MB88151 Fujitsu Media Devices, MB88151 Datasheet
MB88151
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MB88151 Summary of contents
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... MB88151 DESCRIPTION MB88151 is a clock generator for EMI (Electro Magnetic Interference) reduction. The peak of unnecessary radi- ation noise (EMI) can be attenuated by making the oscillation frequency slightly modulate periodically with the internal modulator. It corresponds to both of the center spread which modulates frequency in modulation off as Middle Centered and down spread which modulates so as not to exceed frequency in modulation off ...
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... MB88151 (Continued) • Modulation clock Cycle-Cycle Jitter MB88151-100, 200 : Less than 100 ps MB88151-400 : Less than 150 ps MB88151-500 : Less than 200 ps • Low current consumption by CMOS process : 5 mA (24 MHz : Typ-sample, no load) • Power supply voltage : 3.3 V ± 0.3 V • Operating temperature : − 40 ° °C • ...
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... SEL0 SEL1 ENS CKOUT Note : For XIN and XOUT pins, see “ OSCILLATION CIRCUIT”. Circuit type 50 kΩ MB88151 Remarks • CMOS hysteresis input • CMOS hysteresis input with pull-up resistor 50 kΩ (Typ) • CMOS output = 4 mA • ...
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... MB88151 HANDLING DEVICES Preventing Latchup A latchup can occur if, on this device, (a) a voltage higher than V input or output pin or (b) a voltage higher than the rating is applied between V significantly increases the power supply current and may cause thermal destruction of an element. When you use this device, be very careful not to exceed the maximum rating ...
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... A glitchless IDAC (current output D/A converter) provides precise modulation, thereby dramatically reducing EMI PLL block V SS Charge V/I IDAC pump conversion Loop filter Modulation logic MB88151 PLL block MB88151 CKOUT Clock output ICO Modulation clock output Modulation rate setting/ Modulation enable setting 5 ...
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... MB88151 PIN SETTING When changing the pin setting, the stabilization wait time for the modulation clock is required. The stabilization wait time for the modulation clock take the maximum value of “ characteristics Lock-Up time”. ENS modulation enable setting ENS L H Note : Spectrum does not spread when “L” is set to ENS. The clock with low jitter can be obtained. Because of ENS has Pull-up resistance, spectrum spread when “ ...
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... Down spread Spectrum is spread (modulated) below the frequency in modulation off. Modulation width 3.0% Radiation level Down spread example of − 3.0% modulation rate −3.0% Frequency in modulation off MB88151 Frequency 7 ...
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... MB88151 ABSOLUTE MAXIMUM RATINGS Parameter Power supply voltage* Input voltage* Output voltage* Storage temperature Operation junction temperature Output current Overshoot Undershoot * : The parameter is based WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current, temperature, etc.) in excess of absolute maximum ratings. Do not exceed these ratings. ...
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... Input clock duty cycle ( DCI b a CKIN Pin Conditions Min ⎯ V 3.0 DD ⎯ × 0.80 XIN SEL0, SEL1, ⎯ ENS 16.6 MHz to XIN 40 33.4 MHz ⎯ ⎯ − MB88151 = 0 Value Unit Typ Max 3.3 3.6 V ⎯ ⎯ × 0. ⎯ °C 1 ...
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... Output voltage Output impedance Input capacitance Load capacitance Input pull-up resistance 10 (Ta = − 40 ° °C, V Pin Conditions No load capacitance output 24 MHz CC DD MB88151-100 “H” level output − CKOUT “L” level output CKOUT 8 ...
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... MB88151-200 (Multiply by 2) CKOUT MB88151-400 (Multiply by 4) MB88151-500 (2-frequency division) 0 2.4 V CKOUT Load capacitance 15 pF CKOUT 1.5 V ⎯ CKOUT ⎯ CKOUT MB88151-100, 200 No load capacitance ° σ Standard deviation MB88151-400 No load capacitance °C, CKOUT = 3 σ Standard deviation ...
