MB88161 Fujitsu Media Devices, MB88161 Datasheet
MB88161
Related parts for MB88161
MB88161 Summary of contents
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... DATA SHEET Spread Spectrum Clock Generator MB88161 DESCRIPTION MB88161 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. FEATURES • Input frequency : 20 MHz to 28 MHz (Multiplied by 1), 14 MHz to 40 MHz (Multiplied by 2) • ...
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... SPRD 18 OUT 2 (TOP VIEW XOUT SPRD MB88161 XIN 18 7 OUT MLTP I/O Description Modulation rate setting pin (with pull-up resistance) I ⎯ Non-connection pin (do not connect anything) ⎯ Non-connection pin (do not connect anything) ⎯ ...
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... CMOS hysteresis input • Pull-down resistor is disconnected OE signal 50 kΩ • CMOS output • I • Hi-Z output at OE= “L” MB88161 Remarks The value of pull-up resistor is switched by the input level of OE signal. 800 kΩ at OE= “L” (Typ) 22 kΩ at OE= “H” (Typ) OE= “ ...
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... MB88161 (Continued) Pin XIN XIN, XOUT XOUT 4 Circuit type 4 pF 500 kΩ Remarks • Oscillation circuit • Built-in feedback resistance : 500 kΩ (Typ) • Built-in oscillation stabilization capacitance : 4 pF (Typ) ...
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... Noise near the XIN pin and XOUT pin may cause the device to malfunction. Design printed circuit boards so that electric wiring of XIN pin or XOUT pin and the resonator do not intersect other wiring. Design the printed circuit board that surrounds the XIN pin and XOUT pin with ground. MB88161 5 ...
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... A glitchless IDAC (current output D/A converter) provides precise modulation, thereby dramatically reducing EMI Power Down PLL block Reference clock Power Down V SS Charge Phase V/I pump compare conversion Loop filter MB88161 PLL block Hi-Z control OUT Modulation clock output IDAC ICO Modulation clock output Modulation Modulation logic rate setting S0, S1 ...
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... MHz to 28 MHz 14 MHz to 40 MHz 28 MHz to 80 MHz Status Operation status Modulation type Down spread Center spread Modulation rate At center spread No modulation ± 0.5% ± 2.0% ± 1.0% MB88161 Remarks Default ⎯ Remarks ⎯ Default Remarks ⎯ Default Remarks ⎯ ⎯ ⎯ Default ...
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... MB88161 • Center spread Spectrum is spread (modulated) by centering on the non-spread frequency. Radiation level Example of center spread modulation rate ± 1.0% • Down spread Spectrum is spread (modulated) below the non-spread frequency. Modulation width 2.0% Radiation level Example of down spread modulation rate − 2.0% 8 Modulation width 2.0% − ...
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... T ST − − ⎯ V IOVER −1.0 (t ≤ IUNDER SS UNDER ≤ UNDER ≤ V − 1.0 V ≤ IUNDER SS OVER MB88161 Unit Max + 125 °C + 125 ° 1.0 (t ≤ OVER ⎯ ...
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... MB88161 RECOMMENDED OPERATING CONDITIONS Parameter Symbol Power supply voltage V DD “H” level input voltage V IH “L” level input voltage V IL Input clock duty cycle t DCI Operating temperature Ta WARNING: The recommended operating conditions are required in order to ensure the normal operation of the semiconductor device. All of the device’ ...
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... OUT 20 MHz to 80 MHz XIN, ⎯ XOUT =0.8 × =0.0V 500 IL OE, SPRD, V =0. S1, S0 MLTP MB88161 = Value Unit Typ Max ⎯ 7.0 11.0 mA ⎯ µ ⎯ ⎯ 0.2 × ⎯ ⎯ ...
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... MB88161 • AC Characteristics Parameter Symbol Input frequency f in Crystal oscillation f x frequency Output frequency f OUT Output clock rise time tr Output clock fall time tf Output clock duty cycle t DCC Modulation frequency f MOD Lock-Up time t LK Cycle-Cycle jitter t JC Output enable “L” width ...
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... CYCLE-CYCLE JITTER (t JC OUT Note : Cycle-cycle jitter indicates the difference between a certain cycle and the immediately succeeding (or preceding) cycle DCC × 0. − n n+1 MB88161 × 0. × 0. × 0. × 0. × 0. ...
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... MB88161 OUTPUT ENABLE “L” WIDTH (t OE POWER SUPPLY RISE TIME ( OUTPUT Hi-Z START TIME AFTER POWER DOWN ENTRY (t OE OUT OUTPUT Hi-Z RELEASE TIME • OUTPUT START TIME AFTER POWER DOWN EXIT • PIZ PIO OE OUT 14 ) OELW t OELW × 0. × ...
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... MODULATION WAVEFORM • Modulation rate ±1.0%, example of center spread OUT output frequency + 1.0 % Frequency at modulation OFF − 1.0 % • Modulation rate −2.0%, example of down spread OUT output frequency Frequency at modulation OFF − 2.0 % Time = 32 kHz (Typ) f MOD Time = 32 kHz (Typ) f MOD MB88161 15 ...
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... MB88161 LOCK-UP TIME V DD XIN OE Setting pin S1, S0, MLTP, SPRD OUT The clock stabilization wait time is required when the power is turned on. If the OE pin is fixed at “H” level, the maximum time after the power is turned on until the required clock is obtained is (the stabilization wait time of input clock to XIN pin) + (the lock-up time “t For the stabilization wait time of input clock to the XIN pin, check the characteristics of the resonator or oscillator used ...
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... Cycle-Cycle jitter characteristic cannot be guaranteed therefore advisable to perform processing such as cancelling a reset of the device at the succeeding stage after the lock-up time (lock-up time ) MB88161 17 ...
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... Capacitor of about 0.01 µF (connect a capacitor of good high frequency property (ex laminated ceramic capacitor) to close to this device Impedance matching resistor for board pattern (500kΩ) f XOUT Pin XOUT 17 8 MB88161 XIN LSI Internal 4 pF LSI External MLTP + C C ...
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... ORDERING INFORMATION Part no. MB88161PVB-G-EFE1 MB88161PVB-G-ERE1 Package 18-pin plastic BCC (LCC-18P-M05) MB88161 Emboss taping EF type ER type 19 ...
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... MB88161 PACKAGE DIMENSION 18-pin plastic BCC (LCC-18P-M05) 2.70±0.10 (.106±.004 INDEX AREA (.094±.004 0.05(.002) 2003 FUJITSU LIMITED C18058S-c-1 0.45±0.05 (.018±.002) (Mount height) 2.01(.079) 2.40±0.10 TYP 0.45(.018) TYP. 0.075±0.025 (.003±.001) (Stand off) Details of " ...
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... MB88161 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 ...