max2388 Maxim Integrated Products, Inc., max2388 Datasheet

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max2388

Manufacturer Part Number
max2388
Description
W-cdma Lna/mixer Ics
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
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
leadless packages (QFN).
19-1834; Rev 1; 5/01
________________________Applications
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.
Japanese 3rd-Generation W-CDMA Cellular
Phones
Dual-Mode W-CDMA/GSM Cellular Phones
TOP VIEW
________________________________________________________________ Maxim Integrated Products
LNA_OUT
MIX_IN
GAIN
General Description
1
2
3
SHDN
BIAS
12
4
GND
LO+
11
5
3mm) 12-pin
BIAS
LNA_IN
10
LO-
6
MAX2387/MAX2388
9
8
7
Pin Descriptions/Functional Diagrams
V
IF+
IF-
CC
W-CDMA LNA/Mixer ICs
o Ultra-Low Current Consumption: 10.7mA
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)
o Mixer IIP3: 6dBm
o < 1µA Shutdown Current
o Ultra-Small (3mm
(MAX2387), 9.9mA (MAX2388), and 7.9mA
(MAX2389)
or 18dB Gain Step (MAX2388/MAX2389)
MAX2387EGC
MAX2388EGC
MAX2389EGC
LNA_OUT
PART
MIX_IN
GAIN
1
2
3
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
SHDN
Ordering Information
BIAS
3mm) 12-Pin QFN Package
12
4
GND
LO+
11
5
BIAS
LNA_IN
10
LO-
6
12 QFN
12 QFN
12 QFN
PIN-PACKAGE
Features
MAX2389
9
8
7
V
IF+
IF-
CC
1

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max2388 Summary of contents

Page 1

... 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. ...

Page 2

... Low-gain mode SHDN = low 2140MHz 2330MHz (f RF_IN LNA_IN LO = 24kΩ ±1 -10dBm (MAX2387/MAX2388 +25°C, unless otherwise noted.) A CONDITIONS +25°C A LNA T = -40°C to +85°C (Note +2.7V, CC MIN TYP MAX MAX2387 10.7 12.4 MAX2388 9.9 11.7 MAX2389 7 ...

Page 3

... RF Frequency Range (Note 1) LO Frequency Range (Note 1) IF Frequency Range (Note 1) Power Conversion Gain Noise Figure (SSB) (Note 1) _______________________________________________________________________________________ W-CDMA LNA/Mixer ICs = f = 2140MHz, f RF_IN LNA_IN LO = 24kΩ ±1 -10dBm (MAX2387/MAX2388), P BIAS LO = +25°C, unless otherwise noted.) A CONDITIONS +25°C LNA A IIP3 T = -40° ...

Page 4

... Note 4: f IN1 = 2140MHz, f IN2 = 2141MHz -30dBm per tone. Note 5: f IN1 = 2140MHz, f IN2 = 2141MHz -25dBm per tone. 4 _______________________________________________________________________________________ = f = 2140MHz 2330MHz (f RF_IN LNA_IN LO = 24kΩ ±1 -10dBm (MAX2387/MAX2388 +25°C, unless otherwise noted.) A CONDITIONS MXR T = -40°C to +85° +25°C ...

Page 5

V = +2.7V, unless otherwise noted MAX2387 SUPPLY CURRENT vs. TEMPERATURE +3. +4. +2. HIGH-GAIN HIGH-GAIN LOW-GAIN +2. ...

Page 6

... TEMPERATURE (°C) MAX2388 LNA NOISE FIGURE vs. FREQUENCY 10 LOW-GAIN MODE HIGH-GAIN MODE 2 0 2110 2120 2130 2140 2150 2160 2170 FREQUENCY (MHz) MAX2388 LNA IIP3 vs. TEMPERATURE 10 8 HIGH-GAIN MODE LOW-GAIN MODE - -10 -40 - TEMPERATURE (°C) ...

Page 7

V = +2.7V, unless otherwise noted MAX2389 SUPPLY CURRENT vs. TEMPERATURE +3. +4. HIGH-GAIN HIGH-GAIN +4. +2. LOW-GAIN HIGH-GAIN ...

Page 8

... Shutdown Input. Drive low to enable shutdown mode. Drive high or connect to V SHDN 4 operation. Noninverting LO Input for LO Buffer (MAX2387/MAX2388) or Mixer (MAX2389). Differential input 5 LO+ impedance is 200Ω. AC-couple to GND when the LO is driven single-endedly. Inverting LO Input for LO Buffer (MAX2387/MAX2388) or Mixer (MAX2389). Differential input ...

Page 9

... GAIN 6800pF 20Ω RX BPF V CC Figure 1. MAX2387/MAX2388/MAX2389 Differential IF Load; Single-Ended VCO _______________________________________________________________________________________ W-CDMA LNA/Mixer ICs IF Output Port For the best gain and noise performance, use high- quality components for the LNA input matching circuit, and solder the slug evenly to the board ground plane. ...

Page 10

... W-CDMA LNA/Mixer ICs 2.2nH RX 0.8pF TX LNA_OUT 0.8pF 10nF 10kΩ 2.2nH GAIN 6800pF 20Ω MIX_IN RX BPF V CC Figure 2. MAX2387/MAX2388/MAX2389 Differential IF Load; Differential VCO 10 ______________________________________________________________________________________ 24kΩ GND BIAS V LNA_IN BIAS IF 10kΩ IF MAX2387 MAX2388 MAX2389 10nF 10kΩ ...

Page 11

Table 1. LNA Input/Output S-Parameters (V S-PARAMETERS LNA (S11) FREQUENCY MAGNITUDE (MHZ) 600 0.83287 700 0.81889 800 0.80364 900 0.78522 1000 0.76638 1100 0.74542 1200 0.72614 1300 0.70338 1400 0.68291 1500 0.66114 1600 0.63958 1700 0.61641 1800 0.59303 1900 0.56989 ...

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