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參數(shù)資料
| 型號(hào)： | TRF2056PWR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | PLL合成/DDS/VCOs |
| 英文描述： | PLL FREQUENCY SYNTHESIZER, 1200 MHz, PDSO20 |
| 封裝： | PLASTIC, SOP-20 |
| 文件頁數(shù)： | 22/24頁 |
| 文件大?。?/td> | 327K |
| 代理商： | TRF2056PWR |
TRF2056
LOW VOLTAGE 1.2GHz FRACTIONALN/INTEGERN SYNTHESIZER
SLWS111– NOVEMBER 2000
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
charge-pump current output definitions
I2
I1
I2
I1
Current
Voltage
IOUT REL
IOUT MATCH
ISINK
ISOURCE
IOUT REL
V1
V2
Figure 1. Charge-Pump Output Current Definitions
The relative output current variation is defined as the percent difference between charge-pump current output
at two charge-pump output voltages and the mean charge-pump current output (see Figure 1):
DI
OUT REL
I
OUT MEAN
+ 2
I
2 *
I
1
I
2 )
I
1
100%
where
V
1 +
0.7 V, V
2 +
V
DDA*
0.8 V.
Output current matching is defined as the difference between charge-pump sinking current output and
charge-pump sourcing current output at a given charge-pump output (see Figure 1).
DI
OUT MATCH +
I
SINK *
I
SOURCE
where
V
1 v
Voltage
v V
2
.
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