Temperature Compensated - TCXO Oscillators

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We offer a wide range of temperature compensated crystal oscillators for applications demanding a high stability, precision frequency source within a small space and at a reasonable cost

What are Temperature Compensated Oscillators?

The TCXO, Temperature Compensated Crystal Oscillator (Xtal oscillator), is a form of crystal oscillator used where a precision frequency source is required within a small space and at a reasonable cost.

By applying temperature compensation within the quartz crystal oscillator module, it is possible to considerably improve on the basic performance of the crystal.

Temperature Compensated Oscillators (TCXOs) use a temperature-sensitive reactance circuit in their oscillation loop to compensate for the frequency-temperature characteristics inherent to the crystal unit. This makes them more stable than other types of oscillators and they are used in applications where high stability is required such as in GPS receivers, mobile phones, and other communication equipment.

In view of their usefulness, a wide range of TXCOs is available from many suppliers in a whole variety of packages and mounts (surface, through-hole). Some TCXOs are compatible with the dual in line format used for many through hole mounted integrated circuits.

How to minimise the effects of temperature on the quartz crystal

Although crystal oscillators offer a highly stable form of oscillator, they are nevertheless affected by temperature. The type of crystal cut inside the oscillator can help to minimise the effects of temperature, but they are still affected to some degree.

For a crystal cut known as the AT cut, the drift with temperature can be minimised around normal ambient temperature, but the rate of drift will rise above and below this.

SiTime’s Elite Platform®, Elite X™, and Elite RF™ Super-TCXOs are precision timing solutions with exceptional dynamic performance and rich features. These devices solve deep-rooted timing problems for telecom, RF, networking, edge synchronisation, and precision GNSS applications. By combining tight-stability and low phase noise with the robust package of a ceramic TCXO, Si Time Super-TCXOs replace legacy quartz OCXOs while increasing reliability, lowering power, and reducing size.

Features:

Tight stability (±0.01 ppm to ±2.5 ppm), 1 to 220 MHz
Better dynamic stability than quartz (±0.5 ppb/℃ ∆F/∆T), resistant to airflow and thermal shock
-40℃ to 105℃ operation uniquely enables fan-less outdoor equipment
Low phase noise: -159 dBc/Hz at 10 kHz (19.2 MHz nominal)
Lower power consumption (110 mW, 2.5V) for battery-operated edge equipment
I2C digital frequency tuning eliminates external DAC and sensitivity to board noise
On-chip power supply noise filtering eliminates dedicated LDO

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Manufacturer Part No	Order Code	Description / Manufacturer	Price For	Price	Quantity	Frequency Nom	Frequency Stability + / -	Oscillator Case	Oscillator Output Compatibility	Supply Voltage Nom	Product Range	Operating Temperature Min	Operating Temperature Max
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LFTCXO063784	2443033 Data Sheet + RoHS	TCXO, Oscillator, 20 MHz, 0.14 ppm, SMD, 5mm x 3.2mm, Clipped Sinewave, 3.3 V, IQXT-210 IQD FREQUENCY PRODUCTS You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:2443033 2443033RL in Re-reel	1+ US$39.294	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	20MHz	0.14ppm	SMD, 5mm x 3.2mm	Clipped Sinewave	3.3V	IQXT-210	-40°C	85°C
LFTCXO075792	2805453 Data Sheet + RoHS	TCXO, 10 MHz, 0.28 ppm, SMD, 3.2mm x 2.5mm, Clipped Sinewave, 3.3 V, IQXT-220-1 IQD FREQUENCY PRODUCTS You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:2805453 2805453RL in Re-reel	1+ US$15.494 5+ US$15.011 10+ US$14.516 20+ US$14.072 40+ US$14.046 100+ US$13.551 500+ US$13.386 1000+ US$13.373 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	10MHz	0.28ppm	SMD, 3.2mm x 2.5mm	Clipped Sinewave	3.3V	IQXT-220-1	-40°C	85°C
LFTCXO063784	2443033RL Data Sheet + RoHS	TCXO, Oscillator, 20 MHz, 0.14 ppm, SMD, 5mm x 3.2mm, Clipped Sinewave, 3.3 V, IQXT-210 IQD FREQUENCY PRODUCTS You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Re-reel Packaging Options Suggested replacement for:2443033RL 2443033 in Cut Tape A US$5.00 re-reeling charge will be added for this product	1+ US$39.294	Restricted Item Minimum order of 10 items Multiples of 1 only Please enter a valid quantity Add Min: 10 Mult: 1	-	-	-	-	-	-	-	-
LFTCXO075792	2805453RL Data Sheet + RoHS	TCXO, 10 MHz, 0.28 ppm, SMD, 3.2mm x 2.5mm, Clipped Sinewave, 3.3 V, IQXT-220-1 IQD FREQUENCY PRODUCTS You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Re-reel Packaging Options Suggested replacement for:2805453RL 2805453 in Cut Tape A US$5.00 re-reeling charge will be added for this product	10+ US$14.516 20+ US$14.072 40+ US$14.046 100+ US$13.551 500+ US$13.386 1000+ US$13.373 More Pricing...	Restricted Item Minimum order of 10 items Multiples of 1 only Please enter a valid quantity Add Min: 10 Mult: 1	-	-	-	-	-	-	-	-
ECS-TXO-2520-33-250-AN-TR	3649734 Data Sheet + RoHS	TCXO, 25 MHz, 2.5 ppm, SMD, 2.5mm x 2mm, HCMOS, 3.3 V, ECS-TXO-2520 ECS INC INTERNATIONAL You previously purchased this product. View in Order History	Each (Supplied on Full Reel) Full Reel	1000+ US$1.664	Restricted Item Minimum order of 1000 items Multiples of 1000 only Please enter a valid quantity Add Min: 1000 Mult: 1000	25MHz	2.5ppm	SMD, 2.5mm x 2mm	HCMOS	3.3V	ECS-TXO-2520	-40°C	85°C

