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+ €37.30	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+ €15.90 5+ €15.40 10+ €14.90 20+ €14.46 40+ €14.43 100+ €13.92 500+ €13.64 1000+ €13.36 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 €5.00 re-reeling charge will be added for this product	1+ €37.30	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 €5.00 re-reeling charge will be added for this product	10+ €14.90 20+ €14.46 40+ €14.43 100+ €13.92 500+ €13.64 1000+ €13.36 More Pricing...	Restricted Item Minimum order of 10 items Multiples of 1 only Please enter a valid quantity Add Min: 10 Mult: 1	10MHz	0.28ppm	SMD, 3.2mm x 2.5mm	Clipped Sinewave	3.3V	IQXT-220-1	-40°C	85°C
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+ €1.51	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

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+ €2.03 50+ €1.93 100+ €1.67 250+ €1.65 500+ €1.63	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 €5.00 re-reeling charge will be added for this product	100+ €1.67 250+ €1.65 500+ €1.63	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+ €1.52 50+ €1.40 100+ €1.28 250+ €1.23 500+ €1.17 1000+ €0.983 5000+ €0.97 10000+ €0.957 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+ €57.67	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

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+ €132.49 10+ €115.93 25+ €96.06 50+ €86.12 100+ €79.50 250+ €74.20 1250+ €72.72 2500+ €71.23 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+ €7.93 10+ €7.44 46+ €7.18 138+ €6.92 276+ €6.68 506+ €6.46 1012+ €6.23 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+ €18.14 3+ €17.63 5+ €17.13 10+ €16.62 20+ €16.29 50+ €16.00 250+ €15.99 500+ €15.98 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 €5.00 re-reeling charge will be added for this product	100+ €1.28 250+ €1.23 500+ €1.17 1000+ €0.983 5000+ €0.97 10000+ €0.957 More Pricing...	Restricted Item Minimum order of 100 items Multiples of 1 only Please enter a valid quantity Add Min: 100 Mult: 1	-	-	-	-	-	-	-	-

DS32KHZSN#T&R	2798765 Data Sheet + RoHS Date/Lot Code	TCXO, 32.768 kHz, 7.5 ppm, SOIC, Square Wave, 5 V, DS32kHz ANALOG DEVICES You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:2798765 2798765RL in Re-reel	1+ €6.89 10+ €6.48 25+ €6.28 100+ €6.08 250+ €5.88 500+ €5.68 1000+ €5.07 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	SOIC	Square Wave	5V	DS32kHz	-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+ €43.11 10+ €40.87 25+ €40.71 50+ €40.53 100+ €37.27 250+ €37.26 1250+ €37.05 2500+ €37.04 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

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+ €49.95 10+ €47.37 25+ €46.95 50+ €46.51 100+ €44.79 250+ €29.97 1250+ €29.37 2500+ €28.77 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

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+ €2.46 50+ €2.45 100+ €2.44 250+ €2.43 500+ €2.42 1000+ €2.41 5000+ €2.40 10000+ €2.39 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+ €2.58 50+ €2.37 100+ €2.15 250+ €2.07 500+ €1.99 1000+ €1.69 5000+ €1.66 10000+ €1.62 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+ €3.82 5000+ €3.74 10000+ €3.67	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+ €3.18 50+ €3.06 100+ €2.87 250+ €2.80 500+ €2.74 1000+ €2.64 5000+ €2.59 10000+ €2.55 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+ €9.48 22+ €8.88 44+ €8.28 110+ €7.90 264+ €7.78 506+ €7.62 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	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+ €0.724	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+ €3.94 50+ €3.72 100+ €3.50 250+ €3.48 500+ €3.46 1000+ €3.20 5000+ €3.14 10000+ €3.07 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+ €110.24 3+ €96.46 5+ €79.92 10+ €71.65 20+ €66.14 50+ €61.73 250+ €58.42 500+ €56.22 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

SIT5155AI-FK-33E0-20.000000X	2908691 Data Sheet + RoHS	TCXO, 20 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:2908691 2908691RL in Re-reel	1+ €29.96 10+ €29.95 25+ €29.94 50+ €29.93 100+ €29.33 250+ €28.73 1250+ €28.13 2500+ €27.54 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	20MHz	0.5ppm	SMD, 5mm x 3.2mm	LVCMOS	3.3V	SiT5155	-40°C	85°C