National Manuals

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 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.

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.

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.

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.

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.

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 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 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 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 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 LM2672 series is a monolithic integrated circuit that serves as a high-efficiency 1A step-down voltage regulator. It offers excellent line and load regulation, and is available in fixed output voltages of 3.3V, 5.0V, 12V, as well as an adjustable output version. The LM2672 includes various features such as internal frequency compensation, fixed frequency oscillator, external shutdown, soft-start, and frequency synchronization. Operating at a switching frequency of 260 kHz, it allows for smaller sized filter components compared to lower frequency regulators. With its high efficiency (>90%), the LM2672 only requires copper traces on the PCB for heat sinking. The LM2672 is compatible with a range of standard inductors, diodes, and capacitors for simplified switch-mode power supply designs.

The LMC6772 is a dual bipolar micropower voltage follower with open drain output. The working voltage range is wide, the output voltage range is from the positive and negative supply rails, and it is suitable for single power supply systems. The device has the characteristics of low current consumption, short circuit protection, high response speed, and is suitable for laptop computers, mobile phones, metering systems, handheld electronic devices, RC timers, alarm monitoring circuits, window comparators, etc.

The LM2675 series of regulators are monolithic integrated circuits built with a LMDMOS process. These regulators provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1A load current with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5.0V, 12V, and an adjustable output version. Requiring a minimum number of external components, these regulators are simple to use and include patented internal frequency compensation (Patent Nos. 5,382,918 and 5,514,947) and a fixed frequency oscillator. The LM2675 series operates at a switching frequency of 260 kHz, thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Because of its very high efficiency (>90%), the copper traces on the printed circuit board are the only heat sinking needed. A family of standard inductors for use with the LM2675 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies using these advanced ICs. Also included in the datasheet are selector guides for diodes and capacitors designed to work in switch-mode power supplies. Other features include a guaranteed ±1.5% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency.