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參數(shù)資料
| 型號： | STPAC01F1 |
| 廠商： | 意法半導體 |
| 英文描述： | RF DETECTOR FOR POWER AMPLIFIER CONTROL |
| 中文描述： | 射頻檢測器的功率放大器控制 |
| 文件頁數(shù)： | 3/6頁 |
| 文件大小： | 87K |
| 代理商： | STPAC01F1 |
STPAC01F1
3/6
Coupler
GND2
Out
GND1
V
DCOut
I
DC
= 50μA
I
DC
= 50μA
STPAC01F1
RF input
V
BIAS
V
temp
Thermal
compensation
Low pass
filter
RF detector
-
+
APPLICATION DIAGRAM
The STPAC01 is the first part of the power amplifier stage and provides both RF power and die
temperature measurements. The above figure gives the basic circuit of RF detector.
A coupler located on the line between RF amplifier output and the antenna takes a part of the available
power and applies it to STPAC01 RF input.
The RF detector and the low pass filter provide a DC voltage depending on the input power. Thermal
compensation provides a DC voltage depending on the ambient temperature. As the detection system and
the thermal compensation are based on the same topology, VDCout will have the same temperature
variation as Vtemp. Connected to a differential amplifier, the output will be a voltage directly linked to the
RF input power. VDCout and Vtemp must be bias with 50μA DC current.
This topology offers the most accurate output value as it is 100% compensated.
V
DCOut
I
DC
RF in
V
BIAS
DC output
voltage
RF generator
Power
supply
Current
generator
STPAC
test board
Multimeter
Fig. 1:
V
DCout
measurement circuit.
0.8
1
1.2
1.4
1.6
1.8
2
-20
-15
-10
-5
0
5
10
Pin (dBm)
VDCout
850MHz
1850MHz
Tamb = 25°C
Ibias = 50μA
Vbias = 2.7V
Fig. 2:
V
DCout
versus RF input power.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| STPAC01F2 | 功能描述:射頻無線雜項 RF DETECTN/temp COMP RoHS:否 制造商:Texas Instruments 工作頻率:112 kHz to 205 kHz 電源電壓-最大:3.6 V 電源電壓-最小:3 V 電源電流:8 mA 最大功率耗散: 工作溫度范圍:- 40 C to + 110 C 封裝 / 箱體:VQFN-48 封裝:Reel |
| STPAC01F2_08 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:IPAD TM, RF detector for power amplifier control |
| STPAC02F1 | 功能描述:射頻無線雜項 Pwr Amp RF Detect RoHS:否 制造商:Texas Instruments 工作頻率:112 kHz to 205 kHz 電源電壓-最大:3.6 V 電源電壓-最小:3 V 電源電流:8 mA 最大功率耗散: 工作溫度范圍:- 40 C to + 110 C 封裝 / 箱體:VQFN-48 封裝:Reel |
| STP-BB-UA | 制造商:OMRON Electronic Components LLC 功能描述: |
| ST-PBR4 | 制造商:Radio Design Labs 功能描述:Mounting Bracket, For 4 Stick-On Modules 制造商:RADIO DESIGN LABS 功能描述:MOUNTING BRACKET FOR 4 STICK-ON MODULES |
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