max2452ise+t Maxim Integrated Products, Inc., max2452ise+t Datasheet
max2452ise+t
Manufacturer Part Number
max2452ise+t
Description
3v, Ultra-low-power Quadrature Modulator
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.MAX2452ISET.pdf
(7 pages)
The monolithic MAX2452 is a quadrature modulator
with supporting oscillator and divide-by-8 prescaler. It
operates from a single +3V supply and draws only
4.1mA. The modulator accepts differential I and Q
baseband signals with amplitudes up to 1.35Vp-p and
bandwidths up to 15MHz. It produces a differential out-
put up to 80MHz.
Pulling the CMOS-compatible ENABLE pin low reduces
the supply current to 2µA. To minimize spurious feed-
back, the MAX2452’s internal oscillator is set at twice
the IF via external tuning components. The oscillator
and associated phase shifters produce differential sig-
nals exhibiting low amplitude and phase imbalance,
yielding 42dB sideband rejection. The MAX2452 comes
in a 16-pin narrow SO package.
19-0425; Rev 2; 3/07
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.
TOP VIEW
Digital Cordless Phones
GSM and North American Cellular Phones
Wireless LANs
Digital Communications
Two-Way Pagers
ENABLE
TANK
GND
IF
Q
Q
________________________________________________________________ Maxim Integrated Products
I
I
1
2
3
4
5
6
7
8
General Description
MAX2452
SO
Pin Configuration
Applications
16
15
14
13
12
11
10
9
IF
GND
V
N.C.
PRE_OUT
LO_V
LO_GND
TANK
CC
CC
♦ IF Output Frequency up to 80MHz
♦ Input Bandwidth up to 15MHz
♦ On-Chip Oscillator with External Tuning Circuit
♦ On-Chip Divide-by-8 Prescaler
♦ Integrated Quadrature Phase Shifters
♦ Self-Biased Differential Baseband Inputs
♦ CMOS-Compatible Enable
♦ 4.1mA Operating Supply Current
________________Functional Diagram
LO_GND
______________Ordering Information
MAX2452ISE
LO_V
Quadrature Modulator
2µA Shutdown Supply Current
TANK
TANK
V
CC
CC
PART
Q
Q
I
I
3V, Ultra-Low-Power
11
10
14
8
9
3
4
5
6
OSCILLATOR
BANDGAP
GND
2, 15
LOCAL
-20°C to +85°C
TEMP. RANGE
MASTER BIAS
QUADRATURE
GENERATOR
÷2
÷2
ENABLE
MODULATOR
BIAS
PHASE
0°
90°
7
PRESCALER
MAX2452
16 Narrow SO
PIN-PACKAGE
÷4
Σ
Features
12
16
1
PRE_OUT
IF
IF
1
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