Ultra-Small µPower, 1 Hz to 32.768 kHz Programmable Oscillator
LoginThe SiT1534 is the first programmable oscillator capable of a frequency range between 32.768 kHz down to 1 Hz for true pulse-per-second (PPS) operation. SiTime's silicon MEMS technology enables the smallest footprint and chip-scale packaging. In the chip-scale package (CSP), these devices reduce footprint by as much as 80% compared to existing 2.0 x 1.2 mm SMD XTAL packages. Unlike XTALs, the SiT1534 oscillator output enables greater component placement flexibility and eliminates external load capacitors, thus saving additional component count and board space. And unlike standard oscillators, the SiT1534 features NanoDrive™, a factory-programmable output that reduces the voltage swing to minimize power.
| Oscillator Type | Hz to kHz XO |
| Frequency | 16 frequencies |
| Frequency Stability (ppm) | 75, 100, 250 |
| Output Type | LVCMOS, NanoDrive™ |
| NanoDrive™ | 300mV to 700mV, full swing LVCMOS |
| Operating Temperature Range (°C) | -10 to +70, -40 to +85 |
| Voltage Supply (V) | 1.2 to 3.63 |
| Package Type (mm²) | 1.5x0.8, 2.0x1.2 |
| Features | Hz to kHz frequencies |
| Availability | Production |
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Image: SiT1534 1508 4-pin package, top & bottom
Factory programmable down to 1 Hz
- Significantly reduces power compared to fixed 32.768 kHz XTAL
Smallest footprint in chip-scale (CSP): 1.5 x 0.8 mm
- Saves board space by up to 80% compared to the 2012 SMD
Small SMD package: 2.0 x 1.2 mm (2012)
- Pin-compatible to 2012 XTAL SMD
NanoPower: 900 nA (typ.)
- Extends battery life
Operates down to 1.2 V
- Supports coin-cell or supercap battery backup
NanoDrive™ reduced swing oscillator output
- Directly interfaces to MCU/PMIC/chipset XTAL IN
- Programmable output swing minimizes power
- Oscillator output eliminates load capacitor
No load or VDD filtering capacitors
- Eliminates any external capacitors
- Eliminates any external capacitors
- Eliminates load dependent startup issues
<100 ppm frequency stability over -40 °C to +85 °C temp. range
- 2x better stability compared to quartz
- Improves wireless connectivity and RTC accuracy
- Wireless mouse
- Wireless keypads
- Pulse-per-second (PPS) timekeeping
- RTC reference clock
- Battery management timekeeping
