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參數(shù)資料
| 型號： | LMX3162VBHX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 通信及網絡 |
| 英文描述： | Single Chip Radio Transceiver |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PQFP48 |
| 封裝： | 7 X 7 MM, PLASTIC, QFP-48 |
| 文件頁數(shù)： | 13/18頁 |
| 文件大小： | 399K |
| 代理商： | LMX3162VBHX |
Swallow Counter Divide Ratio (A-Counter)
(Continued)
Note:
Divide ratio must be from 0 to 63, and B must be
≥
A.
Programmable Counter Divide Ratio (B-Counter)
Divide Ratio, B
3
4
*
127
N13
0
0
*
1
N12
0
0
*
1
N11
0
0
*
1
N10
0
0
*
1
N9
0
1
*
1
N8
1
0
*
1
N7
1
0
*
1
Note:
Divide ratio must be from 3 to 127, and B must be
≥
A.
Programmable Reference Divider (R-Counter)
If the control bits are “10”, data is transferred from the 20-bit shift register into a latch, which sets the 5-bit R-counter. The serial
data format is shown below.
MSB
19
REGISTER’S BIT MAPPING
12
11
10
LSB
18
17
16
15
14
13
9
8
7
6
5
4
3
2
1
0
RESERVED
R-COUNTER’s Divide
Ratio
R5
R4
R3
C2
C1
X
X
X
X
X
X
X
X
X
X
X
X
X
R2
R1
1
0
Note:
X = Don’t Care Condition
Reference Counter Divide Ratio (R-Counter)
Divide Ratio, R
3
4
*
31
R5
0
0
*
1
R4
0
0
*
1
R3
0
1
*
1
R2
1
0
*
1
R1
1
0
*
1
Note:
Divide ratio must be from 3 to 31.
Pulse Swallow Function
f
vco
:
B:
A:
f
OSC
: Output frequency of the external reference frequency oscillator
R:
Preset divide ratio of binary 5-bit programmable reference counter (3 to 31)
P:
Preset modulus of dual modulus prescaler (32 or 64)
Output frequency of external voltage controlled oscillator (VCO)
Preset divide ratio of binary 7-bit programmable counter (3 to 127)
Preset divide ratio of binary 6-bit swallow counter (0
≤
A
≤
P, A
≤
B)
Receiver Functional Description
The simplified block diagram below shows the mixer, IF amplifier, limiter, and discriminator. In addition, the DC compensation cir-
cuit, doubler, and voltage regulator for an external LNA stage are shown.
L
www.national.com
13
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相關代理商/技術參數(shù) |
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|---|---|
| LMX321 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Single/Dual/Quad, General-Purpose, Low-Voltage, Rail-to-Rail Output Op Amps |
| LMX321_06 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Single/Dual/Quad, General-Purpose, Low-Voltage, Rail-to-Rail Output Op Amps |
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| LMX321AUK+T | 功能描述:運算放大器 - 運放 Single GP Low-V Rail-Rail Output RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
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