參數(shù)資料
型號(hào)： RF2411PCBA-H
廠商： RF Micro Devices, Inc.
英文描述： LOW NOISE AMPLIFIER/MIXER
中文描述： 低噪聲放大器/混頻器
文件頁(yè)數(shù)： 4/14頁(yè)
文件大?。?/td> 260K
代理商： RF2411PCBA-H
8-26
RF2411
Rev A5 010717
8
F
Pin
1
Function
LNA IN
Description
This pin is NOT internally DC-blocked. An external blocking capacitor
must be provided if the pin is connected to a device with a DC path. A
value of 100pF is recommended for 900MHz and 22pF for 1800MHz.
Interface Schematic
2
GND
Ground connection. For best performance, keep traces physically short
and connect immediately to ground plane.
Same as pin 2.
3
4
5
6
GND
GND
GND
IF OUT+
Same as pin 2.
Same as pin 2.
Balanced open collector output of the mixer. External bias needs to be
supplied to this pin. This can be done with a resistor to V
CC
(see appli-
cation schematic, “1800MHz, Balanced Resistor Output Matching”),
with a balun (see application schematic, “1800MHz, Output Matching
with Balun”) or when used in a single-ended configuration (see applica-
tion schematic, “1800MHz, Single-Ended Resistive Output Matching”).
When using a resistor to V
CC
the resistor value will set the output
impedance. Typical values for this resistor are 200
to 1k
. A shunt
inductor/capacitor resonator to V
CC
is needed to maintain proper DC
voltage at the mixer. At low resistor values the resonator may be omit-
ted at the expense of gain, output power and IP3. To obtain maximum
gain and output power a balun as shown in application schematics
“1800MHz, Output Matching with Balun” and “850MHz, Output Match-
ing with Balun” is recommended. Using both outputs and matching
them correctly to a single ended load will result in a 6dB gain improve-
ment over the plain single ended configuration.
Same as pin 6 except complementary output.
7
8
IF OUT-
LO IN
See pin 6.
50
mixer LO input. This pin has an internal pull-up resistor to V
CC
and
is not DC-blocked. An external blocking capacitor must be provided if
the pin is connected to a device with a DC path. A value of 100pF is
recommended for 900MHz and 22pF for 1800MHz.
9
RF IN+
Balanced mixer RF Input port. This pin is NOT internally DC-blocked.
An external blocking capacitor must be provided if the pin is connected
to a device with a DC path. A value of 100pF is recommended for
900MHz and 22pF for 1800MHz. Matching is required; see the appli-
cations schematics. To minimize the noise figure it is recommended to
have a bandpass filter before this input. This will prevent noise at the
image frequency from being converted to the IF.
10
11
12
RF IN-
VCC2
VCC1
Same as pin 9 except complementary input.
See pin 9.
Supply voltage for the mixer bias circuits.
Supply Voltage for the LNA only. A 47pF external bypass capacitor is
required and an optional 0.01
μ
F will be required if no other low fre-
quency bypass capacitors are nearby. The trace length between the pin
and the bypass capacitors should be minimized. The ground side of the
bypass capacitors should connect immediately to ground plane.
LNA IN
IF OUT+
IF OUT-
LO IN
BIAS
RF IN-
RF IN+
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
RF2411PCBA-L 制造商:RFMD 制造商全稱:RF Micro Devices 功能描述:LOW NOISE AMPLIFIER/MIXER
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RF-2412D 制造商:RECOM 制造商全稱:Recom International Power 功能描述:ECONOLINE - DC/DC - CONVERTER
RF-2412DH 制造商:RECOM 制造商全稱:Recom International Power 功能描述:ECONOLINE - DC/DC - CONVERTER
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