Industrial

The document describes a backlight inverter module that is highly efficient, small and compact, with multiple outputs and low EMI. It can drive two lamps simultaneously, with adjustable lamp current, 3:1 dimming control, and features such as output short and open circuit protection. The module is suitable for applications such as desktop LCD monitors and panels, industrial LCD panels, and hi-brite displays.

The LX7201 is an integrated Universal Serial Bus (USB) line termination device with an EMI filter and ESD protection diodes. This device offers a cost effective and compact solution for one USB downstream port. The USB specification requires line termination resistors on both the D+ and D- lines. These resistors ensure signal integrity by matching the cable impedance to that of the differential driver. The 15KΩ pull-down resistors identify the line as a downstream connection. The 47 pF capacitor completes the high frequency filter and controls the edge rate of the USB signals. The LX7201 protects both D+ and D- data lines and the voltage bus from ESD. The TVS protection diodes exceed the requirements of IEC61000-4-2, level 4, 15kV (air discharge) and 8kV (contact discharge). The integrated configuration of the LX7201 minimizes board space and allows for ideal placement near the connector. The LX7201 is ideal for use in USB hubs, peripherals and portable appliances.

The LTC ®2238/LTC2237/LTC2236 are 10-bit 65Msps/ 40Msps/25Msps, low power 3V A/D converters designed for digitizing high frequency, wide dynamic range signals.

The LTC1422 is a hot swap controller from LTC that allows the board to be safely inserted and removed from a live backplane. It has a programmable delay system reset output, a programmable electronic circuit breaker, a user-programmable supply voltage power-up rate, a high side driver for an external N-channel FET, controls supply voltages from 2.7V to 12V, undervoltage lockout and a soft reset input.

The LT1797 is a unity-gain stable 10MHz op amp available in the small SOT-23 package that operates on all single and split supplies with a total voltage of 2.7V to 12V.

The LT1765 is a 1.25MHz monolithic buck switching regulator suitable for applications such as DSL modems, portable computers, regulated wall adapters, battery-powered systems, and distributed power. It features high efficiency, wide operating voltage range, low shutdown current, and synchronization.

The LT®1764 is a low dropout regulator optimized for fast transient response. The device is capable of supplying 3A of output current with a dropout voltage of 340mV. Oper- ating quiescent current is 1mA, dropping to <1µA in shutdown. Quiescent current is well controlled; it does not rise in dropout as it does with many other regulators. In addition to fast transient response, the LT1764 has very low output voltage noise which makes the device ideal for sensitive RF supply applications. Output voltage range is from 1.21V to 20V. The LT1764 regulators are stable with output capacitors as low as 10µF. Internal protection circuitry includes reverse battery pro- tection, current limiting, thermal limiting and reverse cur- rent protection. The device is available in fixed output voltages of 1.5V, 1.8V, 2.5V, 3.3V and as an adjustable device with a 1.21V reference voltage. The LT1764 regu- lators are available in 5-lead

LT1584/LT1585/LT1587 7A, 4.6A, 3A low dropout fast response positive regulators adjustable and fixed voltage

The LT ® 1500 is an adaptive-frequency current mode step-up switching regulator with an internal power switch that is rated up to 700mA. In contrast to pulse skipping switching regulators, the LT1500 uses a current mode topology that provides lower noise operation and im- proved efficiency. Only at very light loads is Burst Mode TM activated to give high efficiency and micropower opera- tion. High switching frequency (up to 500kHz) allows very small inductors to be used, along with ceramic capacitors if desired. The LT1500 operates with input voltages from 1.8V to 15V and has only 200µA operating current dropping to 8µA in shutdown. A low-battery comparator is included which stays alive in shutdown. A second output feedback pin with negative polarity allows negative output voltages to be regulated when the switcher is connected up as a Cuk or a flyback converter. Two package types are available. The LT1500 comes in a 14-pin SO package, with two options available for fixed output (3.3V or 5V) or adjustable operation. A reduced feature part, the LT1501, comes in the smaller 8-pin SO package with internal frequency compensation. It is also available in adjustable and fixed output voltage versions.

The LT1341 is an advanced low power three-driver, five-receiver RS232 transceiver. Included on the chip is a shutdown pin for reducing supply current to near zero. During shutdown one receiver remains active to detect incoming RS232 signals, for example, to wake up a system. All other receivers and the drivers assume high impedance states during shutdown. The driver disable function provides additional control of operating mode. When driver disable is high the charge pump and drivers turn off. Receivers continue to operate during driver disable. New ESD structures on the chip allow the LT1341 to survive multiple ±10kV strikes, eliminating the need for costly TransZorbs on the RS232 line pins. The LT1341 is fully compliant with all EIA RS232 specifications and operates in excess of 120kbaud even driving heavy capacitive loads. One Receiver Remains Active While in Shutdown, ESD Protection Over ±10kV, Uses Small Capacitors: 0.1µF, 0.2µF, 60µA Supply Current in Shutdown, Pin Compatible with LT1137A, 120kBaud Operation for RL = 3k, CL = 2500pF, 250kBaud Operation for RL = 3k, CL = 1000pF, CMOS Comparable Low Power: 60mW, Operates from a Single 5V Supply, Easy PC Layout: Flowthrough Architecture, Rugged Bipolar Design, Outputs Assume a High Impedance State When Off or Powered Down, Absolutely No Latchup, Available in SSOP Package.

The application note describes the methods employed at Agilent Technologies in the analysis of iron ore samples for fifteen different elements.

This document introduces a technique for analyzing zinc-based alloys using atomic absorption spectrophotometry. The technique can be used to measure zinc, aluminum, copper, iron, lead, and tin.

EtG is a minor metabolite of ethanol, can be detected in blood for up to 36 hours and in urine for up to 5 days, can be used as a biomarker for alcohol consumption. This application note describes a fast and sensitive EtG analysis method using the Varian Pursuit C18 HPLC column and 320-MS LC/MS/MS system, which demonstrates good linearity, high sensitivity, and stable ion ratios with a detection limit of 10 ppb.