National Manuals (Industrial)

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LMH0340, LMH0040, LMH0070, LMH0050 are National's 3 Gbps SDI Serializer and Cable Driver series, supporting 5-bit LVDS interface with FPGAs. These devices comply with DVB-ASI, SMPTE 259M-C, SMPTE 292M and SMPTE 424M standards.

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LMH6555 is a low distortion 1.2GHz differential driver with 53dB SFDR at 750MHz. The device features a fixed gain of 13.7dB, an input to the device allows the output common mode voltage to be set independent of the input common mode voltage in order to simplify the interface to high speed differential input ADCs. A unique architecture allows the device to operate as a fully differential driver or as a single-ended to differential converter. The outstanding linearity and drive capability (100Ω differential load) of this device are a perfect match for driving high speed analog-to-digital converters. When combined with the ADC081000/ ADC081500 (single or dual ADC), the LMH6555 forms an excellent 8-bit data acquisition system with analog bandwidths exceeding 750MHz.

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The LM20323 is a 36V, 3A synchronous buck regulator from TI that operates at a frequency of up to 500kHz. The device uses current mode control and requires only two external components for compensation, providing both high performance and ease of use. LM20323's input voltage range is 4.5V to 36V, making it suitable for high voltage systems. The device features internal overvoltage protection (OVP) and overcurrent protection (OCP) circuits to improve system reliability. A precision enable pin and integrated UVLO allow the device to be tightly controlled and sequenced during startup. Startup inrush currents are limited by both an internally fixed and externally adjustable soft-start circuit. Fault detection and supply sequencing are possible with the integrated power good (PGOOD) circuit. LM20323 is designed to perform well in multi-rail power supply architectures. Using the SS/TRK pin, the device's output voltage can be configured to track a higher voltage power rail. If the LM20323 is pre-biased at startup, it will not sink current to pull the output low until the internal soft-start ramp exceeds the voltage at the feedback pin. LM20323 is offered in an exposed pad 20-pin eTSSOP package that can be directly soldered to the PCB, eliminating the need for bulky heatsinks.

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The LM5118 is a wide voltage range Buck-Boost controller from TI that uses the minimum external components to achieve high performance and high cost-effective Buck-Boost regulator. When the input voltage is less than the output voltage, the LM5118 operates in Buck mode, and when the input voltage is greater than the output voltage, the LM5118 operates in Buck-Boost mode. The LM5118 integrates high side and low side MOSFET drivers, supports current mode control, and provides overcurrent protection, thermal shutdown and enable input protection functions.

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The LM9022 is a National Semiconductor product that is a vacuum fluorescent display filament driver. It is capable of delivering 2 watts of continuous average power into a 10 ohm filament load when powered by a 5V power supply. The LM9022's micropower shutdown mode (IQ = 0.6µA, typical) is activated when VDD is applied to the SHUTDOWN pin, which can be used to conserve power in portable applications. Additional LM9022 features include thermal shutdown protection, unity-gain stability, and external gain set.

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The LM2734Z/LM2734ZQ Thin SOT23 1A Load Step-Down DC-DC Regulator is a monolithic, high frequency, PWM step-down DC/DC converter assembled in a 6-pin Thin SOT23 and LLP non pull back package. It provides all the active functions to provide local DC/DC conversion with fast transient response and accurate regulation in the smallest possible PCB area. With a minimum of external components and online design support through WEBENCH®™, the LM2734Z is easy to use. The ability to drive 1A loads with an internal 300mΩ NMOS switch using state-of-the-art 0.5µm BiCMOS technology re- sults in the best power density available. The world class control circuitry allows for on-times as low as 13ns, thus sup- porting exceptionally high frequency conversion over the en- tire 3V to 20V input operating range down to the minimum output voltage of 0.8V. Switching frequency is internally set to 3MHz, allowing the use of extremely small surface mount inductors and chip capacitors. Even though the operating fre- quency is very high, efficiencies up to 85% are easy to achieve. External shutdown is included, featuring an ultra-low stand-by current of 30nA. The LM2734Z utilizes current-mode control and internal compensation to provide high-perfor- mance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to re- duce inrush current, pulse-by-pulse current limit, thermal shutdown, and output overvoltage protection.

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DS15BA101 is a high-performance differential buffer from National Semiconductor. It supports data rates up to 1.5 Gbps, supports differential and single-ended inputs, and has adjustable output voltage. It is powered by a single 3.3V supply and operates over a temperature range of -40°C to +85°C. It is available in a 3x3 mm LLP-8 package.

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LP2957/LP2957A 5V low-dropout regulator for µP applications

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The LM2854 is a 4A 500 kHz/1 MHz Synchronous SIMPLE SWITCHER® Buck Regulator that offers exceptional power conversion efficiency, line and load regulation, and output accuracy. It can accept an input voltage rail between 2.95V and 5.5V and deliver an adjustable and highly accurate output voltage as low as 0.8V.

