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MAX2104

更新时间： 2024-02-05 02:21:40
品牌 Logo 应用领域
美信 - MAXIM /
页数 文件大小 规格书
9页 149K
描述
Direct-Conversion Tuner IC for Digital DBS Applications

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MAX2104 技术参数

是否无铅：含铅是否Rohs认证：不符合
生命周期：Obsolete包装说明：7 X 7 MM, 1 MM HEIGHT, MS-026ABA-HD, TQFP-48
Reach Compliance Code：not_compliantECCN代码：5A991
HTS代码：8542.39.00.01风险等级：5.76
Is Samacsys：N特性阻抗：50 Ω
构造：COMPONENT输入功率最小值（CW）：-25 dBm
JESD-609代码：e0LO 可调谐：YES
最高工作温度：70 °C最低工作温度：
最大射频输入频率：2175 MHz最小射频输入频率：925 MHz
射频/微波设备类型：DOWN CONVERTER端子面层：Tin/Lead (Sn85Pb15)
Base Number Matches：1

MAX2104 数据手册

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19-1431; Rev 3; 12/01  
Direct-Conversion Tuner IC for  
Digital DBS Applications  
General Description  
Features  
The MAX2104 low-cost direct-conversion tuner IC is  
designed for use in digital direct-broadcast satellite  
(DBS) television set-top box units. Its direct-conversion  
architecture reduces system cost compared to devices  
with IF-based architectures. The MAX2104 directly con-  
verts L-band signals to baseband signals using a  
broadband I/Q downconverter. The operating frequency  
range extends from 925MHz to 2175MHz.  
ꢀ Low-Cost Architecture  
ꢀ Operates from Single 5V Supply  
ꢀ 925MHz to 2175MHz Input Frequency Range  
ꢀ On-Chip Quadrature Generator, Dual-Modulus  
Prescaler (/32, /33)  
ꢀ On-Chip Crystal Amplifier  
The IC includes an LNA gain control, I and Q downcon-  
verting mixers, lowpass filters with gain control and fre-  
quency control, a local oscillator (LO) buffer with a 90°  
quadrature network, and a charge-pump based PLL for  
frequency control. The MAX2104 also has an on-chip  
LO, requiring only an external varactor-tuned LC tank  
for operation. The output of the LO drives the internal  
quadrature generator and dual modulus prescaler. An  
on-chip crystal amplifier drives a reference divider as  
well as a buffer amplifier to drive off-chip circuitry. The  
MAX2104 is offered in a 48-pin TQFP-EP package.  
ꢀ PLL Mixer with Gain-Controlled Charge Pump  
ꢀ Input Levels: -25dBm to -65dBm per Carrier  
ꢀ Over 40dB Gain Control Range  
ꢀ Noise Figure = 11.5dB; IIP3 = 7dBm (at 1550MHz)  
ꢀ Automatic Baseband Offset Correction  
ꢀ Loopthrough Replaces External Splitter  
ꢀ Crystal Output Buffer  
Applications  
DirecTV, PrimeStar, EchoStar DBS Tuners  
DVB-Compliant DBS Tuners  
Broadband Systems  
Ordering Information  
PART  
TEMP RANGE  
PIN-PACKAGE  
MAX2104CCM*  
0°C to +70°C  
48 TQFP-EP  
*Contact factory for availability.  
LMDS  
Functional Diagram appears at end of data sheet.  
Pin Configuration  
TOP VIEW  
V
1
2
3
4
5
6
7
8
9
36 PLLIN-  
35 PLLIN+  
34 MOD-  
33 MOD+  
32 GND  
CC  
CFLT  
XTL-  
XTL+  
GND  
V
31 IOUT+  
30 IOUT-  
CC  
MAX2104  
RFIN-  
RFIN+  
GND  
29  
V
CC  
28 QOUT+  
27 QOUT-  
26 FDOUB  
25 FLCLK  
GND 10  
QDC- 11  
QDC+ 12  
TQFP  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
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