ = 2.7V, V − = 0V, VCM = 1.0V, V O = 1.35V and R L > 1MΩ. Boldface limits apply at the temperature extremes. Symbol Parameter Conditions LMC6035I/LMC6036I UnitsMin (Note 6) Typ (Note 5) Max (Note 6) VOS Input Offset Voltage 0.5 5 mV TCVOS Input Offset Voltage Average Drift 2.3 µV/˚C IIN Input Current (Note 11) 0.02 90 pA IOS Input Offset Current (Note 11) 0.01 45 PA RIN Input Resistance > 10 Tera Ω CMRR Common Mode Rejection Ratio 0.7V ≤ VCM ≤ 12.7V, V+ = 15V 96 dB +PSRR Positive Power Supply Rejection Ratio 5V ≤ V+ ≤ 15V, VO = 2.5V 93 dB −PSRR Negative Power Supply Rejection Ratio 0V ≤ V− ≤ −10V, VO = 2.5V, V + =5 V 97 dB VCM Input Common-Mode Voltage Range V+ = 2.7V For CMRR ≥ 40dB −0.1 0.3 0.5 V2.0 1.7 2.3 V+ =3 V For CMRR ≥ 40dB −0.3 0.1 0.3 V2.3 2.0 2.6 V+ =5 V For CMRR ≥ 50dB −0.5 −0.2 0.0 V4.2 3.9 4.5 V+ = 15V For CMRR ≥ 50dB −0.5 −0.2 0.0 V14.0 13.7 14.4 LMC6035/LMC6036 www.national.com 2
Unless otherwise specified, all limits guaranteed for T J = 25˚C, V+ = 2.7V, V − = 0V, VCM = 1.0V, V O = 1.35V and R L > 1MΩ. Boldface limits apply at the temperature extremes. Symbol Parameter Conditions LMC6035I/LMC6036I UnitsMin (Note 6) Typ (Note 5) Max (Note 6) AV Large Signal Voltage Gain (Note 7) RL = 600Ω Sourcing 100
1000 V/mV
250 V/mV
RL =2 kΩ Sourcing 2000 V/mV Sinking 500 V/mV V O Output Swing V + = 2.7V RL = 600Ω to 1.35V 2.0 1.8 2.5 V0.2 0.5 0.7 V + = 2.7V RL =2 kΩ to 1.35V 2.4 2.2 2.62 V0.07 0.2 0.4 V + = 15V RL = 600Ω to 7.5V 13.5 13.0 14.5 V0.36 1.25 1.50 V + = 15V, RL =2k Ω to 7.5V 14.2 13.5 14.8 V0.12 0.4 0.5 I O Output Current V O = 0V Sourcing 4 mAV O = 2.7V Sinking 3 IS Supply Current LMC6035 for Both Amplifiers V O = 1.35V 0.65 1.6 1.9 mALMC6036 for All Four Amplifiers V O = 1.35V 1.3 2.7 3.0 Unless otherwise specified, all limits guaranteed for T J = 25˚C, V+ = 2.7V, V − = 0V, V CM = 1.0V, V O = 1.35V and R L > 1M Ω. Boldface limits apply at the temperature extremes. Symbol Parameter Conditions Typ Units (Note 5) SR Slew Rate (Note 9) 1.5 V/µs GBW Gain Bandwidth Product V + = 15V 1.4 MHz θ m Phase Margin 48 ˚ G m Gain Margin 17 dB Amp-to-Amp Isolation (Note 10) 130 dB e n Input-Referred Voltage Noise f = 1kHz 27 V CM =1 V i n Input Referred Current Noise f = 1kHz 0.2 THD Total Harmonic Distortion f = 10kHz, A V = −10 R L =2 kΩ,V O =8V PP 0.01 % LMC6035/LMC6036 www.national.com3
Unless otherwise specified, all limits guaranteed for T J = 25˚C, V+ = 2.7V, V − = 0V, V CM = 1.0V, V O = 1.35V and R L > 1M Ω. Boldface limits apply at the temperature extremes. Symbol Parameter Conditions Typ Units (Note 5) V + = 10V Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Ch aracteristics. Note 2: Human body model, 1.5k Ω in series with 100pF. Note 3: Applies to both single-supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature can result in exceed ing the maximum allowed junction temperature of 150˚C. Output currents in excess of 30mA over long term may adversely affect reliability. Note 4: The maximum power dissipation is a function of T J(MAX), θJA, and T A. The maximum allowable power dissipation at any ambient temperature is PD =( TJ(MAX) −TA)/θ JA. All numbers apply for packages soldered directly onto a PC board with no air flow. Note 5: Typical Values represent the most likely parametric norm or one sigma value. Note 6: All limits are guaranteed by testing or statistical analysis. Note 8: Do not short circuit output to V + when V+ is greater than 13V or reliability will be adversely affected. Note 9: V+ = 15V. Connected as voltage follower with 10V step input. Number specified is the slower of the positive and negative slew rates. Note 10: Input referred, V + = 15V and R L = 100kΩ connected to 7.5V. Each amp excited in turn with 1kHz to produce V O =1 2V PP. Note 11: Guaranteed by design. LMC6035/LMC6036 www.national.com 4
