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MAX2369EGM+TD

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
MAX2369
Complete Dual-Band
Quadrature Transmitter
________________________________________________________________ Maxim Integrated Products 1
REF
N.C.
N.C.
N.C.
N.C.
TANK+
TANK-
IFLO
V
CC
SHDN
I-
I+
RFL
RFH
LOCK
V
CC
V
CC
V
CC
TXGATE
IFIN+
IFIN-
N.C.
N.C.
R
BIAS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
CLK
DI
CS
V
CC
V
CC
IFOUT+
IFOUT-
V
GC
V
CC
V
CC
Q+
Q-
GND
GND
GND
GND
LOL
LOH
N.C.
V
CC
GND
V
CC
IFCP
V
CC
MAX2369
+45 -45
90
0
0
90
/2
IFPLL
/2
Σ
Σ
19-1924; Rev 1; 10/01
General Description
The MAX2369 is a dual-band, triple-mode complete
transmitter for cellular phones. The device takes a differ-
ential I/Q baseband input and mixes it up to IF through a
quadrature modulator and IF variable-gain amplifier
(VGA). The signal is then routed to an external bandpass
filter and upconverted to RF through an SSB mixer and
RF VGA. The signal is further amplified with an on-board
PA driver.
The MAX2369 is designed for dual-band operation and
supports TDMA for the PCS band as well as TDMA and
AMPS for the cellular band. The desired mode of
operation is selected by loading data on the SPI™/
MICROWIRE™-compatible 3-wire serial bus. The
MAX2369 then routes the signals to the appropriate ports
depending on which band is selected. The MAX2369
includes two RF LO input ports and two PA driver ports,
eliminating the need for external switching circuitry.
The MAX2369 takes advantage of the serial bus to set
modes such as charge-pump current, high or low side-
band injection, and IF/RF gain balancing. It is packaged
in a small (7mm
✕
7mm) 48-pin QFN package with
exposed paddle.
Applications
Dual-Band TDMA/Amps Handsets
GAIT Handsets
Triple-Mode, Dual-Mode, or Single-Mode
Mobile Phones
Satellite Phones
Wireless Data Links (WAN/LAN)
Wireless Local Area Networks (LANs)
High-Speed Data Modems
High-Speed Digital Cordless Phones
Wireless Local Loop (WLL)
Features
♦ Dual-Band, Triple-Mode Operation
♦ +7dBm Output Power with -34dBc ACPR
(NADC Modulation)
♦ 100dB Power Control Range
♦ Supply Current Drops as Output Power Is Reduced
♦ On-Chip IF VCO and IF PLL
♦ QSPI/SPI/MICROWIRE-Compatible 3-Wire Bus
♦ Digitally Controlled Operational Modes
♦ +2.7V to +5.5V Operation
♦ Single Sideband Upconverter Eliminates SAW
Filters
♦ Power Control Distributed at IF and RF for
Optimum Dynamic Range
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
Pin Configuration appears at end of data sheet.
Selector Guide appears at end of data sheet.
Functional Diagram
*Exposed paddle
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Ordering Information
PART TEMP. RANGE PIN-PACKAGE
MAX2369EGM -40°C to +85°C 48 QFN-EP*
MAX2369
Complete Dual-Band
Quadrature Transmitter
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(MAX2369 Test Fixture: V
CC
= V
BATT
= +2.75V, SHDN = TXGATE = +2.0V, VGC = +2.5V, R
BIAS
= 16kΩ, T
A
= -40°C to +85°C,
unless otherwise noted. Typical values are at T
A
= +25°C, and operating modes are defined in Table 6.)
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 +3.6V
RFL, RFH.............................................................................+5.5V
DI, CLK, CS, VGC, SHDN, TXGATE,
LOCK.....................................................-0.3V to (V
CC
+ 0.3V)
AC Input Pins (IFIN, Q, I, TANK, REF,
LOL, LOH) ...............................................................1.0V peak
Digital Input Current (SHDN, TXGATE,
