SiTime, Silicon MEMS Oscillators and Clock Generators

1 Hz to 32 kHz Solutions

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32khz

SiTime's SiT15xx MEMS-based 32 kHz solutions are ideal for replacing traditional quartz crystals (resonators) in wearable and mobile applications where space and power are critical. 

  • aceawards2014World's smallest footprint: 1.5 x 0.8 mm CSP
  • XTAL replacement in 2.0 x 1.2 mm SMD
  • Ultra-low power: <1 μA
  • NanoDrive™ output minimizes output power and directly interfaces to XTAL_OSC input
  • Low-voltage operation:
    • SiT153x: Optimized for regulated supply apps: 1.2V to 3.63V
    • SiT154x: Optimized for unregulated Li+ battery apps: 2.7V to 4.5V
  • Oscillator output eliminates external load caps
  • Internal filtering eliminates external Vdd bypass cap
  • Best frequency stability:
    • < 5 PPM (SiT1552 TCXO)
    • < 75 to 100 over temp. (SiT1553x/4x XO) 
    • < 10 PPM initial tolerance (SiT153x/4x XO)


Application Notes

icon Optimized SiT153x Drive Settings for 32 kHz Inputs of Low Power MCUs
icon
SiT1532 32 kHz Oscillator Frequency Stability

 

Device
Frequency
(KHz)
Temp. Range
(°C)
Stability
(PPM)
Package Size
(mm)
Voltage
(V)
Datasheet
For regulated power-supplies, the SiT153x and SiT1552 devices are optimized for low-voltage applications
and are ideal for coin-cell or super-cap battery backup requirements.
SiT1532 32.768 kHz -10 to 70
or
-40 to 85

10 (room),
75 to 100
(over temp.)

1.5 x 0.8 CSP 1.2 to 3.63
pdf datasheet
SiT1533 32.768 kHz -10 to 70
or
-40 to 85
20 (room),
75 to 100
(over temp.)
2.0 x 1.2 SMD 1.2 to 3.63
pdf datasheet
SiT1534

Programmable
1 Hz to 32.768 kHz

-10 to 70
or
-40 to 85
20 (room),
75 to 100
(over temp.)

1.5 x 0.8 CSP or 2.0 x 1.2 SMD

1.2 to 3.63
pdf datasheet
SiT1552 32.768 kHz 0 to 70
or
-40 to 85
5, 10 or 20 (over temp.)

1.5 x 0.8 CSP or 2.0 x 1.2 SMD

1.5 to 3.63
pdf datasheet

For unregulated power-supplies, the SiT154x family operates over the entire battery voltage range and is optimized for Li+ battery-powered applications.
SiT1542 32.768 kHz -10 to 70
or
-40 to 85
10 (room),
75 to 100
(over temp.)
1.5 x 0.8 CSP 2.7 to 4.5
pdf datasheet
SiT1543 32.768 kHz -10 to 70
or
-40 to 85
20 (room),
75 to 100
(over temp.)
2.0 x 1.2 SMD 2.7 to 4.5
pdf datasheet
SiT1544 Programmable
1 Hz to 32.768 kHz
-10 to 70
or
-40 to 85
20 (room),
75 to 100
(over temp.)
1.5 x 0.8 CSP or 2.0 x 1.2 SMD 2.7 to 4.5
pdf datasheet