ASGTX5DAF1-156.2500	3501707 Data Sheet + RoHS Date/Lot Code	TCXO, 156.25 MHz, 3 ppm, SMD, 5mm x 3.2mm, LVDS, 3.3 V, ASGTX5 Series ABRACON You previously purchased this product. View in Order History	Each	1+ US$21.908 5+ US$19.177 10+ US$15.888 20+ US$14.237 40+ US$13.145 100+ US$12.268 500+ US$12.103 1000+ US$9.995 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	156.25MHz	3ppm	SMD, 5mm x 3.2mm	LVDS	3.3V	ASGTX5	-40°C	85°C

ECS-TXO-2520-33-120-AN-TR	3649621 Data Sheet + RoHS	TCXO, 12 MHz, 2.5 ppm, SMD, 2.5mm x 2mm, HCMOS, 3.3 V, ECS-TXO-2520 ECS INC INTERNATIONAL You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:3649621 3649621RL in Re-reel	1+ US$1.867 50+ US$1.829	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	12MHz	2.5ppm	SMD, 2.5mm x 2mm	HCMOS	3.3V	ECS-TXO-2520	-40°C	85°C

ECS-TXO-2520-33-120-AN-TR	3649621RL Data Sheet + RoHS	TCXO, 12 MHz, 2.5 ppm, SMD, 2.5mm x 2mm, HCMOS, 3.3 V, ECS-TXO-2520 ECS INC INTERNATIONAL You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Re-reel Packaging Options Suggested replacement for:3649621RL 3649621 in Cut Tape A US$5.00 re-reeling charge will be added for this product	50+ US$1.829	Restricted Item Minimum order of 100 items Multiples of 1 only Please enter a valid quantity Add Min: 100 Mult: 1	12MHz	2.5ppm	SMD, 2.5mm x 2mm	HCMOS	3.3V	ECS-TXO-2520	-40°C	85°C

SIT1552AI-JE-DCC-32.768E	2850217 Data Sheet + RoHS	TCXO, 32.768 kHz, 5 ppm, SMD, 1.5mm x 0.8mm, LVCMOS, SiT1552 SITIME You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:2850217 2850217RL in Re-reel	1+ US$1.676 50+ US$1.537 100+ US$1.397 250+ US$1.346 500+ US$1.295 1000+ US$1.081 5000+ US$1.06 10000+ US$1.039 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	32.768kHz	5ppm	SMD, 1.5mm x 0.8mm	LVCMOS	-	SiT1552	-40°C	85°C

SIT5356AI-FQ-33E0-25.000000X	2908699 Data Sheet + RoHS	TCXO, 25 MHz, 0.1 ppm, SMD, 5mm x 3.2mm, LVCMOS, 3.3 V, SiT5356 SITIME You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:2908699 2908699RL in Re-reel	1+ US$62.598	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	25MHz	0.1ppm	SMD, 5mm x 3.2mm	LVCMOS	3.3V	SiT5356	-40°C	85°C

