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參數(shù)資料
| 型號： | UMA1020AM |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | XO, clock |
| 英文描述： | Low-voltage dual frequency synthesizer for radio telephones |
| 中文描述： | PLL FREQUENCY SYNTHESIZER, 1700 MHz, PDSO20 |
| 文件頁數(shù)： | 11/20頁 |
| 文件大小： | 159K |
| 代理商： | UMA1020AM |
1995 Jul 06
11
Philips Semiconductors
Product specification
Low-voltage dual frequency
synthesizer for radio telephones
UMA1020AM
SERIAL BUS TIMING CHARACTERISTICS
V
DD
= V
CC
= 3 V; T
amb
= 25
°
C unless otherwise specified.
Note
1.
The minimum pulse width (t
W
) can be smaller than 4
μ
s provided all the following conditions are satisfied:
a) Principal main divider input frequency
b) Auxiliary main divider input frequency
c) Reference dividers input frequency
SYMBOL
PARAMETER
MIN.
TYP.
MAX.
UNIT
Serial programming clock; CLK
t
r
t
f
T
cy
input rise time
input fall time
clock period
100
10
10
40
40
ns
ns
ns
Enable programming; E
t
START
t
END
t
W
t
SU;E
delay to rising clock edge
delay from last falling clock edge
minimum inactive pulse width
enable set-up time to next clock edge
40
20
4000
(1)
20
ns
ns
ns
ns
Register serial input data; DATA
t
SU;DAT
t
HD;DAT
input data to clock set-up time
input data to clock hold time
20
20
ns
ns
f
VCO
t
W
512
>
f
AI
W
t
>
f
XTAL
t
W
3
>
Fig.3 Serial bus timing diagram.
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| UMA1020M | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low-voltage dual frequency synthesizer for radio telephones |
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