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參數(shù)資料
| 型號： | RF2488 |
| 廠商： | RF MICRO DEVICES INC |
| 元件分類： | 衰減器 |
| 英文描述： | MULTI-MODE DUAL-BAND LNA MIXER |
| 中文描述： | RF/MICROWAVE DOWN CONVERTER |
| 文件頁數(shù)： | 5/22頁 |
| 文件大?。?/td> | 483K |
| 代理商： | RF2488 |
Preliminary
8-127
RF2488
Rev A0 010905
8
F
Pin
1
Function
Low LNA
GND
GAIN SEL
Description
Low band LNA ground connection. As an option, an external inductor to
ground may be used to reduce LNA gain.
Interface Schematic
See pin 3.
2
CMOS compatible signal controlling both the low band and high band
LNA gain. Logic (0)=Low Gain, Logic (1)=High Gain.
Low band LNA input. The maximum VSWR is 2:1 (Cell/GSM RX band)
for both the gain and bypass mode. This pin is internally DC-biased
and should be DC blocked with a capacitor suitable for the frequency of
operation.
3
Low LNA IN
4
High LNA IN
High band LNA input. The maximum VSWR is 2:1 (DCS/PCS RX band)
for both the gain and bypass mode. This pin is internally DC-biased
and should be DC blocked with a capacitor suitable for the frequency of
operation.
5
High LNA
GND
High LNA
VCC
High LNA
OUT
GND
IF OUT SEL
High band LNA ground connection. Immediate grounding required
adjacent to pin.
See pin 4.
6
High band LNA supply voltage. Local bypass capacitor required.
7
High band LNA Output. Bias for the LNA is provided through this pin,
hence it should be connected to V
CC
through an inductor.
See pin 4.
8
9
Direct connection to ground.
IF output select state control pin. This CMOS compatible signal con-
trols the selection of the IF mixer output path (see the State Control
Truth Table). Local bypass capacitor required.
High band RF mixer input. Although the base of the mixer input transis-
tor is AC coupled, this pin serves a dual purpose of providing a DC-bias
path via external inductor to GND. The typical input impedance is 8
real and requires external matching to 50
.
10
High MIX IN
11
12
NC
High LO IN
High band local oscillator input. This pin is internally AC-coupled and
matched to 50
.
IF output. Open collector output, requires external matching compo-
nents and DC connection to V
CC
.
See pin 19.
13
IF2-
14
IF2+
IF output. Open collector output, requires external matching compo-
nents and DC connection to V
CC
.
Mixer supply voltage. Local bypass capacitor required.
See pin 13.
15
MXR VCC
Low LNA GND
Low LNA OUT
Low LNA IN
High LNA GND
High LNA OUT
High LNA IN
High MIX IN
IF2+
IF2-
1 pF
1 pF
1 pF
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PDF描述 |
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| RF2489 | DUAL-BAND/TRI-MODE CDMA LOW NOISE AMPLIFIER/MIXER |
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| RF2494 | HIGH FREQUENCY LNA/MIXER |
| RF2495 | 900MHZ 3V LOW CURRENT LNA/MIXER |
| RF2504 | VCO/HIGH-ISOLATION BUFFER AMPLIFIER |
相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| RF2488-000 | 制造商:TE Connectivity 功能描述:TRF250-090UT - Bag |
| RF2489 | 制造商:RFMD 制造商全稱:RF Micro Devices 功能描述:DUAL-BAND/TRI-MODE CDMA LOW NOISE AMPLIFIER/MIXER |
| RF2489_07 | 制造商:RFMD 制造商全稱:RF Micro Devices 功能描述:DUAL-BAND/TRI-MODE CDMA LOW NOISE AMPLIFIER/MIXER |
| RF2489-000 | 制造商:TE Connectivity 功能描述:TRF250-110UT - Bag |
| RF2489PCBA-41X | 制造商:RFMD 制造商全稱:RF Micro Devices 功能描述:DUAL-BAND/TRI-MODE CDMA LOW NOISE AMPLIFIER/MIXER |
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