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LMV102 Datasheet(PDF) 8 Page - National Semiconductor (TI) |
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LMV102 Datasheet(HTML) 8 Page - National Semiconductor (TI) |
8 / 12 page Typical Performance Characteristics (Unless otherwise specified, V S = +5V, single supply, TA = 25˚C.) (Continued) Application Notes The LMV101/102/105/110 integrates a rail-to-rail op amp, two internal gain-setting resistors and a V +/2 bias circuit into one ultra tiny package, SC70-5 or SOT23-5. With its small footprint and reduced component count for gain stage, it en- ables the design of smaller portable electronic products, such as cellular phones, pagers, PDAs, PCMCIA cards, etc. In addition, the integration solution minimizes printed circuit board stray capacitance, and reduces the complexity of cir- cuit design. The core op amp of this family is National’s LMV321. 1.0 Supply Bypassing The application circuits in this datasheet do not show the power supply connections and the associated bypass ca- pacitors for simplification. When the circuits are built, it is al- ways required to have bypass capacitors. Ceramic disc ca- pacitors (0.1µF) or solid tantalum (1µF) with short leads, and located close to the IC are usually necessary to prevent in- terstage coupling through the power supply internal imped- ance. Inadequate bypassing will manifest itself by a low fre- quency oscillation or by high frequency instabilities. Sometimes, a 10µF (or larger) capacitor is used to absorb low frequency variations and a smaller 0.1µF disc is paral- leled across it to prevent any high frequency feedback through the power supply lines. 2.0 Input Voltage Range The input voltage should be within the supply rails. The ESD protection circuitry at the input of the device includes a diode between the input pin and the negative supply pin. Driving the input more than 0.6V (at 25˚C) beyond the negative sup- ply will turn on the diode and cause signal distortions. For applications that require sensing voltages beyond the nega- tive rail, use the LMV111 with external gain setting resistors. Inverting Small Signal Pulse Response LMV105 DS101234-40 Inverting Small Signal Pulse Response LMV110 DS101234-42 Slew Rate vs. Supply Voltage DS101234-43 www.national.com 8 |
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