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MAX2232EEE+T

P1-P3P4-P6P7-P8
General Description
The MAX2232/MAX2233 low-voltage, silicon RF power
amplifiers (PAs) are designed for use in the 900MHz
ISM band. They operate from a single +2.7V to +5.5V
supply, allowing them to be powered directly from a 3-
cell NiCd or a 1-cell Lithium-Ion battery. The devices
typically deliver 250mW (+24dBm) of output power at
915MHz from a single +3.6V supply, or 150mW
(+22dBm) from a single +2.7V supply. At +24dBm out-
put power, power-added efficiency (PAE) is 44%.
The MAX2232/MAX2233 provide 24dB of gain, which is
adjustable over a continuous 24dB span via the analog
gain-control pin of the MAX2232 or in two 10dB steps
via the 2-bit programmable gain-control DAC of the
MAX2233. An external capacitor sets the RF output
power envelope ramp time, reducing spurious emis-
sions during power-up and power-down by providing a
gradual change in output power (MAX2232).
The MAX2232/MAX2233 feature a low-power shutdown
mode, which typically draws less than 1µA of supply
current, saving power during “idle slots” in time-division
multiple-access (TDMA) systems. The ∆VSWR of the RF
input in shutdown mode relative to normal operation is
1.2:1. The devices also feature a thermal shutdown
function, enabling the PA to protect itself from excessive
temperature conditions that could damage the IC. A
capacitor to ground limits thermal cycling by setting a
thermal shutdown timeout period.
The MAX2232/MAX2233 are available in a space-sav-
ing, thermally enhanced 16-pin power-QSOP (PQSOP)
package.
Applications
900MHz ISM Band
Digital Cordless Phones
Wireless Data
FM Analog Transmitters
868MHz European ISM Band
Features
♦ 800MHz to 1000MHz Frequency Range
♦ 250mW (+24dBm) Output Power at 915MHz from
+3.6V Supply
♦ +2.7V to +5.5V Single-Supply Operation
♦ 44% Power-Added Efficiency
♦ 24dB Power Gain
♦ 24dB Analog Gain-Control Range (MAX2232)
♦ Three Levels of Digitally Programmed Power Gain
in 10dB Steps (MAX2233)
♦ Programmable RF Power Envelope Ramping
(MAX2232)
♦ Thermal Shutdown
♦ Programmable Thermal Shutdown Timeout Period
♦ 0.2µA Low-Power Shutdown Mode
♦ Low ∆VWSR in Standby and Shutdown Modes
MAX2232/MAX2233
900MHz ISM-Band, 250mW Power Amplifiers
with Analog or Digital Gain Control
________________________________________________________________ Maxim Integrated Products 1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
RFIN V
CC
GND
RAMP+ (N.C.)
RAMP- (N.C.)
V
CC
V
CC
TSET
N.C.
TOP VIEW
MAX2232
MAX2233
PQSOP
GND
SHDN (D1)
GND
CTRL (D0)
GND
GND
RFOUT
GROUND OF OUTPUT STAGE CONNECTED TO PACKAGE SLUG.
( ) ARE FOR MAX2233.
19-1470; Rev 1; 6/00
PART
MAX2232EEE
MAX2233EEE
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE PIN-PACKAGE
16 PQSOP
16 PQSOP
Pin Configuration
Ordering Information
Functional Diagrams appear at end of data sheet.
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
MAX2232/MAX2233
900MHz ISM-Band, 250mW Power Amplifiers
with Analog or Digital Gain Control
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(V
CC
= +2.7V to +5.5V, V
CTRL
= +2.2V, V
SHDN
= V
D0
= V
D1
= +2V, T
A
= -40°C to +85°C. No input signal applied, unless otherwise
noted. Typical values are at V
CC
= +3.6V and T
A
= +25°C.)
