MAX2045 Datasheet, PDF (1/21 Pages) Maxim Integrated Products – High-Gain Vector Multipliers

19-2728; Rev 0; 1/03
High-Gain Vector Multipliers
General Description
The MAX2045/MAX2046/MAX2047 low-cost, fully inte-
grated vector multipliers alter the magnitude and phase
of an RF signal. Each device is optimized for the UMTS
(MAX2045), DCS/PCS (MAX2046), or cellular/GSM
(MAX2047) frequency bands. These devices feature
differential RF inputs and outputs.
The MAX2045/MAX2046/MAX2047 provide vector
adjustment through the differential I/Q amplifiers. The
I/Q amplifiers can interface with voltage and/or current
digital-to-analog converters (DACs). The voltage inputs
are designed to interface to a voltage-mode DAC, while
the current inputs are designed to interface to a current-
mode DAC. An internal 2.5V reference voltage is provid-
ed for applications using single-ended voltage DACs.
The MAX2045/MAX2046/MAX2047 operate from a 4.75V
to 5.25V single supply. All devices are offered in a com-
pact 5mm ✕ 5mm, 32-lead thin QFN exposed-paddle
packages.
The MAX2045/MAX2046/MAX2047 evaluation kits are
available, contact factory for availability.
Features
o Multiple RF Frequency Bands of Operation
2040MHz to 2240MHz (MAX2045)
1740MHz to 2060MHz (MAX2046)
790MHz to 1005MHz (MAX2047)
o ±0.2dB Gain Flatness
o ±1° Phase Flatness
o 3dB Control Bandwidth: 260MHz
o 15dBm Input IP3
o 15dB Gain Control Range
o Continuous 360° Phase Control Range
o 6.5dB Maximum Gain for Continuous Phase
o On-Chip Reference for Single-Ended
Voltage-Mode Operation
o 800mW Power Consumption
o Space-Saving 5mm x 5mm Thin QFN Package
o Single 5V supply
Applications
UMTS/PCS/DCS/Cellular/GSM Base Station
Feed-Forward and Predistortion Power Amplifiers
RF Magnitude and Phase Adjustment
RF Cancellation Loops
Beam-Forming Applications
Ordering Information
PART
TEMP RANGE
MAX2045ETJ-T
-40°C to +85°C
MAX2046ETJ-T
-40°C to +85°C
MAX2047ETJ-T
-40°C to +85°C
*EP = Exposed paddle.
PIN-PACKAGE
32 Thin QFN-EP*
32 Thin QFN-EP*
32 Thin QFN-EP*
Pin Configuration/Block Diagram
VI1 1
VI2 2
VQ1 3
VQ2 4
II1 5
II2 6
IQ1 7
IQ2 8
CONTROL
AMPLIFIER I
MAX2045
MAX2046
MAX2047
CONTROL
AMPLIFIER Q
2 5V
REFERENCE
90°
PHASE
SHIFTER
VECTOR
MULTIPLIER
OUTPUT
STAGE
24 GND
23 GND
22 RBIAS
21 GND
20 GND
19 GND
18 V_CC
17 V_CC
QFN
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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.