LMC6482

Manufacturer Part NumberLMC6482
ManufacturerTexas Instruments
LMC6482 datasheet
 


Specifications of LMC6482

Number Of Channels2Total Supply Voltage(min)(+5v=5, +/-5v=10)3
Total Supply Voltage(max)(+5v=5, +/-5v=10)15.5Iq Per Channel(max)(ma)0.7
Gbw(typ)(mhz)1.5Slew Rate(typ)(v/us)1.3
Vio (25c)(max)(mv)0.75Vn At 1khz(typ)(nv/rthz)37
Iib(max)(pa)4Rail-railIn/Out
Pin/package8PDIP, 8SOIC, 8VSSOP  
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LMC6482
LMC6482 CMOS Dual Rail-To-Rail Input and Output Operational Amplifier
Literature Number: SNOS674C

LMC6482 Summary of contents

  • Page 1

    ... LMC6482 LMC6482 CMOS Dual Rail-To-Rail Input and Output Operational Amplifier Literature Number: SNOS674C ...

  • Page 2

    ... CMRR, makes it unique among rail-to-rail input amplifiers ideal for systems, such as data acquisition, that require a large input signal range. The LMC6482 is also an excellent upgrade for circuits using limited common-mode range am- plifiers such as the TLC272 and TLC277. ...

  • Page 3

    ... Supply Voltage 1.5kV Junction Temperature Range ± Supply Voltage LMC6482AM + − +0.3V −0.3V 16V LMC6482AI, LMC6482I ± 5mA Thermal Resistance (θ N Package, 8-Pin Molded DIP ± 30mA M Package, 8-Pin Surface 40mA Mount MSOP package, 8-Pin Mini SO 260˚C −65˚C to +150˚C + − ...

  • Page 4

    ... /2, and R 1M. Boldface LMC6482AI LMC6482I LMC6482M Limit Limit Limit (Note 6) (Note 6) (Note 6) 1.0 0.9 0.9 0.7 0.63 0.54 www.national.com Units min V min V max V min V max V min V max V min V max mA min mA min mA min mA min mA max mA max Units V/µ ...

  • Page 5

    ... LMC6482AI LMC6482I LMC6482M Limit Limit Limit (Note 6) (Note 6) (Note 6) 2.0 3.0 3.0 2.7 3.7 3 2.5 2.5 2.5 0.6 0.6 0.6 1.2 1.2 1.2 1.5 1.5 1.6 LMC6482AI LMC6482I LMC6482M Limit Limit Limit (Note 6) (Note 6) (Note 6) Units % % Units mV max µV/˚ min dB min V max V min min V max mA max Units V/µs MHz % ...

  • Page 6

    AC Electrical Characteristics Note 3: Applies to both single-supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature can result in exceeding the maximum allowed junction temperature of 150˚C. Output currents in excess of Note 4: The maximum ...

  • Page 7

    Typical Performance Characteristics specified (Continued) Sourcing Current vs. Output Voltage Sinking Current vs. Output Voltage Output Voltage Swing vs. Supply Voltage www.national.com V = +15V, Single Supply Sinking Current vs. Output Voltage 01171344 Sinking Current vs. Output Voltage ...

  • Page 8

    Typical Performance Characteristics specified (Continued) Input Voltage Noise vs. Input Voltage Input Voltage Noise vs. Input Voltage Crosstalk Rejection vs. Frequency V = +15V, Single Supply Input Voltage Noise vs. Input Voltage 01171350 Crosstalk Rejection vs. Frequency 01171352 ...

  • Page 9

    Typical Performance Characteristics specified (Continued) Negative PSRR vs. Frequency CMRR vs. Input Voltage CMRR vs. Input Voltage www.national.com V = +15V, Single Supply CMRR vs. Frequency 01171356 CMRR vs. Input Voltage 01171358 01171360 8 = 25˚C unless otherwise ...

  • Page 10

    Typical Performance Characteristics specified (Continued) ∆V vs. CMR OS Input Voltage vs. Output Voltage Open Loop Frequency Responce V = +15V, Single Supply Input Voltage vs. Output Voltage 01171362 Open Loop Frequency Response 01171364 Open Loop Frequency Response ...

  • Page 11

    Typical Performance Characteristics specified (Continued) Maximum Output Swing vs. Frequency Gain and Phase vs. Capacitive Load Open Loop Output Impedance vs. Frequency www.national.com V = +15V, Single Supply Gain and Phase vs. Capacitive Load 01171368 Open Loop Output ...

  • Page 12

    Typical Performance Characteristics specified (Continued) Non-Inverting Large Signal Pulse Response Non-Inverting Large Signal Pulse Response Non-Inverting Small Signal Pulse Response V = +15V, Single Supply Non-Inverting Large Signal Pulse Response 01171374 Non-Inverting Small Signal Pulse Response 01171376 Non-Inverting ...

