National Manuals

The ADC1173 is a low power, 15 MSPS analog-to-digital converter that digitizes signals to 8 bits while consuming just 33 mW of power (typ). The ADC1173 uses a unique architecture that achieves 7.6 Effective Bits. Output formatting is straight binary coding. The excellent DC and AC characteristics of this device, together with its low power consumption and +3V single supply operation, make it ideally suited for many video, imaging and communications applications, including use in portable equipment. Furthermore, the ADC1173 is resistant to latch-up and the outputs are short-circuit proof. The top and bottom of the ADC1173’s reference ladder is available for connections, enabling a wide range of input possibilities.

The LM1815 is an adaptive sense amplifier and default gating circuit for motor control applications. It provides a one-shot pulse output whose leading edge coincides with the negative-going zero crossing of a ground referenced input signal such as from a variable reluctance magnetic pick-up coil.

The DS90LV018A is a 3V LVDS single CMOS differential line receiver designed for applications requiring ultra low power dissipation, low noise and high data rates. The device is designed to support data rates in excess of 400 Mbps (200 MHz) utilizing Low Voltage Differential Signaling (LVDS) technology. The DS90LV018A accepts low voltage (350 mV typical) differential input signals and translates them to 3V CMOS output levels. The receiver also supports open, shorted and terminated (100Ω) input fail-safe. The receiver output will be HIGH for all fail-safe conditions. The DS90LV018A has a flow-through design for easy PCB layout. The DS90LV018A and companion LVDS line driver provide a new alternative to high power PECL/ECL devices for high speed point-to-point interface applications.

The LP2997 DDR-II Termination Regulator is a digital regulator produced by National Semiconductor Corporation. The regulator adopts a linear topology and can provide 500mA of continuous current and transient current peaks up to 900mA, and has low output voltage offset, source and sink current, no external resistors and other features. In addition, LP2997 also has the Suspend to Ram (STR) function, which can tri-state the VTT output when SD pin is pulled low, but VREF will remain active.

The ADC14L020 is a low power monolithic CMOS analog-to-digital converter capable of converting analog input signals into 14-bit digital words at 20 MSPS. It provides excellent dynamic performance and a 150 MHz Full Power Bandwidth.

The ADC12L030 family is a 12-bit plus sign successive approximation A/D converter with serial I/O and configurable input multiplexers. These devices are fully tested with a single 3.3V power supply. The ADC12L032, ADC12L034 and ADC12L038 have 2, 4 and 8 channel multiplexers, respectively. Differential multiplexer outputs and A/D inputs are available on the MUXOUT1, MUXOUT2, A/DIN1 and A/DIN2 pins. The ADC12L030 has a two channel multiplexer with the multiplexer outputs and A/D inputs internally connected. On request, these A/Ds go through a self calibration process that adjusts linearity, zero and full-scale errors to less than ±1⁄2 LSB each. The analog inputs can be configured to operate in various combinations of single-ended, differential, or pseudo-differential modes. A fully differential unipolar analog input range (0V to +3.3V) can be accommodated with a single +3.3V supply. In the differential modes, valid outputs are obtained even when the negative inputs are greater than the positive because of the 12-bit plus sign two’s compliment output data format. The serial I/O is configured to comply with NSC’s MICROWIRE™ and Motorola’s SPI standards. For voltage references, see the LM4040 or LM4041 data sheets.

LM2590HV is a SIMPLE SWITCHER® Power Converter that operates at 150 kHz and can output 1A of current. It has excellent line and load regulation performance. This series of regulators has additional supervisory and performance features, requires the minimum number of external components, is easy to use, and includes internal frequency compensation, improved line and load specifications, a fixed-frequency oscillator, Shutdown/Soft-start, output error flag, and flag delay.

LM22673 3A SIMPLE SWITCHER is a step-down voltage regulator with adjustable soft-start and current limit designed by National Semiconductor Corporation. It uses internal compensation voltage mode control, input voltage range is 4.5V to 42V, output voltage is adjustable, and it has over-temperature shutdown and current limiting function.

The LM5008 is a high-voltage step-down switching regulator from TI. It integrates a 100V N-channel buck switch, an internal VCC regulator, and requires no external compensation. It is highly efficient and low-noise, and is suitable for a variety of voltage and current applications.

The LMX243x devices are high performance frequency synthesizers with integrated dual modulus prescalers. The LMX243x devices are designed for use as RF and IF local oscillators for dual conversion radio transceivers.

DS90LV032A is a 3V LVDS quad CMOS differential line receiver from Texas Instruments (TI). It uses low voltage differential signaling (LVDS) technology and supports data rates of more than 400 Mbps (200 MHz). DS90LV032A receives low voltage (350 mV) differential input signals and converts them to 3V CMOS output levels. The receiver supports TRI-STATE® function that can be used for multiplexing outputs. The receiver also supports open, shorted, and terminated (100 Ω) input fail-safe. The receiver output will be high for all fail-safe conditions. DS90LV032A and companion LVDS line driver (e.g. DS90LV031A) provide a new alternative to high power PECL/ECL devices for high speed point-to-point interface applications.

The LM1875 is a 20W audio power amplifier produced by National Semiconductor. It is suitable for consumer electronics products such as high-fidelity audio and power amplifiers. The product adopts a monolithic design, with large output power, low distortion, wide bandwidth, large output voltage swing, high current capacity, and wide supply range.

The ADC102S051 is a low-power, two-channel CMOS 10-bit analog-to-digital converter from ADI. It features high sampling rate, variable power management and other features. It is suitable for portable systems, remote data acquisition and other applications.

LM4549B AC ’97 Rev 2.1 Multi-Channel Audio Codec with Sample Rate Conversion and National 3D Sound

The LM4121 is a precision bandgap voltage reference available in a fixed 1.25V and adjustable version with up to 5 mA current source and sink capability. This series reference operates with input voltages as low as 1.8V and up to 12V consuming 160 µA (Typ.) supply current. In power down mode, device current drops to less than 2 µA. The LM4121 comes in two grades A and Standard. The best grade devices (A) have an initial accuracy of 0.2%, while the standard have an initial accuracy of 0.5%, both with a tempco of 50ppm/˚C guaranteed from −40˚C to +125˚C. The very low operating voltage, low supply current and power-down capability of the LM4121 makes this product an ideal choice for battery powered and portable applications. The device performance is guaranteed over the industrial temperature range (−40˚C to +85˚C), while certain specs are guaranteed over the extended temperature range (−40˚C to +125˚C). Please contact National for full specifications over the extended temperature range. The LM4121 is available in a standard 5-pin SOT-23 package.