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RF Power Detector
with Shutdown Control
Detailed Description
The MAX2209A power detector is designed to oper-
ate from 800MHz to 2.0GHz. The device is ideal for
PA
DIRECTIONAL
COUPLER
TO
ANTENNA
wideband code-division multiple access (WCDMA),
cdma2000 M , and high-speed downlink/uplink packet
access. The MAX2209A accepts an RF signal at the
input, and outputs a temperature-independent voltage
related to the input signal power. The output voltage
expressed in dBV is proportional to the input power
SMA
B1
GND
expressed in dBm. The device has a detection range
from -25dBm to 0dBm.
Applications Information
The typical application circuit, as taken from the
MAX2209A EV Kit, is shown in Figure 1. The IC can be
shut down by forcing the RFIN/ SHDN DC voltage low
TEST POINT
7.5k I
ADC
15pF
MAX2209A
A1 A2
OUT V CC
B2
RFIN/
SHDN
V CC
27pF
RF
INPUT
47pF
through a 2kω resistor. The output of the detector goes
to an ADC for further processing by the baseband sys-
2k I
50 I
tem. Connect a series resistor and shunt capacitor to the
MAX2209A output to reduce residual amplitude ripple.
The series resistor should not be less than 1k I .
EV kit gerber files, schematic, BOM, and updates are
available on the MAX2209A product page at Maxim’s
website ( www.maxim-ic.com ).
Layout
There are two areas that require attention: the GND pin
and the supply bypassing. Connect the GND pin to the
PCB ground with a GND via as close as possible, and
bypass V CC to ground with a capacitor as close as pos-
sible to the part.
SHDN
Figure 1. Typical Application Circuit from MAX2209A EV Kit
Chip Information
PROCESS: BIPOLAR
Package Information
For the latest package outline information and land patterns,
go to www.maxim-ic.com/packages . Note that a “+”, “#”, or
“-” in the package code indicates RoHS status only. Package
drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
PACKAGE
TYPE
4 UCSP
PACKAGE
CODE
B4+4
OUTLINE
NO.
21-0007
LAND
PATTERN NO.
—
cdma2000 is a registered trademark of the Telecommunications
Industry Association.
6
______________________________________________________________________________________
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相关代理商/技术参数
MAX2209AEBS+T10 功能描述:射频检测器 RF Power Detector RoHS:否 制造商:Skyworks Solutions, Inc. 配置: 频率范围:650 MHz to 3 GHz 最大二极管电容: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SC-88 封装:Reel
MAX2209AEBS+T10G45 功能描述:射频检测器 RF Power Detector RoHS:否 制造商:Skyworks Solutions, Inc. 配置: 频率范围:650 MHz to 3 GHz 最大二极管电容: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SC-88 封装:Reel
MAX2209AEBS+TG45 功能描述:射频检测器 RF Power Detector RoHS:否 制造商:Skyworks Solutions, Inc. 配置: 频率范围:650 MHz to 3 GHz 最大二极管电容: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SC-88 封装:Reel
MAX2209AEVKIT+ 功能描述:射频检测器 MAX2209A EVVKIT+ RoHS:否 制造商:Skyworks Solutions, Inc. 配置: 频率范围:650 MHz to 3 GHz 最大二极管电容: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SC-88 封装:Reel
MAX2209EBS+ 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:RF Power Detector
MAX2209EBS+T 功能描述:射频检测器 RF Power Detector RoHS:否 制造商:Skyworks Solutions, Inc. 配置: 频率范围:650 MHz to 3 GHz 最大二极管电容: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SC-88 封装:Reel
MAX2209EBS+T10 功能描述:射频检测器 RF Power Detector RoHS:否 制造商:Skyworks Solutions, Inc. 配置: 频率范围:650 MHz to 3 GHz 最大二极管电容: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SC-88 封装:Reel
MAX2209EBS+T10G45 功能描述:射频检测器 RF Power Detector RoHS:否 制造商:Skyworks Solutions, Inc. 配置: 频率范围:650 MHz to 3 GHz 最大二极管电容: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SC-88 封装:Reel