ENG3369A

Document No. ETS11B-04777 1/7 REFERENCE SPECIFICATION Customer: MTK Item: CRYSTAL OSCILLATOR Type: NT2520SB Nominal frequency: 26 MHz Customer’s Spec. No.: ----------- NDK Spec. No.: For your reference we submit this specification. Please study and keep in your related document file. ENG3369A Charge: Sales NDK-TP Lilian Chiu Tel. +886-2-2555-0232 e-Mail: lilian@tp.ndk.com Engineer Engineering Dept. 3 A.Konda Tel. +81-4-2900-6634 e-Mail: konda@ndk.com Revision Record Rev. Date Items Contents Approved Checked Drawn ----- Apr. 23. 2015 Issue --- A.Konda A.Konda E.Hoshi NIHON DEMPA KOGYO CO., LTD. Form P-1E(2006.6.28) Document No. ETS11B-04777 2/7 1. Type 1 NT2520SB 2. Maximum Rating Item Rating unit Storage temp. range -55 to +125 C 3. Electrical specification Parameters Electrical Spec. Min. 1 Nominal frequency 2 Supply voltage 3 Current consumption 4 Output voltage 5 Operating temp. range 6 7 8 Typ. Max. 26 +2.18 Load impedance (resistance part) Load impedance (parallel capacitance) +2.3 Notes Units MHz +2.42 V 1.5 mA 0.8 1.2 Vp-p -40 +85 C 9 10 11 k 9 10 11 pF (-Earth) Clipped sine wave (DC-Coupling) DC-cut capacitor of output is not put in TCXO. Please add DC-cut capacitor (1000 pF) in output line. DC-cut capacitor Frequency stability 1. Frequency /Temperature characteristics -0.5 +0.5 ppm -30 to +85 C -3.0 +3.0 ppm -40 to -30 C Based on frequency at +25+/-2 C at control voltage (Vcont)=+1.15 V DC 9 2. Frequency/Voltage coefficient -0.1 +0.1 ppm 3. Frequency/Load coefficient -0.1 +0.1 ppm 4. Frequency tolerance -2.0 +2.0 ppm +2.3 V +/-5  (-40 to +85 C) (10 k//10 pF) +/-10  (-40 to +85 C) at +25+/-2C, after 2 times reflow soldering, based on nominal frequency at control voltage (Vcont)=+1.15 V DC 5. Long-term frequency stability -1.0 +1.0 ppm +2.0 V -15.0 -9.0 ppm +9.0 +15.0 ppm Year External adjustment 1.Control voltage (Vcont) 10 +0.3 +1.15 2.Frequency control range 3.Frequency change polarity Vcont= +0.3 V Vcont= +2.0 V based on frequency at (Vcont) = +1.15 V DC Positive NIHON DEMPA KOGYO CO., LTD. Form P-3E Document No. ETS11B-04777 3/7 Parameters Electrical Spec. Min. 11 Symmetry Typ. Notes Max. Units 40 60 % at -40 to +85C 45 55 % at +25 C Based on 0V. The output signal after DC cut capacitor passage More than 90% of final output voltage Less than +/-1.0 ppm of steady state frequency 12 Start-up time 2.0 ms 13 Stabilization time 3.0 ms -8 dBc (2nd) -10 dBc (3rd) -20 dBc (4th) -54 dBc/Hz @1 Hz offset -77 dBc/Hz @5 Hz offset -86 dBc/Hz @10 Hz offset -111 dBc/Hz @100 Hz offset -133 dBc/Hz @1 kHz offset -149 dBc/Hz @10 kHz offset -150 dBc/Hz @100 kHz offset 14 15 Harmonic distortion Phase noise 4. Reflow soldering Conditions of temperature profile (Refer to Fig.1) Soldering peak temp. +260 C 5. Marking (1) Manufacture Name(NDK symbol mark) (2) Trace code (3) Nominal frequency (MHz) (4) Lot No. 6. Inspection parameters Para 3.1, 3.3, 3.4, 3.9.1, 3.10.2, 5, 10.2 are inspected. The other parameters are guaranteed to be within specified characteristics by NDK design. Inspection data is not submitted for mass production lot. But only if requested, a copy of first lot production