National Manuals

LM109/LM309 5-Volt Regulator

The LM48410 is a single supply, high efficiency, 2.3W/channel, filterless switching audio amplifier. It eliminates the output filter, reducing external component count, board area consumption, system cost, and simplifying design. The device operates from a single 5V supply and delivers 2.3W/channel of continuous output power to a 4Ω load with less than 10% THD+N. It offers two logic selectable modulation schemes, fixed frequency mode, and an EMI suppressing spread spectrum mode. The LM48410 features high efficiency compared with conventional Class AB amplifiers. It includes National's 3D audio enhancement that improves stereo sound quality by affecting channel specialization and widening the perceived soundstage.

This document introduces the basic characteristics of the LMD18400 quad high side driver, including output current, voltage, temperature and other protection measures, as well as ON/OFF control, switch status readback and other functions.

DS26C31T/DS26C31M CMOS Quad TRI-STATE® Differential Line Driver is a quad differential line driver designed for digital data transmission over balanced lines, which meets all the requirements of EIA standard RS-422, while retaining the low power characteristics of CMOS.

The LM1084 is a series of low dropout voltage positive regulators with a maximum dropout of 1.5V at 5A of load current. It has the same pin-out as National Semiconductor’s industry standard LM317. The LM1084 is available in an adjustable version, which can set the output voltage with only two external resistors. It is also available in three fixed voltages: 3.3V, 5.0V and 12.0V. The fixed versions integrate the adjust resistors. The LM1084 circuit includes a zener trimmed bandgap reference, current limiting and thermal shutdown.

The ADC088S022 is a low-power, eight-channel CMOS 8-bit analog-to-digital converter specified for conversion through- put rates of 50 kSPS to 200 kSPS. The converter is based on a successive-approximation register architecture with an in- ternal track-and-hold circuit. It can be configured to accept up to eight input signals at inputs IN0 through IN7. The output serial data is straight binary and is compatible with several standards, such as SPI™, QSPI™, MICROW- IRE™, and many common DSP serial interfaces. The ADC088S022 may be operated with independent ana- log and digital supplies. The analog supply (VA) can range from +2.7V to +5.25V, and the digital supply (VD) can range from +2.7V to VA. Normal power consumption using a +3V or +5V supply is 0.9 mW and 5.5 mW, respectively. The power- down feature reduces the power consumption to 0.03 µW using a +3V supply and 0.15 µW using a +5V supply. The ADC088S022 is packaged in a 16-lead TSSOP pack- age. Operation over the extended industrial temperature range of −40˚C to +105˚C is guaranteed.

The 54ACTQ32 Quiet Series Quad 2-Input OR Gate is a product of NATIONAL SEMICONDUCTOR, which contains four 2-input OR gates and utilizes NSC Quiet Series technology to guarantee quiet output switching and improved dynamic threshold performance. The Quiet Series products also feature GTO output control and undershoot corrector, as well as a split ground bus for superior ACMOS performance.

The CLC5957 is a monolithic 12-bit, 70MSPS analog-to-digital converter optimized for use in IF-sampled digital receivers and other applications requiring high resolution, high sampling rate, wide dynamic range, low power dissipation, and compact size. It features differential analog inputs, low jitter differential universal clock inputs, a low distortion track-and-hold with 0-300MHz input bandwidth, a band-gap voltage reference, data valid clock output, TTL compatible CMOS (3.3V or 2.5V) programmable output logic, and a proprietary 12-bit multi-stage quantizer.

The LM2937 is a positive voltage regulator capable of supplying up to 500 mA of load current. The use of a PNP power transistor provides a low dropout voltage characteristic. With a load current of 500 mA the minimum input to output voltage differential required for the output to remain in regulation is typically 0.5V (1V guaranteed maximum over the full operating temperature range).

54F379 is a 4-bit register with buffered common Enable input, true and complement outputs, guaranteed 4000V minimum ESD protection, produced by National Semiconductor Corporation.

This document describes the features and characteristics of the 16-bit CAN-enabled CompactRISC microcontroller family, including high performance, integrated features, and low power consumption.

The ADC124S101 is a low-power, four-channel CMOS 12-bit analog-to-digital converter with a high-speed serial interface.

LM117HV/LM317HV are adjustable 3-terminal positive voltage regulators capable of supplying in excess of 1.5A over a 1.2V to 57V output range. They are exceptionally easy to use and require only two external resistors to set the output voltage. Both line and load regulation are better than standard fixed regulators. The LM117HV is packaged in standard transistor packages which are easily mounted and handled. It offers full overload protection available only in IC’s, including current limit, thermal overload protection, and safe area protection. All overload protection circuitry remains fully functional even if the adjustment terminal is disconnected. Capacitors are not needed unless the device is situated more than 6 inches from the input filter capacitors, in which case an input bypass is needed. An optional output capacitor can be added to improve transient response. The adjustment terminal can be bypassed to achieve very high ripple rejection ratios which are difficult to achieve with standard 3-terminal regulators. Besides replacing fixed regulators, the LM117HV is useful in a wide variety of other applications. Supplies of several hundred volts can be regulated as long as the maximum input to output differential voltage is within the specified range.

The LM2722 is a high-speed synchronous/asynchronous MOSFET driver designed for use with multi-phase controllers. It differs from the LM2726 by changing the functionality of the SYNC_EN pin to control between synchronous and asynchronous operations. The LM2722 simultaneously drives both top and bottom MOSFETs with a typical 20ns dead time and built-in cross-conduction protection circuitry. Asynchronous operations can be more efficient at very light loads, making it advantageous in portable systems. Each driver of the LM2722 can handle a peak sourcing and sinking current of 3A, and the minimum pulse width is as low as 55ns.