Typical Performance Characteristics Unless otherwise specified, V S = 2.7V, single supply, T A = 25˚C Supply Current vs. Supply Voltage (Per Amplifier) Input Current vs. Temperature 01283052 01283053 Sourcing Current vs. Output Voltage Sourcing Current vs. Output Voltage 01283054 01283055 Sinking Current vs. Output Voltage Sinking Current vs. Output Voltage 01283056 01283057 LMC6035/LMC6036 www.national.com5
Typical Performance Characteristics Unless otherwise specified, V S = 2.7V, single supply, T A = 25˚C (Continued) Output Voltage Swing vs. Supply Voltage Input Noise vs. Frequency 01283058 01283059 Input Noise vs. Frequency Amp to Amp Isolation vs. Frequency 01283060 01283061 Amp to Amp Isolation vs. Frequency +PSRR vs. Frequency 01283062 01283032 LMC6035/LMC6036 www.national.com 6
Typical Performance Characteristics Unless otherwise specified, V S = 2.7V, single supply, T A = 25˚C (Continued) −PSRR vs. Frequency CMRR vs. Frequency 01283033 01283034 CMRR vs. Input Voltage CMRR vs. Input Voltage 01283035 01283036 Input Voltage vs. Output Voltage Input Voltage vs. Output Voltage 01283014 01283015 LMC6035/LMC6036 www.national.com7
Typical Performance Characteristics Unless otherwise specified, V S = 2.7V, single supply, T A = 25˚C (Continued) Frequency Response vs. Temperature Frequency Response vs. Temperature 01283016 01283017 Gain and Phase vs. Capacitive Load Gain and Phase vs. Capacitive Load 01283018 01283019 Slew Rate vs. Supply Voltage Non-Inverting Large Signal Response 01283037 01283020 LMC6035/LMC6036 www.national.com 8
Typical Performance Characteristics Unless otherwise specified, V S = 2.7V, single supply, T A = 25˚C (Continued) Non-Inverting Large Signal Response Non-Inverting Large Signal Response 01283021 01283022 Non-Inverting Small Signal Response Non-Inverting Small Signal Response 01283023 01283024 Non-Inverting Large Signal Response Inverting Large Signal Response 01283025 01283026 LMC6035/LMC6036 www.national.com9
Typical Performance Characteristics Unless otherwise specified, V S = 2.7V, single supply, T A = 25˚C (Continued) Inverting Large Signal Response Inverting Large Signal Response 01283027 01283028 Inverting Small Signal Response Inverting Small Signal Response 01283029 01283030 Inverting Small Signal Response Stability vs. Capacitive Load 01283031 01283038 LMC6035/LMC6036 www.national.com 10
Typical Performance Characteristics Unless otherwise specified, V S = 2.7V, single supply, T A = 25˚C (Continued) Stability vs. Capacitive Load Stability vs. Capacitive Load 01283039 01283040 Stability vs. Capacitive Load Stability vs. Capacitive Load 01283041 01283042 Stability vs. Capacitive Load 01283043 LMC6035/LMC6036 www.national.com11
1.0 Application Notes
1.1 Background
an important factor in determining its output swing capability. exceptional output swing capability under these conditions. benchmark op amp uses twice the supply current. FIGURE 1. Differential Driver FIGURE 2. Output Swing Performance of FIGURE 3. Output Swing Performance of Benchmark
1.0 Application Notes (Continued)
to drop significantly which causes increased distortion.
1.2 APPLICATION CIRCUITS
1.2.1 Low-Pass Active Filter
active filters, in cordless and cellular phones for example. values. This reduces power consumption and space. ing procedure follows Figure 5.
1.2.1.1 Low-Pass Frequency Scaling Procedure
- First determine the frequency scaling factor (FSF) for
- Then divide all of the normalized capacitor values by the
- Last, choose an impedance scaling factor (Z). This Z
factor can be calculated from a standard value for C2.
1.2.2 High Pass Active Filter
high-pass active filter per Figure 6. FIGURE 4. THD+Noise Performance of LMC6035 and FIGURE 5. 2-Pole, 3kHz, Active, Sallen and Key, FIGURE 6. 2 Pole, 300Hz, Sallen and Key,
1.2.2.1 High-Pass Frequency Scaling Procedure
1.2.3 Dual Amplifier Bandpass Filter
topologies, the fc and Q adjustments interact with each other. provides a 1kHz center frequency an daQo f 100.
