BU2294AF [ETC]
Clock generator IC; 时钟发生器IC
| 型号： | BU2294AF |
| 厂家： | 
ETC |
| 描述： | Clock generator IC |
| 文件： | 总2页 (文件大小：66K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
00W014A
Clock generator IC
BU2294AF
Description
Dimension (Units : mm)
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.
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
Symbol
VDD
Limits
+3.0 ~ +3.6
450
Unit
V
Power supply voltage
Power dissipation
*
Pd
mW
˚C
Operating temperature range
Storage temperature range
Topr
Tstg
–5
~
~
+70
+125
–30
˚C
* Derating : 4.5mW/˚C for operation above Ta=25˚C.
Recommended Operating Conditions (Ta=25˚C)
Parameter
Symbol
VDD
Min.
3.0
Typ.
3.3
Max.
3.6
Unit
V
Power supply voltage
(Unless otherwise noted, Ta=25˚C, Vcc=3.3V, XTAL=17.734475MHz)
Electrical characteristics
Typ.
30
Parameter
Symbol
IDD
Min.
—
Conditions
Max.
50
Unit
mA
Operating circuit current
No load
CLKA
CLKB
CLKC
DUTY
Jitter
CLKA
CLKB
CLKC
DUTY
Jstd1
—
XTAL ¥ 120 20
XTAL ¥ 275 36
2
2
53.203425
67.735842
4.433619
50
—
MHz
MHz
MHz
%
—
—
—
XTAL
1/2VDD test
Short term Jitter 1s , No load
4
—
45
—
55
—
100
psec
Block Diagram
20divider
VCO
Phase
Comparator
Low-pass
filter
(Voltage–controlled oscillator)
53.203425MHz
17.734475MHz
Oscillation circuit
2divider
106.40685MHz
120divider
36divider
VCO
(Voltage-controlled oscillator)
Phase
Comparator
Low-pass
filter
2divider
67.735842MHz
4.433619MHz
135.471684MHz
275divider
4divider
BU2294AF
相关型号：
©2020 ICPDF网 联系我们和版权申明