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BU2374FV Dataheets PDF



Part Number BU2374FV
Manufacturers Rohm
Logo Rohm
Description High Performance VCOs
Datasheet BU2374FV DatasheetBU2374FV Datasheet (PDF)

Video Accessory ICs High Performance VCOs for Image Sampling BU2373FV,BU2374FV No.11069EBT07 ●Description General-purpose VCO Series ICs (BU2373FV and BU2374FV) have a built-in VCO and phase comparator and facilitate the configuration of a PLL system through the external connection of a LPF and frequency divider. Furthermore, in order to facilitate the loop constant settings of the PLL system, the application manual has been enhanced to ensure studies on the application. ●Features 1) The VCO .

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Video Accessory ICs High Performance VCOs for Image Sampling BU2373FV,BU2374FV No.11069EBT07 ●Description General-purpose VCO Series ICs (BU2373FV and BU2374FV) have a built-in VCO and phase comparator and facilitate the configuration of a PLL system through the external connection of a LPF and frequency divider. Furthermore, in order to facilitate the loop constant settings of the PLL system, the application manual has been enhanced to ensure studies on the application. ●Features 1) The VCO enables midpoint settings within the range of oscillation through the external resistance. 2) The rising edge trigger type of phase comparator is built in. 3) Power-down mode setting can be made independently with the VCO and the phase comparator. 4) The VCO output frequency division can be selected on the SELECT pin. 5) Compact SSOP-B14 Package is adopted. ●Applications CRT, LCD monitor, and CD-RW ●Line up matrix VDD=3.0V Supply voltage VDD=3.3V VDD=5.0V Frequency range VDD=3.0V VDD=3.3V VDD=5.0V VCO-Frequency dividing mode Operating temperature range Package BU2373FV ○ ○ ○ 37~60MHz 37~65MHz 43~100MHz 1/2 -20~75℃ SSOP-B14 BU2374FV - ○ - - 37~60MHz - 1/4 -20~75℃ SSOP-B14 ●Absolute maximum ratings (Ta=25℃) Symbol Ratings Supply voltage VDD -0.5~7.0 Input voltage VIN -0.5~VDD+0.5 Storage temperature range Tstg -30~125 Power dissipation Pd 400 *1 Operating is not guaranteed. *2 In the case of exceeding Ta = 25℃, 4.0mW should be reduced per 1℃. *3 The radiation-resistance design is not carried out. *4 Power dissipation is measured when the IC is mounted to the printed circuit board. Unit V V ℃ mW www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 1/18 2011.08 - Rev.B BU2373FV,BU2374FV Technical Note ●Electrical characteristics ◎BU2373FV(Ta=25℃, VDD=3.0V, unless otherwise specified.) Parameter Limits Symbol Min. Typ. (VCO) VCO_IN input impedance Zi - 10 Consumption current (while in normal mode) Consumption current (while in standby mode) Idd(VCO) Idd_st(VCO) - 15 - Control voltage VI 0.5 - Max. 1 VDD-0.5 Unit Conditions MΩ mA With 60 MHz output µA VCO_INHIBIT=”H”, VCOIN=”L” V Oscillation range frange 37 - 60 MHz Bias resistor range Rbias 1.5 - 2.0 KΩ *1 Frequency sensitivity β1 - 23 - MHz/V *2 Output duty Duty 45 50 55 % Measured at a voltage of 1/2 of VDD (PFD) Consumption current (while in normal mode) Idd(PFD) - 0.5 - mA When 1 MHz is input to the FIN_A and B Consumption current (while in standby mode) Idd_st(PFD) - - 1 µA PFD_INHIBIT=”H”, FIN_A,B=”L” *1 Design guaranteed figures 37 MHz to 45 MHz when Rbias = 2.0 kΩ 50 MHz to 60 MHz when Rbias = 1.5 kΩ *2 Frequency sensitivity { f1 (VCOIN=2.0V)  f2 (VCOIN = 1.0V) } / 1.0V *3 If the SELECT pin is set to “H” and the output frequency is reduced to 1/2, the frequency range and the frequency sensitivity will be all reduced to 1/2. BU2373FV(Ta=25℃, VDD=5.0V, unless otherwise specified.) Parameter Symbol Min. Limits T.


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