PDF《Built in VCXO,》

125 °C Power dissipation PD

6901 mW

1 A measure value at mounting on 70mm x 70mm x 1.6mm glass epoxy substrate. In the case of exceeding Ta=25°C, 6.9mW should be reduced per 1°C. Recommended Operating Ratings Parameter Symbol Ratings Unit Supply voltage VDD 3.135 to 3.465 V Input H Voltage VIH 0.8VDD to VDD V Input L Voltage VIL 0.0 to 0.2VDD V Operating Temperature topr -10 to

75 °C Frequency Control Voltage Vc 0.0 to VDD V Output load CL

15 (MAX) pF

1 In case of Output load exceeds previous value , consideration should be adapted Rise Time and Fall Time for condition of use. 5/23 Datasheet Datasheet BU3087FV ?

2012 ROHM Co., Ltd. All rights reserved. www.rohm.com j TSZ22111?15?001 TSZ02201-0E3E0J500040-1-2 17.AUG.2012 Rev.001 Electrical Characteristics DC Characteristics (VDD=3.3V, Ta=25°C, Crystal Frequency=27.000000MHz, at No Load, unless otherwise specified) Parameter Symbol Limit Unit Conditions Min. Typ. Max. Output H voltage VOH VDD-0.4 - - V IOH=4.0mA Output L voltage VOL - - 0.4 V IOL=4.0mA Operating Circuit current IDD - 45.0 58.0 mA Output no load, ±0.50% Modulation Input H current

1 IupH -1.5 - 1.5 μA PDB, SSON, MODSEL1 Terminal VIH=VDD Input H current

2 IdnH 35.0 70.0 105.5 μA MODSEL2, TEST Terminal,VIH=VDD Input H current

3 IdirH -1.5 - 1.5 μA VCTRL Terminal,VIH=VDD Input L current

1 IupL -105.5 -70.0 -35.0 μA PDB, SSON, MODSEL1 Terminal VIL=0.0V Input L current

2 IdnL -1.5 - 1.5 μA MODSEL2, TEST Terminal,VIL=0.0V Input L current

3 IdirL -1.5 - 1.5 μA VCTRL Terminal,VIL=0.0V CLKOUT CLKOUT 74.248144 74.250000 74.251856 MHz VCTRL=1/2VDD Crystal Pullability fp ±80 ±105 ±130 ppm 0QVCTRLQVDD

1 Spread-Spectrum Modulation Frequency Fmod 32.5 34.5 36.5 kHz Triangular Modulation, Independently of Modulation Rate

1 This is a guarantee with only IC. It is finished with confirmation to operate with Crystal (DSX321G?8pF load) made in DAISHINKU CORP. AC Characteristics (VDD=3.3V, Ta=25°C, Crystal Frequency=27.000000MHz, Output load=15pF, unless otherwise specified) Following the table cannot test directly on characteristic when shipment, so it is a design guarantee. Parameter Symbol Limit Unit Conditions Min. Typ. Max. Duty Duty

45 50

55 % Measured at 1/2VDD Jitter 1σ JsSD -

35 - psec Period Jitter 1σ2 , in Spread-Spectrum OFF Jitter P-P JsABS -

180 - psec Period Jitter MIN-MAX value2 , in Spread-Spectrum OFF Jitter Cycle-to-Cycle JsCyCy -

180 - psec Cycle-to-Cycle Jitter, In ±0.50% Modulation Rise Time Tr - 1.2 - nsec Time between 0.2VDD and 0.8VDD Fall Time Tf - 0.7 - nsec Time between 0.8VDD and 0.2VDD Lock Up Time Tlock - -

1 msec

3 2 Jitter means center value when using Japan Tektronix : TDS7104 Digital Phosphor Oscilloscope.

3 Time between voltage supply leads to 3.135V and output clock gets stable. Spread-Spectrum Modulation Waveform Modulation Waveform is triangular. Modulation Rate is selectable among ±0.25%/±0.50%/±0.75%/±1.00%. In addition, Modulation Frequency is 34.5kHz without depending on Modulation Rate. ( Figure

4 shows ±0.50% Modulation Waveform. ) 74.250000MHz 74.250000MHz x (100 + 0.5)% 74.250000MHz x (100 - 0.5)% Modulation Frequency;

34.5kHz Figure 4. Spread-Spectrum Modulation Waveform 6/23 Datasheet Datasheet BU3087FV ? ........