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参数资料
| 型号： | TRF2056PWR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | PLL合成/DDS/VCOs |
| 英文描述： | PLL FREQUENCY SYNTHESIZER, 1200 MHz, PDSO20 |
| 封装： | PLASTIC, SOP-20 |
| 文件页数： | 12/24页 |
| 文件大小： | 327K |
| 代理商： | TRF2056PWR |
TRF2056
LOW VOLTAGE 1.2GHz FRACTIONALN/INTEGERN SYNTHESIZER
SLWS111– NOVEMBER 2000
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
functional block diagram
Serial Control Shift Registers
Common Registers
EPM Registers SA7025 Registers
Conversion and Selection
CLOCK
STROBE
Fractional
Accumulator
FMOD
5
NF
4
Fractional
Compensation
Control Lines
Compensation
Charge Pump
Phase
Detector
Proportional
Charge Pump
Reference
Divider
Integral
Charge Pump
4
CK
18
N
12
NR
Phase
Detector
Auxiliary
Charge Pump
Auxiliary
Divider
4/1
12
NA
PA
REFIN
AUXIN
RF
RN
PHI
LOCK/
TEST
RA
PHA
Main Divider
(N/N+1)
RFIN
32/33
Prescaler
CL
2
CN
8
PHP
CL
2
CN
8
1 2 4 8
Select
2
SM
2
SA
3
1
5
6
8
10
17
14
16
13
18
9
11
DATA
2
Terminals 4, 7, 12, 15, and 20 are for supply voltage. Terminal 19 is for testing. These terminals are not shown.
Conversion and selection block provides emulation of SA7025 64/65/72 triple-modulus prescaler operation using the TRF2056 32/33
dual-modulus prescaler.
EM+EA
EM
EA
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