General Description
The MAX2387/MAX2388/MAX2389 low-noise amplifier
(LNA), downconverter mixers designed for W-CDMA
applications, are ideal for ARIB (Japan) and ETSI-
UMTS (Europe) based systems. The MAX2387/
MAX2388/MAX2389 feature ultra-low current consump-
tion and exceptionally low noise figures in ultra-small
packages.
The MAX2387/MAX2388 include an LNA, a downcon-
verter mixer, and a local-oscillator (LO) buffer. The
MAX2389 has an LNA and mixer, but minimizes current
consumption by omitting the LO buffer. For all devices,
the LNA and downconverter mixers are optimized for
the 2110MHz to 2170MHz band. All devices feature a
high-gain mode and a low-gain mode of LNA operation.
The MAX2387 has a 32dB gain step, and the
MAX2388/MAX2389 have an 18dB gain step. All ICs
include a shutdown mode, powering down the IC dur-
ing the front-end receiver's idle periods.
The mixer 3rd-order nonlinearity performance is set
using an external biasing resistor. For the MAX2387/
MAX2388, mixer performance is optimized for a
-10dBm typical drive at the LO buffer input port. The
MAX2389 mixer performance is optimized for a
-4dBm typical drive at the LO input port. The LO port
for all versions is configurable for either single-ended or
differential operation.
These devices operate from a +2.7V to +3.3V single sup-
ply and are available in ultra-small (3mm
3mm) 12-pin
leadless packages (QFN).
________________________Applications
Japanese 3rd-Generation W-CDMA Cellular
Phones
Dual-Mode W-CDMA/GSM Cellular Phones
Features
o Ultra-Low Current Consumption: 10.7mA
(MAX2387), 9.9mA (MAX2388), and 7.9mA
(MAX2389)
o +2.7V to +3.3V Single-Supply Operation
o Mixer NF: 7dB SSB
o Cascaded Noise Figure: 2.3dB
o LNA Low-Gain Mode: 32dB Gain Step (MAX2387)
or 18dB Gain Step (MAX2388/MAX2389)
o Mixer IIP3: 6dBm
o < 1µA Shutdown Current
o Ultra-Small (3mm
3mm) 12-Pin QFN Package
MAX2387/MAX2388/MAX2389
W-CDMA LNA/Mixer ICs
________________________________________________________________ Maxim Integrated Products
1
MAX2387/MAX2388
TOP VIEW
12
BIAS
11
GND
10
LNA_IN
9
V
CC
8
IF+
7
IF-
4
5
LO+
6
LO-
1
LNA_OUT
2
GAIN
3
MIX_IN
SHDN
BIAS
MAX2389
12
BIAS
11
GND
10
LNA_IN
9
V
CC
8
IF+
7
IF-
4
5
LO+
6
LO-
1
LNA_OUT
2
GAIN
3
MIX_IN
SHDN
BIAS
Pin Descriptions/Functional Diagrams
19-1834; Rev 1; 5/01
EVALUATION KIT
AVAILABLE
Ordering Information
PART
TEMP. RANGE
PIN-PACKAGE
MAX2387EGC
-40
°C to +85°C
12 QFN
MAX2388EGC
-40
°C to +85°C
12 QFN
MAX2389EGC
-40
°C to +85°C
12 QFN
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.
MAX2387/MAX2388/MAX2389
W-CDMA LNA/Mixer ICs
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(V
CC
= +2.7V to +3.3V, SHDN = high, R
BIAS
= 24k
, no input AC signals, T
A
= -40°C to +85°C. Typical values are at V
CC
= +2.7V,
T
A
= +25°C, unless otherwise noted.)
