5.0 mm x 3.2 mm Package Pinout ............................................................................................................................................... 1
Ordering Information .................................................................................................................................................................... 2
Device Configurations and Pin-outs ............................................................................................................................................. 9
Pin-out Top Views................................................................................................................................................................. 9
Test Circuit Diagrams for LVCMOS and Clipped Sinewave Outputs ......................................................................................... 10
Frequency Stability ............................................................................................................................................................. 15
Output Frequency and Format............................................................................................................................................ 15
Output Frequency Tuning ................................................................................................................................................... 15
Pin 1 Configuration (OE, VC, or NC) .................................................................................................................................. 16
Control Voltage Bandwidth ................................................................................................................................................. 19
Pull Range and Average Pull Range .................................................................................................................................. 21
Output Frequency ............................................................................................................................................................... 22
I
2
C Control Registers .......................................................................................................................................................... 24
Register Address: 0x00. Digital Frequency Control Least Significant Word (LSW) ............................................................ 24
Register Address: 0x01. OE Control, Digital Frequency Control Most Significant Word (MSW)......................................... 25
Register Address: 0x02. DIGITAL PULL RANGE CONTROL ............................................................................................ 26
Serial Interface Configuration Description .......................................................................................................................... 27
Serial Signal Format ........................................................................................................................................................... 27
Parallel Signal Format ........................................................................................................................................................ 28
Parallel Data Format ........................................................................................................................................................... 28
I
2
C Timing Specification ...................................................................................................................................................... 30
I
2
C Device Address Modes ................................................................................................................................................. 31
Schematic Example ............................................................................................................................................................ 32
Dimensions and Patterns ........................................................................................................................................................... 33
Additional Information ................................................................................................................................................................ 35
Revision History ......................................................................................................................................................................... 36
Rev 1.1
Page 3 of 36
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SiT5146
1 MHz to 60 MHz, ±0.5 to ±2.5 ppm, Endura™ Series Super-TCXO
Electrical Characteristics
All Min and Max limits are specified over temperature and rated operating voltage with 15 pF output load unless otherwise
stated. Typical values are at 25°C and 3.3 V Vdd.
Table 1. Output Characteristics
Parameters
Nominal Output Frequency Range
Operating Temperature Range
Symbol
F_nom
T_use
Min.
1
-20
-40
-40
-55
Acceleration (g) sensitivity, Gamma
Vector
F_g
–
–
Typ.
–
–
–
–
–
0.004
–
Max.
60
+70
+85
+105
+105
0.009
0.1
Unit
MHz
°C
°C
°C
°C
ppb/g
ppb/g
Extended Commercial, ambient temperature
Industrial, ambient temperature
Extended Industrial, ambient temperature
Extended Cold Industrial, ambient temperature
Ultra-low sensitivity grade; total gamma over 3 axes; 15 Hz
to 2 kHz; MIL-PRF-55310, computed per section 4.8.18.3.1
Low sensitivity grade; total gamma over 3 axes; 15 Hz to
2 kHz; MIL-PRF-55310, computed per section 4.8.18.3.1
Referenced to (max frequency + min frequency)/2 over the
rated temperature range. Vc=Vdd/2 for VCTCXO
Initial frequency at 25°C at 48 hours after 2 reflows
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