19-1567; Rev 1; 2/01
KIT
ATION
EVALU
E
BL
AVAILA
+2.7V, Single-Supply, Cellular-Band
Linear Power Amplifiers
General Description
Features
o
Low Average CDMA Current Consumption in
Typical Urban Scenario
55mA (MAX2267)
90mA (MAX2268)
50mA (MAX2269)
o
0.5µA Shutdown Mode Eliminates External
Supply Switch
o
±0.8dB Gain Variation Over Temperature
o
No External Reference or Logic Interface
Circuitry Needed
o
Supply Current and ACPR Margin Dynamically
Adjustable
o
+2.7V to +4.5V Single-Supply Operation
o
35% Efficiency at +2.7V Operation
MAX2267/MAX2268/MAX2269
The MAX2267/MAX2268/MAX2269 power amplifiers are
optimized for IS-98-based CDMA and PDC cellular tele-
phones operating in the Japanese cellular-frequency
band. When matched for CDMA operation, the ampli-
fiers achieve 27dBm output power with 35% efficiency
(MAX2268), with margin over the adjacent and alternate
channel specification. At a +17dBm output—a very
common power level for CDMA phones—the MAX2268
still has 7% efficiency, yielding excellent overall talk
time. At the same power level, the MAX2267/MAX2269
have an unprecedented 12%/17% efficiency, while still
obtaining 28%/29% efficiency at maximum output
power.
The MAX2267/MAX2268/MAX2269 have internally refer-
enced bias ports that are normally terminated with sim-
ple resistors. The bias ports allow customization of
ACPR margin and gain. They can also be used to
“throttle back” bias current when generating low power
levels. The MAX2267/MAX2268/MAX2269 have excel-
lent gain stability over temperature (±0.8dB), so over-
design of driver stages and excess driver current are
dramatically reduced, further increasing the phone’s
talk time. The devices can be operated from +2.7V to
+4.5V while meeting all ACPR specifications over the
entire temperature range.
The devices are packaged in a 16-pin TSSOP with
exposed paddle (EP). For module or direct chip attach
applications, the MAX2267 is also available in die form.
Ordering Information
PART
MAX2267EUE
MAX2267E/D
MAX2268EUE
MAX2269EUE
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
16 TSSOP-EP
Dice*
16 TSSOP-EP
16 TSSOP-EP
TSSOP-EP
5mm x 6.4mm
*Contact
factory for dice specifications.
Applications
Cellular-Band CDMA Phones
Cellular-Band PDC Phones
2-Way Pagers
Power-Amplifier Modules
IN1 1
Pin Configurations/
Functional Diagrams
TOP VIEW
MAX2267/MAX2269
16 IN0
15 BIAS2H
14 V
CC
BIAS
13 GND
12 NFP
11 OUT0
10 BIAS1L
9
OUT1
Selector Guide
HIGH POWER-ADDED EFFICIENCY (%)
DEVICE
CDMA AT
+27dBm
28
34
29
CDMA AT
+17dBm
12
7
17
PDC AT
+29dBm
—
41
—
PWR 2
V
CC
3
BIAS1H 4
V
CC
5
SHDN 6
BIAS2L 7
OUT1 8
MAX2267
MAX2268
MAX2269
TSSOP-EP
Pin Configurations continued at end of data sheet.
________________________________________________________________
Maxim Integrated Products
1
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.
+2.7V, Single-Supply, Cellular-Band
Linear Power Amplifiers
MAX2267/MAX2268/MAX2269
ABSOLUTE MAXIMUM RATINGS
V
CC
to GND (no RF input) ........................................-0.3V to +5V
Logic Inputs to GND...................................-0.3V to (V
CC
+ 0.3V)
BIAS_ _ to GND ..........................................-0.3V to (V
CC
+ 0.3V)
RF Input Power ...................................................+6dBm (20mW)
Logic Input Current...........................................................±10mA
Output VSWR with +6dBm Input ..........................................2.5:1
Total DC Power Dissipation (T
PADDLE
= +100°C)
16-Pin TSSOP-EP (derate 60mW/°C
above T
PADDLE
= +100°C)..............................................4W
θ
JA
.................................................................................8°C/W
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°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.