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
SHDN, GAIN to GND..................................-0.3V to (V
CC
+ 0.3V)
AC Signals ....................................................................+1V peak
Digital Input Current .........................................................±10mA
Continuous Power Dissipation (T
A
= +70°C)
12-Pin QFN (derate 11.9mW/°C above T
A
= +70°C) ...952mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Soldering Temperature (10s) ...........................................+300°C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX2387
10.7
12.4
MAX2388
9.9
11.7
High-gain mode
MAX2389
7.9
9.3
MAX2387
7.2
8.7
MAX2388
6.7
8.1
Operating Supply Current
I
CC
Low-gain mode
MAX2389
4.7
5.7
mA
Shutdown Supply Current
I
CC
SHDN = low
0.2
1.0
µA
Digital Input Logic High
V
IH
2.0
V
Digital Input Logic Low
V
IL
0.6
V
Input Logic High Current
I
IH
V
IN
= V
IH
1
µA
Input Logic Low Current
I
IL
V
IN
= V
IL
-20
µA
AC ELECTRICAL CHARACTERISTICS
(MAX238_ EV kit, V
CC
= 2.7V, SHDN = high, f
RF_IN
= f
LNA_IN
= 2140MHz, f
LO
= 2330MHz (f
IF
= 190MHz). Mixer, LNA, and LO input
ports are driven with 50
sources. R
BIAS
= 24k
±1%, P
LO
= -10dBm (MAX2387/MAX2388), P
LO
= -4dBm (MAX2389), P
RF
=
-30dBm. Typical values are at V
CC
= +2.7V, T
A
= +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
LNA PERFORMANCE: LOW-GAIN MODE (GAIN = HIGH)
RF Frequency Range (Note 1)
f
RF
2110
2170
MHz
T
A
= +25°C
13.5
15
16.5
Gain
G
LNA
T
A
= -40°C to +85°C (Note 2)
12.9
17.0
dB
MAX2387/MAX2388/MAX2389
W-CDMA LNA/Mixer ICs
_______________________________________________________________________________________
3
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Noise Figure (Notes 1, 3)
NF
LNA
T
A
= +25°C
1.7
2.2
dB
3
rd
-Order Input Intercept Point
(Note 4)
IIP3
LNA
T
A
= -40°C to +85°C (Note 2)
4.2
dBm
Input -1dB Compression Point
(Note 1)
IP
-1dB
-19
-13
dBm
LNA PERFORMANCE: LOW-GAIN MODE (GAIN = LOW)
MAX2387
-18.5
-16.5
-14.5
T
A
= +25°C
MAX2388/
MAX2389
-4.7
-2.8
-0.9
MAX2387
-10.5
-14
Gain
G
LNA
T
A
= -40°C to +85°C
(Note 2)
MAX2388/
MAX2389
5.4
-0.7
dB
MAX2387
19.2
21.3
Noise Figure (Notes 1, 3)
NF
LNA
MAX2388/
MAX2389
6.5
8.4
dB
MAX2387
1
3
rd
-Order Input Intercept Point
(Note 5)
IIP3
LNA
MAX2388/
MAX2389
3.4
dBm
MAX2387
-9.9
Input -1dB Compression Point
IP
-1dB
MAX2388/
MAX2389
-7.7
dBm
MIXER PERFORMANCE (GAIN = HIGH)
RF Frequency Range (Note 1)
f
RF
2110
2170
MHz
LO Frequency Range (Note 1)
f
LO
2250
2600
MHz
IF Frequency Range (Note 1)
f
IF
150
400
MHz
T
A
= +25°C
8.5
10
11.5
Power Conversion Gain
G
MXR
T
A
= -40°C to +85°C (Note 2)
7.5
12.5
dB
MAX2387
7.2
8.8
MAX2388
6.8
8.2
Noise Figure (SSB) (Note 1)
NF
MXR
T
A
= +25°C
MAX2389
7.3
9.5
dB
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX238_ EV kit, V
CC
= 2.7V, SHDN = high, f
RF_IN
= f
LNA_IN
= 2140MHz, f
LO
= 2330MHz (f
IF
= 190MHz). Mixer, LNA, and LO input
ports are driven with 50
sources. R
BIAS
= 24k
±1%, P
LO
= -10dBm (MAX2387/MAX2388), P
LO
= -4dBm (MAX2389), P
RF
=
-30dBm. Typical values are at V
CC
= +2.7V, T
A
= +25°C, unless otherwise noted.)
MAX2387/MAX2388/MAX2389
W-CDMA LNA/Mixer ICs
4
_______________________________________________________________________________________
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX238_ EV kit, V
CC
= 2.7V, SHDN = high, f
RF_IN
= f
LNA_IN
= 2140MHz, f
LO
= 2330MHz (f
IF
= 190MHz). Mixer, LNA, and LO input
ports are driven with 50
sources. R
BIAS
= 24k
±1%, P
LO
= -10dBm (MAX2387/MAX2388), P
LO
= -4dBm (MAX2389), P
RF
=
-30dBm. Typical values are at V
CC
= +2.7V, T
A
= +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX2387
6
MAX2388
6
3
rd
-Order Input Intercept Point
(Notes 1, 3)
IIP3
MXR
MAX2389
5
dBm
MAX2387
-13.9
-10
MAX2388
-16.3
-10.5
Input -1dB Compression Point
(Note 1)
IP
- 1dB,M XR
T
A
= -40°C to +85°C
MAX2389
-15.4
-10.5
dBm
MIXER PERFORMANCE (GAIN = LOW)
T
A
= +25
°C
7.5
9.0
10.5
Power Conversion Gain (Note 1)
G
MXR
T
A
= -40°C to +85°C
6.5
12.0
dB
MAX2387
6.9
8.4
MAX2388
6.1
7.4
Noise Figure (SSB) (Note 1)
NF
MXR
T
A
= +25°C
MAX2389
6.6
8.8
dB
MAX2387
0.7
MAX2388
0.2
3
rd
-Order Input Intercept Point
(Note 4)
IIP3
MXR
T
A
= +25°C
MAX2389
1.3
dBm
MAX2387
-15.0
-10.7
MAX2388
-18.2
-11.3
Input -1dB Compression Point
(Note 1)
IP
- 1dB,M XR
T
A
= -40°C to +85°C
MAX2389
-17.8
-11.9
dBm
Note 1: Guaranteed by design and characterization.
