MAX2235EUP+ by Analog Devices

+3.6V, 1W Autoramping Power Amplifier for 900MHz Applications


The MAX2235 low-voltage, silicon RF power amplifier (PA) is designed for use in the 900MHz frequency band. It operates directly from a single +2.7V to +5.5V supply, making it suitable for use with 3-cell NiCd or 1-cell Li-Ion batteries. The device delivers +30dBm (1W) typical output power from a +3.6V supply or +28dBm from a +2.7V supply. The MAX2235's gain is adjustable over a 37dB range. A power-control pin controls gain and bias to maintain optimum efficiency, even at lower output power levels, thus extending the operating life of the battery. At +30dBm output power, efficiency is typically 47%. An additional power-saving feature is a shutdown mode that typically reduces supply current below 1µA. A key feature of this PA is its autoramping capability. During turn-on and turn-off periods, the RF envelope is controlled to approximate a raised cosine on the rising and falling edge, thereby minimizing transient noise and spectral splatter. The ramp time is set by selecting the value of an external capacitor. The MAX2235 is intended for use in constant envelope applications such as AMPS, two-way paging, or FSK-based communications in the 900MHz ISM band. The device is available in a thermally enhanced 20-pin TSSOP package with a heat slug.

Where to Buy

Prices starting from US$2.97

Distributor Stock
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RS
from US$3.79
3
in stock
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Logo for Analog Devices
Analog Devices
from US$2.97
8,392
in stock
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element14
from US$3.55
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Farnell
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Newark Electronics
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Features

800MHz to 1000MHz Operation
High Output Power at 836MHz +32.5dBm at +5.0V +30dBm at +3.6V +29dBm at +3.0V +28dBm at +2.7V
+32.5dBm at +5.0V
+30dBm at +3.6V
+29dBm at +3.0V
+28dBm at +2.7V
+2.7V to +5.5V Single-Supply Operation
Automatic Power-Up/Power-Down Ramp
Direct On/Off Keying (OOK) without Intersymbol Interference or VCO Pulling
37dB Power-Control Range
47% Efficiency
< 1µA Supply Current in Shutdown Mode
Small 20-Pin TSSOP Package with Heat Slug

Specifications

Frequency (MHz) (min) 800
Frequency (MHz) (max) 1000
POUT (dBm) 30
Efficiency (%) 47
Low Power Shutdown Yes
Footprint (mm x mm) 6.4 x 6.5
Package/Pins TSSOP/20
BudgetaryPrice (See Notes) 2.41


MAX2235EUP+ Amplifiers & Comparators by Analog Devices

IC POWER AMP 900MHZ 20TSSOP

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Supply Voltage Range 2.7V to 5.5V
No. of Pins 20Pins
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)
Base Number 2235
Frequency Max 1GHz
Frequency Min 800MHz
Frequency Range 800MHz to 1GHz
Gain 26dB
Operating Temperature Range -40°C to +85°C
Power Dissipation Pd 6.4W
RF IC Case Style TSSOP
RF Type Cellular ISM
Supply Current 315mA
Supply Voltage Max 5.5V
Supply Voltage Min 2.7V

Alternative Descriptions

+3.6V, 1W Autoramping Power Am | Analog Devices
RF POWER AMP 1GHZ 5.5V | RS
IC, POWER AMP, 900MHZ, 20TSSOP | Farnell
Ic, Power Amp, 900Mhz, 20Tssop | Newark Electronics

Frequently Asked Questions

Where can I find additional details, specifications and documents for a MAX2235EUP+ ?

Additional datasheets, footprints and schematics for MAX2235EUP+ are listed on our Part Details page. You can also find images and similar parts to MAX2235EUP+ on this page.

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Is the MAX2235EUP+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX2235EUP+ have stock available?

Authorised distributors including Analog Devices, RS, element14, Farnell and Newark Electronics have stock available or on a lead time for MAX2235EUP+ .

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