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參數(shù)資料
| 型號： | MAX2472EUT-T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 衰減器 |
| 英文描述： | 500MHz to 2500MHz VCO Buffer Amplifiers |
| 中文描述： | 500 MHz - 2500 MHz RF/MICROWAVE WIDE BAND LOW POWER AMPLIFIER |
| 封裝： | ULTRA SMALL, SOT-23, 6 PIN |
| 文件頁數(shù)： | 10/12頁 |
| 文件大?。?/td> | 242K |
| 代理商： | MAX2472EUT-T |
M
500MHz to 2500MHz
V CO Buffer Amplifiers
10
______________________________________________________________________________________
Applic ations Information
Input Considerations
The MAX2472/MAX2473 offer high-impedance inputs
ideal for low-distortion buffering of a VCO. For applica-
tions with discrete transistor-based oscillator designs,
simply AC-couple the oscillator directly to the input; the
buffer’s high input impedance results in minimal load-
ing on the oscillator. For use with 50
VCO modules,
determine the approximate input impedance (S11) of
the MAX2472/MAX2473 from the S parameter tables in
the Typical Operating Characteristics. Terminate the
buffer input with a shunt resistor “R
TERM
” such that
R
TERM
||
RE[S
11
] = 50
, and use a series blocking
capacitor between the shunt resistor and the device
input. This provides a very stable 50
termination and
increases reverse isolation. For those applications
needing both high gain and good input match, reac-
tively match the buffer inputs to 50
with simple two-
element matching circuits. Figure 1 shows an equivalent
input circuit of the MAX2472/MAX2473 IN pin.
Output Considerations
The MAX2472/MAX2473 outputs are configured as
open-collector output stages, allowing maximum flexi-
bility. To achieve maximum gain and output drive, reac-
tively match these outputs with a shunt inductor/choke
to V
CC
followed by a series capacitor (DC block). For
applications not requiring high gain and output drive
(PLL prescaler), use a simple resistor to V
CC
followed
by a DC blocking capacitor. Figure 2 shows an equiva-
lent circuit of the MAX2472/MAX2473 OUT pin(s).
Figure 3 shows an equivalent circuit of the MAX2473
BIAS pin.
Output Matc hing Circ uit
Table 1 lists recommended values for lumped-element
output matching circuits at certain frequencies. For fre-
quencies other than those specified, use the parame-
ters given in the Typical Operating Characteristics.
Layout and Power-S upply Bypassing
A properly designed PC board is essential to any
RF/microwave circuit. Be sure to use controlled imped-
ance lines on all high-frequency inputs and outputs.
Bypass the power supply with decoupling capacitors
V
CC
(PIN 6)
250
1k
33
1.3pF
GND
(PIN 5)
IN
(PIN 4)
Figure 1. Input Structure
V
CC
(PIN 6)
2k
OUT
10
GND
(PIN 2)
Figure 2. Output Structure
V
CC
(PIN 6)
BIAS
(PIN 3)
INTERNAL
1.2V
REFERENCE
GND
(PIN 2)
1k
Figure 3. BIAS Structure (MAX2473 only)
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX2472EVKIT | 功能描述:放大器 IC 開發(fā)工具 MAX2472/73 Eval Kit RoHS:否 制造商:International Rectifier 產品:Demonstration Boards 類型:Power Amplifiers 工具用于評估:IR4302 工作電源電壓:13 V to 23 V |
| MAX2473EUT | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube 制造商:Rochester Electronics LLC 功能描述: |
| MAX2473EUT+ | 制造商:Maxim Integrated Products 功能描述: 制造商:Maxim Integrated Products 功能描述:RF AMP CHIP SGL BFFR AMP 2.5GHZ 5.5V 6PIN SOT-23 - Rail/Tube |
| MAX2473EUT+T | 功能描述:射頻放大器 0.5GHz - 2.5GHz VCO Buffer Amp RoHS:否 制造商:Skyworks Solutions, Inc. 類型:Low Noise Amplifier 工作頻率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 輸出截獲點:37.5 dBm 功率增益類型:32 dB 噪聲系數(shù):0.85 dB 工作電源電壓:5 V 電源電流:125 mA 測試頻率:2.6 GHz 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel |
| MAX2473EUT-T | 功能描述:射頻放大器 0.5GHz - 2.5GHz VCO Buffer Amp RoHS:否 制造商:Skyworks Solutions, Inc. 類型:Low Noise Amplifier 工作頻率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 輸出截獲點:37.5 dBm 功率增益類型:32 dB 噪聲系數(shù):0.85 dB 工作電源電壓:5 V 電源電流:125 mA 測試頻率:2.6 GHz 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel |
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