DC ELECTRICAL CHARACTERISTICS
(V
CC
= +2.7V to +4.5V no input signal applied, V
SHDN
= 2.0V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +3.5V and T
A
= +25°C.) (Note 8)
PARAMETER
Operating Voltage Range
Idle Current
Shutdown Supply Current
Logic Input Current High
Logic Input Current Low
Logic Threshold High
Logic Threshold Low
SYMBOL
V
CC
I
CC
I
CC
MAX2267/MAX2269
MAX2268
SHDN
= PWR = GND
Logic = V
CC
Logic = GND
-1
-1
2.0
0.8
PWR = V
CC
PWR = GND
CONDITIONS
MIN
2.7
100
34
90
0.5
10
5
1
µA
µA
µA
V
V
mA
TYP
MAX
4.5
UNITS
V
AC ELECTRICAL CHARACTERISTICS—MAX2267
(MAX2267 EV kit, V
CC
= V
PWR
= V
SHDN
= +3.5V, f
IN
= 906MHz, CDMA modulation,
SHDN
= V
CC
, matching networks tuned for
887MHz to 925MHz operation, 50Ω system, T
A
= +25°C, unless otherwise noted.)
PARAMETER
Frequency Range (Notes 1, 2)
SYMBOL
f
IN
G
P
T
A
= +25°C
Power Gain (Note 1)
T
A
= T
MIN
to T
MAX
PWR = GND
Gain Variation vs. Temperature
(Note 1)
Output Power
(High-Power Mode) (Note 1)
T
A
= T
MIN
to T
MAX
, relative to T
A
= +25°C
ACPR specification
met with
f
IN
= 887MHz to
925MHz
ACPR specification
met with
f
IN
= 887MHz to
925MHz
PWR = V
CC
PWR = V
CC
= 2.8V
PWR = GND
PWR = GND,
V
CC
= 2.8V
27
dBm
24.5
16
14
25.5
17.5
15.5
dBm
CONDITIONS
PWR = V
CC
or GND
MIN
887
24.5
23
20.5
23
±0.8
dB
26
dB
TYP
MAX
925
UNITS
MHz
P
OUT
Output Power
(Low-Power Mode) (Note 1)
P
OUT
2
_______________________________________________________________________________________
+2.7V, Single-Supply, Cellular-Band
Linear Power Amplifiers
AC ELECTRICAL CHARACTERISTICS—MAX2267 (continued)
(MAX2267 EV kit, V
CC
= V
PWR
= V
SHDN
= +3.5V, f
IN
= 906MHz, CDMA modulation,
SHDN
= V
CC
, matching networks tuned for
887MHz to 925MHz operation, 50Ω system, T
A
= +25°C, unless otherwise noted.)
PARAMETER
Adjacent-Channel Power Ratio
Limit (Notes 1, 2)
Alternate-Channel Power Ratio
Limit (Notes 1, 2)
Power-Added Efficiency
(Note 3)
Power-Mode Switching Time
Turn-On Time (Notes 1, 4)
Maximum Input VSWR
Nonharmonic Spurious due
to Load Mismatch (Notes 1, 5)
Noise Power (Note 6)
Harmonic Suppression
VSWR
SYMBOL
ACPR
ACPR
PAE
CONDITIONS
V
CC
= 2.8V to 4.5V, offset = 885kHz,
30kHz BW, f
IN
= 887MHz to 925MHz
V
CC
= 2.8V to 4.5V, offset = 1980kHz,
30kHz BW, f
IN
= 887MHz to 925MHz
PWR = V
CC
, P
OUT
= +27dBm
PWR = GND, P
OUT
= 17.5dBm
(Note 4)
PWR = V
CC
or GND
f
IN
= 887MHz to 925MHz, PWR = GND or V
CC
P
IN
= +6dBm
Measured at 851MHz
PWR = GND, measured at 851MHz
(Note 7)
-137
-134
32
MIN
-44
-56
TYP
-48
-57.5
28
12
550
1
2.3:1
-60
dBc
dBm/Hz
dBc
5
MAX
UNITS
dBc
dBc
%
ns
µs
MAX2267/MAX2268/MAX2269
AC ELECTRICAL CHARACTERISTICS—MAX2268
(MAX2268 EV kit, V
CC
= V
SHDN
= +3.5V, f
IN
= 906MHz, CDMA modulation, matching networks tuned for 887MHz to 925MHz opera-
tion, 50Ω system, T
A
= +25°C, unless otherwise noted.)
