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參數(shù)資料
| 型號： | SP5668KGMP1T |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | 2.7GHz 3-Wire Bus Controlled Synthesiser |
| 中文描述： | 2.7GHz的3線總線控制合成器 |
| 文件頁數(shù)： | 5/12頁 |
| 文件大小： | 163K |
| 代理商： | SP5668KGMP1T |
5
SP5668
PHASE NOISE
The SP5668 has been designed to offer good phase noise
performance even when operated with a standard low profile
4MHz crystal and a high comparison frequency, e.g. 2MHz.
The typical phase noise performance measured in the
standard application is contained in Table 4. It has been
demonstrated that even higher levels of performance will be
achieved in a tuner application.
TEST MODES
The programmable divider output divided by two Fpd/2 and
the comparison frequency Fcomp, can be switched to ports P0
and P1 respectively.
The charge pump can be forced to either source or sink
current, and may be disabled to high impedance state.
The varactor DRIVE output can be disabled by the OS bit
within the data word, so switching the external transistor 'OFF'
and allowing an external voltage to be written to the varactor
line for tuner alignment purposes.
The test modes are described in Table 2.
Fig. 3 Data format and timing
R2
R1
R0
RATIO
Comparison Frequency with a 4MHz
external reference
2MHz
1MHz
500kHz
250kHz
125kHz
62.5kHz
31.25kHz
15.625kHz
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
2
4
8
16
32
64
128
256
Table 1 Reference division ratio
P1
X
0
0
1
1
P0
X
0
1
0
1
T0
0
1
1
1
1
FUNCTIONAL DESCRIPTION
Normal operation
Charge pump sink. LOCK output = Lo Z
Charge pump source. LOCK output = Hi Z
Charge pump disable. LOCK output = Lo Z
Port P1 = Fcomp: Port 0 = Fpd/2
X = Don't care
Table 2 Test modes
CLOCK
ENABLE
DATA
FREQUENCY DATA
2
26
2
25
2
24
2
23
2
22
2
21
2
20
2
19
2
18
2
17
2
16
2
0
P2
P1
P0
TO OS CO R2
R1
R0 PE
LSB
2
16
to 2
0
PE
t : Programmable divider ratio control bits
:
÷
2 Prescaler (Enable = 1, Disable = 0)
R2
P2, P1, P0
CO
OS
T0
R1
R0
,
,
t : Reference divider ratio control bits (see T
able 1)
t : Port control bits
t : Charge Pump current select (see T
able 3)
t : Drive output disable switch
t : T
est mode enable (see T
able 2)
MSB
相關PDF資料 |
PDF描述 |
|---|---|
| SP5668 | 2.7GHz 3-Wire Bus Controlled Synthesiser |
| SP5669KG | 2.7GHz I2C Bus Controlled Synthesiser |
| SP5669KGMP1S | 2.7GHz I2C Bus Controlled Synthesiser |
| SP5669KGMP1T | 2.7GHz I2C Bus Controlled Synthesiser |
| SP5669 | 2.7GHz I2C Bus Controlled Synthesiser |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SP5669 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:2.7GHz I2C Bus Controlled Synthesiser |
| SP5669_97 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:2.7GHz I2C Bus Controlled Synthesiser |
| SP5669KG | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:2.7GHz I2C Bus Controlled Synthesiser |
| SP5669KGMP1S | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:2.7GHz I2C Bus Controlled Synthesiser |
| SP5669KGMP1T | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:2.7GHz I2C Bus Controlled Synthesiser |
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