- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384657 > MAX2473EUT-T (MAXIM INTEGRATED PRODUCTS INC) 500MHz to 2500MHz VCO Buffer Amplifiers PDF資料下載
參數(shù)資料
| 型號： | MAX2473EUT-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： | MAX2473EUT-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)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX2472 | 500MHz to 2500MHz VCO Buffer Amplifiers |
| MAX2472-MAX2473 | 500MHz to 2500MHz VCO Buffer Amplifiers |
| MAX253 | Transformer Driver for Isolated RS-485 Interface |
| MAX253EUA | Transformer Driver for Isolated RS-485 Interface |
| MAX253CPA | Transformer Driver for Isolated RS-485 Interface |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX2473EVKIT | 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(chǎn)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 |
| MAX247CPL | 功能描述:RS-232接口集成電路 RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| MAX247EPL | 功能描述:RS-232接口集成電路 RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| MAX248C/D | 功能描述:RS-232接口集成電路 RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| MAX248C/D DIE | 制造商:Maxim Integrated Products 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。