MAX2601_08 Datasheet, PDF (1/6 Pages) Maxim Integrated Products – 3.6V, 1W RF Power Transistors for 900MHz Applications

19-1185; Rev 3; 9/08
EVAALVUAAILTAIOBNLEKIT
3.6V, 1W RF Power Transistors
for 900MHz Applications
General Description
The MAX2601/MAX2602 are RF power transistors opti-
mized for use in portable cellular and wireless equipment
that operates from three NiCd/NiMH cells or one Li-Ion
cell. These transistors deliver 1W of RF power from a
3.6V supply with efficiency of 58% when biased for con-
stant-envelope applications (e.g., FM or FSK). For NADC
(IS-54) operation, they deliver 29dBm with -28dBc ACPR
from a 4.8V supply.
The MAX2601 is a high-performance silicon bipolar RF
power transistor. The MAX2602 includes a high-
performance silicon bipolar RF power transistor, and a
biasing diode that matches the thermal and process
characteristics of the power transistor. This diode is
used to create a bias network that accurately controls
the power transistor’s collector current as the tempera-
ture changes.
The MAX2601/MAX2602 can be used as the final stage
in a discrete or module power amplifier. Silicon bipolar
technology eliminates the need for voltage inverters
and sequencing circuitry, as required by GaAsFET
power amplifiers. Furthermore, a drain switch is not
required to turn off the MAX2601/MAX2602. This
increases operating time in two ways: it allows lower
system end-of-life battery voltage, and it eliminates the
wasted power from a drain-switch device.
The MAX2601/MAX2602 are available in thermally
enhanced, 8-pin SO packages, which are screened to
the extended temperature range (-40°C to +85°C).
____________________________Features
♦ Low Voltage: Operates from 1 Li-Ion or
3 NiCd/NiMH Batteries
♦ DC-to-Microwave Operating Range
♦ 1W Output Power at 900MHz
♦ On-Chip Diode for Accurate Biasing (MAX2602)
♦ Low-Cost Silicon Bipolar Technology
♦ Does Not Require Negative Bias or Supply Switch
♦ High Efficiency: 58%
PART
MAX2601ESA
MAX2602ESA
Ordering Information
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
8 SOIC
8 SOIC
________________________Applications
Narrow-Band PCS (NPCS)
915MHz ISM Transmitters
Microcellular GSM (Power Class 5)
AMPS Cellular Phones
Digital Cellular Phones
Two-Way Paging
CDPD Modems
Land Mobile Radios
TOP VIEW
Pin Configurations
C1
E2
E3
B4
MAX2601
PSOPII
8 C C1
7 E E2
6 E BIAS 3
5 B B4
8C
7E
6E
5B
MAX2602
PSOPII
Typical Application Circuit appears at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
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or visit Maxim’s website at www.maxim-ic.com.