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... MB88151 OUTPUT CLOCK DUTY CYCLE (t CKOUT INPUT FREQUENCY (f in CKIN OUTPUT SLEW RATE (SR) CKOUT Note : SR = (2.4 − 0. (2.4 − 0. CYCLE-CYCLE JITTER (t CKOUT Note : Cycle-cycle jitter is defined the difference between a certain cycle and immediately after (or, immediately before DCC 1/t ...
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... MODULATION WAVEFORM • ±1.5% modulation rate, Example of center spread CKOUT output frequency + 1.5 % Frequency at modulation OFF − 1.5 % • −1.0% modulation rate, Example of down spread CKOUT output frequency Frequency at modulation OFF − 0.5 % − 1.0 % Time = 12.5 kHz (Typ) f MOD Time = 12.5 kHz (Typ) f MOD MB88151 13 ...
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... MB88151 LOCK-UP TIME V DD XIN Setting pin SEL0, SEL1, ENS CKOUT If the setting pin is fixed at the “H” or “L” level, the maximum time after the power is turned on until the set clock signal is output from CKOUT pin is (the stabilization wait time of input clock to XIN pin) + (the lock-up time “t For the input clock stabilization time, check the characteristics of the resonator or oscillator used ...
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... Note : Note that a jitter characteristic of an input clock may cause an affect a cycle-cycle jitter characteristic. and required adjusting to the most suitable value of individual 1 2 LSI Internal R (1 MΩ) f XOUT Pin LSI External LSI Internal R (1 MΩ) f XOUT Pin LSI External OPEN MB88151 15 ...
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... Oscillation stabilization capacitance (see “ OSCILLATION CIRCUIT”.) Capacitor of 10 µF or higher Capacitor about 0.01 µF (connect a capacitor of good high frequency C 4 property (ex. laminated ceramic capacitor) to close to this device Impedance matching resistor for board pattern Xtal MB88151 ENS ...
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... SPECTRUM EXAMPLE CHARACTERISTICS The condition of the examples of the characteristic is shown as follows : Input frequency = 20 MHz (Output frequency = 20 MHz : Using MB88151-100 (Multiply by 1)), Power - supply voltage = 3.3 V, None load capacity, Modulation rate = ± 1.5% (center spread). Spectrum analyzer HP4396B is connected with CKOUT. The result of the measurement with RBW = 1 kHz (ATT use for − ...
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... Input frequency Part number MB88151PNF-G-100-JNE1 MB88151PNF-G-200-JNE1 MB88151PNF-G-400-JNE1 MB88151PNF-G-500-JNE1 MB88151PNF-G-100-JN-EFE1 MB88151PNF-G-200-JN-EFE1 MB88151PNF-G-400-JN-EFE1 MB88151PNF-G-500-JN-EFE1 MB88151PNF-G-100-JN-ERE1 MB88151PNF-G-200-JN-ERE1 MB88151PNF-G-400-JN-ERE1 MB88151PNF-G-500-JN-ERE1 18 Multiplier Output frequency range ratio Multiplied ...
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... Note 4) Pins width do not include tie bar cutting remainder. 0.22 .009 3.90±0.30 6.00±0.40 45 ˚ 0.40(.016) "A" 0.13(.005) M Dimensions in mm (inches) Note: The values in parentheses are reference values. MB88151 +0.03 –0.07 +.001 –.003 Details of "A" part 1.55±0.20 (Mounting height) (.061±.008) 0.25(.010) 0~8 ˚ 0.50±0.20 0.15± ...
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... MB88151 FUJITSU LIMITED All Rights Reserved. The contents of this document are subject to change without notice. Customers are advised to consult with FUJITSU sales representatives before ordering. The information, such as descriptions of function and application circuit examples, in this document are presented solely for the purpose of reference to show examples of operations and uses of Fujitsu semiconductor device ...