data will be submitted. NIHON DEMPA KOGYO CO., LTD. Form P-3E Document No. ETS11B-04777 4/7 7. Precaution in the storage Please keep the oscillator in the ordinary temperature and humidity that are suggested as below table. Before taking out of dry bag +5 C to +45 C 10 % to 75 % RH 6 months Temperature Humidity Period After taking out of dry bag +30 C max. 70 % max. 168 hours * (table) *It is desirable for the oscillator to be used within 168 hours after taking out of dry bag. Please pack the oscillator into used dry bag with a desiccant and seal it up by heat sealer etc. In case the heat sealer is not available, sealing up with cellophane tape or a vinyl tape will do. 8. Frequency establishment condition When output frequency is set, we suppose to have the ground pattern under the oscillator. 9. Washing Not available for washing. 10. Application drawing 10.1 Reliability assurance item ETS30B-00399 10.2 Dimension of External ETD14B-01523A 10.3 Land pattern ETD15B-00022A 11. Notice 11.1 Order items are manufactured according to specification. As to conditions, which are not indicated in this specification and unpredictable such as applied condition and oscillation margin, please check them beforehand. 11.2 If you use resin for fixing components during manufacturing, please keep resin from adhering to the oscillator. TEMP(蚓 ) 260 225 180 150 60 to 120sec. 60 to 90sec. DURATION (Fig.1) NIHON DEMPA KOGYO CO., LTD. Form P-3E Document No. ETS11B-04777 5/7 Reliability assurance item No. Test Item 1 Vibration 2 Shock 3 Drop Test 4 Humidity Specification code A Test Methods 5 to 26Hz: 1.52mm (total amplitude) 26 to 500Hz: 19.6m/s2 20 minutes per 1 cycle. 2 hours for each 3 planes. Half sine wave 6ms, 980 m/s2. 3 times for each 3 planes. Drop freely on the concrete from the height of 150cm With jig(150g). 3time for each 6 planes. +60C, 95 RH for 48H. And normal temperature, with normal humidity for 24H. (page: 1/1) Specification Code A A A A Specification After the test, shall meet electrical specification. Reliability assurance item: ETS30B-00399 NIHON DEMPA KOGYO CO., LTD. Form M-3 Document No. ETS11B-04777 6/7 Terminal land connections #1 VCONT #3 GND #4 OUTPUT #6 VCC #2／#5 N/C or GND A Date of Revise Charge Approved Reason 23.Aug.2013 R.Yoshizaki K.Moriya Change of Hatching and connection diagram (According to EEN01A-00005) Date Name Drawn Designed Checked 15.Jul.2011 15.Jul.2011 15.Jul.2011 K.Hasegawa K.Hasegawa A.Konda Approved 15.Jul.2011 K.Moriya Third Angle Projection Dimension:mm Title Dimension of External Tolerance +/- 0.2 Drawing No. ETD14B-01523 Scale 20/1 Rev. A NIHON DEMPA KOGYO CO., LTD. Form M-1 Document No. ETS11B-04777 7/7 Note) Please reserve a large ground pattern on the PCB where the oscillator is installed. A Date of Revise 17. Nov. 2011 Charge A.Fujii Drawn Designed Checked Date 18.Apr.2007 18.Apr.2007 18.Apr.2007 Name H.Harima H.Harima K.Moriya Approved 18.Apr.2007 H.Mizumura Approved Reason Note change Third Angle Projection Tolerance ----Dimension:mm K.Moriya Title Drawing No. Land pattern ETD15B-00022 Scale 30 / 1 Rev. A NIHON DEMPA KOGYO CO., LTD. Form M-1