Note 2: MIN guaranteed by production test, MAX guaranteed by design and characterization.
Note 3: Includes input matching circuit loss.
Note 4: fIN1 = 2140MHz, fIN2 = 2141MHz, PIN = -30dBm per tone.
Note 5: fIN1 = 2140MHz, fIN2 = 2141MHz, PIN = -25dBm per tone.
MAX2387/MAX2388/MAX2389
W-CDMA LNA/Mixer ICs
_______________________________________________________________________________________
5
2
6
4
10
8
14
12
16
-40
10
-15
35
60
85
MAX2387
SUPPLY CURRENT vs. TEMPERATURE
MAX2387/88/89 toc01
TEMPERATURE (
°C)
SUPPLY CURRENT (mA)
V
CC
= +2.7V
HIGH-GAIN
V
CC
= +3.3V
LOW-GAIN
V
CC
= +4.3V
HIGH-GAIN
V
CC
= +4.3V
LOW-GAIN
V
CC
= +2.7V
LOW-GAIN
V
CC
= +3.3V
HIGH-GAIN
-20
-15
-10
-5
0
5
10
15
20
-40
-15
10
35
60
85
MAX2387/88/89 toc02
TEMPERATURE (
°C)
GAIN (dB)
MAX2387
LNA GAIN vs. TEMPERATURE
HIGH-GAIN MODE
LOW-GAIN MODE
-10
-4
-6
-8
-2
0
2
4
6
8
10
-40
10
-15
35
60
85
MAX2387/88/89 toc03
TEMPERATURE (
°C)
IIP3 (dBm)
MAX2387
LNA IIP3 vs. TEMPERATURE
HIGH-GAIN MODE
LOW-GAIN MODE
0
4
2
8
6
10
12
-13
-11
-10
-12
-9
-8
-7
MAX2387/88/89 toc04
LO INPUT LEVEL (dBm)
CONVERSION GAIN (dB)
HIGH-GAIN MODE
LOW-GAIN MODE
MAX2387
MIXER CONVERSION GAIN
vs. LO INPUT POWER
-10
-5
0
5
10
15
20
25
30
-40
-15
10
35
60
85
MAX2387
MIXER IIP2 AND IIP3 vs. TEMPERATURE
MAX2387/88/89 toc05
TEMPERATURE (
°C)
IIP (dBm)
IIP2: HIGH-GAIN
MODE, DIFFERENTIAL
LO
IIP2: HIGH-GAIN
MODE, SINGLE-
ENDED LO
IIP3: HIGH-GAIN
MODE
IIP3: LOW-GAIN
MODE
-16
-14
-10
-12
-8
-6
-40
10
-15
35
60
85
MAX2387/88/89 toc06
TEMPERATURE (
°C)
-1dB COMPRESSION POINT (dBm)
MAX2387
MIXER INPUT -1dB COMPRESSION POINT
vs. TEMPERATURE
0
5
10
15
20
25
30
35
40
2300
2320
2310
2330
2340
2350
2360
MAX2387
MIXER LO-IF AND LO-RF ISOLATION
vs. LO FREQUENCY
MAX2387/88/89 toc07
FREQUENCY (MHz)
ISOLATION (dB)
V
CC
= +2.7V
LO = -10dBm
LO-IF: HIGH-GAIN
MODE
LO-IF: LOW-GAIN
MODE
LO-RF: LOW-GAIN
MODE
LO-RF: HIGH-GAIN
MODE
0
5
15
10
20
25
2110
2130
2120
2140
2150
2160
2170
MAX2387
LNA NOISE FIGURE vs. FREQUENCY
MAX2387/88/89 toc08
FREQUENCY (MHz)
NOISE FIGURE (dB)
HIGH-GAIN MODE
LOW-GAIN MODE
8
7
6
5
4
-13
-10
-12
-11
-9
-8
-7
MAX2387/88/89 toc09
LO POWER (dB)
NOISE FIGURE (dB)
MAX2387
MIXER NOISE FIGURE vs. LO POWER
HIGH-GAIN MODE
LOW-GAIN MODE
Typical Operating Characteristics
(T
A
= +25
°C, V
CC
= +2.7V, unless otherwise noted.)
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