QTT252-38.400MBN-T

QTT252 Temperature Compensated Crystal Oscillator Fuel The Digital World Features ● ● ● ● ● ● ● ● Applications Frequency range : 10MHz to 70MHz SMD seam sealing ceramic package Supply voltage : 1.8V ~ 3.3V Clipped Sinewave output Low power consumption Voltage control function available External dimensions (mm) L : 2.5 x W : 2.0 x H : 0.8 RoHS compliant & Pb free ● ● ● ● ● ● Mobile communications GNSS Smartphone, Mobile phone Wearables IoT devices Portable radio communications Electrical Characteristics Item Nominal Frequency Range (F0) Frequency Tolerance (Ftol) QTT252 Conditions 10MHz ~ 70MHz ±2.0 ppm Max. Note [1] ±0.5ppm, ±2.0ppm -30°C~+85°C, Note [2] ±1.0ppm -40°C~+85°C, Note [2] vs Temperature Frequency Stability vs Load ±0.2 ppm Max. Load ±10% vs Supply Voltage ±0.2 ppm Max. VDD ±5% Operating Temperature Range (T OTR) Supply Voltage (VDD) -30°C ~ +85°C -40°C ~ +85°C 1.8V, 2.5V, 3.3V Current Consumption (IDD) 2.0 mA Max. Output Type Clipped Sinewave Output Load 10kΩ // 10pF Output Level Start-up Time 0.8 V(p-p) Min. 5 ms Max. Note [3] Auto Frequency Control (AFC) Range ±7ppm ~ ±16ppm VCTCXO, optional, Note [4] Phase Noise -135 dBc/Hz Typ. at 1kHz offset Aging (Faging) ±1 ppm Max. Storage Temperature Range (TSTR) at 25°C, first year -55°C ~ +125°C Notes: [1] Refer to nominal frequency after 2 times of reflow at 25°C. [2] Refer to frequency at 25°C±2°C. [3] Decoupling capacitor is required in external circuit. [4] If supply voltage VDD = 3.3V or 2.5V, control voltage Vcon = 0.5*VDD ± 1.0V. If supply voltage VDD = 1.8V, control voltage Vcon = 0.5*VDD ± 0.8V. Rev. 1.05 Page 1 www.qstproducts.com QTT252 Temperature Compensated Crystal Oscillator Fuel The Digital World Dimensions Pin function Function Pin TCXO 1 VCTCXO GND or NC AFC 2 GND 3 OUTPUT 4 VDD Recommended pad layout (Unit: mm) Ordering Information QTT252 - 26.000M B G Frequency in Hz - T Packaging Method T Please contact us for available frequencies Tape & Reel Supply Voltage B C D Rev. 1.05 3.3 V 2.5 V 1.8 V Frequency Stability (over Temp.) N S G V I ± 2.0 ppm ± 2.0 ppm ± 0.5 ppm ± 0.5 ppm ± 1.0 ppm Page 2 ( -30°C ~ +85°C ), ( -30°C ~ +85°C ), ( -30°C ~ +85°C ), ( -30°C ~ +85°C ), ( -40°C ~ +85°C ), TCXO VCTCXO TCXO VCTCXO TCXO www.qstproducts.com QTT252 Temperature Compensated Crystal Oscillator Fuel The Digital World Packing (Unit: mm) Reflow Profile Solder melting point : 220°C, 60 sec. Min., 200 sec. Max. Peak temperature : 260°C, 10 sec. Min., 30 sec. Max. (°C) 10 sec 260 220 180 150 120 sec Rev. 1.05 60 sec Page 3 Time (sec) www.qstproducts.com