1.2.3.1 DABP Component Selection Procedure
- First choose a center frequency (f
- Then compute R1 for a desired Q (f c/BW) as follows:
1.3 PRINTED-CIRCUIT-BOARD LAYOUT
board, even though it may at times appear acceptably low. surface leakage will be appreciable. FIGURE 7. 2 Pole, 1kHz Active, Bandpass Filter FIGURE 8. Example, using the LMC6036
1.3.1 CAPACITIVE LOAD TOLERANCE
figuration most sensitive to oscillation is a unity-gain follower. See the Typical Performance Characteristics. tance is near the threshold for oscillation.
1.4 Micro SMD Considerations
resistor (see Electrical Characteristics). FIGURE 9. Guard Ring Connections FIGURE 10. Rx, Cx Improve Capacitive Load Tolerance
8-Pin SO/MSOP 14-Pin SO/TSSOP 01283001 Top View 01283002 Top View
Ordering Information
Package Temperature Range Transport Media NSC Drawing Industrial −40˚C to +85˚C 8-pin Small Outline (SO) LMC6035IM Rails M08ALMC6035IMX 2.5k Units Tape and Reel 8-pin Mini Small Outline (MSOP) LMC6035IMM 1k Units Tape and Reel MUA08A LMC6035IMMX 3.5k Units Tape and Reel 14-pin Small Outline (SO) LMC6036IM Rails M14ALMC6036IMX 2.5k Units Tape and Reel 14-pin Thin Shrink Small Outline (TSSOP) LMC6036IMT Rails MTC14LMC6036IMTX 2.5k Units Tape and Reel 8-Bump micro SMD (Small Bump) LMC6035IBP 250 Units Tape and Reel BPA08FFBLMC6035IBPX 3k Units Tape and Reel 8-Bump Thin micro SMD (Large Bump) LMC6035ITL 250 Units Tape and Reel TLA08JQALMC6035ITLX 3k Units Tape and Reel 01283006 FIGURE 11. Compensating for Large Capacitive Loads with a Pull Up Resistor
Physical Dimensions inches (millimeters) unless otherwise noted 8-Lead (0.150" Wide) Molded Small Outline Package, JEDEC 8-Lead (0.150" Wide) Molded Mini Small Outline Package, JEDEC LMC6035/LMC6036 www.national.com17
Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 14-Lead (0.150" Wide) Molded Small Outline Package, JEDEC 14-Pin TSSOP LMC6035/LMC6036 www.national.com 18
Physical Dimensions inches (millimeters) unless otherwise noted (Continued) NOTE: UNLESS OTHERWISE SPECIFIED. 1. EPOXY COATING. 2. 63Sn/37Pb EUTECTIC BUMP. 3. RECOMMEND NON-SOLDER MASK DEFINED LANDING PAD. 4. PIN A1 IS ESTABLISHED BY LOWER LEFT CORNER WITH RESPECT TO TEXT ORIENTATION PINS ARE NUMBERED COUNTERCLOCKWISE. 5. XXX IN DRAWING NUMBER REPRESENTS PACKAGE SIZE VARIATION WHERE X1 IS PACKAGE WIDTH, X2 IS PACKAGE LENGTH AND X3 IS PACKAGE HEIGHT. 6. REFERENCE JEDEC REGISTRATION MO-211, VARIATION BC. 8-Bump micro SMD (6 mil bumps) X1 = 1.412mm X 2 = 1.412mm X 3 = 0.850mm LMC6035/LMC6036 www.national.com19
Physical Dimensions inches (millimeters) unless otherwise noted (Continued) NOTE: UNLESS OTHERWISE SPECIFIED. 1. EPOXY COATING. 2. 63Sn/37Pb EUTECTIC BUMP. 3. RECOMMEND NON-SOLDER MASK DEFINED LANDING PAD. 4. PIN A1 IS ESTABLISHED BY LOWER LEFT CORNER WITH RESPECT TO TEXT ORIENTATION PINS ARE NUMBERED COUNTERCLOCKWISE. 5. XXX IN DRAWING NUMBER REPRESENTS PACKAGE SIZE VARIATION WHERE X1 IS PACKAGE WIDTH, X2 IS PACKAGE LENGTH AND X3 IS PACKAGE HEIGHT. 6. REFERENCE JEDEC REGISTRATION MO-211, VARIATION BC. 8-Bump Thin micro SMD (12 mil bumps) X1 = 1.717mm X 2 = 1.869mm X 3 = 0.600mm LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. National Semiconductor Corporation Americas Email: support@nsc.com National Semiconductor Europe Fax: +49 (0) 180-530 85 86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 69 9508 6208 English Tel: +44 (0) 870 24 0 2171 Français Tel: +33 (0) 1 41 91 8790 National Semiconductor Asia Pacific Customer Response Group Tel: 65-2544466 Fax: 65-2504466 Email: ap.support@nsc.com National Semiconductor Japan Ltd. Tel: 81-3-5639-7560 Fax: 81-3-5639-7507 www.national.com LMC6035/LMC6036 Low Power 2.7V Single Supply CMOS Operational Amplifiers National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the righ t at any time without notice to change said circuitry and specifications.