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MAX2242EBC+T

P1-P3P4-P6P7-P9
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.
General Description
The MAX2242 low-voltage linear power amplifier (PA) is
designed for 2.4GHz ISM-band wireless LAN applica-
tions. It delivers +22.5dBm of linear output power with
an adjacent-channel power ratio (ACPR) of <-33dBc
1st-side lobe and <-55dBc 2nd-side lobe, compliant
with the IEEE 802.11b 11MB/s WLAN standard with at
least 3dB margin. The PA is packaged in the tiny 3x4
chip-scale package (UCSP™), measuring only 1.5mm x
2.0mm, ideal for radios built in small PC card and com-
pact flash card form factors.
The MAX2242 PA consists of a three-stage PA, power
detector, and power management circuitry. The power
detector provides over 20dB of dynamic range with
±0.8dB accuracy at the highest output power level. An
accurate automatic level control (ALC) function can be
easily implemented using this detector circuit.
The PA also features an external bias control pin.
Through the use of an external DAC, the current can be
throttled back at lower output power levels while main-
taining sufficient ACPR performance. As a result, the
highest possible efficiency is maintained at all power
levels. The device operates over a single +2.7V to
+3.6V power-supply range. An on-chip shutdown fea-
ture reduces operating current to 0.5µA, eliminating the
need for an external supply switch.
________________________Applications
IEEE 802.11b DSSS Radios
Wireless LANs
HomeRF
2.4GHz Cordless Phones
2.4GHz ISM Radios
Features
♦ 2.4GHz to 2.5GHz Operating Range
♦ +22.5dBm Linear Output Power (ACPR of <-33dBc
1st-Side Lobe and <-55dbc 2nd-Side Lobe)
♦ 28.5dB Power Gain
♦ On-Chip Power Detector
♦ External Bias Control for Current Throttleback
♦ +2.7V to +3.6V Single-Supply Operation
♦ 0.5µA Shutdown Mode
♦ Tiny Chip-Scale Package (1.5mm
✕
2.0mm)
MAX2242
2.4GHz to 2.5GHz Linear Power Amplifier
________________________________________________________________ Maxim Integrated Products 1
A3
A4
B4C4
GND
V
CC1
A2
V
CC2
GNDRF_IN
BIAS
CIRCUIT
B2
C2
A1
B1C1
GND
RF_OUTBIAS
C3
PD_OUT
DET
SHDN
V
CCB
3
✕
4 UCSP
Pin Configuration
19-1912; Rev 3; 11/03
EVALUATION KIT
AVAILABLE
Ordering Information
PART TEMP RANGE
PIN-
PACKAGE
TOP
MARK
MAX2242EBC-T -40°C to +85°C3
✕ 4 UCSP AAE
Typical Application Circuit appears at end of data sheet.
Actual Size
1.5mm
✕
2.0mm
UCSP is a trademark of Maxim Integrated Products, Inc.
MAX2242
2.4GHz to 2.5GHz
Linear Power Amplifier
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(V
CC
= +2.7V to +3.6V, f
IN
= 2.4GHz to 2.5GHz, V
SHDN
= V
CC
, RF_IN = RF_OUT = connected to 50Ω load, T
A
= -40°C to +85°C.
Typical values are measured at V
CC
= +3.3V, f
IN
= 2.45GHz, T
A
= +25°C, unless otherwise noted.) (Note 1)
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
CC1
, V
CC2
to GND (no RF signal applied) ..........-0.3V to +5.5V
RF Input Power ...............................................................+10dBm
SHDN, BIAS, PD_OUT, RF_OUT................-0.3V to (V
CC
+ 0.3V)
DC Input Current at RF_IN Port.............................-1mA to +1mA
Maximum VSWR Without Damage ........................................10:1
Maximum VSWR for Stable Operation.....................................5:1
Continuous Power Dissipation (T
