Rainbow Electronics MAX2389 - Manual

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
♦ 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
♦ 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
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.