LTC6905 采用电阻器设定 17MHz 至 170MHz 频率的 SOT-23 封装振荡器
LTC®6905 精准、可编程硅振荡器易于使用，且占用的板级空间非常小。它只需单个电阻器便可在 17MHz 至 170MHz 的范围内设定输出频率，典型频率误差为 0.5% 或更小。
LTC6905 采用 2.7V 至 5.5V 单工作电源，并提供了一个轨至轨、50% 占空比的方波输出。CMOS 输出驱动器确保了快速上升/下降时间和轨至轨开关操作。工作原理很简单：采用一个阻值为 10k 至 25k 的电阻器 RSET 来设定频率，而且，一个内部三态分频器 (DIV 输入) 允许对主时钟进行 1、2 或 4 分频，从而为每个 RSET 阻值提供了三种频率。
LTC6905 包括一个专有的反馈环路，该反馈环路用于对 RSET 与频率之间的关系进行线性化处理，因而免除了采用表格来计算频率的需要。可采用概括如下的简单公式来轻松地设置振荡器的频率：
对于包括一个内部频率设定电阻器的较高准确度、固定频率器件版本，请参见 LTC6905-XXX 系列的数据表。
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LTC6905 订购信息和价格参考Package Variations and Pricing
| 器件型号 | 封装 | 引脚 | 温度 | 价格 (以 1 ~ 99 片为批量) | 价格 (以 1000 片为批量) * |
| LTC6905CS5 | SOT | 5 | C | $2.28 | |
| LTC6905CS5#PBF | SOT | 5 | C | $2.28 | |
| LTC6905CS5#TR | SOT | 5 | C | $2.28 | $1.65 |
| LTC6905CS5#TRM | SOT | 5 | C | $2.28 | $1.67 |
| LTC6905CS5#TRMPBF | SOT | 5 | C | $2.28 | $1.67 |
| LTC6905CS5#TRPBF | SOT | 5 | C | $2.28 | $1.65 |
| LTC6905CS5-100 | SOT | 5 | C | $1.71 | |
| LTC6905CS5-100#PBF | SOT | 5 | C | $1.71 | |
| LTC6905CS5-100#TR | SOT | 5 | C | $1.71 | $1.15 |
| LTC6905CS5-100#TRM | SOT | 5 | C | $1.71 | $1.17 |
| LTC6905CS5-100#TRMPBF | SOT | 5 | C | $1.71 | $1.17 |
| LTC6905CS5-100#TRPBF | SOT | 5 | C | $1.71 | $1.15 |
| LTC6905CS5-133 | SOT | 5 | C | $1.71 | |
| LTC6905CS5-133#PBF | SOT | 5 | C | $1.71 | |
| LTC6905CS5-133#TR | SOT | 5 | C | $1.71 | $1.15 |
| LTC6905CS5-133#TRM | SOT | 5 | C | $1.71 | $1.17 |
| LTC6905CS5-133#TRMPBF | SOT | 5 | C | $1.71 | $1.17 |
| LTC6905CS5-133#TRPBF | SOT | 5 | C | $1.71 | $1.15 |
| LTC6905CS5-80 | SOT | 5 | C | $1.71 | |
| LTC6905CS5-80#PBF | SOT | 5 | C | $1.71 | |
| LTC6905CS5-80#TR | SOT | 5 | C | $1.71 | $1.15 |
| LTC6905CS5-80#TRM | SOT | 5 | C | $1.71 | $1.17 |
| LTC6905CS5-80#TRMPBF | SOT | 5 | C | $1.71 | $1.17 |
| LTC6905CS5-80#TRPBF | SOT | 5 | C | $1.71 | $1.15 |
| LTC6905CS5-96 | SOT | 5 | C | $1.71 | |
| LTC6905CS5-96#PBF | SOT | 5 | C | $1.71 | |
| LTC6905CS5-96#TR | SOT | 5 | C | $1.71 | $1.15 |
| LTC6905CS5-96#TRM | SOT | 5 | C | $1.71 | $1.17 |
| LTC6905CS5-96#TRMPBF | SOT | 5 | C | $1.71 | $1.17 |
| LTC6905CS5-96#TRPBF | SOT | 5 | C | $1.71 | $1.15 |
| LTC6905HS5 | SOT | 5 | H | $3.25 | |
| LTC6905HS5#PBF | SOT | 5 | H | $3.25 | |
| LTC6905HS5#TR | SOT | 5 | H | $3.25 | $2.44 |
| LTC6905HS5#TRM | SOT | 5 | H | $3.25 | $2.46 |
| LTC6905HS5#TRMPBF | SOT | 5 | H | $3.25 | $2.46 |
| LTC6905HS5#TRPBF | SOT | 5 | H | $3.25 | $2.44 |
| LTC6905HS5-100 | SOT | 5 | H | $2.45 | $1.67 |
| LTC6905HS5-100#PBF | SOT | 5 | H | $2.45 | |
| LTC6905HS5-100#TR | SOT | 5 | H | $2.45 | $1.73 |
| LTC6905HS5-100#TRM | SOT | 5 | H | $2.45 | $1.75 |
| LTC6905HS5-100#TRMPBF | SOT | 5 | H | $2.45 | $1.75 |
| LTC6905HS5-100#TRPBF | SOT | 5 | H | $2.45 | $1.73 |
| LTC6905HS5-133 | SOT | 5 | H | $2.45 | |
