National Manuals (Industrial)

The LP8900 is a dual linear regulator capable of supplying 200mA output current per regulator. Designed to meet the requirements of RF/Analog circuits, the LP8900 provides low device noise, High PSRR, low quiescent current and superior line transient response figures. Using new innovative design techniques the LP8900 offers class-leading device noise performance without a noise by- pass capacitor. The LP8900 is designed to be stable with space saving ceramic capacitors as small as 0402 case size, enabling a solution size <4mm 2. Performance is specified for a -40°C to 125°C junction temperature range. Output voltage options are available between 1.2V and 3.6V, for availability please contact your local NSC sales office.

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The LM22671 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 500 mA 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 switching frequency can also be adjusted with an external resistor or synchronized to an external clock up to 1 MHz. It is also possible to self- synchronize multiple regulators to share the same switching frequency. The LM22671 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. An adjustable soft-start feature is provided by selecting an appropriate external soft-start capacitor.

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DS25CP102 is a 3.125Gbps 2x2 LVDS crosspoint switch optimized for high-speed signal routing and switching over lossy FR-4 printed circuit board backplanes and balanced cables.

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LM22679 5A SIMPLE SWITCHER® is a series of adjustable soft-start and current-limited step-down voltage regulators with a wide input voltage range, internal voltage mode control, stable low ESR ceramic capacitors, 100 mΩ N-channel MOSFET, output voltage options, and ±1.5% feedback.

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The ADC08L060 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 10 MSPS to 60 MSPS while consuming just 0.65 mW per MHz of clock frequency, or 39 mW at 60 MSPS. Raising the PD pin puts the ADC08L060 into a Power Down mode where it consumes about 1 mW. The unique architecture achieves 7.6 Effective Bits. The ADC08L060 is resistant to latch-up and the outputs are short-circuit proof. The top and bottom of the ADC08L060s 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 1.8V to 3V logic. The output coding is straight binary and the digital inputs (CLK and PD) are TTL/ CMOS compatible. The ADC08L060 is offered in a 24-lead plastic package (TSSOP) and is specified over the industrial temperature range of −40°C to +85°C.

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The DS25BR440 is a 3.125 Gbps Quad LVDS buffer opti- mized for high-speed signal routing and repeating over lossy FR-4 printed circuit board backplanes and balanced cables.

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The LM2673 series is a monolithic integrated circuit that provides all of the active functions for a step-down (buck) switching regulator capable of driving up to 3A loads with excellent line and load regulation characteristics. High efficiency (>90%) is obtained through the use of a low ON-resistance DMOS power switch. The series consists of fixed output voltages of 3.3V, 5V and 12V and an adjustable output version. The SIMPLE SWITCHER concept provides for a complete design using a minimum number of external components. A high fixed frequency oscillator (260KHz) allows the use of physically smaller sized components. The ability to reduce the input surge current at power-ON by adding a softstart timing capacitor to gradually turn on the regulator. The LM2673 series also has built-in thermal shutdown and resistor programmable current limit of the power MOSFET switch to protect the device and load circuitry under fault conditions. The output voltage is guaranteed to a ±2% tolerance. The clock frequency is controlled to within a ±11% tolerance.

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The LM4879 1.1 Watt Audio Power Amplifier is a high performance audio power amplifier specifically designed for demanding applications in mobile phones and other portable communication device applications. It can deliver 1.1 watt of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N) from a 5VDC power supply.

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The LM94023 is a precision analog output CMOS integrated-circuit temperature sensor that operates at a supply voltage as low as 1.5 Volts. It has a dual-gain structure and class AB output, suitable for driving heavy loads. It operates over a wide temperature range of -50°C to +150°C, delivering an output voltage inversely proportional to measured temperature. It has low supply current, making it ideal for battery-powered systems and general temperature sensing applications. The gain of the temperature-to-voltage output transfer function can be set using the gain select pin.

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The CP3UB17 is a reconfigurable connectivity processor from National Semiconductor Corporation. It features a powerful RISC core, on-chip SRAM and Flash memory, hardware communications peripherals, external bus, software resources, and so on.

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The CP3BT10 is a re-programmable connectivity processor from National Semiconductor Corporation with Bluetooth® and USB interfaces. The processor combines a powerful RISC core with on-chip SRAM and Flash memory for high computing bandwidth, communication peripherals for high I/O bandwidth, and an external bus for system expandability.

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The CP3BT10 is a reprogrammable connectivity processor with Bluetooth® and USB interfaces from National Semiconductor Corporation. It can be used for embedded Bluetooth applications. The processor integrates a powerful RISC core, SRAM and Flash memory, which provides high computing bandwidth. It also integrates communication peripherals such as Bluetooth Lower Link Controller, USB, ACCESS.bus, Microwire/SPI, UART and Advanced Audio Interface (AAI), which provides high I/O bandwidth. In addition, the processor integrates DMA controller, CVSD/PCM conversion module, Timing and Watchdog Unit, Versatile Timer Unit, Multi-Function Timer and Multi-Input Wakeup.

