參數(shù)資料
型號(hào)： MAX2369EGM
廠商： Electronic Theatre Controls, Inc.
英文描述： PLASTIC ENCAPSULATED DEVICES
中文描述： 塑封器件
文件頁(yè)數(shù)： 15/16頁(yè)
文件大?。?/td> 237K
代理商： MAX2369EGM
M
Complete Dual-Band
Quadrature Transmitter
______________________________________________________________________________________
15
t
CS
t
CH
t
CWL
t
CWH
DI
NOTE:
THE 3-WIRE BUS IS SPI/QSPI/MICROWIRE-COMPATIBLE.
CLK
CS
t
ES
B19 (MSB)
B18
B0
A3
A1
A0 (LSB)
t
CS
> 50ns
t
CH
> 10ns
t
CWH
> 50ns
t
ES
> 50ns
t
CWL
> 50ns
t
EW
> 50ns
t
EW
Figure 3. 3-Wire Interface Diagram
IF Tank Design
The IF VCO tank (TANK+, TANK-) is fully differential.
The external tank components are shown in
Figure 4
.
The frequency of oscillation is determined by the follow-
ing equation:
C
INT
= Internal capacitance of TANK port
C
D
= Capacitance of varactor
C
VAR
= Equivalent variable tuning capacitance
C
PAR
= Parasitic capacitance due to PC board pads
and traces
C
CENT
= External capacitor for centering oscillation fre-
quency
C
C
= External coupling capacitor to the varactor
Internal to the IC, the charge pump will have a leakage
of less than 10nA. This is equivalent to a 300M
shunt
resistor. The charge-pump output must see an
extremely high DC resistance of greater than 300M
.
This will minimize charge-pump spurs at the compari-
son frequency. Make sure there is no solder flux under
the varactor or loop filter.
Layout Issues
The MAX2369 EV kit can be used as a starting point for
layout. For best performance, take into consideration
power-supply issues, as well as the RF, LO, and IF lay-
out.
Power-Supply Layout
To minimize coupling between different sections of the
IC, the ideal power-supply layout is a star configuration,
which has a large decoupling capacitor at a central
V
CC
node. The V
CC
traces branch out from this node,
each going to a separate V
CC
node in the MAX2369
circuit. At the end of each trace is a bypass capacitor
with impedance to ground less than 1
at the frequen-
cy of interest. This arrangement provides local decou-
pling at each V
CC
pin. Use at least one via per bypass
capacitor for a low-inductance ground connection.
Matching Network Layout
The layout of a matching network can be very sensitive
to parasitic circuit elements. To minimize parasitic
inductance, keep all traces short and place compo-
nents as close to the IC as possible. To minimize para-
sitic capacitance, a cutout in the ground plane (and
any other planes) below the matching network compo-
nents can be used.
On the high-impedance ports (e.g., IF inputs and out-
puts), keep traces short to minimize shunt capacitance.
f
2
(C
C
C
C
) L
C
C
C
2 (C
+ C )
OSC
INT
CENT
VAR
PAR
VAR
D
C
D
+
=
+
+
=
×
1
π
L
C
D
C
CENT
C
PAR
C
C
C
C
C
D
MAX2369
C
INT
-R
n
Figure 4. Tank Port Oscillator
相關(guān)PDF資料
PDF描述
MAX2682EUT PLASTIC ENCAPSULATED DEVICES
MAX2682 400MHz to 2.5GHz, Low-Noise, SiGe Downconverter Mixers
MAX2682EUT-T 400MHz to 2.5GHz, Low-Noise, SiGe Downconverter Mixers
MAX3283EAUT PLASTIC ENCAPSULATED DEVICES
MAX3283EAUT-T 【15kV ESD-Protected 52Mbps, 3V to 5.5V, SOT23 RS-485/RS-422 True Fail-Safe Receivers
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX2369EGM+D 功能描述:射頻發(fā)射器 RF and RFID RoHS:否 制造商:Micrel 類型:ASK Transmitter 封裝 / 箱體:SOT-23-6 工作頻率:300 MHz to 450 MHz 封裝:Reel
MAX2369EGM+TD 功能描述:射頻發(fā)射器 Complete Dual-Band Quadrature Txr RoHS:否 制造商:Micrel 類型:ASK Transmitter 封裝 / 箱體:SOT-23-6 工作頻率:300 MHz to 450 MHz 封裝:Reel
MAX2369EGM-D 功能描述:射頻發(fā)射器 RoHS:否 制造商:Micrel 類型:ASK Transmitter 封裝 / 箱體:SOT-23-6 工作頻率:300 MHz to 450 MHz 封裝:Reel
MAX2369EGM-TD 功能描述:射頻發(fā)射器 RoHS:否 制造商:Micrel 類型:ASK Transmitter 封裝 / 箱體:SOT-23-6 工作頻率:300 MHz to 450 MHz 封裝:Reel
MAX2369EGM-TDG069 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
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

*
*
*