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Features
- Period Range: 1ms to 9.5 Hours
- Timing Reset by Power-On or Reset Input
- Configured with 1 to 3 Resistors
- <1.5% Maximum Frequency Error
- Programmable Output Polarity
- 2.25V to 5.5V Single Supply Operation
- 55μA to 80μA Supply Current (2ms to 9.5hr Clock Period)
- 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 Packages
- AEC-Q100 Qualified for Automotive Applications
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The LTC6995 is a silicon oscillator with a programmable period range of 1.024ms to 9.54 hours (29.1μHz to 977Hz), specifically intended for long duration timing events. The LTC6995 is part of the TimerBlox® family of versatile silicon timing devices.
A single resistor, RSET, programs the LTC6995’s internal master oscillator frequency. The output clock period is determined by this master oscillator and an internal frequency divider, NDIV, programmable to eight settings from 1 to 221.
When oscillating, the LTC6995 generates a 50% duty cycle square wave output. A reset function is provided to stop the master oscillator and clear internal dividers. Removing reset initiates a full output clock cycle which is useful for programmable power-on reset and watchdog timer applications.
The LTC6995 has two versions of reset functionality. The reset input is active high for the LTC6995-1 and active low for the LTC6995-2. The polarity of the output when reset is selectable for both versions.
Applications
- Power-On Reset Timer
- Long Time One Shot
- “Heartbeat” Timers
- Watchdog Timers
- Periodic “Wake-Up” Call
- High Vibration, High Acceleration Environments
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LTC6995
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Jun 30, 2020
- 20_0244
Notification of Wafer Fab Location Change for 0.6µm CMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)
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Software & Part Ecosystem
| Parts | Product Life Cycle | Description | ||
|---|---|---|---|---|
|
Pushbutton Controllers1 |
||||
|
RECOMMENDED FOR NEW DESIGNS |
Wake-Up Timer with Pushbutton Control |
|||
Evaluation Kits 2
DC1562B-M
LTC6995-1: 1sec Power-on Reset (-1 Device with Active High Reset Input)
Product Detail
DC1562B-M: Demo Board for the LTC6995-1/LTC6995-2 TimerBlox: Long Timer, Low Frequency Oscillator.
Resources
DC1562B-N
LTC6995-2 Demo Board: 1 sec Power-on Reset (-2 Device with Active Low Reset Input)
Product Detail
DC1562B-N: Demo Board for the LTC6995-1/LTC6995-2 TimerBlox: Long Timer, Low Frequency Oscillator.
Resources
Tools & Simulations 2
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
To launch ready-to-run LTspice demonstration circuits for this part:
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.
Lt Spice
LTC6995: Timer / Low Frequency Oscillator