  • Page 13

    Typical Performance Characteristics specified (Continued) Inverting Large Signal Pulse Response Inverting Large Signal Pulse Response Inverting Small Signal Pulse Response www.national.com V = +15V, Single Supply Inverting Large Signal Pulse Response 01171380 Inverting Small Signal Pulse Response 01171382 ...

  • Page 14

    Typical Performance Characteristics specified (Continued) Stability vs. Capacitive Load Stability vs. Capacitive Load Stability vs. Capacitive Load V = +15V, Single Supply Stability vs. Capacitive Load 01171386 Stability vs. Capacitive Load 01171388 Stability vs. Capacitive Load 01171390 13 ...

  • Page 15

    ... Vs = 5V. Using the calculated output resistance, maximum output voltage swing can be estimated as a function of load. 4.0 CAPACITIVE LOAD TOLERANCE The LMC6482 can typically directly drive a 100pF load with V = 15V at unity gain without oscillating. The unity gain S follower is the most sensitive configuration. Direct capacitive loading reduces the phase margin of op-amps. The combi- nation of the op-amp’ ...

  • Page 16

    ... COMPENSATING FOR INPUT CAPACITANCE It is quite common to use large values of feedback resis- tance with amplifiers that have ultra-low input current, like the LMC6482. Large feedback resistors can react with small values of input capacitance due to transducers, photo- diodes, and circuits board parasitics to reduce phase mar- gins ...

  • Page 17

    ... This would cause a 250 times degradation from the LMC6482’s actual performance. However guard ring is held within the inputs, then even a resistance of 10 cause only 0 ...

  • Page 18

    ... Low power, single supply data acquisition system solutions are provided by buffering the ADC12038 with the LMC6482 (Figure 14). Capable of using the full supply range, the LMC6482 does not require input signals to be scaled down to meet limited common mode voltage ranges. The LMC4282 CMRR of 82dB maintains integral linearity of a ...

  • Page 19

    ... CMRR needed for designing instru- mentation circuits. Instrumentation circuits designed with the LMC6482 can reject a larger range of common-mode signals than most in-amps. This makes instrumentation circuits de- signed with the LMC6482 an excellent choice of noisy or industrial environments. Other applications that benefit from www.national.com (Continued) FIGURE 14 ...

  • Page 20

    ... FIGURE 16. Low-Power Two-Op-Amp Instrumentation Amplifier 11.0 SPICE MACROMODEL A spice macromodel is available for the LMC6482. This model includes accurate simulation of: • Input common-mode voltage range • Frequency and transient response • GBW dependence on loading conditions • ...

  • Page 21

    Typical Single-Supply Applications FIGURE 17. Half-Wave Rectifier with Input Current Protection (RI) FIGURE 18. Half-Wave Rectifier Waveform www.national.com The circuit in Figure 17 uses a single supply to half wave rectify a sinusoid centered about ground. R into the amplifier ...

  • Page 22

    ... FIGURE 23. Low Voltage Peak Detector with Rail-to-Rail Peak Capture Range In Figure 23 dielectric absorption and leakage is minimized by using a polystyrene or polyethylene hold capacitor. The droop rate is primarily determined by the value of C The LMC6482’s high CMRR (82dB) allows excellent accu- racy throughout the circuit’s rail-to-rail dynamic capture range. 01171335 FIGURE 22 ...

  • Page 23

    ... FIGURE 25. Rail-to-Rail Single Supply Low Pass Filter The low pass filter circuit in Figure 25 can be used as an anti-aliasing filter with the same voltage supply as the A/D converter. Filter designs can also take advantage of the LMC6482 ultra-low input current. The ultra-low input current yields Package Temperature Range Military − ...

  • Page 24

    ... Physical Dimensions inches (millimeters) unless otherwise noted Order Package Number LMC6482AIM, LMC6482AIMX, LMC6482IM or LMC6482IMX 8-Pin Ceramic Dual-In-Line Package Order Number LMC6482AMJ/883 NS Package Number J08A 8-Pin Small Outline Package NS Package Number M08A 23 www.national.com ...

  • Page 25

    ... Physical Dimensions www.national.com inches (millimeters) unless otherwise noted (Continued) 8-Pin Molded Dual-In-Line Package Order Package Number LMC6482AIN, LMC6482IN NS Package Number N08E 8-Lead Mini Small Outline Molded Package, JEDEC Order Number LMC6482IMM, or LMC6482IMMX NS Package Number MUA08A 24 ...

  • Page 26

    National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. For the most current product information ...

  • Page 27

    ... 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’ ...