MAX2117 データシートの表示（PDF） - Maxim Integrated
部品番号
コンポーネント説明
メーカー
MAX2117 Datasheet PDF : 20 Pages
| |||
Complete, Direct-Conversion Tuner for
MMDS Applications
Typical Operating Characteristics (continued)
(MAX2117 Evaluation Kit: VCC = +3.3V, baseband output frequency = 5MHz; VGC1 = 1.2V; TA = +25°C. Default register settings
except BBG[3:0] = 1011.)
PHASE NOISE vs. OFFSET FREQUENCY
-70
fLO = 1000MHz
-80
-90
-100
-110
-120
-130
0.1
1
10
100
1000
OFFSET FREQUENCY (kHz)
LO LEAKAGE vs. LO FREQUENCY
-80
MEASURED AT RF INPUT
-85
-90
-95
-100
450
550 650 750 850 950 1050
LO FREQUENCY (MHz)
Pin Description
PIN
NAME
FUNCTION
DC Power Supply for LNA. Connect to a +3.3V low-noise supply. Bypass to GND with a 1nF capacitor
1
VCC_RF2 connected as close as possible to the pin. Do not share capacitor ground vias with other ground
connections.
DC Power Supply for LNA. Connect to a +3.3V low-noise supply. Bypass to GND with a 1nF capacitor
2
VCC_RF1 connected as close as possible to the pin. Do not share capacitor ground vias with other ground
connections.
3
GND
Ground. Connect to the board’s ground plane for proper operation.
4
RFIN
Wideband 75Ω RF Input. Connect to an RF source through a DC-blocking capacitor.
5
GC1
RF Gain-Control Input. High-impedance analog input, with a 0.5V to 2.7V operating range. VGC1 =
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
6
VCC_LO with a 1nF capacitor connected as close as possible to the pin. Do not share capacitor ground vias
with other ground connections.
DC Power Supply for VCO Circuits. Connect to a +3.3V low-noise supply. Bypass to GND with a 1nF
7
VCC_VCO capacitor connected as close as possible to the pin. Do not share capacitor ground vias with other
ground connections.
8
VCOBYP
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.
9
VTUNE High-Impedance VCO Tune Input. Connect the PLL loop filter output directly to this pin with as short
of a connection as possible.
10
GNDTUNE Ground for VTUNE. Connect to the PCB ground plane.
11
GNDSYN Ground for Synthesizer. Connect to the PCB ground plane.
12
CPOUT
Charge-Pump Output. Connect this output to the PLL loop filter input with the shortest connection
possible.
8 _______________________________________________________________________________________
Share Link: 