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參數(shù)資料
| 型號： | LMV242 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Dual Output, Quad-Band GSM/GPRS Power Amplifier Controller |
| 中文描述： | 雙輸出，四頻GSM / GPRS功率放大器控制器 |
| 文件頁數(shù)： | 5/16頁 |
| 文件大?。?/td> | 560K |
| 代理商： | LMV242 |
Bond Pad mechanical Dimensions
X/Y Coordinates
Pad Size
Signal Name
Out 1
Out 2
Comp2
V
DD
RF
IN
V
RAMP
TX_EN
BS
Comp1
GND
Pad Number
1
2
3
4
5
6
7
8
9
10
X
Y
X
92
92
92
92
92
92
92
92
92
92
Y
92
92
92
92
92
92
92
92
92
92
281
281
281
281
281
281
281
281
281
281
617
490
363
236
617
617
360
118
20
187
Note:
Dimensions of the bond pad coordinates are in μm Origin of the coordinates: center of the die Coordinates refer to the center of the bond pad
Pin Descriptions
Pin
4
10
7
Name
V
DD
GND
TX_EN
Description
Positive Supply Voltage
Power Ground
Schmitt-triggered logic input. A LOW shuts down the whole
chip for battery saving purposes. A HIGH enables the chip.
Schmitt-triggered Band Select pin. When BS = H, channel 1
(OUT1) is selected, when BS = L, channel 2 (OUT2) is
selected.
RF Input connected to the Coupler output with optional
attenuation to measure the Power Amplifier (PA) / Antenna
RF power levels.
Sets the RF output power level. The useful input voltage
range is from 0.2V to 1.8V, although voltages from 0V to V
DD
are allowed.
Connects an external RC network between the Comp1 pin
and the Comp2 pin for an overall loop compensation and to
control the closed loop frequency response. Conventional
loop stability techniques can be used in selecting this
network, such as Bode plots. A good starting value for the
RC combination will be C = 68 pF and R = 0
.
Frequency compensation pin. The BS signal switches this pin
either to OUT1 or to OUT2.
This pin is connected to the PA of either channel 1 or
channel 2.
Power Supply
Digital Inputs
8
BS
Analog Inputs
5
RF
IN
6
V
RAMP
Compensation
9
Comp1
3
Comp2
Output
1
2
Out1
Out2
Note:
1. All inputs and outputs are referenced to GND (pin 10).
2. For the digital inputs, a LOW is
<
0.8V and a HIGH is
>
1.8V.
3. RF power detection is performed internally in the LMV242 and only an RF power coupler with optional extra attenuation has to be used.
L
www.national.com
5
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LMV242LD | 功能描述:射頻檢測器 RoHS:否 制造商:Skyworks Solutions, Inc. 配置: 頻率范圍:650 MHz to 3 GHz 最大二極管電容: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SC-88 封裝:Reel |
| LMV242LD/NOPB | 功能描述:射頻檢測器 RoHS:否 制造商:Skyworks Solutions, Inc. 配置: 頻率范圍:650 MHz to 3 GHz 最大二極管電容: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SC-88 封裝:Reel |
| LMV242LDX | 功能描述:射頻檢測器 RoHS:否 制造商:Skyworks Solutions, Inc. 配置: 頻率范圍:650 MHz to 3 GHz 最大二極管電容: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SC-88 封裝:Reel |
| LMV242LDX/NOPB | 功能描述:射頻檢測器 RoHS:否 制造商:Skyworks Solutions, Inc. 配置: 頻率范圍:650 MHz to 3 GHz 最大二極管電容: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SC-88 封裝:Reel |
| LMV242MDA | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual Output, Quad-Band GSM/GPRS Power Amplifier Controller |
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