Dual Supply Monitors provide variety of thresholds.
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Press Release Summary:
Offered in 8-pin ThinSOT(TM) and DFN packages, Models LTC2904 and LTC2905 feature 9 combinations of input threshold levels. Models LTC2906 and LTC2907 provide one input, adjustable to as low as 0.5 V, and another with 3 possible voltage selections. ICs offer selectable supply tolerance of 5%, 7.5%, and 10%, and threshold and tolerance levels are chosen by 3-state input pins. Features include ±1.5% voltage threshold accuracy and glitch immunity.
Original Press Release:
Pin-Selectable Dual Supply Monitors Offer a Variety of Thresholds & Tolerances in 8-Pin ThinSOT & DFN
MILPITAS, CA - March 30, 2004 - Linear Technology introduces the LTC2904/LTC2905 and the LTC2906/LTC2907, space-saving dual supply monitors. The LTC2904/LTC2905 feature nine combinations of input threshold levels, while the LTC2906/LTC2907 provide one input that is adjustable to as low as 0.5V and another with three possible voltage selections. All of the ICs offer selectable supply tolerance of 5%, 7.5% and 10%, allowing for possible margining. The threshold and tolerance levels are chosen by three-state input pins and do not require any external components. This simple three-state selection provides a diverse choice of voltage thresholds and tolerances, eliminating the need to qualify, source and stock different part numbers for different combinations of input supplies.
The tight ±1.5% voltage threshold accuracy and glitch immunity ensure reliable reset operation without false triggering. The LTC2904 and LTC2906 have common RST and RST##CRLF# outputs with 200ms delay. The LTC2905 and LTC2907 provide only a RST# with a delay time that is adjustable using an external capacitor.
The LTC2904/LTC2905 and LTC2906/LTC2907 are offered in 8-pin ThinSOT(TM) and DFN packages. The small size makes them perfectly suited for handheld devices and portable intelligent instruments as well as any dual supply voltage system.
Prices for the LTC2904/LTC2905 and LTC2906/LTC2907 begin at $1.35 each in 1000-piece quantities. The ICs are specified over the commercial and industrial temperature ranges.
Summary of Features: LTC2904/LTC2905 & LTC2906/LTC2907
Monitor Two Inputs Simultaneously
Nine Threshold Combinations of 5V, 3.3V, 2.5V, 1.8V, 1.5V, 1.2V & 1V (LTC2904/LTC2905)
Fixed Threshold Selection of 5V, 3.3V, 2.5V & Low Voltage Adjustable Input LTC2906/LTC2907)
Adjustable Reset Time Delay (LTC2905, LTC2907)
Three Supply Tolerances (5%, 7.5%, 10%)
Guaranteed Threshold Accuracy: ±1.5% over Temperature
Low-Profile (1mm) ThinSOT & DFN Packages
Company Background
Linear Technology Corporation was founded in 1981 as a manufacturer of high performance linear integrated circuits. Linear Technology products include operational, instrumentation and audio amplifiers; voltage regulators,power management devices, DC-DC converters and voltage references; comparators; monolithic filters; communications interface circuits; one-chip data acquisition sub-systems; pulse-width modulators and sample-and-hold devices; and high frequencydevices. Applications for Linear Technology's high performance circuits include wireless and broadband telecommunications infrastructure, cellular telephones, networking products and satellite systems, notebook and desk top computers, computer peripherals, video/multimedia, industrial and medical instrumentation, automotive electronics, factory automation, process control, military and space systems, and high-end consumer products including digital cameras, MP3 players and other electronic products.
Note: LT, AND LTC are registered trademarks of Linear Technology Corp.
