National Manuals

CLC031A is a video deserializer/descrambler produced by Cirrus Logic, which supports SMPTE292M, 259M, and 344M standards

LMH6714/6720/6722 is a high performance video op amp from National. It provides 400MHz bandwidth and 1800V/µs slew rate with only 5.6mA power consumption. This product series is ideal for broadcast quality video systems. Its small size, low power, low noise and distortion also make it suitable for portable RF applications.

LM6511 180ns 3V Comparator is ideal for analog-digital interface circuitry when only a +3V or +3.3V supply is avail- able

This document introduces the features and characteristics of LM3671 step-down DC-DC converter. LM3671 step-down DC-DC converter is designed for power supply low voltage circuits from a single Li-Ion cell battery and input voltage rails from 2.7V to 5.5V. The chip provides up to 600mA load current, over the entire input voltage range. There are several different fixed voltage output options available as well as an adjustable output voltage version. The device offers superior features and performance for mobile phones and similar portable systems. Automatic in- telligent switching between PWM low-noise and PFM low- current mode offers improved system control. During PWM mode, the device operates at a fixed-frequency of 2 MHz (typ). Hysteretic PFM mode extends the battery life by re- ducing the quiescent current to 16 µA (typ) during light load and standby operation. Internal synchronous rectification provides high efficiency during PWM mode operation. In shutdown mode, the device turns off and reduces battery consumption to 0.01 µA (typ). The LM3671 is available in SOT23-5 and a tiny 5-bump micro SMD packages in leaded (PB) and lead-free (NO PB) versions. A high switching frequency of 2 MHz (typ) allows use of tiny surface-mount components. Only three external surface-mount components, an inductor and two ceramic capacitors, are required.

The LMS1487 is a low power differential bus/line transceiver designed for high speed bidirectional data communication on multipoint bus transmission lines. It meets ANSI Standards TIA/EIA RS422-B, TIA/EIA RS485-A and ITU recommendation and V.11 and X.27. The LMS1487 combines a TRI-STATE™ differential line driver and differential input receiver, both of which operate from a single 5.0V power supply. The driver and receiver have an active high and active low, respectively, that can be externally connected to function as a direction control. The driver and receiver differential inputs are internally connected to form differential input/output (I/O) bus ports that are designed to offer minimum loading to bus whenever the driver is disabled or when VCC = 0V. These ports feature wide positive and negative common mode voltage ranges, making the device suitable for multipoint applications in noisy environments. The LMS1487 is available in a 8-Pin SOIC and 8-pin DIP packages. It is a drop-in socket replacement to Maxim’s MAX1487.

The CLC5957 is a monolithic 12-bit, 70 MSPS analog-to-digital converter. It is optimized for use in IF-sampled digital receivers and other applications that require high resolution, high sampling rate, wide dynamic range, low power dissipation, and compact size. The CLC5957 features include differential analog inputs, low jitter differential universal clock inputs, a low distortion track-and-hold with 0-300MHz input bandwidth, a bandgap voltage reference, data valid clock output, TTL compatible CMOS (3.3V or 2.5V) programmable output logic, and a proprietary 12-bit multi-stage quantizer. It is fabricated on the ABIC-V 0.8 micron BiCMOS process. The CLC5957 has a spurious free dynamic range (SFDR) of 74dBc and a signal to noise ratio (SNR) of 67dB. The wideband track-and-hold allows sampling of IF signals up to 250MHz. It produces a two-tone, dithered, SFDR of 83dBFS at a 75MHz input frequency. The differential analog input provides excellent common mode rejection, while the differential universal clock inputs minimize jitter. The 48-pin TSSOP package is ideal for space-constrained applications. The CLC5957 operates from a single +5V power supply and is guaranteed to operate over the industrial temperature range of -40˚C to +85˚C. National Semiconductor tests each part to verify compliance with the guaranteed specifications.

LM136-2.5/LM236-2.5/LM336-2.5V Precision 2.5V Zener Diodes

The LM5116 is a synchronous buck controller intended for step-down regulator applications from a high voltage or widely varying input supply

This document introduces the characteristics of ADC14L040 14-Bit, 40 MSPS, 235 mW A/D Converter, including single +3.3V supply, 14-bit resolution, 40 MSPS sampling rate, 150 MHz bandwidth, etc.

The LM2722 is a high-speed synchronous/asynchronous MOSFET driver designed for use with multi-phase controllers. It differs from the LM2726 by changing the functionality of the SYNC_EN pin to control between synchronous and asynchronous operations. The LM2722 simultaneously drives both top and bottom MOSFETs with a typical 20ns dead time and built-in cross-conduction protection circuitry. Asynchronous operations can be more efficient at very light loads, making it advantageous in portable systems. Each driver of the LM2722 can handle a peak sourcing and sinking current of 3A, and the minimum pulse width is as low as 55ns.

LM117HV/LM317HV are adjustable 3-terminal positive voltage regulators capable of supplying in excess of 1.5A over a 1.2V to 57V output range. They are exceptionally easy to use and require only two external resistors to set the output voltage. Both line and load regulation are better than standard fixed regulators. The LM117HV is packaged in standard transistor packages which are easily mounted and handled. It offers full overload protection available only in IC’s, including current limit, thermal overload protection, and safe area protection. All overload protection circuitry remains fully functional even if the adjustment terminal is disconnected. Capacitors are not needed unless the device is situated more than 6 inches from the input filter capacitors, in which case an input bypass is needed. An optional output capacitor can be added to improve transient response. The adjustment terminal can be bypassed to achieve very high ripple rejection ratios which are difficult to achieve with standard 3-terminal regulators. Besides replacing fixed regulators, the LM117HV is useful in a wide variety of other applications. Supplies of several hundred volts can be regulated as long as the maximum input to output differential voltage is within the specified range.

The ADC124S101 is a low-power, four-channel CMOS 12-bit analog-to-digital converter with a high-speed serial interface.