參數(shù)資料
型號(hào)： RF2705
廠商： RF MICRO DEVICES INC
元件分類： 無(wú)繩電話/電話
英文描述： 887664300
中文描述： TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, PQCC24
封裝： 4 X 4 MM, PLASTIC, QFN-24
文件頁(yè)數(shù)： 16/24頁(yè)
文件大?。?/td> 379K
代理商： RF2705
5-128
RF2705
Rev A4 041026
Pin
22
Function
I SIG P
Description
In-phase I channel positive baseband input port.
Best performance is achieved when the ISIGP and ISIGN are driven
differentially with a 1.2V common mode DC voltage. The recom-
mended differential drive level (V
ISIGP
-V
ISIGN
) is 1.2V
P-P
for EDGE,
0.8V
P-P
W-CDMA modulation and 1.0V
P-P
for GMSK modulation.
This input should be DC-biased at 1.2V. In sleep mode an internal FET
switch is opened, the input goes high impedance and the modulator is
de-biased.
Phase or amplitude errors between the ISIGP and ISIGN signals will
result in a common-mode signal which may result in an increase in the
even order distortion of the modulation in the output spectrum.
DC offsets between the ISIGP and ISIGN signals will result in
increased carrier leakage. Small DC offsets may be deliberately
applied between the ISIGP/ISIGN and QSIGP/QSIGN inputs to can-
cel out the LO leakage. The optimum corrective DC offsets will change
with mode, frequency and gain control.
Common-mode noise on the ISIGP and ISIGN should be kept low as it
may degrade the noise performance of the modulator.
Phase offsets from quadrature between the I and Q baseband signals
results in degrades sideband suppression.
In-phase I channel negative baseband input port. See pin 22.
Interface Schematic
23
24
I SIG N
MODE B
See pin 22.
Mode control pin. See the Logic Truth table.
CMOS Logic inputs: Logic 0=0V to 0.4V; Logic 1=1.4V to V
CC
.
Ground for LO section, modular, biasing, variable gain amplifier, and
substrate.
See pin 6.
Pkg
Base
DIE FLAG
V
CC2
x1
相關(guān)PDF資料
PDF描述
RF2705PCBA-41X 887664400
RF2713 887667300
RF2721 QUADRATURE DEMODULATOR
RF2909 3V 915MHZ SPREAD-SPECTRUM TRANSMITTER IC
RF2915 433/868/915MHZ FSK/ASK/OOK TRANSCEIVER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
RF2705-000 制造商:TE Connectivity 功能描述:FUSE 40A 72V RESETTABLE - Bag
RF2705G 制造商:RFMD 制造商全稱:RF Micro Devices 功能描述:LOW NOISE, MULTI-MODE, QUAD-BAND, QUADRATURE MODULATOR AND PA DRIVER
RF2705G_1 制造商:RFMD 制造商全稱:RF Micro Devices 功能描述:LOW NOISE, MULTI-MODE, QUAD-BAND, QUADRATURE MODULATOR AND PA DRIVER
RF2705GPCBA-41X 制造商:RFMD 制造商全稱:RF Micro Devices 功能描述:LOW NOISE, MULTI-MODE, QUAD-BAND, QUADRATURE MODULATOR AND PA DRIVER
RF2705PB005 制造商:Hubbell Wiring Device-Kellems 功能描述:HAZ LOC LINKOSITY FEM, 5W, 20A
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*