- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄44573 > LMX2330ATMX (NATIONAL SEMICONDUCTOR CORP) PHASE LOCKED LOOP, 2500 MHz, PDSO20 PDF資料下載
參數(shù)資料
| 型號： | LMX2330ATMX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | PLL合成/DDS/VCOs |
| 英文描述： | PHASE LOCKED LOOP, 2500 MHz, PDSO20 |
| 封裝： | 0.173 INCH, PLASTIC, TSSOP-20 |
| 文件頁數(shù)： | 3/17頁 |
| 文件大?。?/td> | 392K |
| 代理商： | LMX2330ATMX |
Functional Description (Continued)
PROGRAMMABLE DIVIDER (N COUNTER)
The N counter consists of the 7-bit swallow counter (A counter) and the 11-bit programmable counter (B counter). If the Control
Bits are 10 or 11 (10 for IF counter and 11 for RF counter) data is transferred from the 22-bit shift register into a 4-bit or 7-bit latch
(which sets the Swallow (A) Counter) and an 11-bit latch (which sets the 11-bit programmable (B) Counter), MSB first. Serial data
format is shown below. For the IF N counter bits 5, 6, and 7 are don’t care bits. The RF N counter does not have don’t care
bits.
7-BIT SWALLOW COUNTER DIVIDE RATIO (A COUNTER)
RF
Divide
Ratio
A
N
7
N
6
N
5
N
4
N
3
N
2
N
1
0
0000000
1
0000001
127
1111111
Note: Divide ratio: 0 to 127
B
≥ A
IF
Divide
Ratio
A
N
7
N
6
N
5
N
4
N
3
N
2
N
1
0
X
0000
1
X
0001
15
X
1111
X = DON’T CARE condition
11-BIT PROGRAMMABLE COUNTER DIVIDE RATIO (B COUNTER)
Divide
Ratio
B
N
18
N
17
N
16
N
15
N
14
N
13
N
12
N
11
N
10
N
9
N
8
3
00000000011
4
00000000100
2047
11111111111
Note: Divide ratio: 3 to 2047 (Divide ratios less than 3 are prohibited)
B
≥ A
PULSE SWALLOW FUNCTION
f
VCO = [(P xB)+ A]xfOSC/R
f
VCO:
Output frequency of external voltage controlled oscillator (VCO)
B:
Preset divide ratio of binary 11-bit programmable counter (3 to 2047)
A:
Preset divide ratio of binary 7-bit swallow counter
(0
≤ A ≤ 127 {RF}, 0 ≤ A ≤ 15 {IF}, A ≤ B)
f
OSC:
Output frequency of the external reference frequency oscillator
R:
Preset divide ratio of binary 15-bit programmable reference counter (3 to 32767)
P:
Preset modulus of dual moduIus prescaler (for IF ;P = 8or16;
for RF ; LMX2330A: P = 32 or 64
LMX2331A/32A: P = 64 or 128)
PROGRAMMABLE MODES
Several modes of operation can be programmed with bits R16–R20 including the phase detector polarity, charge pump
TRI-STATE and the output of the F
oLD pin. The prescaler and powerdown modes are selected with bits N19 and N20. The pro-
grammable modes are shown in
Table 1. Truth table for the programmable modes and F
oLD output are shown in Table 2 and
Table 3.
DS012331-15
www.national.com
11
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LMX2330LTMX/NOPB | PLL FREQUENCY SYNTHESIZER, 2500 MHz, PDSO20 |
| LMX2330LMWC | PLL FREQUENCY SYNTHESIZER, 2500 MHz, UUC |
| LMX2330LMDC | PLL FREQUENCY SYNTHESIZER, 2500 MHz, UUC |
| LMX2330LTM/NOPB | PLL FREQUENCY SYNTHESIZER, 2500 MHz, PDSO20 |
| LMX2331LTMX/NOPB | PLL FREQUENCY SYNTHESIZER, 2000 MHz, PDSO20 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMX2330L | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum⑩ Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2330LEVAL | 功能描述:BOARD EVALUATION LMX2330L RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 過時/停產(chǎn)零件編號 系列:PLLatinum™ 標(biāo)準(zhǔn)包裝:1 系列:- 傳感器類型:CMOS 成像，彩色（RGB） 傳感范圍:WVGA 接口:I²C 靈敏度:60 fps 電源電壓:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相關(guān)產(chǎn)品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP |
| LMX2330LSBX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinumTM Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2330LSLB | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum⑩ Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2330LSLBX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Serial-Input Frequency Synthesizer |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。