A
= +85°C)
3
✕
4 UCSP (derate 80mW/°C above +85°C) ..................1.6W
Operating Temperature Range ...........................-40°C to +85°C
Thermal Resistance .........................................................25°C/W
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +125°C
Lead Temperature (soldering, 10s) .................................+260°C
Continuous Operating Lifetime.....................10yrs × 0.92
(T
A
- 60°C)
(For Operating Temperature, T
A
≥ +60°C)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Supply Voltage 2.7 3.6 V
P
OUT
= +22dBm, V
CC
= +3.3V, idle current = 280mA
300 335
P
OUT
= +13dBm, idle current = 55mA 90
Supply Current
(Notes 2, 3, 6)
P
OUT
= +5dBm, idle current = 25mA 50
mA
Shutdown Supply Current V
SHDN
= 0, no RF input 0.5 10 µA
Logic Input Voltage High 2.0 V
Logic Input Voltage Low 0.8 V
Logic Input Current High -1 5 µA
Logic Input Current Low -1 1 µA
CAUTION! ESD SENSITIVE DEVICE
MAX2242
2.4GHz to 2.5GHz
Linear Power Amplifier
_______________________________________________________________________________________ 3
AC ELECTRICAL CHARACTERISTICS
(MAX2242 Evaluation Kit, V
CC
= +3.3V, V
SHDN
= V
CC
, 50Ω source and load impedance, f
IN
= 2.45GHz, T
A
= +25°C, unless other-
wise noted.) (Note 6)
Note 1: Specifications over T
A
= -40°C to +85°C are guaranteed by design. Production tests are performed at T
A
= +25°C.
Note 2: Idle current is controlled by external DAC for best efficiency over the entire output power range.
Note 3: Parameter measured with RF modulation based on IEEE 802.11b standard.
Note 4: Power gain is guaranteed over this frequency range. Operation outside this range is possible, but is not guaranteed.
Note 5: Output two-tone third-order intercept point (OIP3) is production tested at T
A
= +25°C. The OIP3 is tested with two signals at
f1 = 2.450GHz and f2 = 2.451GHz with fixed P
IN
.
Note 6: Min/max limits are guaranteed by design and characterization.
Note 7: The total turn-on and turn-off times required for PA output power to settle to within 0.5dB of the final value.
Note 8: Excludes PC board loss of approximately 0.15dB.
Note 9: See Typical Operating Characteristics for statistical variation.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Frequency Range (Notes 3, 4) 2.4 2.5 GHz
T
A
= +25°C 26.5 28.5
Power Gain (Notes 1, 3)
T
A
= -40°C to +85°C 25.5
dB
Gain Variation Over Temperature
(Note 3)
T
A
= -40°C to +85°C ±1.2 dB
Gain Variation Over V
CC
(±10%)
(Note 3)
V
CC
= +3.0V to +3.6V ±0.3 dB
Output Power (Notes 3, 5, 8)
ACPR,
1
st-side lobe < -33dBc,
2
nd-side lobe < -55dBc
21.5 22.5 dBm
Saturated Output Power
P
IN
= +5dBm
26.5 dBm
Harmonic Output (2f, 3f, 4f) -40 dBc
Input VSWR Over full P
IN
range 1.5:1
Output VSWR Over full P
OUT
range 2.5:1
Power Ramp Turn-On Time
(Note 7)
SHDN from low to high 1 1.5 µs
Power Ramp Turn-Off Time
(Note 7)
SHDN from high to low 1 1.5 µs
RF Output Detector Response
TIme
2.5 5 µs
P
o
= +22dBm (Note 9) 1.8
P
o
= +13dBm (Note 9) 0.9
RF Output Detector Voltage
P
o
= +5dBm (Note 9) 0.55
V
P1-P3P4-P6P7-P9

MAX2242EBC+T

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Buy MAX2242EBC+T
Manufacturer:
Maxim Integrated
Description:
RF Amplifier 2.4-2.5GHz Linear Power Amplifie
Lifecycle:
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