max2841ebc-t Maxim Integrated Products, Inc., max2841ebc-t Datasheet

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max2841ebc-t

Manufacturer Part Number
max2841ebc-t
Description
5ghz Linear Power Amplifiers Integrated Products
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.MAX2841EBC-T.pdf (9 pages)
The MAX2840/MAX2841 low-cost linear power ampli-
fiers (PAs) operate in the 5GHz to 6GHz band. The PAs
are designed for high gain and high linearity, which
makes them ideal for use in IEEE 802.11a OFDM sys-
tems. The MAX2840 delivers +15dBm output power,
and the MAX2841 delivers +18dBm output power.
The devices integrate a power detector that provides
over 15dB dynamic range and ±1.0dB accuracy. With
the detector circuit built in, an automatic level control
(ALC) function can be easily implemented.
The PAs also feature an external bias control function.
The idle current can be adjusted through an external
DAC to improve efficiency at reduced output powers
while maintaining sufficient ACPR and EVM perfor-
mance. As a result, the highest possible efficiency is
maintained at all power levels. The MAX2840/MAX2841
operate over a single +2.7V to +3.6V power-supply
range. An on-chip shutdown feature reduces operating
current to less than 10µA, eliminating the need for an
external supply switch.
The MAX2840/MAX2841 are packaged in a 2mm
1.5mm chip-scale package (UCSP™), which signifi-
cantly minimizes parasitic effects and reduces the
required board area.
19-2494; Rev 2; 8/03
UCSP is a trademark of Maxim Integrated Products, Inc.
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.
RF_IN
BIAS
V
IEEE 802.11a OFDM WLAN
HiperLAN2 WLAN
5GHz Cordless Phones
CC
GND
CIRCUIT
GND
SHDN
________________________________________________________________ Maxim Integrated Products
BIAS
General Description
Functional Diagram
MAX2840
MAX2841
P_DET
GND
DETECTOR
Applications
GND
5GHz Linear Power Amplifiers
RF_OUT

o 5GHz to 6GHz Operating Frequency Range
o High Linear Output Power
o 22dB Power Gain
o On-Chip Detector With 15dB Dynamic Range and
o Simple Input and Output Matching
o +2.7V to +3.6V Single Supply
o Shutdown Mode With Less than 10µA Current
o 2mm
Typical Operating Circuit appears at end of data sheet.
MAX2840EBC-T
MAX2841EBC-T
±1.0dB Detector Accuracy
+15dBm at 5.25GHz (MAX2840)
+18dBm at 5.25GHz (MAX2841)
PART

SHDN
GND
GND
V
A1
A2
A3
A4
1.5mm Chip-Scale Package
CC
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
RF_OUT
CIRCUIT
RF_IN
BIAS
B2
B4
Pin Configuration
PIN-
PACKAGE
3
3
MAX2840
MAX2841


4 UCSP
4 UCSP
Features
P_DET
BIAS
GND
GND
C1
C2
C3
C4
DET
MARK
TOP
AAU
AAT
1

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max2841ebc-t Summary of contents

Page 1

... Detector Accuracy o Simple Input and Output Matching o +2.7V to +3.6V Single Supply o Shutdown Mode With Less than 10µA Current o 2mm  PART  MAX2840EBC-T MAX2841EBC-T Typical Operating Circuit appears at end of data sheet. Applications SHDN RF_OUT GND Features 1.5mm Chip-Scale Package Ordering Information PIN- ...

Page 2

Linear Power Amplifiers ABSOLUTE MAXIMUM RATINGS V to GND ...........................................................-0.3V to +4.2V CC SHDN, BIAS, P_DET, RF_OUT to GND ......-0. RF_IN to GND........................................................-0.3V to +0.9V Input Power ................................................................... +10dBm Max VSWR Without Damage .................................................10:1 Max VSWR for ...

Page 3

AC ELECTRICAL CHARACTERISTICS (continued) = +2.7V to +3.6V, GND = 0V, SHDN = V (MAX2840/MAX2841 EV kits +25°C. Typical values are measured PARAMETER Input VSWR Output VSWR Nonharmonic Spurious Output SHDN from low ...

Page 4

Linear Power Amplifiers = +2.7V to +3.6V, GND = 0V, SHDN = V (MAX2840/MAX2841 EV kits +25°C. Typical values are measured MAX2840 SUPPLY CURRENT vs. OUTPUT POWER 220 200 180 160 140 ...

Page 5

GND = 0V, SHDN = V (MAX2840/MAX2841 EV kits +25°C. Typical values are measured MAX2841 SHUTDOWN CURRENT vs. SUPPLY VOLTAGE 0.30 0. +85°C A 0.20 0.15 T ...

Page 6

Linear Power Amplifiers PIN NAME Shutdown Input. Drive logic low to place the PA in shutdown mode; drive logic high for normal SHDN A1 operation. A2, A4, C2, Ground. Requires a good connection to the circuit board ground plane ...

Page 7

For a DAC capable of sinking current only, set resistors R1 and and connect the DAC directly to the BIAS pin. Use Equation 5 to determine the DAC current required for a given Apply ...

Page 8

Linear Power Amplifiers R1 10k R2 1000pF 10pF 6.8pF T1* RF_IN 1.2pF *T1 = 100 MILS MILS (MAX2840 MILS MILS (MAX2841) **BOARD MATERIAL: FR4, DIELECTRIC THICKNESS: 6 ...

Page 9

For the latest package outline information go to www.maxim-ic.com/packages.) Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim ...

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