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Simple & Small Delay Block Offers Accurate Timing for 1us to 33.6s
MILPITAS, CA - September 20, 2010 - Linear Technology announces
the LTC6994, an accurate and simple delay
block, based on Linear Technology's silicon oscillator technology
and the newest member of the TimerBloxTM family. The LTC6994
contains a delay circuit that is simply programmed using 1 to 3
resistors, providing a programmable range of 1us to 33.6 seconds.
This delay period can also be controlled via a separate input
voltage. Delay error is less than 2.3% and two versions of the
LTC6994 are available: the LTC6994-1 and LTC6994-2.
The LTC6994-1 will delay either the rising or falling edge of the
input signal, as selected by the user. With a rising edge delay,
the output follows the input high after the delay period, and
remains high until the input falls. With a falling edge delay, the
output follows the input low after the delay period, and remains
low until the input rises. This operation is well suited for pulse
qualification. The LTC6994-2 will delay both the rising and falling
edge of the input signal. The output only responds to input changes
that persist longer than the delay period. The LTC6994-2 is ideal
for switch debouncing, delay matching and guaranteeing that a
signal meets minimum pulse width requirements.
The LTC6994 is part of the TimerBlox family of versatile silicon
timing devices in which an accurate programmable oscillator is
combined with precision circuitry and logic. No capacitors, no
crystals, no microcontroller and no programming are required.
TimerBlox devices are solid state and can be operated under high
acceleration, vibration and temperature extremes. They offer higher
accuracy, stability and lower power consumption than typical
resistor/capacitor-based oscillators. The 20mA source and sink
capability allows for directly driving opto-isolators and
transformers for electrical isolation. Fully specified over the
temperature range of -40°C to 125°C, the TimerBlox parts are
suitable for demanding automotive and industrial environments where
many oscillators and microcontrollers are unable to operate. The
small SOT23 footprint allows each timing device to be placed at the
point of use, without routing signals over long distances, and
provides an ideal timer for space-limited applications such as
handheld and portable devices.
"Adding an accurate delay to any circuit should be this simple and
easy," says Doug LaPorte, design manager for Linear
Technology.
The LTC6994 is now available, priced starting at $1.35 each in
1,000-piece quantities. For more information, visit www.linear.com/6994.
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Summary of Features: LTC6994
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Delay Block is Programmable for |
