LTC6991 - TimerBlox: Resettable, Low Frequency Oscillator
The LTC®6991 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 LTC6991 is part of the TimerBlox® family of versatile silicon timing devices.
A single resistor, RSET , programs the LTC6991’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.
Features
Typical Application  | Applications
Packaging  |
| Part Number | Package | Temp | Price(1-99) | Price (1k)* |
|---|---|---|---|---|
| LTC6991CDCB#PBF | 2x3 DFN-6 | C | $1.88 | |
| LTC6991CDCB#TRMPBF | 2x3 DFN-6 | C | $1.88 | $1.40 |
| LTC6991CDCB#TRPBF | 2x3 DFN-6 | C | $1.88 | $1.35 |
| LTC6991CS6#PBF | SOT-23 | C | $1.88 | |
| LTC6991CS6#TRMPBF | SOT-23 | C | $1.88 | $1.40 |
| LTC6991CS6#TRPBF | SOT-23 | C | $1.88 | $1.35 |
| LTC6991HDCB#PBF | 2x3 DFN-6 | H | $2.63 | |
| LTC6991HDCB#TRMPBF | 2x3 DFN-6 | H | $2.63 | $1.94 |
| LTC6991HDCB#TRPBF | 2x3 DFN-6 | H | $2.63 | $1.89 |
| LTC6991HS6#PBF | SOT-23 | H | $2.16 | |
| LTC6991HS6#TRMPBF | SOT-23 | H | $2.63 | $1.94 |
| LTC6991HS6#TRPBF | SOT-23 | H | $2.63 | $1.89 |
| LTC6991IDCB#PBF | 2x3 DFN-6 | I | $2.16 | |
| LTC6991IDCB#TRMPBF | 2x3 DFN-6 | I | $2.16 | $1.60 |
| LTC6991IDCB#TRPBF | 2x3 DFN-6 | I | $2.16 | $1.55 |
| LTC6991IS6#PBF | SOT-23 | I | $2.16 | |
| LTC6991IS6#TRMPBF | SOT-23 | I | $2.16 | $1.60 |
| LTC6991IS6#TRPBF | SOT-23 | I | $2.16 | $1.55 |
| LTC6991MPS6#PBF | SOT-23 | MP | $5.64 | |
| LTC6991MPS6#TRMPBF | SOT-23 | MP | $5.64 | $4.10 |
| LTC6991MPS6#TRPBF | SOT-23 | MP | $5.64 | $4.05 |
Demo Boards
| Part Number | Description | Price |
|---|---|---|
| DC1562B-B | LTC6991 Demo Board | 1Hz (1s) Fixed Frequency | $25.00 |
- 纤巧型低频时钟芯片支持从 1ms 至 9.5 小时的长持续时间定时
- R494 Reliability Data
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