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Overview
Features and Benefits
- Pulse Width Range: 1µs to 33.6 Seconds
- Configured with 1 to 3 Resistors
- Pulse Width Max Error:
- <2.3% for Pulse Width > 512µs
- <3.4% for Pulse Width of 8µs to 512µs
- <4.9% for Pulse Width of 1µs to 8µs
- Four LTC6993 Options Available:
- Rising-Edge or Falling-Edge Trigger
- Retriggerable or Non-Retriggerable
- Configurable for Positive or Negative Output Pulse
- Fast Recovery Time
- 2.25V to 5.5V Single Supply Operation
- 70µA Supply Current at 10µs Pulse Width
- 500µs Start-Up Time
- CMOS Output Driver Sources/Sinks 20mA
- –55°C to 125°C Operating Temperature Range
- Available in Low Profile (1mm) SOT-23 (ThinSOT™) and 2mm × 3mm DFN
- AEC-Q100 Qualified for Automotive Applications
Product Details
The LTC6993 is a monostable multivibrator (also known as a “one-shot” pulse generator) with a programmable pulse width of 1µs to 33.6 seconds. The LTC6993 is part of the TimerBlox® family of versatile silicon timing devices.
A single resistor, RSET, programs an internal master oscillator frequency, setting the LTC6993’s time base. The output pulse width is determined by this master oscillator and an internal clock divider, NDIV, programmable to eight settings from 1 to 221.
The output pulse is initiated by a transition on the trigger input (TRIG). Each part can be configured to generate positive or negative output pulses. The LTC6993 is available in four versions to provide different trigger signal polarity and retrigger capability.
The LTC6993 also offers the ability to dynamically adjust the width of the output pulse via a separate control voltage.
| Device | Input Polarity | Retrigger |
| LTC6993-1 | Rising-Edge | No |
| LTC6993-2 | Rising-Edge | Yes |
| LTC6993-3 | Falling-Edge | No |
| LTC6993-4 | Falling-Edge | Yes |
Applications
- Watchdog Timer
- Frequency Discriminators
- Missing Pulse Detection
- Envelope Detection
- High Vibration, High Acceleration Environments
- Portable and Battery-Powered Equipment
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (4)
Documentation
Reliability Data (1)
User Guides (1)
Tools & Simulations
LTspice
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Step 1: Download and install LTspice on your computer.
Step 2: Click on the link in the section below to download a demonstration circuit.
Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.
Models for the following parts are available in LTspice:
Design Tools
Reference Materials
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Product Selector Card (1)
Solutions Bulletins & Brochures (1)
Introducing the TimerBlox Family of Versatile, Easy To Use, Accurate Timing...
Technical Articles (2)
Design Resources
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PCN-PDN Information
Support & Discussions
ltc6993-1 Discussions
Sample & Buy
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
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Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.