SIT5357AI-FQ-33N0-100.000000X	2908703 Data Sheet + RoHS	TCXO, 100 MHz, 0.1 ppm, SMD, 5mm x 3.2mm, LVCMOS, 3.3 V, SiT5357 SITIME You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:2908703 2908703RL in Re-reel	1+ US$83.579 10+ US$79.273 25+ US$78.931 50+ US$78.60 100+ US$75.984 250+ US$74.46 1250+ US$72.949 2500+ US$71.425 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	100MHz	0.1ppm	SMD, 5mm x 3.2mm	LVCMOS	3.3V	SiT5357	-40°C	85°C

SIT5356AI-FQ-33E0-10.000000X	2908697 Data Sheet + RoHS	TCXO, 10 MHz, 0.1 ppm, SMD, 5mm x 3.2mm, LVCMOS, 3.3 V, SiT5356 SITIME You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:2908697 2908697RL in Re-reel	1+ US$171.475 10+ US$150.038 25+ US$124.32 50+ US$111.455 100+ US$102.895 250+ US$96.025 1250+ US$94.107 2500+ US$92.189 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	10MHz	0.1ppm	SMD, 5mm x 3.2mm	LVCMOS	3.3V	SiT5356	-40°C	85°C

DS32KHZSN#	3406815 Data Sheet + RoHS Date/Lot Code	TCXO, 32.768 kHz, 7.5 ppm, WSOIC, Square Wave, 5 V, DS32kHz ANALOG DEVICES You previously purchased this product. View in Order History	Each	1+ US$8.966 10+ US$8.42 46+ US$8.141 138+ US$7.836 276+ US$7.709 506+ US$7.557 1012+ US$6.998 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	32.768kHz	7.5ppm	WSOIC	Square Wave	5V	DS32kHz	-40°C	85°C

AST3TQ-T-25.000MHZ-28	3819890 Data Sheet + RoHS Date/Lot Code	TCXO, 25 MHz, 280 ppb, SMD, 7mm x 5mm, LVCMOS, 3.3 V, AST3TQ-28 ABRACON You previously purchased this product. View in Order History	Each	1+ US$19.926 3+ US$19.368 5+ US$18.821 10+ US$18.263 20+ US$17.894 50+ US$17.526 250+ US$17.361 500+ US$17.348 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	25MHz	280ppb	SMD, 7mm x 5mm	LVCMOS	3.3V	AST3TQ-28	-40°C	85°C

SIT1552AI-JE-DCC-32.768E	2850217RL Data Sheet + RoHS	TCXO, 32.768 kHz, 5 ppm, SMD, 1.5mm x 0.8mm, LVCMOS, SiT1552 SITIME You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Re-reel Packaging Options Suggested replacement for:2850217RL 2850217 in Cut Tape A US$5.00 re-reeling charge will be added for this product	100+ US$1.397 250+ US$1.346 500+ US$1.295 1000+ US$1.081 5000+ US$1.06 10000+ US$1.039 More Pricing...	Restricted Item Minimum order of 100 items Multiples of 1 only Please enter a valid quantity Add Min: 100 Mult: 1	-	-	-	-	-	-	-	-

SIT5155AI-FK-33E0-10.000000X	2908690 Data Sheet + RoHS	TCXO, 10 MHz, 0.5 ppm, SMD, 5mm x 3.2mm, LVCMOS, 3.3 V, SiT5155 SITIME You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:2908690 2908690RL in Re-reel	1+ US$55.258 10+ US$52.413 25+ US$51.943 50+ US$51.46 100+ US$49.555 250+ US$48.565 1250+ US$47.574 2500+ US$46.584 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	10MHz	0.5ppm	SMD, 5mm x 3.2mm	LVCMOS	3.3V	SiT5155	-40°C	85°C

SIT5156AI-FK-33E0-25.000000X	2908694 Data Sheet + RoHS	TCXO, 25 MHz, 0.5 ppm, SMD, 5mm x 3.2mm, LVCMOS, 3.3 V, SiT5156 SITIME You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:2908694 2908694RL in Re-reel	1+ US$47.371 10+ US$44.92 25+ US$44.729 50+ US$44.539 100+ US$40.958 250+ US$40.945 1250+ US$40.221 2500+ US$40.208 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	25MHz	0.5ppm	SMD, 5mm x 3.2mm	LVCMOS	3.3V	SiT5156	-40°C	85°C

ATX-11-F-32.000MHZ-F05-T	3773430 Data Sheet + RoHS Date/Lot Code	TCXO, 32 MHz, 0.5 ppm, SMD, 3.2mm x 2.5mm, Clipped Sinewave, ATX-11 ABRACON You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:3773430 3773430RL in Re-reel	1+ US$2.692 50+ US$2.68 100+ US$2.667 250+ US$2.654 500+ US$2.642 1000+ US$2.629 5000+ US$2.616 10000+ US$2.604 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	32MHz	0.5ppm	SMD, 3.2mm x 2.5mm	Clipped Sinewave	-	ATX-11	-40°C	85°C

