National Manuals

The LM4952 is a dual audio power amplifier primarily designed for demanding applications in flat panel monitors and TV's. It is capable of delivering 3.1 watts per channel to a 4Ω single-ended load with less than 1% THD+N when powered by a 12VDC power supply. It has independent volume control for high and low frequencies, internal temperature protection function, short circuit protection function, and no noise when switching on and off.

The LM3722/LM3723/LM3724 microprocessor supervisory circuits monitor the power supplies in microprocessor and digital systems. They provide a reset to the microprocessor during power-up, power-down, brown-out conditions, and manual reset. The LM3722/LM3723/LM3724 asserts a reset signal whenever the supply decreases below the factory-programmed reset threshold for at least 100 ms. The reset signal remains asserted for 190 ms after VCC rises above the threshold. The LM3722 has an active-low RESET push-pull output. The LM3723 has an active-high RESET push-pull output. The LM3724 has an active-low open-drain RESET output. Three standard reset voltage options are available, suitable for monitoring 5V, 3.3V, and 2.5V supply voltages. Additional reset voltages are also available; contact National Semiconductor for details. With a low supply current of only 6µA, the LM3722/LM3723/LM3724 are ideal for use in portable equipment. The LM3722/LM3723/LM3724 are available in the 5-pin SOT23 package.

The LM7372 is a high speed dual voltage feedback amplifier that has the slewing characteristic of current feedback amplifiers; yet it can be used in all traditional voltage feedback amplifier configurations. The LM7372 is stable for gains as low as +2 or −1. It provides a very high slew rate at 3000V/µs and a wide gain bandwidth product of 120MHz, while consuming only 6.5mA/per amplifier of supply current. It is ideal for video and high speed signal processing applications such as xDSL and pulse amplifiers. With 150mA output current, the LM7372 can be used for video distribution, as a transformer driver or as a laser diode driver. Operation on ±15V power supplies allows for large signal swings and provides greater dynamic range and signal-to- noise ratio. The LM7372 offers high SFDR and low THD, ideal for ADC/DAC systems. In addition, the LM7372 is specified for ±5V operation for portable applications. The LM7372 is built on National's Advance VIP® III (Vertically integrated PNP) complementary bipolar process.

National’s LMV831, LMV832, and LMV834 are CMOS input, low power op amp IC's, providing a low input bias current, a wide temperature range of −40°C to 125°C and exceptional performance making them robust general purpose parts. Additionally, the LMV831/LMV832/LMV834 are EMI hardened to minimize any interference so they are ideal for EMI sensitive applications. The unity gain stable LMV831/LMV832/LMV834 feature 3.3 MHz of bandwidth while consuming only 0.24 mA of current per channel. These parts also maintain stability for capacitive loads as large as 200 pF. The LMV831/LMV832/LMV834 provide superior performance and economy in terms of power and space usage. This family of parts has a maximum input offset voltage of 1 mV, a rail-to-rail output stage and an input common-mode voltage range that includes ground. Over an operating range from 2.7V to 5.5V the LMV831/LMV832/LMV834 provide a PSRR of 93 dB, and a CMRR of 91 dB. The LMV831 is offered in the space saving 5-Pin SC70 package, the LMV832 in the 8-Pin MSOP and the LMV834 is offered in the 14-Pin TSSOP package.

DS90C385/DS90C365 is a LVDS transmitter for Flat Panel Display (FPD) Link. It supports maximum 85MHz, and can convert 28-bit LVCMOS/LVTTL data to 4 LVDS data streams. It supports rising edge and falling edge strobe, and uses 64-ball 0.8mm pitch FBGA package, which can reduce 44% PCB area compared with TSSOP package.

LP38691-ADJ/LP38693-ADJ 500mA Low Dropout CMOS Linear Regulators with Adjustable Output Stable with Ceramic Output Capacitors

LM3691 is a high-accuracy, miniature, 1A step-down DC-DC converter from TI that is optimized for powering ultra-low voltage circuits from a single Li-Ion cell or three cell NiMH/NiCd batteries. It provides up to 1A load current over an input voltage range from 2.3V to 5.5V. There are several different fixed voltage output options available. LM3691 has a mode-control pin that allows the user to select Forced PWM mode or ECO mode that changes modes between gated PWM mode and PWM automatically depending on the load. In ECO mode, LM3691 offers superior efficiency and very low Iq under light load conditions. ECO mode extends the battery life through reduction of the quiescent current during light load conditions and system standby. LM3691 is available in a 6-bump micro SMD package. Only three external surface-mount components are required: a 1μH inductor, a 4.7μF input capacitor and a 4.7μF output capacitor.

This document describes the features and characteristics of CD4023BM and CD4025BM, which are buffered triple 3-input NAND gate and buffered triple 3-input NOR gate, respectively. These gates are constructed with complementary metal-oxide-semiconductor (CMOS) integrated circuits, and have equal source and sink current capabilities, conforming to standard B series output drive. The devices also have buffered outputs which improve transfer characteristics by providing very high gain. All inputs are protected against static discharge with diodes to VDD and VSS.

The LMD18201 is a 3A H-Bridge designed for motion control applications. The device is built using a multi-technology process which combines bipolar and CMOS control circuitry with DMOS power devices on the same monolithic structure. The H-Bridge configuration is ideal for driving DC and step-per motors. The LMD18201 accommodates peak output currents up to 6A. Current sensing can be achieved via a small sense resistor connected in series with the power ground lead. For current sensing without disturbing the path of current to the load, the LMD18200 is recommended.

The LMD18245 is a 3A, 55V DMOS full-bridge motor driver that incorporates all the circuitry required to drive and control current in a brushed type DC motor or one phase of a bipolar stepper motor.

This document introduces the LMP7721, a precision amplifier with an ultra-low input bias current of 3 fA, a supply voltage range of 1.8V to 5.5V, and is ideal for battery-powered portable applications.

ADC121C021/ADC121C027 I2C-compatible, 12-Bit Analog-to-Digital Converter (ADC) with Alert Function

LP38690/LP38692 1A Low Dropout CMOS Linear Regulators Stable with Ceramic Output Capacitors

The LM386 is a low voltage audio power amplifier designed for use in low volt- age consumer applications