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参数资料
| 型号： | LMX2326TMX/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | PLL合成/DDS/VCOs |
| 英文描述： | PLL FREQUENCY SYNTHESIZER, 2800 MHz, PDSO16 |
| 封装： | 0.173 INCH, LEAD FREE, PLASTIC, TSSOP-16 |
| 文件页数： | 5/19页 |
| 文件大小： | 342K |
| 代理商： | LMX2326TMX/NOPB |
1.0 Functional Description (Continued)
TABLE 6. FastLock Timeout Counter Value Programming
Timeout
3
7
11
15
19
23
27
31
35
59
63
(# PD Cycles) (Note
F11
0
1
0101010
01
(4)
F12
0
1100110
11
(8)
F13
0
0011110
11
(16)
F14
0
0000001
11
(32)
Note 8: The timeout counter decrements after each phase detector comparison cycle.
1.4 SERIAL DATA INPUT TIMING
10012709
Notes: Parenthesis data indicates programmable reference divider data.
Data shifted into register on clock rising edge.
Data is shifted in MSB first.
TEST CONDITIONS: The Serial Data Input Timing is tested using a symmetrical waveform around VCC/2. The test waveform has an edge rate of 0.6V/ns with
amplitudes of 1.84V @ VCC = 2.3V and 4.4V @ VCC = 5.5V.
1.5 PHASE COMPARATOR AND INTERNAL CHARGE PUMP CHARACTERISTICS
10012710
Notes: Phase difference detection range: 2
π to +2π
The Phase Detector Polarity F[6] = HIGH
The minimum width pump up and pump down current pulses occur at the ICPo pin when the loop is locked.
LMX2306/LMX2316/LMX2326
www.national.com
13
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