參數(shù)資料
型號(hào)： 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(yè)數(shù)： 8/19頁(yè)
文件大?。?/td> 313K
代理商： MAX2112
M
Complete, Direct-Conversion
Tuner for DVB-S2 Applications
8
_______________________________________________________________________________________
Pin Description
PIN
NAME
DESCRIPTION
1
VCC_RF2
DC Power Supply for LNA. Connect to a +3.3V low-noise supply. Bypass to GND with a 1nF capacitor
connected as close as possib e to the pi n. D o not shar e capaci or gr ound vi as w th other g ound connections.
2
VCC_RF1
DC Power Supply for LNA. Connect to a +3.3V low-noise supply. Bypass to GND with a 1nF capacitor
connected as close as possib e to the pi n. D o not shar e capaci or gr ound vi as w th other g ound connections.
3
4
GND
RFIN
Ground. Connect to board’s ground plane for proper operation.
Wideband 75
Ω
RF Input. Connect to an RF source through a DC-blocking capacitor.
RF Gain-Control Input. High-impedance analog input with a 0.5V to 2.7V operating range.
V
GC1
= 0.5V corresponds to the maximum gain setting.
DC Power Supply for LO Generation Circuits. Connect to a +3.3V low-noise supply. Bypass to GND with
a 1nF capacitor connected as close as possible to the pin. Do not share capacitor ground vias with
other ground connections.
5
GC1
6
VCC_LO
7
VCC_VCO
DC Power Supply for VCO Circuits. Connect to a +3.3V low-noise supply. Bypass to GND with a 1nF
capacitor connected as close as possible to the pin. Do not share capacitor ground vias with other
ground connections.
Internal VCO Bias Bypass. Bypass to GND with a 100nF capacitor connected as close as possible to
the pin. Do not share capacitor ground vias with other ground connections.
High-Impedance VCO Tune Input. Connect the PLL loop filter output directly to this pin with as short of a
connection as possible.
Ground for VTUNE. Connect to the PCB ground plane.
Ground for Synthesizer. Connect to the PCB ground plane.
C h ar g e P um p O u p u C o n n e c t h s o u p u t o t he P L L l o o p fi e i n p u w h th e s h or e s c o n n e ct o n
p o ss b e
DC Power Supply for Synthesizer Circuits. Connect to a +3.3V low-noise supply. Bypass to GND with a
1nF capacitor connected as close as possible to the pin. Do not share capacitor ground vias with other
ground connections.
Crystal-Oscillator Interface. Use with an external parallel-resonance-mode crystal through a series 1nF
capacitor. See the
Typical Application Circuit
.
8
VCOBYP
9
VTUNE
10
11
GNDTUNE
GNDSYN
12
CPOUT
13
VCC_SYN
14
XTAL
15
REFOUT
Crystal-Oscillator Buffer Output. A DC-blocking capacitor must be used when driving external circuitry.
16
VCC_DIG
DC Power Supply for Digital Logic Circuits. Connect to a +3.3V low-noise supply. Bypass to GND with a
1nF capacitor connected as close as possible to the pin. Do not share capacitor ground vias with other
ground connections.
17
18
19
20
21
22
23
24
QOUT+
QOUT-
IOUT+
IOUT-
IDC+
IDC-
QDC+
QDC-
Quadrature Baseband Differential Output. AC-couple with 47nF capacitors to the demodulator input.
In-Phase Baseband Differential Output. AC-couple with 47nF capacitors to the demodulator input.
I-Channel Baseband DC Offset Correction. Connect a 47nF ceramic chip capacitor from IDC- to IDC+.
Q- C hannel Baseb and D C O fset C or ecti on. C onnect a 47nF cer am c chi p cap aci or fr om QD C to QD C +
25
VCC_BB
DC Power Supply for Baseband Circuits. Connect to a +3.3V low-noise supply. Bypass to GND with
a 1nF capacitor connected as close as possible to the pin. Do not share capacitor ground vias with
other ground connections.
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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(chēng):Maxim Integrated Products 功能描述:Complete, Direct-Conversion Tuner for DVB-S2 Applications
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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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