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參數資料
| 型號： | 935260845112 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | PLL合成/DDS/VCOs |
| 英文描述： | PLL FREQUENCY SYNTHESIZER, 2200 MHz, PDSO16 |
| 封裝： | 4.40 MM, PLASTIC, SOT-369-1, SSOP-16 |
| 文件頁數： | 14/18頁 |
| 文件大小： | 172K |
| 代理商： | 935260845112 |
1998
Nov
19
5
Philips
Semiconductors
Product
specication
Low-voltage
frequency
synthesizer
for
radio
telephones
UMA1021AM
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Table 1
Bit allocation; note 1
Notes
1. X = don’t care.
2. The test register (address 0000) should not be programmed with any other values except all zeros for normal operation.
3. Bit OOL sets the Out-Of-Lock detector (1 = enabled).
4. Bits CR1 and CR0 set the charge pump current ratio (see Table 2).
5. Bit sPON sets the software power-up for the synthesizer (see Table 3).
6. PM16 is the MSB of the main divider coefficient.
7. PR10 is the MSB of the reference divider coefficient.
FIRST IN
REGISTER BIT ALLOCATION
LAST IN
DATA FIELD
ADDRESS
dt16
dt15 dt14 dt13
dt12
dt11
dt10
dt9
dt8 dt7
dt6
dt5 dt4 dt3 dt2 dt1
dt0
ad3
ad2
ad1
ad0
test bits; note 2
0
X
OOL(3)
X
CR1(4)
CR0
X
sPON(5)
XXXXX
X
0
1
PM16(6)
main divider coefcient
PM0
0
1
0
X
PR10(7)
reference divider coefcient
PR0
0
1
0
1
Table 2
Charge pump current ratio; note 1
Note
1. Reference current for charge pump:
BIT CR1
BIT CR0
CHARGE PUMP
CURRENT
00
10
× I
set
01
18
× Iset
10
13
× Iset
11
17
× Iset
I
set
V
set
R
set
-----------
=
Table 3
Power-on programming
Notes
1. Signal level
a) L = LOW.
b) X = don’t care.
c) H = HIGH.
2. X = don’t care.
PIN PON(1)
BIT sPON(2)
SYNTHESIZER
STATE
L
X
off
X
0
off
H1
on
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