PARAMETER
Frequency Range (Notes 1, 2)
Power Gain (Note 1)
Gain Variation vs. Temperature
(Note 1)
SYMBOL
f
IN
G
P
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
, relative to T
A
= +25°C
ACPR specification
met with
f
IN
= 887MHz to
925MHz
V
CC
= 3.5V
V
CC
= 2.8V
27
dBm
24.5
-44
-56
25.5
-48
-57.5
35
5.5
1
VSWR
f
IN
= 887MHz to 925MHz
1.5:1
5
dBc
dBc
%
µs
CONDITIONS
MIN
887
25.5
24
±0.7
27
TYP
MAX
925
UNITS
MHz
dB
dB
Output Power (Note 1)
P
OUT
Adjacent-Channel Power Ratio
(Notes 1, 2)
Alternate-Channel Power Ratio
(Notes 1, 2)
Power-Added Efficiency
(Note 3)
Turn-On Time (Notes 1, 4)
Maximum Input VSWR
ACPR
ACPR
PAE
V
CC
= 2.8V to 4.5V, offset = 885kHz,
30kHz BW, f
IN
= 887MHz to 925MHz
V
CC
= 2.8V to 4.5V, offset = 1980kHz,
30kHz BW, f
IN
= 887MHz to 925MHz
P
IN
adjusted to give P
OUT
= 27dBm
P
IN
adjusted for P
OUT
= 13.6dBm
_______________________________________________________________________________________
3
+2.7V, Single-Supply, Cellular-Band
Linear Power Amplifiers
MAX2267/MAX2268/MAX2269
AC ELECTRICAL CHARACTERISTICS—MAX2268 (continued)
(MAX2268 EV kit, V
CC
= V
SHDN
= +3.5V, f
IN
= 906MHz, CDMA modulation, matching networks tuned for 887MHz to 925MHz opera-
tion, 50Ω system, T
A
= +25°C, unless otherwise noted.)
PARAMETER
Nonharmonic Spurious Due
to Load Mismatch (Notes 1, 5)
Noise Power (Note 6)
Harmonic Suppression
SYMBOL
P
IN
= +6dBm
Measured at 851MHz
(Note 7)
-138
47
CONDITIONS
MIN
TYP
MAX
-60
UNITS
dBc
dBm/Hz
dBc
AC ELECTRICAL CHARACTERISTICS—MAX2269
(MAX2269 EV kit, V
CC
= V
PWR
= V
SHDN
= +3.5V, f
IN
= 906MHz, CDMA modulation,
SHDN
= V
CC
, matching networks tuned for
887MHz to 925MHz operation, 50Ω system, T
A
= +25°C, unless otherwise noted.)
