參數(shù)資料
型號： MAX2685
廠商： Maxim Integrated Products, Inc.
英文描述： Low-Cost, 900MHz, Low-Noise Amplifier and Downconverter Mixer
中文描述： 低成本、900MHz、低噪聲放大器及下變頻混頻器
文件頁數(shù)： 1/10頁
文件大?。?/td> 188K
代理商： MAX2685
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
General Description
The MAX2685’s low-noise amplifier (LNA) and down-
converter mixer comprise the major blocks of an RF
front-end receiver. Optimized for 900MHz operation,
the device’s low noise figure, high gain, and high linear-
ity make it ideal for cellular, cordless, and wireless data
applications. A low supply current of 8.5mA (high-gain
mode) and 3.8mA (low-gain mode) plus a low operating
supply voltage range of +2.7V to +5.5V make it suitable
for use in 3-cell NiCd or 1-cell lithium-ion (Li+) battery
applications. A low-power shutdown mode further
extends battery life by reducing supply current below
0.1μA.
The MAX2685 includes an LNA, LNA bypass switch,
downconverter mixer, and local-oscillator (LO) buffer.
The LNA has a low noise figure of 1.4dB, a high gain of
15dB, and an input third-order intercept point (IP3) of
-4dBm. The mixer has a noise figure of 13dB, a gain of
6dB, and an input IP3 of +7dBm. In addition, an LNA
bypass switch allows two levels of gain, reducing
power consumption when high gain is not needed.
The downconverter mixer has a single-ended RF input
port and differential IF output ports. Differential opera-
tion of the IF ports offers improved even-order harmonic
rejection and increased immunity to noise. An LO buffer
allows the LO port to be driven with only -8dBm of LO
power. The MAX2685 is offered in a space-saving 16-
pin QSOP package.
Applications
900MHz ISM-Band Radios
868MHz European ISM Band
Cellular/Cordless Phones
Wireless Data
Features
o
800MHz to 1000MHz RF Frequency Range
o
+2.7V to +5.5V Single-Supply Operation
o
Integrated LNA + Mixer + LO Buffer
o
Logic-Controlled LNA Bypass Switch Reduces
Supply Current
o
LNA Performance (High/Low Gain)
Gain: +15dB/-12dB
NF: 1.4dB/12dB
Input IP3: -4dBm/+16dBm
o
Mixer Performance (High/Low Gain)
Gain: 6dB/4.6dB
NF: 13dB/12dB
Input IP3: +7dBm/-1.5dBm
o
Supply Current
8.5mA (High Gain)
3.8mA (Low Gain)
o
<0.1μA Supply Current in Shutdown Mode
o
0.8μs Receiver Enable Time
M
Low-Cost, 900MHz, Low-Noise Amplifier
and Downconverter Mixer
________________________________________________________________ Maxim Integrated Products
1
V
CC
SHDN
GND
IFOUT+
IFOUT-
MAX2685
LNAIN
GAIN
LNA
LO
LNAOUT MIXIN
LNA BYPASS
LO
BUFFER
MIXER
POWER
MANAGEMENT
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
LNAOUT
GND
V
CC
V
CC
MIXIN
GND
GND
IFOUT+
IFOUT-
TOP VIEW
MAX2685
QSOP
LNAIN
SHDN
GAIN
GND
GND
LO
GND
Functional Diagram
19-1493; Rev 0; 7/99
EVALUATION KIT MANUAL
PART
MAX2685EEE
-40°C to +85°C
TEMP. RANGE
PIN-PACKAGE
16 QSOP
FOLLOWS DATA SHEET
Pin Configuration
Ordering Information
相關(guān)PDF資料
PDF描述
MAX2685EEE Low-Cost, 900MHz, Low-Noise Amplifier and Downconverter Mixer
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MAX270EWP Digitally-Programmed, Dual 2nd-Order Continuous Lowpass Filters
MAX271CNG Digitally-Programmed, Dual 2nd-Order Continuous Lowpass Filters
MAX271CWG 6MM LIGHT TOUCH SW W/GND H=9.5
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX2685EEE 功能描述:射頻放大器 900MHz Low-Noise Downconverter RoHS:否 制造商:Skyworks Solutions, Inc. 類型:Low Noise Amplifier 工作頻率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 輸出截獲點:37.5 dBm 功率增益類型:32 dB 噪聲系數(shù):0.85 dB 工作電源電壓:5 V 電源電流:125 mA 測試頻率:2.6 GHz 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel
MAX2685EEE+ 功能描述:射頻放大器 900MHz Low-Noise Downconverter RoHS:否 制造商:Skyworks Solutions, Inc. 類型:Low Noise Amplifier 工作頻率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 輸出截獲點:37.5 dBm 功率增益類型:32 dB 噪聲系數(shù):0.85 dB 工作電源電壓:5 V 電源電流:125 mA 測試頻率:2.6 GHz 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel
MAX2685EEE+T 功能描述:射頻放大器 900MHz Low-Noise Downconverter RoHS:否 制造商:Skyworks Solutions, Inc. 類型:Low Noise Amplifier 工作頻率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 輸出截獲點:37.5 dBm 功率增益類型:32 dB 噪聲系數(shù):0.85 dB 工作電源電壓:5 V 電源電流:125 mA 測試頻率:2.6 GHz 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel
MAX2685EEE-T 功能描述:射頻放大器 900MHz Low-Noise Downconverter RoHS:否 制造商:Skyworks Solutions, Inc. 類型:Low Noise Amplifier 工作頻率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 輸出截獲點:37.5 dBm 功率增益類型:32 dB 噪聲系數(shù):0.85 dB 工作電源電壓:5 V 電源電流:125 mA 測試頻率:2.6 GHz 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel
MAX2685EVKIT 功能描述:射頻放大器 RoHS:否 制造商:Skyworks Solutions, Inc. 類型:Low Noise Amplifier 工作頻率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 輸出截獲點:37.5 dBm 功率增益類型:32 dB 噪聲系數(shù):0.85 dB 工作電源電壓:5 V 電源電流:125 mA 測試頻率:2.6 GHz 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel
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