LMC6492

Manufacturer Part NumberLMC6492
ManufacturerTexas Instruments
LMC6492 datasheet
 


Specifications of LMC6492

Number Of Channels2Total Supply Voltage(min)(+5v=5, +/-5v=10)2.5
Total Supply Voltage(max)(+5v=5, +/-5v=10)15.5Gbw(typ)(mhz)1.5
Slew Rate(typ)(v/us)1.3Vio (25c)(max)(mv)3
Vn At 1khz(typ)(nv/rthz)37Iib(max)(pa)200
Rail-railIn/OutShutdownNo
Pin/package8SOIC  
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LMC6492,LMC6494
LMC6492 Dual/LMC6494 Quad CMOS Rail-to-Rail Input and Output Operational
Amplifier
Literature Number: SNOS724C

LMC6492 Summary of contents

  • Page 1

    ... LMC6492,LMC6494 LMC6492 Dual/LMC6494 Quad CMOS Rail-to-Rail Input and Output Operational Amplifier Literature Number: SNOS724C ...

  • Page 2

    ... This eliminates non-linear output errors due to input signals exceeding a traditionally limited common-mode volt- age range. The LMC6492/LMC6494 signal range has a high CMRR for excellent accuracy in non-inverting circuit configurations. The LMC6492/LMC6494 rail-to-rail input is complemented by rail-to-rail output swing ...

  • Page 3

    ... Voltage Range A Large Signal Voltage Gain V www.national.com (Note 1) Junction Temperature (Note 4) Operating Conditions Supply Voltage 2000V Junction Temperature Range ± Supply Voltage LMC6492AE, LMC6492BE + − 0.3V − 0.3V LMC6494AE, LMC6494BE 16V Thermal Resistance (θ ± Package, 8-Pin Molded DIP ± Package, 8-Pin Surface Mount ...

  • Page 4

    ... O (Note 8) LMC6492 1 +5V LMC6492 1 +15V LMC6494 2 +5V LMC6494 2 +15V > and R 1 MΩ. Boldface LMC6492AE LMC6492BE LMC6494AE LMC6494BE Units Limit Limit (Note 6) (Note 6) 4.8 4.8 V 4.7 4.7 min 0.18 0.18 V 0.24 0.24 max 4.5 4.5 V 4.24 4.24 min 0.5 0.5 V 0.65 0.65 max 14.4 14.4 V 14.0 14.0 min 0.35 0.35 V 0.5 0.5 max 13.4 13.4 V 13.0 13.0 min 1 ...

  • Page 5

    ... The maximum allowable power dissipation at any ambient temperature is P J(max ≤ 11.5V. For Sinking tests, 3.5V ≤ greater than 13V or reliability will be adversely affected. 4 > and R 1 MΩ. Boldface LMC6492AE LMC6492BE LMC6494AE LMC6494BE Units Limit Limit (Note 6) (Note 6) 0.7 0.7 Vµs min 0.5 0.5 MHz Deg ...

  • Page 6

    Typical Performance Characteristics V = +15V, Single Supply 25˚C unless otherwise S A specified Supply Current vs Supply Voltage Sourcing Current vs Output Voltage Sourcing Current vs Output Voltage 01204925 01204927 01204929 5 Input Current vs Temperature 01204926 ...

  • Page 7

    Typical Performance Characteristics specified (Continued) Sinking Current vs Output Voltage Output Voltage Swing vs Supply Voltage Input Voltage Noise vs Input Voltage www.national.com V = +15V, Single Supply 01204931 01204933 01204935 6 = 25˚C unless otherwise A Sinking ...

  • Page 8

    Typical Performance Characteristics specified (Continued) Input Voltage Noise vs Input Voltage Crosstalk Rejection vs Frequency Negative PSRR vs Frequency V = +15V, Single Supply 01204937 01204939 01204941 7 = 25˚C unless otherwise A Crosstalk Rejection vs Frequency 01204938 ...

  • Page 9

    Typical Performance Characteristics specified (Continued) CMRR vs Input Voltage CMRR vs Input Voltage ∆ CMR www.national.com V = +15V, Single Supply 01204943 01204945 01204947 8 = 25˚C unless otherwise A CMRR vs Input Voltage 01204944 ∆V ...

  • Page 10

    Typical Performance Characteristics specified (Continued) Input Voltage vs Output Voltage Open Loop Frequency Response Maximum Output Swing vs Frequency V = +15V, Single Supply 01204949 Response vs Temperature 01204951 01204953 9 = 25˚C unless otherwise A Open Loop ...

  • Page 11

    Typical Performance Characteristics specified (Continued) Gain and Phase vs Capacitive Load Open Loop Output Impedance vs Frequency Non-Inverting Large Signal Pulse Response www.national.com V = +15V, Single Supply Impedance vs Frequency 01204955 01204957 Signal Pulse Response 01204959 10 ...

  • Page 12

    Typical Performance Characteristics specified (Continued) Non-Inverting Large Signal Pulse Response Non-Inverting Small Signal Pulse Response Inverting Large Signal Pulse Response V = +15V, Single Supply 01204961 01204963 01204965 11 = 25˚C unless otherwise A Non-Inverting Small Signal Pulse ...

  • Page 13

    Typical Performance Characteristics specified (Continued) Inverting Large Signal Pulse Response Inverting Small Signal Pulse Response Stability vs Capacitive Load www.national.com V = +15V, Single Supply 01204967 01204969 01204971 12 = 25˚C unless otherwise A Inverting Small Signal Pulse ...

  • Page 14

    ... Stability vs Capacitive Load Application Hints INPUT COMMON-MODE VOLTAGE RANGE Unlike Bi-FET amplifier designs, the LMC6492/4 does not exhibit phase inversion when an input voltage exceeds the negative supply voltage. Figure 1 shows an input voltage exceeding both supplies with no resulting phase inversion on the output. ...

  • Page 15

    ... It is quite common to use large values of feedback resis- tance for amplifiers with ultra-low input current, like the LMC6492/4. Although the LMC6492/4 is highly stable over a wide range of operating conditions, certain precautions must be met to achieve the desired pulse response when a large feedback resistor is used. Large feedback resistors with even small values of input capacitance, due to transducers, photo- diodes, and circuit board parasitics, reduce phase margins ...

  • Page 16

    ... This would cause a 33 times degradation from the LMC6492/4’s actual performance guard ring is used and held within the inputs, then the same resistance of Ω will only cause 0. leakage current. See Figure ...

  • Page 17

    ... This low-pass filter circuit can be used as an anti-aliasing filter with the same supply as the A/D converter. Filter de- signs can also take advantage of the LMC6492/4 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 18

    ... R2 and R4 increase by the same amount R1 and R3 de- crease. This causes a differential voltage between the input of the amplifier. The gain of the amplifier is adjusted by R Spice Macromodel A spice macromodel is available for the LMC6492/4. This model includes accurate simulation of: • Input common-model voltage range • Frequency and transient response • ...

  • Page 19

    ... Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 8-Pin Small Outline Package Order Number LMC6492AEM or LMC6492BEM NS Package Number M08A 14-Pin Small Outline Package Order Number LMC6494AEM or LMC6494BEM NS Package Number M14A 18 ...

  • Page 20

    ... Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 8-Lead (0.300" Wide) Molded Dual-In-Line Package Order Number LMC6492AEN or LMC6492BEN NS Package Number N08A 14-Lead Molded Dual-In-Line Package Order Number LMC6494AEN or LMC6494BEN NS Package Number N14A 19 www.national.com ...

  • Page 21

    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 22

    ... 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’ ...