LMC6484

Manufacturer Part NumberLMC6484
ManufacturerTexas Instruments
LMC6484 datasheet
 


Specifications of LMC6484

Number Of Channels4Total Supply Voltage(min)(+5v=5, +/-5v=10)3
Total Supply Voltage(max)(+5v=5, +/-5v=10)15Iq Per Channel(max)(ma)8.1
Gbw(typ)(mhz)1.5Slew Rate(typ)(v/us)1.3
Vio (25c)(max)(mv)3Vn At 1khz(typ)(nv/rthz)37
Iib(max)(pa)4Rail-railIn/Out
Pin/package14PDIP, 14SOIC  
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LMC6484
LMC6484 CMOS Quad Rail-to-Rail Input and Output Operational Amplifier
Literature Number: SNOS675B

LMC6484 Summary of contents

  • Page 1

    ... LMC6484 LMC6484 CMOS Quad Rail-to-Rail Input and Output Operational Amplifier Literature Number: SNOS675B ...

  • 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 LMC6484 is also an excellent upgrade for circuits using limited common-mode range am- plifiers such as the TLC274 and TLC279. ...

  • Page 3

    ... Storage Temperature Range Junction Temperature (Note 4) Operating Ratings 2.0 kV Supply Voltage ± Supply Voltage Junction Temperature Range + − 0.3V − 0.3V LMC6484AM 16V LMC6484AI, LMC6484I ± Thermal Resistance ( N Package, 14-Pin Molded DIP ± Package, 14-Pin 40 mA Surface Mount 260˚C + − = 25˚ 5V, V ...

  • Page 4

    ... and R 1M. Boldface LMC6484A LMC6484I LMC6484M Limit Limit Limit (Note 6) (Note 6) (Note 6) 1.0 0.9 0.9 0.7 0.63 0.54 Units 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

    ... LMC6484AI LMC6484I LMC6484M 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 2.5 2.5 2.5 3.0 3.0 3.2 LMC6484AI LMC6484I LMC6484M 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 2: Human body model, 1 series with 100 pF. All pins rated per method 3015.6 of MIL-STD-883. This is a class 2 device rating. Note 3: Applies to both single supply and split-supply operation. ...

  • Page 7

    Typical Performance Characteristics specified (Continued) Sinking Current vs Output Voltage DS011714-45 Input Voltage Noise vs Frequency Input Voltage Noise vs Input Voltage DS011714-50 www.national.com V = +15V, Single Supply Sinking Current vs Output Voltage DS011714-46 Input Voltage Noise ...

  • Page 8

    Typical Performance Characteristics specified (Continued) Crosstalk Rejection vs Frequency DS011714-53 CMRR vs Frequency DS011714-56 CMRR vs Input Voltage DS011714- +15V, Single Supply Positive PSRR vs Frequency DS011714-54 CMRR vs Input Voltage DS011714- CMR OS ...

  • Page 9

    Typical Performance Characteristics specified (Continued) Input Voltage vs Output Voltage DS011714-62 Open Loop Frequency Response DS011714-65 Gain and Phase vs Capacitive Load DS011714-68 www.national.com V = +15V, Single Supply Input Voltage vs Output Voltage DS011714-63 Open Loop Frequency ...

  • Page 10

    Typical Performance Characteristics specified (Continued) Open Loop Output Impedance vs Frequency DS011714-71 Non-Inverting Large Signal Pulse Response DS011714-74 Non-Inverting Small Signal Pulse Response DS011714- +15V, Single Supply Slew Rate vs Supply Voltage DS011714-72 Non-Inverting Large Signal ...

  • Page 11

    Typical Performance Characteristics specified (Continued) Inverting Large Signal Pulse Response DS011714-80 Inverting Small Signal Pulse Response DS011714-83 Stability vs Capacitive Load DS011714-86 www.national.com V = +15V, Single Supply Inverting Large Signal Pulse Response DS011714-81 Inverting Small Signal Pulse ...

  • Page 12

    ... Capacitive Load Tolerance The LMC6484 can typically directly drive a 100 pF load with V = 15V at unity gain without oscillating. The unity gain S follower is the most sensitive configuration. Direct capacitive 11 = 25˚ ...

  • Page 13

    ... 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 LMC6484. Large feedback resistors can react with small values of input capacitance due to transducers, photo- diodes, and circuit board parasitics to reduce phase margins ...

  • Page 14

    ... Application Information of the ultra-low input current of the LMC6484, typically less than 20 fA essential to have an excellent layout. Fortu- nately, the techniques of obtaining low leakages are quite simple. First, the user must not ignore the surface leakage of the PC board, even though it may sometimes appear accept- ably low, because under conditions of high humidity or dust or contamination, the surface leakage will be appreciable ...

  • Page 15

    ... Figure 14 ). Capable of using the full supply range, the LMC6484 does not require input signals to be scaled down to meet limited common mode voltage ranges. The LMC6484 CMRR maintains integral linearity of a 12-bit data acquisition system to rail-to-rail input amplifiers with only CMRR will degrade the accuracy of the data acquisition system to only 8 bits ...

  • Page 16

    ... LMC6484 can reject a common-mode signals than most in-amps. This makes in- strumentation circuits designed with the LMC6484 an excel- lent choice for noisy or industrial environments. Other appli- FIGURE 15. Low Power 3 Op-Amp Instrumentation Amplifier (Continued) FIGURE 14. Operating from the same Supply Voltage, the LMC6484 buffers the ...

  • Page 17

    ... FIGURE 16. Low-Power Two-Op-Amp Instrumentation Amplifier 11.0 Spice Macromodel A spice macromodel is available for the LMC6484. This model includes accurate simulation of: • input common-mode voltage range • frequency and transient response • GBW dependence on loading conditions • ...

  • Page 18

    Typical Single-Supply Applications FIGURE 21. Large Compliance Range Current Source (Continued) FIGURE 20. Full Wave Rectifier Waveform DS011714-35 DS011714-36 FIGURE 22. Positive Supply Current Sense 17 DS011714-34 www.national.com ...

  • Page 19

    ... 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 LMC6484 ultra-low input current. The ultra-low input current yields negligible offset error even when large value resistors are used. This in turn allows the use of smaller valued capacitors which take less board space and cost less ...

  • Page 20

    ... Molded DIP 14-pin Small Outline 14-pin Ceramic LMC6484AMJ/883 DIP DS011714-4 Temperature Range Military Industrial −40˚C to +85˚C LMC6484AIN LMC6484IN LMC6484AIM, AIMX LMC6484IM, IMX 19 NSC Transport Drawing Media N14A Rail M14A Rail Tape and Reel J14A Rail www.national.com ...

  • Page 21

    ... Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 14-Pin Ceramic Dual-In-Line Package Order Number LMC6484AMJ/883 NS Package Number J14A 20 ...

  • Page 22

    ... Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Order Package Number LMC6484AIM, LMC6484AIMX, LMC6484IM or LMC6484IMX 14-Pin Small Outline NS Package Number M14A 21 www.national.com ...

  • Page 23

    ... Physical Dimensions Order Package Number LMC6484AIN, LMC6484IN or LMC6484MN 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 ...

  • Page 24

    ... 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’ ...