National Manuals

The ADC08060 is a low-power, 8-bit, monolithic analog-to-digital converter with an on-chip track-and-hold circuit. Optimized for low cost, low power, small size and ease of use, this product operates at conversion rates of 20 MSPS to 70 MSPS with outstanding dynamic performance over its full operating range while consuming just 1.3 mW per MHz of clock frequency. That's just 78 mW of power at 60 MSPS. Raising the PD pin puts the ADC08060 into a Power Down mode where it consumes just 1 mW. The unique architecture achieves 7.5 Effective Bits with 25 MHz input frequency. The excellent DC and AC characteristics of this device, together with its low power consumption and single +3V supply operation, make it ideally suited for many imaging and communications applications, including use in portable equipment. Furthermore, the ADC08060 is resistant to latch-up and the outputs are short-circuit proof. The top and bottom of the ADC08060's reference ladder are available for connections, enabling a wide range of input possibilities. The digital outputs are TTL/CMOS compatible with a separate output power supply pin to support interfacing with 3V or 2.5V logic. The output coding is straight binary and the digital inputs (CLK and PD) are TTL/CMOS compatible. The ADC08060 is offered in a 24-lead plastic package (TSSOP) and is specified over the industrial standard range.

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This document is a datasheet for the LME49811 audio power amplifier. The amplifier has high fidelity and output power can be scaled according to the supply voltage and number of output devices. In addition, the amplifier also has a thermal shutdown circuit that will activate when the die temperature exceeds 150°C.

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LM27966 is a highly integrated charge-pump-based display LED driver from National. The device can drive up to 6 LEDs in parallel with a total output current of 180mA. Regulated internal current sources deliver excellent current and brightness matching in all LEDs. The LED driver current sources are split into two independently controlled groups. The primary group, which can be configured with 4 or 5 LEDs, can be used to backlight the main phone display. An additional, independently controlled led driver is provided for driving an indicator or other general purpose LED function. The LM27966 has an I2C compatible interface that allows the user to independently control the brightness on each bank of LEDs. The device provides excellent efficiency without the use of an inductor by operating the charge pump in a gain of 3/2, or in Pass-Mode. The proper gain for maintaining current regulation is chosen, based on LED forward voltage, so that efficiency is maximized over the input voltage range. The LM27966 is available in National’s small 24-pin Lead- less Leadframe Package (LLP-24).

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DS91D176/DS91C176 100 MHz Single Channel M-LVDS Transceivers, designed for applications that utilize multipoint networks (e.g. clock distribution in ATCA and uTCA based systems)

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LMH1981 is a high performance multi-format sync sep- arator ideal for use in a wide range of video applications, such as broadcast and professional video equipment and HDTV/DTV systems. The input accepts standard analog SD/ED/HD video signals with either bi-level or tri-level sync, and the outputs provide all of the critical timing signals in CMOS logic, which swing from rail-to-rail (VCC and GND) including Composite, Hori- zontal, and Vertical Syncs, Burst/Back Porch Timing, Odd/Even Field, and Video Format Outputs. HSync features very low jitter on its leading (falling) edge, minimizing external cir- cuitry needed to clean and reduce jitter in subsequent clock generation stages. The LMH1981 automatically detects the input video format, eliminating the need for programming using a microcontroller, and applies precise 50% sync slicing to ensure accurate sync extraction at OH, even for inputs with irregular amplitude from improper termination or transmission loss. Its unique Video Format Output conveys the total horizontal line count per field as an 11-bit binary serial data stream, which can be decoded by the video system to determine the input video format and enable dynamic adjustment of system parameters, i.e.: color space or scaler conversions. The LMH1981 is available in a 14-pin TSSOP package and operates over a temperature range of −40°C to +85°C.

