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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX2395 Datasheet

WCDMA Quasi-Direct Modulator

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19-2970; Rev 3; 1/09
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EVAALVUAAILTAIOBNLEKIT
WCDMA Quasi-Direct Modulator
with VGA and PA Driver
General Description
The MAX2395 fully monolithic quasi-direct modulator IC
is designed for use in WCDMA/UMTS transmitters. The
quasi-direct modulation architecture reduces system
cost, component count, and board space compared to
transmitters using an IF SAW filter with IF VCO and IF
synthesizer blocks.
The MAX2395 includes I/Q baseband filters, an IF I/Q
modulator with VGA, a fully monolithic VCO with PLL,
an upconverter mixer, an RF VGA, and a power amplifi-
er (PA) driver. The use of the quasi-direct modulator
scheme ensures 5% (typ) EVM and a 30dB (min) carri-
er suppression. The RF VGA and IF VGA provide a
nominal 90dB of output power control. No external local
oscillators are required, enabling efficient implementa-
tion of variable duplex offset systems.
The PLL is programmed by loading data on the SPI™/
MICROWIRE™-compatible 3-wire serial bus. The IC
operates from a single +2.7V to +3.3V supply. The
devices are available in space-saving 28-pin QFN and
thin QFN exposed-pad packages (5mm x 5mm).
Applications
WCDMA Phones
UMTS/EDGE Phones
W-TDD Phones
Pin Configuration/
Functional Diagram
Features
o 5% EVM for POUT = +6dBm
o 1920MHz to 1980MHz Operation
o +2.7V to +3.3V Single-Supply Operation
o +6dBm Output Power at 72mA
o 81dB Minimum Automatic Gain-Control (AGC)
Range
o Automatic ICC Throttle Back for Optimal Power
Consumption
o No IF SAW Filter Necessary
o On-Chip RF PLL, with Fully Monolithic VCO
o Ultra-Low External Component Count
Ordering Information
PART
MAX2395EGI
MAX2395ETI
MAX2395ETI+
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
28 QFN-EP*
28 TQFN-EP*
28 TQFN-EP*
*EP = Exposed pad.
+Denotes a lead(Pb)-free/RoHS-compliant package.
+
N.C. 1
POUT 2
28 27
SERIAL
BUS
26
VCC_PA 3
BIAS_SET 4
25 24 23 22
21 GND_VCO
20 VCC_VCO
RF
INTEGER-N
19 RFCP
LO PLL
GEN 18 VCC_CP
VGC 5
VCC_IF 6
0°
90°
MAX2395
17 VCC_PLL
16 REF
VCC_BB 7
15 LD
8 9 10 11 12 13 14
SPI is a trademark of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX2395 Datasheet

WCDMA Quasi-Direct Modulator

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WCDMA Quasi-Direct Modulator
with VGA and PA Driver
ABSOLUTE MAXIMUM RATINGS
VCC to GND ...........................................................-0.3V to +3.6V
All Other Pins to GND..................................-0.3V to VCC_ + 0.3V
I_, Q_, REF to GND..............................................................1VP-P
Digital Input Current .........................................................±10mA
Continuous Power Dissipation (TA = +70°C)
28-Pin QFN (derate 20.8mW/°C above +70°C) .........1667mW
28-Pin TQFN (derate 21.3mW/°C above +70°C) .......1702mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
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.
CAUTION! ESD SENSITIVE DEVICE
DC ELECTRICAL CHARACTERISTICS
(VCC = +2.7V to +3.3V, RBIAS = 12k, TA = -40°C to +85°C. Typical values are at VCC = +2.85V and TA = +25°C, unless otherwise
noted.) (Notes 1, 2)
PARAMETER
Supply Voltage Range
Operating Supply Current
Idle Current
Shutdown Current
VGC Input Current
VGC Input Current During Shutdown
Gain-Control Voltage Range
Lock Indicator High—Leakage Current
Lock Indicator Low—Sink Voltage
SHDN Input Logic-High, VDH
SHDN Input Logic-Low
SHDN Input Resistance
Digital Input Logic-High, VIH
Digital Input Logic-Low, VIL
Digital Control Pin Input Current
I/Q Input Leakage Current
I/Q DC Common-Mode Voltage
CONDITIONS
VVGC = 0.35V
POUT = 0dBm
POUT = +6dBm
IDLE = VIL
SHDN = 0
SHDN = VIL
IDLE_PRG = 0
IDLE_PRG = 1
PLL locked, VLD = VCC
PLL unlocked, sinking 100µA
Resistance to ground
All digital input pins including IDLE, SDATA,
SCLK, and CS (Note 3)
All digital input pins including IDLE, SDATA,
SCLK, and CS (Note 3)
IDLE, SDATA, SCLK, and CS
MIN TYP MAX UNITS
2.7 2.85 3.3
V
46 60
67 82
72 90 mA
16 21
19 27
0.5 10
µA
-10 +10 µA
1 µA
0.35 2.20 V
4 µA
0.4 V
1.5
VCC
V
0 0.5 V
50 k
0.7 x
VDH
VCC
V
0
0.3 x
VDH
V
-10 +10 µA
-10 +10 µA
1.35 1.45 1.65
V
2 _______________________________________________________________________________________


Part Number MAX2395
Description WCDMA Quasi-Direct Modulator
Maker Maxim Integrated Products
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MAX2395 Datasheet PDF






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