19-1834; Rev 1; 5/01
W-CDMA LNA/Mixer ICs
General Description
Features
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.
ꢀ Ultra-Low Current Consumption: 10.7mA
(MAX2387), 9.9mA (MAX2388), and 7.9mA
(MAX2389)
ꢀ +2.7V to +3.3V Single-Supply Operation
ꢀ Mixer NF: 7dB SSB
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.
ꢀ Cascaded Noise Figure: 2.3dB
ꢀ LNA Low-Gain Mode: 32dB Gain Step (MAX2387)
or 18dB Gain Step (MAX2388/MAX2389)
ꢀ Mixer IIP3: 6dBm
ꢀ < 1µA Shutdown Current
✕
ꢀ Ultra-Small (3mm 3mm) 12-Pin QFN Package
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.
Ordering Information
PART
TEMP. RANGE
-40 C to +85 C
-40 C to +85 C
-40 C to +85 C
PIN-PACKAGE
12 QFN
MAX2387EGC
MAX2388EGC
MAX2389EGC
12 QFN
These devices operate from a +2.7V to +3.3V single sup-
12 QFN
✕
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
Pin Descriptions/Functional Diagrams
BIAS
12
GND LNA_IN
BIAS
12
GND LNA_IN
TOP VIEW
LNA_OUT
MAX2387/MAX2388
MAX2389
11
10
11
10
1
LNA_OUT
1
9
V
CC
9
V
CC
BIAS
BIAS
GAIN
2
3
GAIN
2
3
8
7
IF+
IF-
8
7
IF+
IF-
MIX_IN
MIX_IN
4
5
6
4
5
6
LO+
LO-
LO+
LO-
SHDN
SHDN
________________________________________________________________ Maxim Integrated Products
1
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.