| LTC6905HS5-133#PBF | SOT | 5 | H | $2.45 | |
| LTC6905HS5-133#TR | SOT | 5 | H | $2.45 | $1.73 |
| LTC6905HS5-133#TRM | SOT | 5 | H | $2.45 | $1.75 |
| LTC6905HS5-133#TRMPBF | SOT | 5 | H | $2.45 | $1.75 |
| LTC6905HS5-133#TRPBF | SOT | 5 | H | $2.45 | $1.73 |
| LTC6905HS5-80 | SOT | 5 | H | $2.45 | |
| LTC6905HS5-80#PBF | SOT | 5 | H | $2.45 | |
| LTC6905HS5-80#TR | SOT | 5 | H | $2.45 | $1.73 |
| LTC6905HS5-80#TRM | SOT | 5 | H | $2.45 | $1.75 |
| LTC6905HS5-80#TRMPBF | SOT | 5 | H | $2.45 | $1.75 |
| LTC6905HS5-80#TRPBF | SOT | 5 | H | $2.45 | $1.73 |
| LTC6905HS5-96 | SOT | 5 | H | $2.45 | |
| LTC6905HS5-96#PBF | SOT | 5 | H | $2.45 | |
| LTC6905HS5-96#TR | SOT | 5 | H | $2.45 | $1.73 |
| LTC6905HS5-96#TRM | SOT | 5 | H | $2.45 | $1.75 |
| LTC6905HS5-96#TRMPBF | SOT | 5 | H | $2.45 | $1.75 |
| LTC6905HS5-96#TRPBF | SOT | 5 | H | $2.45 | $1.73 |
| LTC6905IS5 | SOT | 5 | I | $2.71 | |
| LTC6905IS5#PBF | SOT | 5 | I | $2.71 | |
| LTC6905IS5#TR | SOT | 5 | I | $2.71 | $2.04 |
| LTC6905IS5#TRM | SOT | 5 | I | $2.71 | $2.06 |
| LTC6905IS5#TRMPBF | SOT | 5 | I | $2.71 | $2.06 |
| LTC6905IS5#TRPBF | SOT | 5 | I | $2.71 | $2.04 |
| LTC6905IS5-100 | SOT | 5 | I | $2.04 | |
| LTC6905IS5-100#PBF | SOT | 5 | I | $2.04 | |
| LTC6905IS5-100#TR | SOT | 5 | I | $2.04 | $1.44 |
| LTC6905IS5-100#TRM | SOT | 5 | I | $2.04 | $1.46 |
| LTC6905IS5-100#TRMPBF | SOT | 5 | I | $2.04 | $1.46 |
| LTC6905IS5-100#TRPBF | SOT | 5 | I | $2.04 | $1.44 |
| LTC6905IS5-133 | SOT | 5 | I | $2.04 | |
| LTC6905IS5-133#PBF | SOT | 5 | I | $2.04 | |
| LTC6905IS5-133#TR | SOT | 5 | I | $2.04 | $1.44 |
| LTC6905IS5-133#TRM | SOT | 5 | I | $2.04 | $1.46 |
| LTC6905IS5-133#TRMPBF | SOT | 5 | I | $2.04 | $1.46 |
| LTC6905IS5-133#TRPBF | SOT | 5 | I | $2.04 | $1.44 |
| LTC6905IS5-80 | SOT | 5 | I | $2.04 | |
| LTC6905IS5-80#PBF | SOT | 5 | I | $2.04 | |
| LTC6905IS5-80#TR | SOT | 5 | I | $2.04 | $1.44 |
| LTC6905IS5-80#TRM | SOT | 5 | I | $2.04 | $1.46 |
| LTC6905IS5-80#TRMPBF | SOT | 5 | I | $2.04 | $1.46 |
| LTC6905IS5-80#TRPBF | SOT | 5 | I | $2.04 | $1.44 |
| LTC6905IS5-96 | SOT | 5 | I | $2.04 | |
| LTC6905IS5-96#PBF | SOT | 5 | I | $2.04 | |
| LTC6905IS5-96#TR | SOT | 5 | I | $2.04 | $1.44 |
| LTC6905IS5-96#TRM | SOT | 5 | I | $2.04 | $1.46 |
| LTC6905IS5-96#TRMPBF | SOT | 5 | I | $2.04 | $1.46 |
| LTC6905IS5-96#TRPBF | SOT | 5 | I | $2.04 | $1.44 |
| LTC6905MPS5#PBF | SOT | 5 | MP | $7.02 | |
| LTC6905MPS5#TRMPBF | SOT | 5 | MP | $7.02 | $5.09 |
| LTC6905MPS5#TRPBF | SOT | 5 | MP | $5.04 |
LTC6905 数据手册及相关资料下载
- 数据手册 (英文) : LTC6905 - 17MHz to 170MHz Resistor Set SOT-23 Oscillator.PDF
- 应用指南 (英文) : AN98 - Signal Sources, Conditioners and Power Circuitry Circuits of the Fall, 2004.PDF
- 可靠性数据 : R494 Reliability Data .PDF
- 产品选型卡 : Silicon Oscillators.PDF
