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參數(shù)資料
| 型號： | LTC5533EDE |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 衰減器 |
| 英文描述： | 300MHz to 11GHz Precision Dual RF Power Detector |
| 中文描述： | 300 MHz - 11000 MHz RF/MICROWAVE LINEAR DETECTOR, 12 dBm INPUT POWER-MAX |
| 封裝： | 4 X 3 MM, PLASTIC, MO-229, DFN, DE-12 |
| 文件頁數(shù)： | 9/12頁 |
| 文件大小： | 253K |
| 代理商： | LTC5533EDE |
LTC5533
9
5533f
APPLICATIU
Operation
The LTC5533 contains two RF detector dice in one pack-
age forming two independent RF detector channels. Each
channel provides RF power detection over frequencies
ranging from 300MHz to 11GHz. Channel functions include
an internal frequency compensated buffer amplifier with the
gain set to 2x, an RF Schottky diode peak detector and level
shift amplifier to convert the RF input signal to low frequency
and a delay circuit to avoid voltage transients at V
OUT
when
powering up. The LTC5533 has both shutdown and start-
ing voltage adjustment capabilities.
W
U
U
Buffer Amplifiers
The output buffer amplifiers are capable of supplying
typically 4mA into a load. These amplifiers have band-
widths of 2MHz and a fixed internal gain of two.
The V
OS
inputs control the DC input voltages to the buffer
amplifiers. V
OS
must be connected to ground if the DC
output voltage is not to be changed. The buffers are initially
trimmed to approximately 130mV with V
OS
connected to
ground.
The V
OS
pins are used to change the initial V
OUT
starting
voltage. This function enables the LTC5533 outputs to
span the input range of a variety of analog-to-digital
converters. V
OUT
will not change until V
OS
exceeds 130mV.
The voltage at V
OUT
for V
OS
>130mV and with no RF signal
present is:
V
OUT
= V
OS
V
OUT
will track V
OS
above 130mV.
RF Detectors
The internal RF Schottky diode peak detectors and level
shift amplifiers convert the RF input signals to a low
frequency signal. The detectors demonstrate excellent
efficiency and linearity over a wide range of input power.
The Schottky diodes are biased at about 55
μ
A and drive
25pF internal peak detector capacitors.
Applications
T
he LTC5533 can be used as a self-standing signal
strength measuring receiver for a wide range of input
signals from –32dBm to 12dBm for frequencies from
300MHz to 11GHz. Operation at higher frequencies is
achievable with reduced performance. Consult factory for
more information. Figure 1 plots the output voltage as a
function of RF input power of an 11GHz CW input signal.
V
CC1
V
OUT1
V
OS1
V
CC2
V
OUT2
V
OS2
RF
IN1
GND
SHDN1
RF
IN2
GND
SHDN2
1
2
3
4
5
6
12
11
10
9
8
7
13
C8
100pF
C9
OPT
C5
OPT
C4
OPT
C3
39pF
C6
39pF
J1
RF
IN1
J2
RF
IN2
R2
OPT
R1
OPT
C10
OPT
C7
0.1
μ
F
C2
100pF
C1
0.1
μ
F
V
2.7V TO 6V
V
OUT1
V
OS1
LTC5533
V
2.7V TO 6V
V
OUT2
V
OS2
SHDN2
5533 BD
SHDN1
Demo Board Schematic
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC5533EDE#PBF | 功能描述:IC RF POWER DETECTOR 12-DFN RoHS:是 類別:RF/IF 和 RFID >> RF 檢測器 系列:- 產(chǎn)品變化通告:Product Discontinuation 15/May/2006 標(biāo)準(zhǔn)包裝:3,000 系列:- 頻率:100MHz ~ 2GHz RF 型:手機(jī)，GSM，DCS，PCS 輸入范圍:- 精確度:- 電源電壓:2.7 V ~ 5.5 V 電流 - 電源:300µA 包裝:帶卷 (TR) 封裝/外殼:SC-74，SOT-457 其它名稱:NCS5000SNT1GOS |
| LTC5533EDE#TR | 制造商:Linear Technology 功能描述:Precision Dual RF Power Detector 12-Pin DFN EP T/R |
| LTC5533EDE#TRPBF | 功能描述:IC RF POWER DETECT 12-DFN RoHS:是 類別:RF/IF 和 RFID >> RF 檢測器 系列:- 產(chǎn)品變化通告:Product Discontinuation 15/May/2006 標(biāo)準(zhǔn)包裝:3,000 系列:- 頻率:100MHz ~ 2GHz RF 型:手機(jī)，GSM，DCS，PCS 輸入范圍:- 精確度:- 電源電壓:2.7 V ~ 5.5 V 電流 - 電源:300µA 包裝:帶卷 (TR) 封裝/外殼:SC-74，SOT-457 其它名稱:NCS5000SNT1GOS |
| LTC5535 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Precision 600MHz to 7GHz, RF Detector with Adjustable Gain and 12MHz Baseband Bandwidth |
| LTC5535ES6 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Precision 600MHz to 7GHz, RF Detector with Adjustable Gain and 12MHz Baseband Bandwidth |
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