National Manuals

This document introduces the characteristics and features of the LMC555 CMOS timer

LMC272 is a low-cost CMOS dual operational amplifier with rail-to-rail output swing and an input common voltage range that extends below the negative supply. Other performance characteristics include low voltage operation, low bias current, excellent channel-to-channel isolation, good bandwidth performance and a competitive price. These devices are available in MSOP package which is about half the size of a SO-8 device. This enables the designer to fit the device in extremely small applications. The LMC272C is a direct replacement for TLC272C with performance which meets or exceeds the TLC272C's guaranteed limits in the commercial temperature range when operating from a supply of 2.7V to 15V (see Electrical Characteristics table for details). These features make this cost effective device ideal for new designs as well as for upgrading existing designs. Applications include hand-held analytic instruments, transducer amplifiers, sample and hold circuits, etc.

LMC2001 is a high precision, 6MHz rail-to-rail output operational amplifier, with excellent CMRR and PSRR, low 1/f noise, low supply current, wide gain-bandwidth product.

The LMC1992 is a monolithic integrated circuit that provides four stereo inputs, bass and treble tone controls, and volume, balance, and front-rear fader controls. These functions are digitally controlled through a three-wire communication interface. All of the LMC1992's functions are achieved with only three external capacitors per channel. It is designed for line level input signals (300 mV to 2V) and has a maximum gain of 0 dB. Low noise and distortion result from using analog switches and thin-film silicon-chromium resistor networks in the signal path. Volume and fader are at minimum and tone controls are flat when supply voltage is first applied. Additional tone control can be achieved using the LMC835 stereo 7-band graphic equalizer connected to the LMC1992's select-out-select-in external processor loop. Features include low noise and distortion, four stereo inputs, 40 volume levels including mute, 20 fader levels, all attenuators have a 2 dB of attenuation per step, front-back fade control, external processor loop, only three external components per channel, serial programming.

The LMC1983 is a monolithic integrated circuit that provides volume, balance, tone (bass and treble), loudness controls and selection between three pairs of stereo inputs. The LMC1983 is designed for line level input signals (300 mV–2V) and has a maximum gain of −0.5 dB. Low noise and distortion result from using analog switches and poly-silicon resistor networks in the signal path. Additional tone control can be achieved using the LMC835 stereo 7-band graphic equalizer connected to the LMC1983’s SELECT OUT/SELECT IN external processor loop.

LMC1982 is a monolithic integrated circuit that provides volume, balance, tone (bass and treble), enhanced stereo, and loudness controls and selection between two pairs of stereo inputs.

The LP2950 and LP2951 are micropower voltage regulators with very low quiescent current and very low dropout voltage, making them ideal for battery-powered systems. The LP2950/LP2951 has been carefully designed to have a tight initial tolerance, excellent load and line regulation, and a very low output voltage temperature coefficient, making it suitable as a low-power voltage reference.

The LMH6723/LMH6724/LMH6725 is a single/dual/quad 370 MHz 1 mA current feedback op amp. It provides a 260 MHz small signal bandwidth at a gain of +2 V/V and a 600 V/µs slew rate while consuming only 1 mA from ±5V supplies. The LMH6723/LMH6724/LMH6725 supports video applications with its 0.03% and 0.11˚ differential gain and phase errors for NTSC and PAL video signals while driving a back terminated 75Ω load. The LMH6723/LMH6724/LMH6725 also offers a flat gain response of 0.1 dB to 100 MHz. Additionally, the LMH6723/LMH6724/LMH6725 can deliver 110 mA of linear output current. This level of performance, as well as a wide supply range of 4.5 to 12V, makes the LMH6723/LMH6724/LMH6725 an ideal op amp for a variety of portable applications. The LMH6723/LMH6724/LMH6725's small packages (SOIC & SOT23), low power requirement and high performance, allow it to serve a wide variety of portable applications.

The LMH6723/LMH6724/LMH6725 is a single/dual/quad 370 MHz 1 mA current feedback operational amplifier, providing a small signal bandwidth of 260 MHz, a slew rate of 600 V/µs, and consuming only 1 mA from ±5V supplies. It supports video applications with a differential gain and phase of 0.03% and 0.11˚ for NTSC and PAL video signals. The LMH6723/LMH6724/LMH6725 also offers a flat gain response of 0.1 dB to 100 MHz and can deliver 110 mA of linear output current. It is suitable for a variety of portable applications.

LMH6718 is a dual, low cost high speed (130MHz) buffer which features user programmable gains of +2, +1, and -1V/V

The LMH6715 is a dual wideband video op amp that combines high speed, low power consumption, low noise, and low distortion. It provides a small signal bandwidth of 400MHz at a gain of +2V/V and a slew rate of 1300V/µs. The LMH6715 offers exceptional video performance with 0.02% and 0.02˚ differential gain and phase errors for driving up to four back terminated 75Ω loads. Additionally, each amplifier can deliver 70mA of output current. It is suitable for high density, broadcast quality video systems, as well as applications such as differential line drivers and receivers.

LMH6714/6720/6722 is a high speed video op amp, which features 400MHz small signal bandwidth, 1800V/µs slew rate and 0.01% and 0.01˚ differential gain and phase errors.

The LMH6704 is a high-performance, high-dynamic-range video amplifier from National Semiconductor that provides +1, +2, and -1 V/V user-programmable gain. With a 650 MHz small-signal bandwidth (AV = +1), full power gain flatness to 200 MHz, and excellent differential gain and phase, the LMH6704 is optimized for video applications. The LMH6704 is fabricated using National Semiconductor's proprietary high-speed complementary bipolar process and employs National Semiconductor's proven current feedback circuit architectures. It is available in 8-pin SOIC and 6-pin SOT23 packages.

LMH6702 is a ultra low distortion, wideband op amp from National Semiconductor. It has 720MHz bandwidth, 10-bit distortion levels through 60MHz, 1.83nV/ input referred noise and 12.5mA supply current. It is ideal for high-speed flash A/D and D/A converters.