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The USBN9603/4 are integrated USB Node controllers with enhanced DMA support. They are compatible with USB specification versions 1.0 and 1.1, and are advanced versions of the USBN9602. The devices integrate the required USB transceiver, a 3.3V regulator, a Serial Interface Engine (SIE), USB endpoint (EP) FIFOs, a versatile 8-bit parallel interface, a clock generator, and a MICROWIRE/PLUS™ interface. Seven endpoint pipes are supported, including one for the mandatory control endpoint and six for interrupt, bulk, and isochronous endpoints. Each endpoint pipe has a dedicated FIFO, with 8 bytes for the control endpoint and 64 bytes for the other endpoints. The 8-bit parallel interface supports multiplexed and non-multiplexed style CPU address/data buses. A programmable interrupt output scheme allows device configuration for different interrupt signaling requirements.

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The DS55113–DS75113 dual differential line drivers with TRI-STATE outputs are designed to provide all the features of the DS55114–DS75114 line drivers with the added feature of driver output controls.

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The LM3410 is a high frequency constant current LED driver from TI. It features a high switching frequency (525kHz or 1.6MHz), low standby current, small package size and high efficiency. LM3410 is suitable for applications such as LED backlight, LiIon backlight OLED and HB LED driver, handheld devices and LED flash driver.

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The MM5483 is a liquid crystal display driver chip that can drive up to 31 segments of LCD and can be cascaded to increase this number. This chip is also capable of driving a 41⁄2-digit 7-segment display with minimal interface between the display and the data source. The MM5483 stores the display data in latches after it is latched in, and holds the data until another load pulse is received.

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The LM4755 is a stereo audio amplifier from National Semiconductor that can output 11W per channel at 4Ω and 7W per channel at 8Ω using a single 24V supply.

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The LMH6514 is a high performance, digitally controlled variable gain amplifier (DVGA). It combines precision gain control with a low noise, ultra-linear, differential amplifier. The LMH6514 drives a high performance ADC in a broad range of mixed signal and digital communication applications such as mobile radio and cellular base stations where auto- matic gain control (AGC) is required to increase system dy- namic range. When used in conjunction with a high speed ADC, system dynamic range can be extended by up to 42 dB. The LMH6514 has a differential input and output allowing large signal swings on a single 5V supply. It is designed to accept signals from RF elements and maintain a terminated impedance environment. The input impedance is 200Ω re- sistive. The output impedance is either 200Ω or 400Ω and is user selectable. A unique internal architecture allows use with both single ended and differential input signals. Input signals to the LMH6514 are scaled by a highly linear, digitally controlled attenuator with seven accurate 6 dB steps. The attenuator output provides the input signal for a high gain, ultra linear differential transconductor. The transconductor differential output current can be converted into a voltage by using the on-chip 200Ω or 400Ω loads. The transconductance gain is 0.1 Amp/Volt resulting in a maximum voltage gain of +32 dB when driving a 200

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The DS10CP154A is a 1.5 Gbps 4x4 LVDS crosspoint switch optimized for high-speed signal routing and switching over FR-4 printed circuit board backplanes and balanced cables. Fully differential signal paths ensure exceptional signal integrity and noise immunity. The non-blocking architecture allows connections of any input to any output or outputs. The switch configuration can be accomplished via external pins or the System Management Bus (SMBus) interface. In addition, the SMBus circuitry enables the loss of signal (LOS) monitors that can inform a system of the presence of an open inputs condition (e.g. disconnected cable). Wide input common mode range allows the switch to accept signals with LVDS, CML and LVPECL levels; the output levels are LVDS. A very small package footprint requires a minimal space on the board while the flow-through pinout allows easy board layout. Each differential input and output is internally terminated with a 100Ω resistor to lower return losses, reduce component count and further minimize board space.

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The LMX2531 is a low power, high performance frequency synthesizer system which includes a fully integrated delta- sigma PLL and VCO with fully integrated tank circuit. The third and fourth poles are also integrated and also adjustable. Also included are integrated ultra-low noise and high precision LDOs for the PLL and VCO which give higher supply noise immunity and also more consistent performance. When com- bined with a high quality reference oscillator, the LMX2531 generates very stable, low noise local oscillator signals for up and down conversion in wireless communication devices. The LMX2531 is a monolithic integrated circuit, fabricated in an advanced BiCMOS process. There are several different versions of this product in order to accomodate different fre- quency bands. Device programming is facilitated using a three-wire MICROWIRE Interface that can operate down to 1.8 volts. Supply voltage range is 2.8 to 3.2 Volts. The LMX2531 is available in a 36 pin 6x6x0.8 mm Lead-Free Leadless Lead-frame Package (LLP).

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