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BU2294AF

ETC
Part Number BU2294AF
Manufacturer ETC
Description Clock generator
Published Sep 23, 2005
Detailed Description 00W014A Clock generator IC BU2294AF Description The BU2294AF is an IC which produces dual clocks required for a game ...
Datasheet PDF File BU2294AF PDF File

BU2294AF
BU2294AF

Overview
00W014A Clock generator IC BU2294AF Description The BU2294AF is an IC which produces dual clocks required for a game machine from an external crystal oscillator for PAL and a built-in 2-channel PLL.
Three kinds of frequencies; 53.
203425MHz, 67.
735842MHz and 4.
433619MHz can be outputted with low jitter and high S/N.
Dimension (Units : mm) SOP8 Features 1) Available with three output clock signals required for a game machine in one chip.
2) All output with low jitter, high S/N 3) No need for additional components, Built-in a PLL loop filter 4) 3.
3V single power supply Applications Game machines March, 2000 Absolute Maximum Ratings (Ta=25˚C) Parameter Power supply voltage Power dissipation Operating temperature range Storage temperature range Symbol VDD Pd Topr Tstg Limits +3.
0 ~ +3.
6 450 –5 ~ +70 –30 ~ +125 * Unit V mW ˚C ˚C * Derating : 4.
5mW/˚C for operation above Ta=25˚C.
Recommended Operating Conditions (Ta=25˚C) Parameter Power supply voltage Symbol VDD Min.
3.
0 Typ.
3.
3 Max.
3.
6 Unit V Electrical characteristics (Unless otherwise noted, Ta=25˚C, Vcc=3.
3V, XTAL=17.
734475MHz) Parameter Operating circuit current CLKA CLKB CLKC DUTY Jitter Symbol IDD CLKA CLKB CLKC DUTY Jstd1 Min.
— — — — 45 — Typ.
30 53.
203425 67.
735842 4.
433619 50 — Max.
50 — — — 55 100 Unit mA MHz MHz MHz % psec No load XTAL ¥ 120 ∏ 20 ∏ 2 XTAL ¥ 275 ∏ 36 ∏ 2 XTAL ∏ 4 1/2VDD test Short term Jitter 1s, No load Conditions Block Diagram 20divider 17.
734475MHz Oscillation circuit Phase Comparator Low-pass filter VCO (Voltage–controlled oscillator) 2divider 53.
203425MHz 120divider 106.
40685MHz 36divider Phase Comparator Low-pass filter VCO (Voltage-controlled oscillator) 2divider 67.
735842MHz 275divider 135.
471684MHz 4divider BU2294AF 4.
433619MHz ...


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