MAX2264 Datasheet, PDF (1/16 Pages) Maxim Integrated Products – 2.7V, Single-Supply, Cellular-Band Linear Power Amplifiers

19-1524; Rev 2; 11/99
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2.7V, Single-Supply, Cellular-Band
Linear Power Amplifiers
General Description
The MAX2264/MAX2265/MAX2266 power amplifiers are
designed for operation in IS-98-based CDMA, IS-136-
based TDMA, and PDC cellular telephones operating in
the 900MHz range. When matched for CDMA operation
and biased with margin over the adjacent and alternate
channel specification (-45dBc/-56dBc), the amplifiers
achieve 28dBm output power with 37% efficiency
(MAX2265). At +16dBm output—a very common power
level for CDMA phones—the MAX2265 still has 7% effi-
ciency, yielding excellent overall talk time. At the same
power level, the MAX2264/MAX2266 have an unprece-
dented 12%/17% efficiency, while still obtaining
32%/32% efficiency at maximum output power.
The MAX2264/MAX2265/MAX2266 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 MAX2264/MAX2265/MAX2266 have excel-
lent gain stability over temperature (±0.8dB), so
overdesign 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 +5V while meeting all ACPR specifications
over the entire temperature range. Nonlinear efficiency
is 48% when matched for linear operation, or 55% when
matched for non-linear-only operation (MAX2265).
The devices are packaged in a 16-pin TSSOP with
exposed pad (EP). For module or direct chip attach
applications, the MAX2264 is also available in die form.
Applications
Cellular-Band CDMA Dual-Mode Phones
Cellular-Band PDC Phones
Cellular-Band TDMA Dual-Mode Phones
Dual-Mode Phones
2-Way Pagers
Power-Amplifier Modules
DEVICE
MAX2264
MAX2265
MAX2266
Selector Guide
POWER-ADDED EFFICIENCY (%)
CDMA AT
+28dBm
CDMA AT
+16dBm
TDMA AT
+30dBm
32
12
—
37
7
42
32
17
—
Features
o Low Average CDMA Current Consumption in
Typical Urban Scenario
55mA (MAX2264)
90mA (MAX2265)
40mA (MAX2266)
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 +5V Single-Supply Operation
o 37% Efficiency at +2.7V Operation
Ordering Information
PART
TEMP. RANGE
PIN-
PACKAGE
MAX2264EUE
MAX2264E/D
MAX2265EUE
MAX2266EUE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
16 TSSOP-EP
Dice*
16 TSSOP-EP
16 TSSOP-EP
TSSOP-EP
5mm x 6.4mm
*Contact factory for dice specifications.
Pin Configurations
TOP VIEW
MAX2264/MAX2266
IN1 1
PWR 2
V_CC 3
BIAS1H 4
V_CC 5
SHDN 6
BIAS2L 7
OUT1 8
16 IN0
15 BIAS2H
14 V_CC
13 GND
12 NFP
11 OUT0
10 BIAS1L
9 OUT1
TSSOP-EP
Pin Configurations continued at end of data sheet.
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