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The LM2941 positive voltage regulator is capable of sourcing 1A of output current with a typical dropout voltage of 0.5V and a maximum of 1V over the entire temperature range. It includes a quiescent current reduction circuit that reduces the ground pin current when the differential between the input voltage and the output voltage exceeds approximately 3V. The quiescent current with 1A of output current and an input-output differential of 5V is only 30mA. Higher quiescent currents only exist when the regulator is in the dropout mode (VIN - VOUT ≤ 3V). The LM2941 and all regulated circuitry are protected from reverse battery installations or two-battery jumps. During line transients, such as load dump when the input voltage can momentarily exceed the specified maximum operating voltage, the regulator will automatically shut down to protect both the internal circuits and the load. Familiar regulator features such as short circuit and thermal overload protection are also provided.

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LM3678 is a high-performance, miniature 1.5A step-down DC-DC converter for handheld applications.

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

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LMV651/LMV652/LMV654 are National's high performance, low power operational amplifier ICs implemented with National's advanced VIP50 process. This family of parts features 12 MHz of bandwidth while consuming only 116 μA of current, which is an exceptional bandwidth to power ratio in this op amp class.

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This datasheet provides detailed information on the features and characteristics of the LM4908 10kV ESD Rated, Dual 120 mW Headphone Amplifier.

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The LM22678 series of regulators are monolithic integrated circuits which provide all of the active functions for a step-down (buck) switching regulator capable of driving up to 5A loads with excellent line and load regulation characteristics. High efficiency (>90%) is obtained through the use of a low ON-resistance N-channel MOSFET. The series consists of a fixed 5V output and an adjustable version. The SIMPLE SWITCHER® concept provides for an easy to use complete design using a minimum number of external components and National’s WEBENCH® design tool. National’s WEBENCH® tool includes features such as external component calculation, electrical simulation, thermal simulation, and Build-It boards for easy design-in. The switching clock frequency is provided by an internal fixed frequency oscillator which operates at 500 kHz. The LM22678 series also has built in thermal shutdown, current limiting and an enable control input that can power down the regulator to a low 25 µA quiescent current standby condition.

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lm120/lm320 series 3-terminal negative regulators

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The LM35 series are precision integrated-circuit temperature sensors, whose output voltage is linearly proportional to the Celsius (Centigrade) temperature. The LM35 thus has an advantage over linear temperature sensors calibrated in ˚ Kelvin, as the user is not required to subtract a large constant voltage from its output to obtain convenient Centi- grade scaling.

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The DS32EV400 programmable quad equalizer provides compensation for transmission medium losses and reduces the medium-induced deterministic jitter for four NRZ data channels.

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The LP2966 is a dual ultra low-dropout regulator from ON Semiconductor that operates from a +2.70V to +7.0V input supply. The rated output current is 150mA, and the dropout voltage is extremely low, making it very suitable for battery powered and portable applications. The LP2966 features independent shutdown capability for each LDO and low noise performance with low ground pin current in an extremely small MSOP-8 package. A wide range of preset voltage options are available for each output. In addition to the voltage combinations listed in the ordering information table, many more are available upon request with minimum orders. In all, 256 voltage combinations are possible.

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LM22672 1A SIMPLE SWITCHER® Step-Down Voltage Regulator with Features:

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The LM4861 is a 1.1W audio power amplifier designed for low-power portable systems. It features an externally controlled, low-power consumption shutdown mode and an internal thermal shutdown protection mechanism.

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The ADC084S021 is a low-power, four-channel CMOS 8-bit analog-to-digital converter with a high-speed serial interface.

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LM22670 is a 3A simple switch voltage regulator produced by National Semiconductor. It has a built-in low-resistance N-channel MOSFET, the output current can reach 3A, and has good line and load regulation characteristics. The switching frequency can be adjusted with an external resistor or synchronized to an external clock. It has internal thermal shutdown, current limiting and enable control input. The input voltage range is 4.5V to 42V.

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This document introduces LME49810 high fidelity audio power amplifier driver, which has very high output voltage range, high output drive current, high PSRR and low THD+N. The chip also has thermal shutdown and mute function, customizable external compensation, and scalable output power.

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