ATX-11-F-26.000MHZ-F05-T	3773428 Data Sheet + RoHS Date/Lot Code	TCXO, 26 MHz, 0.5 ppm, SMD, 3.2mm x 2.5mm, Clipped Sinewave, ATX-11 ABRACON You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:3773428 3773428RL in Re-reel	1+ US$2.883 50+ US$2.642 100+ US$2.40 250+ US$2.311 500+ US$2.223 1000+ US$2.184 5000+ US$2.134 10000+ US$2.096 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	26MHz	0.5ppm	SMD, 3.2mm x 2.5mm	Clipped Sinewave	-	ATX-11	-40°C	85°C

ASTX-H11-10.000MHZ-T	3820138 Data Sheet + RoHS Date/Lot Code	TCXO, 10 MHz, 2.5 ppm, SMD, 3.2mm x 2.5mm, HCMOS, 3.3 V, ASTX-H11 ABRACON You previously purchased this product. View in Order History	Each (Supplied on Full Reel) Full Reel	1000+ US$4.166 5000+ US$4.077 10000+ US$4.001	Restricted Item Minimum order of 1000 items Multiples of 1000 only Please enter a valid quantity Add Min: 1000 Mult: 1000	10MHz	2.5ppm	SMD, 3.2mm x 2.5mm	HCMOS	3.3V	ASTX-H11	-30°C	75°C

ATX-12-F-32.000MHZ-F05-T	3773427 Data Sheet + RoHS Date/Lot Code	TCXO, 32 MHz, 0.5 ppm, SMD, 2.5mm x 2mm, Clipped Sinewave, ATX-12 ABRACON You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:3773427 3773427RL in Re-reel	1+ US$3.543 50+ US$3.467 100+ US$3.264 250+ US$3.099 500+ US$3.035 1000+ US$2.972 5000+ US$2.934 10000+ US$2.883 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	32MHz	0.5ppm	SMD, 2.5mm x 2mm	Clipped Sinewave	-	ATX-12	-40°C	85°C

DS32KHZN/DIP#	3404561 Data Sheet + RoHS Date/Lot Code	TCXO, 32.768 kHz, 7.5 ppm, SMD, 21.84mm x 11.68mm, Square Wave, 5 V, DS32kHz ANALOG DEVICES You previously purchased this product. View in Order History	Each	1+ US$8.395 22+ US$7.861 44+ US$7.709	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	32.768kHz	7.5ppm	SMD, 21.84mm x 11.68mm	Square Wave	5V	DS32kHz	-40°C	85°C

X1G0054210322	3597164 Data Sheet + RoHS Date/Lot Code	TCXO, 50 MHz, 0.5 ppm, SMD, 2.5mm x 2mm, Clipped Sinewave, 3.3 V, TG2520SMN EPSON You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:3597164 3597164RL in Re-reel	1+ US$0.786	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	50MHz	0.5ppm	SMD, 2.5mm x 2mm	Clipped Sinewave	3.3V	TG2520SMN	-40°C	85°C

ASTX-H12-12.000MHZ-T	3819844 Data Sheet + RoHS Date/Lot Code	TCXO, 12 MHz, 2.5 ppm, SMD, 2.5mm x 2mm, HCMOS, 3.3 V, ASTX-H12 ABRACON You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:3819844 3819844RL in Re-reel	1+ US$4.331 50+ US$4.077 100+ US$3.848 250+ US$3.835 500+ US$3.81 1000+ US$3.531 5000+ US$3.454 10000+ US$3.391 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	12MHz	2.5ppm	SMD, 2.5mm x 2mm	HCMOS	3.3V	ASTX-H12	-30°C	75°C

AST3TQ-T-10.000MHZ-50-C	3819889 Data Sheet + RoHS Date/Lot Code	TCXO, 10 MHz, 50 ppb, SMD, 7mm x 5mm, LVCMOS, 3.3 V, AST3TQ-50 ABRACON You previously purchased this product. View in Order History	Each	1+ US$119.659 3+ US$104.699 5+ US$86.754 10+ US$77.775 20+ US$71.793 50+ US$67.005 250+ US$63.411 500+ US$61.024 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	10MHz	50ppb	SMD, 7mm x 5mm	LVCMOS	3.3V	AST3TQ-50	-40°C	85°C