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參數資料
| 型號： | MAX2104 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 16-Bit Buffers/Drivers With 3-State Outputs 48-TSSOP -40 to 85 |
| 中文描述： | 直接變頻調諧器IC，適合數字DBS應用 |
| 文件頁數： | 1/9頁 |
| 文件大小： | 148K |
| 代理商： | MAX2104 |
General Description
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.
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.
Applications
DirecTV, PrimeStar, EchoStar DBS Tuners
DVB-Compliant DBS Tuners
Broadband Systems
LMDS
Features
o
Low-Cost Architecture
o
Operates from Single 5V Supply
o
925MHz to 2175MHz Input Frequency Range
o
On-Chip Quadrature Generator, Dual-Modulus
Prescaler (/32, /33)
o
On-Chip Crystal Amplifier
o
PLL Mixer with Gain-Controlled Charge Pump
o
Input Levels: -25dBm to -65dBm per Carrier
o
Over 40dB Gain Control Range
o
Noise Figure = 11.5dB; IIP3 = 7dBm (at 1550MHz)
o
Automatic Baseband Offset Correction
o
Loopthrough Replaces External Splitter
o
Crystal Output Buffer
M
Direct-Conversion Tuner IC for
Digital DBS Applications
________________________________________________________________
Maxim Integrated Products
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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PLLIN-
PLLIN+
MOD-
MOD+
GND
IOUT+
IOUT-
V
CC
QOUT+
QOUT-
FDOUB
FLCLK
V
CC
CFLT
XTL-
XTL+
GND
V
CC
RFIN-
RFIN+
GND
GND
QDC-
QDC+
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TQFP
MAX2104
TOP VIEW
PART
MAX2104CCM*
*
Contact factory for availability.
0°C to +70°C
TEMP RANGE
PIN-PACKAGE
48 TQFP-EP
19-1431; Rev 3; 12/01
Functional Diagram appears at end of data sheet.
Pin Configuration
Ordering Information
相關PDF資料 |
PDF描述 |
|---|---|
| MAX2104CCM | PLASTIC ENCAPSULATED DEVICES |
| MAX2106 | 16-Bit Buffers/Drivers With 3-State Outputs 48-TVSOP -40 to 85 |
| MAX2106UCM | DBS Direct Downconverter |
| MAX2108CEG | Direct-Conversion Tuner IC |
| MAX2108 | 16-Bit Buffers/Drivers With 3-State Outputs 48-SSOP -40 to 85 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX2104_05 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Direct-Conversion Tuner IC for Digital DBS Applications |
| MAX2104CCM | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX2104CCM+ | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Direct-Conversion Tuner IC for Digital DBS Applications |
| MAX2104CCM+D | 功能描述:調諧器 RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數: 工作電源電壓: 最小工作溫度: 最大工作溫度: |
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