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| 型号： | MAX2121ETI+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 1/19页 |
| 文件大小： | 0K |
| 描述： | IC RF L-BAND TUNER 28TQFN |
| 标准包装： | 2,500 |
| 功能： | 调谐器 |
| 频率： | 925MHz ~ 2.175GHz |
| RF 型： | L 频带 |
| 次要属性： | 直接转换 |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
ATION
EVALU
AVAIL
19-5959; Rev 1; 7/12
KIT
ABLE
Complete Direct-Conversion L-Band Tuner
General Description
The MAX2121 low-cost, direct-conversion tuner IC is
designed for satellite set-top and VSAT applications.
The device directly converts the satellite signals from
the LNB to baseband using a broadband I/Q downcon-
verter. The operating frequency range extends from
925MHz to 2175MHz.
The device includes an LNA and an RF variable-gain
amplifier, I and Q downconverting mixers, and base-
band lowpass filters and digitally controlled baseband
variable-gain amplifiers. Together, the RF and base-
band variable-gain amplifiers provide more than 80dB
of gain control range.
The device includes fully monolithic VCOs, as well as a
complete fractional-N frequency synthesizer.
Additionally, an on-chip crystal oscillator is provided
along with a buffered output for driving additional tuners
Features
o 925MHz to 2175MHz Frequency Range
o Monolithic VCO
Low Phase Noise: -97dBc/Hz at 10kHz
No Calibration Required
o High Dynamic Range: -75dBm to 0dBm
o Integrated LP Filters: 123.75MHz
o Single +3.3V ±5% Supply
o Low-Power Standby Mode
o Address Pin for Multituner Applications
o Differential I/Q Interface
o I 2 C 2-Wire Serial Interface
o Very Small, 5mm x 5mm, 28-Pin TQFN Package
Ordering Information
and demodulators. Synthesizer programming and device
configuration are accomplished with a 2-wire serial inter-
face. The IC features a VCO autoselect (VAS) function
PART
MAX2121ETI+
TEMP RANGE
-40°C to +85°C
PIN-PACKAGE
28 TQFN-EP*
that automatically selects the proper VCO. For multituner
applications, the device can be configured to have one
of two 2-wire interface addresses. A low-power standby
mode is available whereupon the signal path is shut
down while leaving the reference oscillator, digital inter-
face, and buffer circuits active, providing a method to
reduce power in single and multituner applications.
*EP = Exposed pad.
+Denotes a lead(Pb)-free/RoHS-compliant package.
Functional Diagram
The device is the most advanced broadband/VSAT
+
28
27
26
25
24
23
22
DBS tuner available. The low noise figure eliminates the
need for an external LNA. A small number of passive
components are needed to form a complete broadband
satellite tuner DVB-S2 RF front-end solution. The tuner
V CC_RF2
V CC_RF1
1
2
INTERFACE LOGIC
AND CONTROL
MAX2121
DC OFFSET
CORRECTION
21
20
IDC+
IOUT-
is available in a very small, 5mm x 5mm, 28-pin thin
QFN package.
Applications
VSATs
GND
RFIN
GC1
3
4
5
19
18
17
IOUT+
QOUT-
QOUT+
V CC_LO
6
EP
DIV2/DIV4
FREQUENCY
SYNTHESIZER
16
V CC_DIG
V CC_VCO
7
15
REFOUT
8
9
10
11
12
13
14
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX2121EVKIT# | 功能描述:射频开发工具 MAX2121 Eval Kit 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 |
| MAX212C/D | 功能描述:RS-232接口集成电路 +3V Powered Low-Power True RS-232 Transceiver RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| MAX212CAG | 功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| MAX212CAG+ | 功能描述:RS-232接口集成电路 3V True RS-232 Transceiver RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| MAX212CAG+T | 功能描述:RS-232接口集成电路 3V True RS-232 Transceiver RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
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