19-1185; Rev 2; 5/97
3 .6 V, 1 W RF P o w e r Tra n s is t o rs
fo r 9 0 0 MHz Ap p lic a t io n s
1/MAX602
_______________Ge n e ra l De s c rip t io n
____________________________Fe a t u re s
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.
♦ 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%
The MAX2601 is a high-performance silicon bipolar RF
p owe r tra ns is tor. The MAX2602 inc lud e s a hig h-
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
re q uire d 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.
______________Ord e rin g In fo rm a t io n
PART
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
8 PSOPII
8 PSOPII
Dice*
MAX2601ESA
MAX2602ESA
MAX2602E/D
*Dice are specified at T = +25°C, DC parameters only.
A
The MAX2601/MAX2602 a re a va ila b le in the rma lly
enhanced, 8-pin SO packages, which are screened to
the extended temperature range (-40°C to +85°C). The
MAX2602 is also available in die form.
________________________Ap p lic a t io n s
Narrow-Band PCS (NPCS)
915MHz ISM Transmitters
Microcellular GSM (Power Class 5)
AMPS Cellular Phones
_________________P in Co n fig u ra t io n s
TOP VIEW
C
E
E
B
C
E
8
7
6
5
C
E
E
B
1
2
3
4
8
7
6
5
C
E
E
B
1
2
3
4
Digital Cellular Phones
Two-Way Paging
BIAS
B
CDPD Modems
MAX2601
MAX2602
Land Mobile Radios
PSOPII
PSOPII
Typical Application Circuit appears at end of data sheet.
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
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