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參數(shù)資料
| 型號： | MAX2112 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Complete, Direct-Conversion Tuner for DVB-S2 Applications |
| 中文描述： | 完備的直接變頻調(diào)諧器，用于DVB-S2系統(tǒng) |
| 文件頁數(shù)： | 1/19頁 |
| 文件大小： | 313K |
| 代理商： | MAX2112 |
General Description
The MAX2112 low-cost, direct-conversion tuner IC is
designed for satellite set-top and VSAT applications.
The IC is intended for 8PSK and Digital Video
Broadcast (DVB-S2) applications.
The MAX2112 directly converts the satellite signals
from the LNB to baseband using a broadband I/Q
downconverter. 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 baseband
lowpass filters with programmable cutoff frequency control
and digitally controlled baseband variable-gain amplifiers.
Together, the RF and baseband variable-gain amplifiers
provide more than 80dB of gain control range. The IC is
compatible with virtually all DVB-S2 demodulators.
The MAX2112 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
and demodulators. Synthesizer programming and device
configuration are accomplished with a 2-wire serial inter-
face. The IC features a VCO autoselect (VAS) function
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.
The MAX2112 is the most advanced DBS tuner avail-
able today. The low noise figure eliminates the need for
an external LNA. A small number of passive compo-
nents are needed to form a complete DVB-S2 RF front-
end solution. The tuner is available in a very small
28-pin thin QFN package.
Applications
DirecTV and Dish Network DBS
DVB-S2
VSATs
Features
925MHz to 2175MHz Frequency Range
Monolithic VCO
Low Phase Noise: -97dBc/Hz at 10kHz
No Calibration Required
High Dynamic Range: -75dBm to 0dBm
Integrated Variable BW LP Filters: 4MHz to 40MHz
Single +3.3V ±5% Supply
Low-Power Standby Mode
Multiple 2-Wire Addresses for Multituner
Applications
Differential I/Q Interface
I
2
C 2-Wire Serial Interface
Very Small 28-Pin TQFN Package
M
Complete, Direct-Conversion
Tuner for DVB-S2 Applications
________________________________________________________________ Maxim Integrated Products
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
V
G
C
V
X
V
S
V
Q
A
Q
I
RFIN
GC1
VCC_LO
+
IOUT+
QOUT-
VCC_DIG
G
S
19
17
16
3
5
18
4
6
VCC_VCO
REFOUT
15
7
GND
IOUT-
20
2
VCC_RF1
21
IDC+
1
26
24
23
10
12
25
11
13
22
14
27
9
28
8
VCC_RF2
MAX2112
INTERFACE LOGIC
AND CONTROL
DC OFFSET
CORRECTION
LPF BW
CONTROL
DIV2/DIV4
EP
FREQUENCY
SYNTHESIZER
QOUT+
Pin Configuration/
Functional Diagram
Ordering Information
19-0869; Rev 0; 8/07
*EP = Exposed paddle.
+Denotes a lead-free package.
PART
TEMP RANGE
PIN-PACKAGE
PKG
CODE
MAX2112CTI+
MAX2112ETI+
0°C to +70°C
-40°C to +85°C 28 Thin QFN-EP*
28 Thin QFN-EP*
T2855+3
T2855+3
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX2116EVKIT | MAX2116/MAX2118 Evaluation Kits |
| MAX2116 | 16-Bit Buffers/Drivers With 3-State Outputs 48-SSOP -40 to 85 |
| MAX2116UTL | Complete DBS Direct-Conversion Tuner ICs with Monolithic VCOs |
| MAX2118EVKIT | MAX2116 Evaluation Kits |
| MAX2118UTL | Complete DBS Direct-Conversion Tuner ICs with Monolithic VCOs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX2112_10 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Complete, Direct-Conversion Tuner for DVB-S2 Applications |
| MAX2112CTI+ | 功能描述:調(diào)諧器 Direct Conv Tuner Tuner for DVB-S2 RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數(shù): 工作電源電壓: 最小工作溫度: 最大工作溫度: |
| MAX2112CTI+T | 功能描述:調(diào)諧器 Direct Conv Tuner Tuner for DVB-S2 RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數(shù): 工作電源電壓: 最小工作溫度: 最大工作溫度: |
| MAX2112ETI/GG8 | 制造商:Maxim Integrated Products 功能描述:COMPLETE, DIRECT-CONVERSION TUNER FOR DVB-S2 APPLICATIONS - Rail/Tube |
| MAX2112ETI+ | 功能描述:調(diào)諧器 Direct Conv Tuner Tuner for DVB-S2 RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數(shù): 工作電源電壓: 最小工作溫度: 最大工作溫度: |
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