max2235eup Maxim Integrated Products, Inc., max2235eup Datasheet

no-image

max2235eup

Manufacturer Part Number
max2235eup
Description
3.6v, 1w Autoramping Power Amplifier For 900mhz Applications Integrated Products
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.MAX2235EUP.pdf (8 pages)

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Meier Automation Equipment Co., Limited Meier Automation Equipment Co., Limited
Part Number:
MAX2235EUP
Manufacturer:
MAXIM/美信
Quantity:
20 000
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 out-
put 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.
19-1463; Rev 0; 5/99
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
RAMP
SHDN
900MHz ISM-Band Applications
Two-Way Pagers
Analog Cellular Phones
Microcellular GSM (Power Class 5)
Wireless Data Networks
RFIN
NOTE: SOLDER UNDERSIDE OF METAL SLUG TO BOARD GND PLANE.
REF
GC
11
12
19
20
1
BIAS
V
4
CC
VGA
________________________________________________________________ Maxim Integrated Products
V
3
CC
GND
2
V
CC
5
Functional Diagram
General Description
GND
V
CC
8, 9
6, 7, 10
Amplifier for 900MHz Applications
MAX2235
Applications
GND
13, 14, 17, 18, SLUG
+3.6V, 1W Autoramping Power
15, 16
RFOUT
MAX2235EUP
800MHz to 1000MHz Operation
High Output Power at 836MHz
+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
NOTE: THE GROUND OF THE OUTPUT STAGE IS CONNECTED TO THE
UNDERSIDE METAL SLUG.
+32.5dBm at +5.0V
+30dBm at +3.6V
+29dBm at +3.0V
+28dBm at +2.7V
PART
TOP VIEW
RFIN
GND
GND
GND
GND
V
V
V
V
V
CC
CC
CC
CC
CC
TEMP. RANGE
-40°C to +85°C
10
1
2
3
4
5
6
7
8
9
Ordering Information
TSSOP-EP
MAX2235
Pin Configuration
20 TSSOP-EP
PIN-PACKAGE
20
19
18
17
16
15
14
13
12
11
GC
SHDN
GND
GND
RFOUT
RFOUT
GND
GND
REF
RAMP
Features
1

Related parts for max2235eup

Image
Part Number
Description
Manufacturer
Datasheet
Request R
mxd1210
Part Number:
mxd1210
Description:
Nonvolatile Ram Controller Integrated Products
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
MXD1210.pdf (8 pages)
max2986cxv
Part Number:
max2986cxv
Description:
Integrated Powerline Digital Transceiver Integrated Products
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
MAX2986CXV.pdf (28 pages)
ds2065w
Part Number:
ds2065w
Description:
3.3v Single-piece 8mb Nonvolatile Sram Integrated Products
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
DS2065W.pdf (12 pages)
ds1865
Part Number:
ds1865
Description:
Pon Triplexer Control And Monitoring Circuit Integrated Products
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
DS1865.pdf (66 pages)
dg300aa
Part Number:
dg300aa
Description:
Ttl Compatible Cmos Analog Switches Integrated Products
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
DG300AA.pdf (10 pages)
dg421dy
Part Number:
dg421dy
Description:
Improved Low-power, Cmos Analog Switches With Latches Integrated Products
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
DG421DY.pdf (12 pages)
max9789a
Part Number:
max9789a
Description:
Windows Vista-compliant, Stereo Class Ab Speaker Amplifiers And Directdrive Headphone Amplifiers Integrated Products
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
MAX9789A.pdf (26 pages)
max5054bata
Part Number:
max5054bata
Description:
4a, 20ns, Dual Mosfet Drivers Integrated Products
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
MAX5054BATA.pdf (17 pages)
max2003cse
Part Number:
max2003cse
Description:
Nicd/nimh Battery Fast-charge Controllers Integrated Products
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
MAX2003CSE.pdf (20 pages)
max2264eue
Part Number:
max2264eue
Description:
2.7v, Single-supply, Cellular-band Linear Power Amplifiers Integrated Products
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
MAX2264EUE.pdf (16 pages)
max2841ebc-t
Part Number:
max2841ebc-t
Description:
5ghz Linear Power Amplifiers Integrated Products
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
MAX2841EBC-T.pdf (9 pages)
MAX3514EVKIT
Part Number:
MAX3514EVKIT
Description:
Evaluation Kits for the MAX3514
Manufacturer:
Maxim Integrated Products, Inc.
max9722beue
Part Number:
max9722beue
Description:
5v, Differential Input, Directdrive, 130mw Stereo Headphone Amplifiers With Shutdown Products
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
MAX9722BEUE.pdf (20 pages)
DS32C35
Part Number:
DS32C35
Description:
Accurate I2c Rtc With Integrated Tcxo/crystal/fram
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
DS32C35.pdf (22 pages)
ds1863
Part Number:
ds1863
Description:
Ds1863 Burst-mode Pon Controller With Integrated Monitoring
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
DS1863.pdf (61 pages)

max2235eup Summary of contents

Page 1

... 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 PART MAX2235EUP Applications TOP VIEW MAX2235 RFOUT 15, 16 NOTE: THE GROUND OF THE OUTPUT STAGE IS CONNECTED TO THE UNDERSIDE METAL SLUG ...

Page 2

Autoramping Power Amplifier for 900MHz Applications ABSOLUTE MAXIMUM RATINGS V to GND ...........................................................-0.3V to +6.5V CC SHDN to GND.............................................-0. GND .................................................-0. Input Power .................................................+13dBm (20mW) Maximum Load Mismatch without Damage, V ...

Page 3

Amplifier for 900MHz Applications AC ELECTRICAL CHARACTERISTICS (MAX2235 Evaluation Kit unconnected +25°C, unless otherwise noted.) (Note 1) A PARAMETER SYMBOL Operational Frequency Range f RFIN (Note 2) Minimum Output Power P RFOUT Power Added Efficiency ...

Page 4

Autoramping Power Amplifier for 900MHz Applications (MAX2235 Evaluation Kit unconnected, f SUPPLY CURRENT vs. OUTPUT POWER 700 T = -40°C A 600 T = +25° +85°C A 500 400 300 200 100 0 ...

Page 5

Amplifier for 900MHz Applications (MAX2235 Evaluation Kit unconnected, f RISE TIME vs. RAMPING CAPACITANCE 1400 1200 FULL POWER = +10dBm FULL POWER = +20dBm 1000 800 600 400 FULL POWER = +30dBm 200 ...

Page 6

Autoramping Power Amplifier for 900MHz Applications 8.2nH J1 100pF SMA V CC 1000pF 100pF 100pF V CC 1000pF 100pF Detailed Description The MAX2235 power amplifier (PA) operates over a wide frequency ...

Page 7

Amplifier for 900MHz Applications Third Stage (Power Stage) This last stage delivers 30dBm ates in Class E to achieve a high power-added efficien- cy (PAE). Proper output matching is required for optimal output power. The output of ...

Page 8

Autoramping Power Amplifier for 900MHz Applications 8 _______________________________________________________________________________________ Package Information ...

Related keywords