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參數(shù)資料
| 型號： | MAX2022 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | High-Dynamic-Range, Direct Upconversion 1500MHz to 2500MHz Quadrature Modulator |
| 中文描述： | 高動態(tài)范圍、直接變換，提供1500MHz至2500MHz正交調(diào)制器 |
| 文件頁數(shù)： | 9/14頁 |
| 文件大?。?/td> | 293K |
| 代理商： | MAX2022 |
High-Dynamic-Range, Direct Upconversion
1500MHz to 2500MHz Quadrature Modulator
_______________________________________________________________________________________
9
M
Detailed Description
The MAX2022 is designed for upconverting differential
in-phase (I) and quadrature (Q) inputs from baseband to
a 1500MHz to 2500MHz RF frequency range.
Applications include single and multicarrier 1800MHz to
2200MHz UMTS/WCDMA, cdma2000, and DCS/PCS
base stations. Direct upconversion architectures are
advantageous since they significantly reduce transmitter
cost, part count, and power consumption as compared
to traditional IF-based double upconversion systems.
The MAX2022 integrates internal baluns, an LO buffer, a
phase splitter, two LO driver amplifiers, two matched
double-balanced passive mixers, and a wideband
quadrature combiner. Precision matching between the
in-phase and quadrature channels, and highly linear
mixers achieves excellent dynamic range, ACLR, 1dB
compression point, and LO and sideband suppression,
making it ideal for four-carrier WCDMA/UMTS operation.
LO Input Balun, LO Buffer, and
Phase Splitter
The MAX2022 requires a single-ended LO input, with a
nominal power of 0dBm. An internal low-loss balun at
the LO input converts the single-ended LO signal to a
differential signal at the LO buffer input. In addition, the
internal balun matches the buffer
’
s input impedance to
50
over the entire band of operation.
The output of the LO buffer goes through a phase split-
ter, which generates a second LO signal that is shifted
by 90
°
with respect to the original. The 0
°
and 90
°
LO
signals drive the I and Q mixers, respectively.
LO Driver
Following the phase splitter, the 0
°
and 90
°
LO signals
are each amplified by a two-stage amplifier to drive the
I and Q mixers. The amplifier boosts the level of the LO
signals to compensate for any changes in LO drive lev-
els. The two-stage LO amplifier allows a wide input
power range for the LO drive. While a nominal LO
power of 0dBm is specified, the MAX2022 can tolerate
LO level swings from -3dBm to +3dBm.
I/Q Modulator
The MAX2022 modulator is composed of a pair of
matched double-balanced passive mixers and a balun.
The I and Q differential baseband inputs accept signals
from DC to beyond 100MHz with differential amplitudes
Pin Description
PIN
NAME
FUNCTION
1, 5, 9
–
12, 14,
16
–
19, 22, 24,
27
–
30, 32, 34,
35, 36
2
3
4
6
7
8
13
15
20
21
23
25
26
31
33
GND
Ground
RBIASLO3
VCCLOA
LO
RBIASLO1
COMP
RBIASLO2
VCCLOI1
VCCLOI2
BBIP
BBIN
RFOUT
BBQN
BBQP
VCCLOQ2
VCCLOQ1
3rd LO Amplifier Bias. Connect a 301
resistor to ground.
LO Input Buffer Amplifier Supply Voltage
Local Oscillator Input. 50
input impedance.
1st LO Input Buffer Amplifier Bias. Connect a 432
resistor to ground.
Compensation Capacitor Input. Connect a 22pF capacitor to ground.
2nd LO Amplifier Bias. Connect a 562
resistor to ground.
I-Channel 1st LO Amplifier Supply Voltage
I-Channel 2nd LO Amplifier Supply Voltage
Baseband In-Phase Positive Input
Baseband In-Phase Negative Input
RF Output
Baseband Quadrature Negative Input
Baseband Quadrature Positive Input
Q-Channel 1st LO Amplifier Supply Voltage
Q-Channel 2nd LO Amplifier Supply Voltage
EP
GND
Exposed Ground Paddle. The exposed paddle
MUST
be soldered to the ground plane using
multiple vias.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX20-22.0C | 制造商:MDE 制造商全稱:MDE Semiconductor, Inc. 功能描述:HIGH CURRENT TRANSIENT VOLTAGE SUPPRESSOR (TVS) DIODE |
| MAX20-22.0CA | 制造商:MDE 制造商全稱:MDE Semiconductor, Inc. 功能描述:HIGH CURRENT TRANSIENT VOLTAGE SUPPRESSOR (TVS) DIODE |
| MAX2022_1 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Evaluation Kit |
| MAX2022_12 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:High-Dynamic-Range, Direct Up/ Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator |
| MAX2022ETX | 功能描述:調(diào)節(jié)器/解調(diào)器 1.5GHz-2.5GHz Quad Mod/Demod RoHS:否 制造商:Texas Instruments 封裝 / 箱體:PVQFN-N24 封裝:Reel |
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