sitoffers a full portfolio of MEMS kHz oscillators and TCXOs. The unique combination of an ultra-small footprint, µPower operation, and accuracy makes the devices an ideal fit for clocking space-sensitive, battery-driven products. With programmable drive strength, these devices can drive multiple loads, such as the BLE sleep clock, RTC, audio, and other connectivity SOCs.
32 kHz振荡器
Sitime的MEMS 32 kHz解决方案非常适合在可穿戴和移动应用中更换传统的石英晶体（谐振器），其中空间和功率是至关重要的。
- 较小的占地面积：1.2 mm2（1.5 x 0.8 mm）CSP（SIT1532，SIT1572）
- 超低功率，低至<1μA
- 与LVCMOS输出相比，Nanodrive™可编程输出摆动最小化功率（SIT1532 / 3）
- 1.2 V operation-optimized for regulated supply applications, such as coin-cell or super-cap battery backup (SiT1532/3)
- All-inclusive frequency stability, as low as ±50 ppm over temp. (SiT1572)
| 设备 | 数据表 | Frequency | 稳定（ppm） | Output Type | 电源电压(V) | Temp. Range（°C） | 包装尺寸（毫米2) |
|---|---|---|---|---|---|---|---|
| SIT1532 | 32.768 kHz. | 75100.250 | LVCMOSnanodrive™ | 1.2至3.63 | -10到+70-40 to +85 | 1.5x0.8 | |
| SIT1533. | 32.768 kHz. | 75100.250 | LVCMOSnanodrive™ | 1.2至3.63 | -10到+70-40 to +85 | 2.0x1.2 | |
| SIT1572. | 32.768 kHz. | ±50. | LVCMOS | 1.62至3.63 | -40 to +85 | 1.5x0.8 | |
| SiT1630 | 32.768,16.384 kHz | 75100.150 | LVCMOS | 1.5 to 3.63 | -10到+70-40 to +85-40到+105 | 2.0x1.2SOT23-5 | |
| SIT1573. | 32.768 kHz. | ±100. | LVCMOS | 1.62至3.63 | -40 to +85 | 1.5x0.8 |
32 kHz TCXO.
sit's 32 kHz TCXO family is the first to offer ±3 ppm stability in a 1.2 mm2 chip-scale package. The typical core supply current is as low as 1 μA. These 32 kHz TCXOs are factory-calibrated over multiple temperature points to guarantee extremely tight, all-inclusive frequency stability.
- 电流低至0.99μA（SIT1552）
- 稳定性选项包括±3 ppm（SIT1566，4.5μA）和±10 ppm（SIT1552为0.99μA）
- 与LVCMOS输出相比，Nanodrive™可编程输出摆动最小化功率（SIT1552）
| 设备 | 数据表 | Frequency | 稳定（ppm） | Output Type | 电源电压(V) | Temp. Range（°C） | 包装尺寸（毫米2) |
|---|---|---|---|---|---|---|---|
| SIT1552. | 32.768 kHz. | ±5.±10±20 | LVCMOSnanodrive™ | 1.5 to 3.63 | -0到+70-40 to +85 | 1.5x0.8 | |
| SIT1566. | 32.768 kHz. | ±3.±5. | LVCMOS | 1.62至3.63 | -20 to +70-40 to +85 | 1.5x0.8 | |
| SIT1568. | 32.768 kHz. | ±5. | LVCMOS | 1.8 | -20 to +70-40 to +85 | 1.5x0.8 |