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dp8573a real time clock (rtc)

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The LM81 is a highly integrated data acquisition system for hardware monitoring of servers, Personal Computers, or virtually any microprocessor-based system. It can be used to monitor power supply voltages, temperatures, and fan speeds in a PC. Actual values for these inputs can be read at any time. Programmable WATCHDOG limits in the LM81 activate a fully programmable and maskable interrupt system with two outputs (INT and T_CRIT_). The LM81 has an on-chip digital output temperature sensor with 9-bit or 12-bit resolution, a 6 analog input ADC with 8-bit resolution, and an 8-bit DAC. Two fan tachometer outputs can be measured with the LM81’s FAN1 and FAN2 inputs. The DAC, with a 0 to 1.25V output voltage range, can be used for fan speed control. Additional inputs are provided for Chassis Intrusion detection circuits and VID monitor inputs. The LM81 has a Serial Bus interface that is compatible with SMBus™.

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The LM12454/LM12458/LM12H458 12-Bit + Sign Data Acquisition System with Self-Calibration is a highly integrated data acquisition system produced by TI. It operates on just 5V and combines a fully-differential self-calibrating (correcting linearity and zero errors) 13-bit (12-bit + sign) analog-to-digital converter (ADC) and sample-and-hold (S/H) with extensive analog functions and digital functionality.

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The LM78 Microprocessor System Hardware Monitor is a highly integrated Data Acquisition system for hardware monitoring of servers, Personal Computers, or virtually any microprocessor based system. In a PC, the LM78 can be used to monitor power supply voltages, temperatures, and fan speeds. Actual values for these inputs can be read at any time, and programmable WATCHDOG limits in the LM78 activate a fully programmable and maskable interrupt system with two outputs. The LM78 has an on-chip temperature sensor, 5 positive analog inputs, two inverting inputs (for monitoring negative voltages), and an 8-bit ADC. An input is provided for the overtemperature outputs of additional temperature sensors and this is linked to the interrupt system. The LM78 provides inputs for three fan tachometer outputs. Additional inputs are provided for Chassis Intrusion detection circuits, VID monitor inputs, and chainable interrupt. The LM78 provides both ISA and Serial Bus interfaces. A 32-byte auto-increment RAM is provided for POST (Power On Self Test) code storage.

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LMV331 is a single channel comparator, LMV393 is a dual channel comparator, and LMV339 is a quad channel comparator. They are low voltage (2.7-5V) versions of LM393/339, which are specified at 5-30V. LMV331 offers space-saving SC70-5 and SOT23-5 packages. LMV393 is available in 8-pin SOIC and 8-pin MSOP packages. LMV339 is available in 14-pin SOIC and 14-pin TSSOP packages. LMV331/393/339 are the most cost-effective solution in circuit design for portable consumer products where space, low voltage, low power, and price are the primary specifications. They offer specifications that meet or exceed the familiar LM393/339, but with only a fraction of the supply current. The chips are built with National's advanced Submicron Silicon-Gate BiCMOS process. LMV331/393/339 have bipolar input and output stages for improved noise performance.

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The LM4921 is a low voltage I2S 16-bit stereo DAC with stereo headphone power amplifiers and volume control. It is primarily designed for demanding applications in mobile phones and other portable communication device applications.

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The LM4674 is a single supply, high efficiency, 2.5W/channel, filterless switching audio amplifier. A low noise PWM architecture eliminates the output filter, reducing external component count, board area consumption, system cost, and simplifying design. The LM4674 is designed to meet the demands of mobile phones and other portable communication devices. Operating from a single 5V supply, the device is capable of delivering 2.5W/channel of continuous output power to a 4Ω load with less than 10% THD+N. Flexible power supply requirements allow operation from 2.4V to 5.5V. The LM4674 features high efficiency compared to conventional Class AB amplifiers. When driving an 8Ω speaker from a 3.6V supply, the device features 85% efficiency at PO = 500mW. Four gain options are pin selectable through the G0 and G1 pins. Output short circuit protection prevents the device from being damaged during fault conditions. Superior click and pop suppression eliminates audible transients on power-up/down and during shutdown. Independent left/right shutdown control maximizes power savings in mixed mono/stereo applications.

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The LP2980 is a 50 mA, fixed-output voltage regulator designed specifically to meet the requirements of battery-powered applications. It delivers unmatched performance in all specifications critical to battery-powered designs using an optimized VIP™ process.

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LM317L 3-Terminal Adjustable Regulator General Description

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ADC101C021/ADC101C027 I2C-Compatible, 10-Bit Analog-to-Digital Converter (ADC) with Alert Function

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