TX-703/704 Temperature Compensated Crystal Oscillators (TCXO)

Product catalog summary

Overview: The TX-703 and TX-704 are temperature compensated crystal oscillators designed for excellent temperature stability and compliance with Stratum 3 standards. They offer CMOS and clipped sinewave outputs, good phase noise behavior, and an EFC option, all within a compact, low-profile design that is 100% RoHS compliant.

Specifications:

Frequency Range: 6.4 - 35 MHz, with standard frequencies including 10, 12.8, 19.2, 19.44, 20, 20.48, and 26 MHz. Frequencies up to 52 MHz are available on request for reduced stabilities.
Frequency Stability: Varies with temperature range, with a maximum deviation of ±0.28 ppm over -40 to +85°C.
Supply Voltage: Standard at 3.3 VDC with a current consumption of 6 mA at steady state.
RF Output: Clipped sinewave and HCMOS outputs with specific load and signal level parameters.
Phase Noise: Detailed phase noise specifications are provided for various frequencies.

Applications: These oscillators are suitable for wireline Stratum 3 applications, femto cells, test and measurement, and wireless communications.

Additional Parameters:

Weight: 1.0 g
Absolute Maximum Ratings: Supply voltage up to 6.0 V, operable temperature range from -40 to +85°C, and storage temperature range from -55 to +125°C.

Packaging and Handling: The oscillators are available in different package codes with specific dimensions and pin connections. Standard shipping methods and handling notes are provided.

Ordering Information: Detailed model codes are provided for ordering, specifying enclosure type, height, supply voltage, frequency control, RF output code, and temperature range & stability code.

Disclaimer: Vectron International reserves the right to make changes to the product and information without notice, and no liability is assumed for their use.

Catalog excerpts

TX-703/704 Temperature Compensated Crystal Oscillators (TCXO)-1

Page 1 of 5 TX-703 / TX-704 Temperature Compensated Crystal Oscillator • Excellent Temperature Stability • Stratum 3 compliant • CMOS and clipped sinewave output • Good Phase noise behaviour • EFC option • Small Size, low profi le • 100% RoHS Compliant • Frequency range 1 of 6.4 - 35 MHz • Standard Frequencies 1: 10, 12.8, 19.2, 19.44, 20, 20.48, 26MHz • up to 52MHz on request for reduced stabilities • Wireline Stratum 3 applications • Femto cell • Test & Measurment • Wireless Communications Previous Vectron Model Numbers - C2260, TX-700 Features Applications Performance Specifi cations Frequency Stabilities1,5 Parameter Min Typical Max Units Condition vs. operating temperature range (referenced to +25°C) -0.14 -0.28 -0.28 +0.14 +0.28 +0.28 ppm ppm ppm 0 to +50°C -20 to +70°C -40 to +85°C Options5 Initial tolerance vs. supply voltage change vs. load change vs. aging / 20 Years Overall tolerance -1.0 -0.2 -0.1 -2.5 -4.6 +1.0 +0.2 +0.1 +2.5 +4.6 ppm ppm ppm ppm ppm at time of shipment, nominal EFC VS ±5% static Load ±5% static Note:*Stratum 3 per GR-1244-CORE: <±4.6ppm for all causes and 20 years aging, holdover: <±0.37ppm over 24 hours TX-703 / TX-704

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TX-703/704 Temperature Compensated Crystal Oscillators (TCXO)-2

Page 2 of 5 Performance Specifi cations Supply Voltage (Vs) Parameter Min Typical Max Units Condition 2 Supply voltage (standard) 3.135 3.3 3.465 VDC Current consumption 6 mA steady state @ +25°C RF Output (Clipped Sinewave) Load R || C 99 10 10 11 11 kÙ pF Output Power 0.7 VPP @ 10kÙ || 10pF RF Output (HCMOS) Load 13.5 15 16.5 pF Signal Level (Vol) 0.3 VDC with Vs=3.3V and 15pF Load Signal Level (Voh) 3.0 VDC with Vs=3.3V and 15pF Load Rise and Fall time 5 ns Duty Cycle 40 50 60 % @ (Voh-Vol)/2 Frequency Tuning (EFC) Tuning Range Fixed TCXO; No adjust Option5 Tuning Range ±5.0 ±14.0 ±20.0 ppm...

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TX-703/704 Temperature Compensated Crystal Oscillators (TCXO)-3

Page 3 of 5 Cross Reference ListStandard Shipping MethodStandard Method Package Codes: 703 Type Height “H” G298 1.8mm Package Codes: 704 Type Height “H” G290 1.8mm Pin Connections: TX-703 1 Voltage Control (Vc) / Enable / N.C 2 Ground (Case) 3 RF Output 4 Supply Voltage Input ( Vs) Marking TX-70X Frequency .. AY Y W W Pin Connections: TX-704 1 I.C. 2 Ground (Case) 3 I.C. 4 GND 5 RF Output 6 N.C. 7 N.C. 8 Enable/N.C. 9 Supply Voltage Input ( Vs) 10 Voltage Control ( Vc) / N.C. Enable true table (optional): TX-703 Pin 1 Pin 3 High Data Open Data Low High Tristate Enable true table (optional): TX-704...

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TX-703/704 Temperature Compensated Crystal Oscillators (TCXO)-4

Page 4 of 5 Typical Measurement Data Phase Noise 3 TX703 @ 10 MHz MTIE according-1244-CORE: TX-703 @ 10 MHz Recommended Refl ow Profi le Profi le Feature Pb-Free Assembly/ Sn-Pb Assembly Profi le Feature Pb-Free Assembly/ Sn-Pb Assembly Average ramp-up rate (TL to TP) 3°C/second max. Time 25°C to Peak Temperature 8 minutes max. Preheat -Temperature Min TSmin -Temperature Min TSmax -Time (min to max) tS 150°C 200°C 60-180 seconds Time maintained above -Temperature (TL) -Time (tL) 217°C 60-150 seconds TSmax to TL -Ramp-up Rate 3°C/second max Time maintained above -Temperature (TL) -Time (tL) 217°C...

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TX-703/704 Temperature Compensated Crystal Oscillators (TCXO)-5

Page 5 of 5 Or dering Infor matio n 1, 5 TX-70X 0 - E A J - 287 0 - 10M0000000 Model Code 703: Enclosure G298 704: Enclosure G290 Height 0: 1.8mm Supply Voltage E: 3.3V Frequency Frequency Control 0: No Tuning 1: EFC: ±5.0 to 20ppm 2: Enable 3: Enable & EFC: ±5.0 to ±20ppm (only available for TX-704, 10-pin verion) RF Output Code A: HCMOS F: Clipped Sinewave Temperature Range & Stability Code E-287: -40°C to +85°C, ±0.28ppm J-287: -20°C to +70°C, ±0.28ppm P-147: 0°C to +50°C, ±0.14ppm Notes: 1. Contact factory for improved stabilities or additional product options. Not all options and codes are...

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