Industrial

This file mainly introduces the physical dimensions, electrical characteristics, supply range, working temperature and other information of macro line baton character LCD modules

The LMX2531 is a low power, high performance frequency synthesizer system that includes a fully integrated delta-sigma PLL and VCO with a 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 more consistent performance. When combined 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 actually several different versions of this product, for which the primary difference is frequency range. 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). Target Applications n 3G Cellular Base Stations (WCDMA, TD-SCDMA,CDMA2000) n 2G Cellular Base Stations (GSM/GPRS, EDGE, CDMA1xRTT) n Wireless LAN n Broadband Wireless Access n Satellite Communications n Wireless Radio n Automotive n CATV Equipment n Instrumentation and Test Equipment n RFID Readers Features Multiple Frequency Options Available

LMX2525 is a highly integrated, high performance, low power frequency synthesizer system optimized for dual-band Japan PDC mobile handsets.

The LMX2522/LMX2532 PLLatinum™ frequency synthesizer system with integrated VCOs is designed for use in Korean PCS (K-PCS) and Korean Cellular (K-Cellular) cellular phones and CDMA (1xRTT, IS-95) mobile phones.

LMX2505 is a highly integrated, high performance, low power frequency synthesizer system optimized for dual-band Japan PDC mobile handsets. Using a proprietary digi- tal phase locked loop technique, LMX2505 generates very stable, low noise local oscillator signals for up and down conversion in wireless communications devices. LMX2505 includes dual voltage controlled oscillators (VCOs) for the upper and lower Japan PDC frequency bands, a loop filter, and a fractional-N RF PLL based on a delta sigma modulator. In concert these blocks form a closed loop RF synthesizer system. The RF synthesizer system supports two frequency bands: PDC1500 and PDC800. Serial data is transferred to the device via a three-wire MICROWIRE interface (DATA, LE, CLK). Operating supply voltage ranges from 2.5 V to 3.3 V. LMX2505 features low current consumption: 10 mA at 2.8 V when operating in the PDC800 mode. LMX2505 is available in a 28-pin leadless leadframe pack- age (LLP).

LMX2502 and LMX2512 are highly integrated, high performance, low power frequency synthesizer systems optimized for Korean PCS and Korean Cellular CDMA (1xRTT, IS-95) mobile handsets.

LMX2487 3.0 GHz - 6.0 GHz High Performance Delta-Sigma Low Power Dual PLLatinum Frequency Synthesizers with 3.0 GHz Integer PLL

The LMX2471 is a low power, high performance delta-sigma fractional-N PLL with an auxiliary integer-N PLL. The device is fabricated using National Semiconductor’s advanced BiC-MOS process. With delta-sigma architecture, fractional spur compensation is achieved with noise shaping capability of the delta-sigma modulator and the inherent low pass filtering of the PLL loop filter. Fractional spurs at lower frequencies are pushed to higher frequencies outside the loop bandwidth. Unlike analog compensation, the digital feedback techniques used in the LMX2471 are highly resistant to changes in temperature and variations in wafer processing. With delta-sigma architecture, the ability to push close in spur and phase noise energy to higher frequencies is a direct function of the modulator order. The higher the order, the more this energy can be spread to higher frequencies. The LMX2471 has a programmable modulator up to order four, which allows the designer to select the optimum modulator order to fit the phase noise, spur, and lock time requirements of the system. Programming is fast and simple. Serial data is transferred into the LMX2471 via a three line MICROWIRE interface (Data, Clock, Load Enable). Nominal supply voltage is 2.5 V. The LMX2471 features a typical current consumption of 5.6 mA at 2.5 V. The LMX2471 is available in a 24 lead 3.5 X 4.5 X 0.6 mm package. Features n Low power, high performance delta-sigma fractional-N PLLn Auxiliary integer-N PLLn Fabricated using National Semiconductor’s advanced BiC-MOS processn Noise shaping capability of the delta-sigma modulatorn Inherent low pass filtering of the PLL loop filtern Energy can be spread to higher frequenciesn Fast and simple programming

The LMX2470 is a low power, high performance delta-sigma fractional-N PLL with an auxiliary integer-N PLL. It is fabricated using National Semiconductor’s advanced BiCMOS process. The delta-sigma architecture allows for fractional spur compensation by utilizing the noise shaping capability of the delta-sigma modulator and the low pass filtering of the PLL loop filter. This pushes fractional spurs at lower frequencies to higher frequencies outside the loop bandwidth. The digital feedback techniques used in the LMX2470 are resistant to changes in temperature and variations in wafer processing, unlike analog compensation. The ability to push close in spur and phase noise energy to higher frequencies is directly related to the modulator order, with higher orders allowing for more energy spread to higher frequencies. The LMX2470 has a programmable modulator with a maximum order of four, allowing the designer to select the optimal modulator order for the system's phase noise, spur, and lock time requirements. Programming is simple and fast using a three line MICROWIRE interface. The LMX2470 operates at a nominal supply voltage of 2.5V and has a typical current consumption of 4.1mA. It is available in a 24 lead 3.5 X 4.5 X 0.6 mm package.

The LP2978 is a 50 mA, fixed-output voltage regulator designed to provide ultra low-dropout and low noise in battery powered applications. Using an optimized VIP™ (Vertically Integrated PNP) process, the LP2978 delivers unparalleled performance in all specifications critical to battery-powered designs: Dropout Voltage: Typically 120 mV @ 50 mA load, and 7 mV @ 1 mA load. Ground Pin Current: Typically 350 µA @ 50 mA load, and 75 µA @ 1 mA load. Enhanced Stability: The LP2978 is stable with output capacitor ESR as low as 5 mΩ, which allows the use of ceramic capacitors on the output. Sleep Mode: Less than 1 µA quiescent current when ON/OFF pin is pulled low. Smallest Possible Size: SOT-23 package uses absolute minimum board space. Precision Output: 1% tolerance output voltages available (A grade). Low Noise: By adding a 10 nF bypass capacitor, output noise can be reduced to 30 µV (typical).

LMX2430/LMX2433/LMX2434 PLLatinum™ Dual High Frequency Synthesizer for RF Personal Communications

LMX2377U is a ultra-low power dual frequency synthesizer from Linear Technology. It adopts a proprietary digital phase lock technique and can generate very stable, low noise control signals for UHF and VHF voltage controlled oscillators. The device features synchronous or asynchronous powerdown mode, and typically consumes 3.5 mA at 3.0V. LMX2377U is available in 20-Pin TSSOP, 24-Pin CSP and 20-Pin UTCSP packages.

The LMX237X family of monolithic, integrated dual frequency synthesizers, including prescalers, is designed to be used as a first and second local oscillator for dual mode or dual conversion transceivers.

The LMX2364 is a high-performance PLLatinum fractional frequency synthesizer that integrates a 2.6 GHz fractional frequency synthesizer and an 850 MHz low power integer-N frequency synthesizer. It is designed for use in the local oscillator subsystem of a radio transceiver, providing stable and low noise control signals for UHF and VHF voltage controlled oscillators.

The LMX2354 is a radio frequency frequency synthesizer manufactured by National Semiconductor. It is fabricated using National’s 0.5 μ ABiC V silicon BiCMOS process and consumes only 7.0 mA of power. The operating frequency range is 2.5 GHz to 550 MHz. The product uses quadruple modulus prescalers and modulo 15 or 16 fractional compensation circuitry in the RF divider to provide a continuous divide ratio of 80 to 32767 in 16/17/20/21 (1.2 GHz–2.5 GHz) fractional mode and 40 to 16383 in 8/9/12/13 (550 MHz–1.2 GHz) fractional mode.