CLK, DI, CS) ................................................................±10mA
Continuous Power Dissipation (T
A
= +70°C)
48-Pin QFN-EP (derate 27mW/°C above +70°C) ..............2.5W
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
PARAMETER CONDITIONS MIN TYP MAX UNITS
Operating Supply Voltage 2.7 3.0 V
VGC = 0.5V 80 106
VGC = 2.0V 85 112PCS mode
VGC = 2.5V 120 150
VGC = 0.5V 82 107
VGC = 2.0V 87 113
Cellular
digital mode
VGC = 2.5V 123 155
VGC = 0.5V 77 101
VGC = 2.0V 80 105FM mode
VGC = 2.5V 105 133
mA
(Note 1)
Addition for IFLO buffer 6.5 11
TXGATE = 0.6V 16 25
Operating Supply Current
SHDN = 0.6V, sleep mode 0.5 20 µA
Logic High 2.0 V
Logic Low 0.6 V
Logic Input Current -5 +5 µA
VGC Input Current -12 +12 µA
VGC Input Resistance During Shutdown SHDN = 0.6V 200 280 kΩ
Lock Indicator High 50kΩ pullup load V
CC
- 0.4 V
Lock Indicator Low 50kΩ pullup load 0.4 V
MAX2369
Complete Dual-Band
Quadrature Transmitter
_______________________________________________________________________________________ 3
AC ELECTRICAL CHARACTERISTICS
(MAX2369 Evaluation Kit: 50Ω system, operating modes as defined in Table 6, input voltage at I and Q = 200mV
RMS
differential,
common mode = V
CC
/2, 300kHz quadrature CW tones, IF synthesizer locked with passive lead-lag second-order loop filter, REF =
200mVp-p at 19.44MHz, V
CC
= SHDN = CS = TXGATE = +2.75V, V
BAT
= +2.75V, IF output load = 400Ω, LOH, LOL input power =
-7dBm, f
LOL
= 1017.26MHz, f
LOH
= 2061.26MHz, IFIN = 125mV
RMS
at 181.26MHz, IS-136 TDMA modulation, f
RFH
= 1880MHz, f
RFL
= 836MHz, T
A
= +25°C, unless otherwise noted.)
PARAMETER CONDITIONS MIN TYP MAX UNITS
MODULATOR, QUADRATURE MODES (Digital Cellular, Digital PCS, FM IQ)
IF Frequency Range 120–235 MHz
I/Q Common-Mode Input
Voltage
V
CC
= 2.7V to 3.0V (Notes 2, 3, 4) 1.35 V
CC
/ 2
V
CC
–
1.25
V
IF Gain Control Range VGC = 0.5V to 2.5V, IFG = 100 85 dB
IF Output Power, Digital Mode VGC = 2.5V, IFG = 100 -10 dBm
Gain Variation Over Temperature Relative to +25°C, T
A
= -40°C to +85°C (Note 4) ±0.8 dB
RX Band Noise Power
VGC = 2.5V, IFG = 100, F
IF
= 181.26MHz, noise
measured at F
IF
± 20MHz
-145 dBm/Hz
Carrier Suppression VGC = 2.5V, IFG = 100 30 49 dB
Sideband Suppression VGC = 2.5V, IFG = 100 30 38 dB
MODULATOR, FM MODE
IF Gain Control Range VGC = 0.5V to 2.5V, IFG = 100 85 dB
VGC = 2.5V, IFG = 111, I/Q modulation -8.5
Output Power
VGC = 2.5V, IFG = 111, direct VCO modulation -5.5
dBm
UPCONVERTER AND PREDRIVER
IF Frequency Range 120–235 MHz
Low-Band Frequency Range RFL port 800–1000 MHz
High-Band Frequency Range RFH port 1700–2000 MHz
LOL Frequency Range 800–1150 MHz
LOH Frequency Range 1400–2300 MHz
VGC = 2.5V, NADC modulation, ACPR < -32dBc/
-55dBc at +30kHz/+60kHz offset
5.8 7
Output Power, RFL (Note 4)
VGC = 2.5V, FM mode 9 12
dBm
Output Power, RFH (Note 4)
VGC = 2.6V, NADC modulation, ACPR = -32dB/
-55dBc at +30kHz/+60kHz offset
4 6.6 dBm
Power-Control Range VGC = 0.5V to 2.5V 30 dB
Gain Variation Over Temperature Relative to +25°C, T
A
= -40°C to +85°C (Note 4) ±3 dB
RFL -25
RF Image Rejection (Note 4)
RFH -24
dBc
RFL, VGC = 2.5V -22
LO Leakage (Note 4)
RFH, VGC = 2.6V -24
dBm
RFL, VGC = 2.5V -133
RX Band Noise Power
RFH, VGC = 2.6V -134
dBm/
Hz
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

MAX2369EGM+TD

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Manufacturer:
Maxim Integrated
Description:
RF Transmitter Complete Dual-Band Quadrature Txr
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