PARAMETER
Frequency Range (Notes 1, 2)
SYMBOL
f
IN
G
P
T
A
= +25°C
Power Gain (Note 1)
T
A
= T
MIN
to T
MAX
PWR = GND
PWR = V
CC
Gain Variation vs. Temperature
(Note 1)
Output Power
(High-Power Mode) (Note 1)
T
A
= T
MIN
to T
MAX
, relative to T
A
= +25°C
ACPR specification
met with
f
IN
= 887MHz to
925MHz
ACPR specification
met with
f
IN
= 887MHz to
925MHz
PWR = V
CC
PWR = V
CC
= 2.8V
PWR = GND
PWR = GND,
V
CC
= 2.8V
27
dBm
24.5
15.5
13.5
25.5
17
dBm
15
CONDITIONS
PWR = V
CC
or GND
MIN
887
24.5
23
23.5
26
±0.8
dB
26
dB
TYP
MAX
925
UNITS
MHz
P
OUT
Output Power
(Low-Power Mode) (Note 1)
Adjacent-Channel Power Ratio
Limit (Notes 1, 2)
Alternate-Channel Power Ratio
Limit (Notes 1, 2)
Power-Added Efficiency
(Note 3)
P
OUT
ACPR
ACPR
PAE
V
CC
= 2.8V to 4.5V, offset = 885kHz,
30kHz BW, f
IN
= 887MHz to 925MHz
V
CC
= 2.8V to 4.5V, offset = 1980kHz,
30kHz BW, f
IN
= 887MHz to 925MHz
PWR = V
CC
, P
OUT
= +27dBm
PWR = GND, P
OUT
= 17dBm
-44
-56
-48
-57.5
29
17
dBc
dBc
%
4
_______________________________________________________________________________________
+2.7V, Single-Supply, Cellular-Band
Linear Power Amplifiers
AC ELECTRICAL CHARACTERISTICS—MAX2269 (continued)
(MAX2269 EV kit, V
CC
= V
PWR
= V
SHDN
= +3.5V, f
IN
= 906MHz, CDMA modulation,
SHDN
= V
CC
, matching networks tuned for
887MHz to 925MHz operation, 50Ω system, T
A
= +25°C, unless otherwise noted.)
PARAMETER
Power-Mode Switching Time
Turn-On Time (Notes 1, 4)
Maximum Input VSWR
Nonharmonic Spurious due to
Load Mismatch (Notes 1, 5)
Noise Power (Note 6)
Harmonic Suppression
VSWR
SYMBOL
(Note 4)
PWR = V
CC
or GND
f
IN
= 887MHz to 925MHz, PWR = GND or V
CC
P
IN
= +6dBm
Measured at 851MHz
PWR = GND, measured at 851MHz
(Note 7)
-137
-130
32
CONDITIONS
MIN
TYP
550
1
2.4:1
-60
dBc
dBm/Hz
dBc
5
MAX
UNITS
ns
µs
MAX2267/MAX2268/MAX2269
Note 1:
Minimum and maximum values are guaranteed by design and characterization, not production tested.
Note 2:
P
MAX
is met over this frequency range at the ACPR limit with a single matching network. For optimum performance at other
frequencies, the output matching network must be properly designed. See the
Applications Information
section. Operation
between 750MHz and 1000MHz is possible but has not been characterized.
Note 3:
PAE is specified into a 50Ω load, while meeting the ACPR requirement.
Note 4:
Time from logic transition until P
OUT
is within 1dB of its final mean power.
Note 5:
Murata isolator as load with 20:1 VSWR any phase angle after isolator.
Note 6:
Noise power can be improved by using the circuit in Figures 1 and 2.
Note 7:
Harmonics measured on the evaluation kit, which provides some harmonic attenuation in addition to the rejection provided
by the IC. The combined suppression is specified.
Note 8:
≥+25°C
guaranteed by production test,
≤+25°C
guaranteed through correlation to worst-case temperature testing.
Typical Operating Characteristics
(MAX2267/MAX2268/MAX2269 EV kits, V
CC
= +3.5V,
SHDN
= V
CC
, CDMA modulation, T
A
= +25°C, unless otherwise noted.)
MAX2267
SHUTDOWN CURRENT vs. SUPPLY VOLTAGE
MAX2267/9-01
MAX2267
GAIN vs. SUPPLY VOLTAGE
MAX2267/9-02
MAX2267
GAIN vs. SUPPLY VOLTAGE
PWR = GND
T
A
= -40°C
26
T
A
= +25°C
MAX2267/9-03
140
120
SUPPLY CURRENT (nA)
100
PWR = GND
SHDN = GND
NO INPUT DRIVE
T
A
= +85°C
30
PWR = V
CC
T
A
= -40°C
28
28
GAIN (dB)
80
60
40
20
24
T
A
= +25°C
22
T
A
= -40°C
T
A
= +25°C
T
A
= +85°C
GAIN (dB)
26
24
22
T
A
= +85°C
20
0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
20
2.5
3.0
3.5
4.0
4.5
5.0
SUPPLY VOLTAGE (V)
18
2.5
3.0
3.5
4.0
4.5
5.0
SUPPLY VOLTAGE (V)
_______________________________________________________________________________________
5
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