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參數(shù)資料
| 型號： | LMX2512LQX0967/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | PLL合成/DDS/VCOs |
| 英文描述： | PLL FREQUENCY SYNTHESIZER, 19.68 MHz, QCC28 |
| 封裝： | 5 X 5 MM, 0.75 MM HEIGHT, LLP-28 |
| 文件頁數(shù)： | 6/18頁 |
| 文件大?。?/td> | 184K |
| 代理商： | LMX2512LQX0967/NOPB |
Programming Description (Continued)
R2 REGISTER
The R2 Register address bits (R2 [1:0]) are “10”.
The IF_CUR [1:0] bits program the IF charge-pump current. Considering the external IF VCO and loop filter, the user can select
the amount of IF charge pump current to be 100 A, 200 A, 300 A or 800 A.
R2 REGISTER
Register
MSB
SHIFT REGISTER BIT LOCATION
LSB
23
22
21
20
19
18
17
16
15
14
13
12
11
10
987654321
0
Data Field
Address
Field
R2
(Default)
IF_
CUR[1:0]
00100111011
01
0
1
00010
10
Name
Functions
IF_CUR [1:0]
IF Charge Pump Current
00 = 100 A
01 = 200 A
10 = 300 A
11 = 800 A
LMX2502/LMX2512
www.national.com
14
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| LMX2512LQX1065 | 功能描述:IC SYNTHESIZER PLL VCO 28-LLP RoHS:是 類別:RF/IF 和 RFID >> RF 其它 IC 和模塊 系列:PLLatinum™ 標(biāo)準(zhǔn)包裝:100 系列:* |
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