收藏本站
MAX2021
High-Dynamic-Range, Direct Up-/Downconversion
650MHz to 1200MHz Quadrature Mod/Demod
Pin Description
PIN
1, 5, 9 –12, 14, 16 –19, 22,
24, 27 –30, 32, 34 –36
NAME
GND
Ground
FUNCTION
2
RBIASLO3 3rd LO Amplifier Bias. Connect a 332 ā resistor to ground.
3
4
VCCLOA
LO
LO Input Buffer Amplifier Supply Voltage. Bypass to GND with 33pF and 0.1μF
capacitors as close as possible to the pin.
Local Oscillator Input. 50 ā input impedance. Requires a DC-blocking capacitor.
6
RBIASLO1 1st LO Input Buffer Amplifier Bias. Connect a 432 ā resistor to ground.
7
N.C.
No Connection. Leave unconnected.
8
RBIASLO2 2nd LO Amplifier Bias. Connect a 619 ā resistor to ground.
13
15
20
21
23
25
26
31
33
EP
VCCLOI1
VCCLOI2
BBI+
BBI-
RF
BBQ-
BBQ+
VCCLOQ2
VCCLOQ1
GND
I-Channel 1st LO Amplifier Supply Voltage. Bypass to GND with 33pF and 0.1μF
capacitors as close as possible to the pin.
I-Channel 2nd LO Amplifier Supply Voltage. Bypass to GND with 33pF and 0.1μF
capacitors as close as possible to the pin.
Baseband In-Phase Noninverting Port
Baseband In-Phase Inverting Port
RF Port. This port is matched to 50 ā . Requires a DC-blocking capacitor.
Baseband Quadrature Inverting Port
Baseband Quadrature Noninverting Port
Q-Channel 2nd LO Amplifier Supply Voltage. Bypass to GND with 33pF and 0.1μF
capacitors as close as possible to the pin.
Q-Channel 1st LO Amplifier Supply Voltage. Bypass to GND with 33pF and 0.1μF
capacitors as close as possible to the pin.
Exposed Ground Pad. The exposed pad MUST be soldered to the ground plane using
multiple vias.
Detailed Description
The MAX2021 is designed for upconverting differential
in-phase (I) and quadrature (Q) inputs from baseband
to a 650MHz to 1200MHz RF frequency range. The
device can also be used as a demodulator, downcon-
verting an RF input signal directly to baseband.
Applications include RFID handheld and portal readers,
as well as single and multicarrier GSM/EDGE,
cdma2000, WCDMA, and iDEN base stations. Direct
conversion architectures are advantageous since they
significantly reduce transmitter or receiver cost, part
count, and power consumption as compared to tradition-
al IF-based double conversion systems.
The MAX2021 integrates internal baluns, an LO buffer, a
phase splitter, two LO driver amplifiers, two matched
double-balanced passive mixers, and a wideband
quadrature combiner. The MAX2021’s high-linearity mix-
ers, in conjunction with the part’s precise in-phase and
quadrature channel matching, enable the device to pos-
sess excellent dynamic range, ACLR, 1dB compression
Maxim Integrated
point, and LO and sideband suppression characteris-
tics. These features make the MAX2021 ideal for four-
carrier WCDMA operation.
LO Input Balun, LO Buffer, and
Phase Splitter
The MAX2021 requires a single-ended LO input, with a
nominal power of 0dBm. An internal low-loss balun at
the LO input converts the single-ended LO signal to a
differential signal at the LO buffer input. In addition, the
internal balun matches the buffer’s input impedance to
50 ? over the entire band of operation.
The output of the LO buffer goes through a phase split-
ter, which generates a second LO signal that is shifted
by 90° with respect to the original. The 0° and 90° LO
signals drive the I and Q mixers, respectively.
LO Driver
Following the phase splitter, the 0° and 90° LO signals
are each amplified by a two-stage amplifier to drive the
I and Q mixers. The amplifier boosts the level of the LO
11
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
MAX2022ETX+T IC MOD 1500MHZ TO 2500MHZ 36TQFN
MAX2022EVKIT EVAL KIT FOR MAX2022
MAX2023ETX+T IC MOD/DEMOD HI DYN RNG 36-TQFN
MAX2027EUP+D IC AMP VAR GAIN 20-TSSOP
MAX2027EVKIT EVAL KIT FOR MAX2027
MAX2029ETP+T IC MIXER UP/DOWN HI LIN 20-TQFN
MAX2031EVKIT EVAL KIT FOR MAX2031
MAX2032ETP+ IC MIXER UP/DOWN CONVER 20TQFN
相关代理商/技术参数
MAX2021ETX-T 功能描述:调节器/解调器 0.75GHz-1.2GHz Quad Mod/Demod RoHS:否 制造商:Texas Instruments 封装 / 箱体:PVQFN-N24 封装:Reel
MAX2021EVKIT 功能描述:射频开发工具 RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V
MAX2022 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:High-Dynamic-Range, Direct Upconversion 1500MHz to 2500MHz Quadrature Modulator
MAX20-22.0C 制造商:MDE 制造商全称:MDE Semiconductor, Inc. 功能描述:HIGH CURRENT TRANSIENT VOLTAGE SUPPRESSOR (TVS) DIODE
MAX20-22.0CA 制造商:MDE 制造商全称:MDE Semiconductor, Inc. 功能描述:HIGH CURRENT TRANSIENT VOLTAGE SUPPRESSOR (TVS) DIODE
MAX2022_1 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Evaluation Kit
MAX2022_12 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:High-Dynamic-Range, Direct Up/ Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator
MAX2022ETX 功能描述:调节器/解调器 1.5GHz-2.5GHz Quad Mod/Demod RoHS:否 制造商:Texas Instruments 封装 / 箱体:PVQFN-N24 封装:Reel