MAX2335ETI+T

General Description
The MAX2335 RF front-end receiver IC is designed for
CDMA and OFDM applications in the 450MHz band.
The MAX2335 includes a low-noise amplifier (LNA) with
adjustable IIP3 to minimize desensitization due to cross-
modulation in the presence of a large interfering signal.
The mixer features differential IF outputs and is
designed for high linearity and low noise, which is well
suited for CDMA and OFDM applications.
An on-chip frequency divider is included to allow the
use of a standard 1GHz VCO. Alternatively, the divider
can be bypassed for use with a lower-frequency VCO.
The MAX2335 is available in a 28-pin TQFN package
with exposed paddle and is specified for the -40°C to
+85°C extended temperature range. The device is also
offered in a lead-free package.
Features
1.5dB LNA Noise Figure
16dB LNA Gain
2.1dB Cascaded Noise Figure
Adjustable LNA IIP3
LO Output Buffer for Transmitter
LO Frequency Divider
Small 5mm x 5mm, 28-Pin (Lead-Free) TQFN
Package
MAX2335
450MHz CDMA/OFDM LNA/Mixer
________________________________________________________________ Maxim Integrated Products 1
MAX2335
TOP VIEW
÷2
THIN QFN
5mm x 5mm
26
27
25
24
10
9
11
R
LNA
LNAIN
MODEO
MODE1
MODE2
12
DEGEN
IF_CDMA+
N.C.
BUFFEN
EP
R
BIAS
V
CC
V
CC
12
N.C.
4567
2021 19 17 16 15
V
CC
N.C.
I.C.
N.C.
LO_IN
LO/2
GND
IF_CDMA-
3
18
28
8
LNAOUT
N.C.
N.C.
23
13
LO_OUT
I.C.
22
14
N.C.
MIXIN
+
Pin Configuration/
Functional Diagram
Ordering Information
19-0492; Rev 0; 10/05
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.
*EP = Exposed paddle.
+Denotes lead-free package.
EVALUATION KIT
AVAILABLE
PART
TEMP RANGE
PIN-PACKAGE
PKG
CODE
MAX2335ETI
-40°C to +85°C
28 Thin QFN-EP*
(5mm x 5mm)
T2855-3
MAX2335ETI+
-40°C to +85°C
28 Thin QFN-EP*
(5mm x 5mm)
T2855+3
Applications
450MHz-Band, WCDMA, IS-95, IS-2000, OFDM,
Wireless Data Links
MAX2335
450MHz CDMA/OFDM LNA/Mixer
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(V
CC
= +2.9V to +3.3V, R
BIAS
= 18k, R
LNA
= 24k, BUFFEN = LOW, LO/2 = HIGH, T
A
= -40°C to +85°C, unless otherwise noted.
Typical values are at V
CC
= +2.9V, LOW = 0V, HIGH = +3.0V, T
A
= +25°C, unless otherwise noted.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V
CC
to GND...........................................................-0.3V to +4.3V
All Other Pins to GND.................................-0.3V to (V
CC
+ 0.3V)
AC Input Pins (LNAIN, LO_IN, MIXIN) to GND ...............1V Peak
Continuous Power Dissipation (T
A
= +70°C)
28-Pin Thin QFN (derate 34.5mW/°C above +70°C) ...........2.7W
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
CAUTION! ESD SENSITIVE DEVICE
SYMBOL
MIN TYP MAX
UNITS
Digital Input Current (Logic-High)
Digital Input Current (Logic-Low)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
OVERALL PERFORMANCE
RF Frequency Range f
RF
420 to 470 MHz
LO Frequency Range f
LO
After optional LO/2 500 to 660 MHz
IF Frequency Range f
IF
80 to 190 MHz
LO Input Power (Note 2) -7 -3 0 dBm
LO Buffer Output Power BUFFEN = HIGH -10 -6 dBm
Return Loss
All modes, all active ports, including
2-element matching network, if necessary
10 dB
CASCADED PERFORMANCE
HIGH-GAIN, HIGH-LINEARITY MODE (MODE[2:0] = 111)
Gain G (Note 1) 23.0 27 31.5 dB
Noise Figure NF Incl ud i ng off- chi p m atchi ng , T
A
= + 25°C ( N ote 2) 2.2 2.6 dB
Input Third-Order Intercept Point IIP3 T
A
= + 25°C (Notes 1, 3) -14 -11.5 dBm
AC ELECTRICAL CHARACTERISTICS
(MAX2335 EV Kit, V
CC
= +2.9V to +3.3V, f
LNAIN
= f
MIXIN
= 465MHz, f
IF
= 110MHz, f
LO
= 2 x (f
MIXIN
+ f
IF
), 50 system impedance,
R
BIAS
= 18k, R
LNA
= 24k, cascaded performance includes 2dB interstage filter loss, T
A
= -40°C to +85°C, unless otherwise
noted. Typical values are at V
CC
= +2.9V, P
LO_IN
= -7dBm, LOW = 0V, HIGH = +3.0V, T
A
= +25°C, unless otherwise noted.)
MAX2335
450MHz CDMA/OFDM LNA/Mixer
_______________________________________________________________________________________ 3
Note 1: Specifications at T
A
= +25°C and +85°C are guaranteed by production test. Specifications at T
A
= -40°C are guaranteed
by design and characterization.
Note 2: Guaranteed by design and characterization.
Note 3: Two-tone IIP3 tested at f
RF1
= 465.9MHz and f
RF2
= 466.7MHz at -25dBm/tone.
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2335 EV Kit, V
CC
= +2.9V to +3.3V, f
LNAIN
= f
MIXIN
= 465MHz, f
IF
= 110MHz, f
LO
= 2 x (f
MIXIN
+ f
IF
), 50 system impedance,
R
BIAS
= 18k, R
LNA
= 24k, cascaded performance includes 2dB interstage filter loss, T
A
= -40°C to +85°C, unless otherwise
noted. Typical values are at V
CC
= +2.9V, P
LO_IN
= -7dBm, LOW = 0V, HIGH = +3.0V, T
A
= +25°C, unless otherwise noted.)
SYMBOL
MIN
MAX
UNITS
21.0
30.5
Incl ud i ng off- chi p m atchi ng , T
A
= + 25°C ( N ote 2)
2.5
Input Third-Order Intercept Point
-15
dBm
14
Incl ud i ng off- chi p m atchi ng , T
A
= + 25°C ( N ote 2)
15
Input Third-Order Intercept Point
dBm
NF
LNA
Input Third-Order Intercept Point
IIP3
LNA
dBm
Input Third-Order Intercept Point
dBm
NF
LNA
Input Third-Order Intercept Point
IIP3
LNA
dBm
G
MIXER
NF
MIXER
Input Third-Order Intercept Point
IIP3
MIXER
dBm
G
MIXER
NF
MIXER
Input Third-Order Intercept Point
IIP3
MIXER
dBm
G
MIXER
NF
MIXER
Input Third-Order Intercept Point
IIP3
MIXER
dBm

MAX2335ETI+T

Mfr. #:
Manufacturer:
Maxim Integrated
Description:
RF Front End 450MHz CDMA/OFDM LNA/Mixe
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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