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Ultra-Small µPower, ±5 ppm, 32.768 kHz TCXO with In-System Auto-Calibration
LoginSiTime's TempFlat MEMS™ technology enables the first 32 kHz ±5 ppm Super-TCXO in a 1.2 mm2 chip-scale package. The SiT1568 is factory-calibrated over multiple temperature points to guarantee ±5 ppm all-inclusive frequency stability. And unlike any other TCXO on the market, this ultra-small TCXO includes a one-time, in-system auto-calibration feature that cancels out post-assembly board stressors such as overmold and underfill. The result is a 32 kHz TCXO that maintains ±5 ppm all-inclusive stability in a tiny 1.2 mm2 footprint - ideal for wearables, modules, and tiny IoT applications.

"Specs" | "Value" |
---|---|
Oscillator Type | 32kHz TCXO |
Frequency | 32.768 kHz |
Frequency Stability (ppm) | ±5 |
Output Type | LVCMOS |
Operating Temperature Range (°C) | -20 to +70, -40 to +85 |
Voltage Supply (V) | 1.8 |
Package Type (mm²) | 1.5x0.8 |
Features | In-system auto-calibration |
Availability | Production |
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Image: SiT1568 4-pin 1508 package, top & bottom
±5 ppm all-inclusive stability after overmold/underfill
- Maintains ±5 ppm stability after overmold/underfill for improved local timekeeping and improved system power
Smallest footprint in chip-scale (CSP): 1.5 x 0.8 mm
- Saves board space
In-system auto-calibration enables overmold
- Eliminates (cancels) board related stressors after assembly
Drives multiple loads
- Eliminates multiple discrete XTALs + load caps
Internal VDD supply filtering
- Eliminates external VDD bypass capacitor to maintain ultra-small footprint
Low jitter 4 nsRMS max integrated phase jitter (IPJ)
- Suitable for audio applications, eliminates discrete MHz XTAL
- Smart meters
- Smart watches
- Health and wellness monitors
- Connectivity modules (e.g. WiFi, BLE)