AC ELECTRICAL CHARACTERISTICS
(MAX2232/MAX2233 Evaluation Kit, V
CC
= +3.6V, V
CTRL
= +2.2V, SHDN = V
CC
(MAX2232), D0 = D1 = V
CC
(MAX2233),
P
RFIN
= 0dBm, ƒ
RFIN
= 915MHz, T
A
= +25°C, unless otherwise noted.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V
CC
to GND...........................................................-0.3V to +6.5V
SHDN, CTRL, D0, D1 to GND ....................-0.3V to (V
CC
+0.3V)
I
RFIN
....................................................................................10mA
RFIN Power (50Ω AC-coupled source). .........................+10dBm
Output Load VSWR. ................................................................6:1
Continuous Power Dissipation (T
A
= +70°C)
16-Pin PQSOP (derate 80mW/°C above +70°C) ................3W
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
V
CTRL
≤ 0.4V (MAX2232)
V
SHDN
= 0.6V,
V
D0
= V
D1
= 0.6V
V
CTRL
= GND
V
SHDN
= GND (MAX2232),
V
D0
= V
D1
= GND (MAX2233)
V
SHDN
= 2.0V (MAX2232),
V
D0
= V
D1
= 2.0V (MAX2233)
MAX2232
SHDN (MAX2232), D0, D1 (MAX2233)
SHDN (MAX2232), D0, D1 (MAX2233)
MAX2232
V
CTRL
= 2.2V
CONDITIONS
1.5
mA20.3 25I
CC
Standby Supply Current
0.2 10
I
CC
V2.7 5.5V
CC
Supply Voltage Range
Shutdown Supply Current
µA
-1.5 1
CTRL Input Current
-1 1I
IL
µA
-1 10I
IH
Logic Input Current
V0.6V
CTRL
CTRL Input for Gain-Control
Mode
V2.0V
IH
Logic Input High
V0.6V
IL
Logic Input Low
V0.4V
CTRL
CTRL Input for Standby Mode
UNITSMIN TYP MAXSYMBOLPARAMETER
µA
120
V
CC
≤ 3.6V
V
CC
= 5.5V
V
CC
= 4.8V
(Notes 1, 2)
D0 = GND, D1 = V
CC
(MAX2233 only)
V
CC
= 3.6V (Note 1)
V
CC
= 3.0V
V
CC
= 2.7V
T
A
= T
MIN
to T
MAX
(Note 1)
CONDITIONS
25.4
dB23.9G
P
MHz902 928ƒ
IN
Frequency Range
Power Gain
dBm15.8P
OUT
Output Power, Medium-Power
Mode
22.9 23.9 24.9
dBm
22.5
21.6
P
OUT
Output Power
dB1.9 3.2∆P
OUT
Output Power Variation Over
Temperature
UNITSMIN TYP MAXSYMBOLPARAMETER
MAX2232/MAX2233
900MHz ISM-Band, 250mW Power Amplifiers
with Analog or Digital Gain Control
_______________________________________________________________________________________ 3
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2232/MAX2233 Evaluation Kit, V
CC
= +3.6V, V
CTRL
= +2.2V, SHDN = V
CC
(MAX2232), D0 = D1 = V
CC
(MAX2233),
P
RFIN
= 0dBm, ƒ
RFIN
= 915MHz, T
A
= +25°C, unless otherwise noted.)
Note 1: Guaranteed by design.
Note 2: Operation outside this range is possible, but not characterized.
Note 3: Gain is monotonic with V
CTRL
.
Note 4: Input VSWR relative to input impedance in operating mode.
Note 5: Harmonics measured on evaluation kit, which provides some harmonic attenuation in addition to the rejection provided by
the IC. The combined suppression is specified.
Note 6: Time measured from SHDN (MAX2232) low-to-high transition to when output power is within 1dB of final value. Includes
effects of 1% tolerance capacitor.
Note 7: Time measured from SHDN (MAX2232) high-to-low transition to when output power is -20dB of final value. Includes effects
of 1% tolerance capacitors.
Note 8: Time from die temperature dropping below Thermal Shutdown Temperature, T
TH
, to when the device turns itself back on.
C
RAMP
= 0.22µF (Notes 1, 6) (MAX2232 only)
(Note 5)
Any load phase angle, P
RFIN
= +5dBm,
T
A
= T
MIN
to T
MAX
V
CC
= +2.7V to +5.5V,
6:1 VSWR at any phase angle,
P
RFIN
= +5dBm
CTRL = GND (MAX2232 only)
SHDN = D0 = D1 = GND
MAX2232 only
0.6V < V
CTRL
< 2.2V (MAX2232 only)
Z
SOURCE
= 50Ω (Note 1)
D0 = V
CC
, D1 = GND (MAX2233 only)
D0 = V
CC
, D1 = GND (MAX2233 only)
D0 = GND, D1 = V
CC
(MAX2233 only)
CTRL adjusted to give P
RFOUT
= +21dBm
(MAX2232 only)
CONDITIONS
ms0.9Autoramping Rise Time
dBc29Harmonic Suppression
6:1
Maximum Output Load VSWR
Without Damage (Note1)
dBc-60
Maximum Nonharmonic
Spurious Output Due to Load
Mismatch
dB
38
52
Off-Isolation
1.2:1∆VSWR
Input VSWR Change, Standby
Mode (Notes 1, 4)
1.4:1∆VSWR
Input VSWR Change, Shutdown
Mode (Notes 1, 4)
1.5:1VSWRInput VSWR
mA44.0I
CC
Supply Current, Low-Power
Mode
mA78.5I
CC
Supply Current, Medium-Power
Mode
%29PAE
Power-Added Efficiency at
+21dBm Output Power
%44PAEPower-Added Efficiency
dB23.6∆G
P
Gain-Control Range (Note 3)
dBm6.5P
OUT
Output Power, Low-Power Mode
UNITSMIN TYP MAXSYMBOLPARAMETER
P
RFIN
= 0dBm, V
CC
= +3.6V
RAMP+ = RAMP- = unconnected (Note 6)
C
RAMP
= 0.22µF (Notes 1, 7) (MAX2232 only)
C
TSET
= 0.22µF (Note 8)
°C145T
TH
Thermal Shutdown Temperature
µs0.4
ms3.2Autoramping Fall Time
Output Power Rise Time
ms900t
TH
Thermal Shutdown Timeout
Period
P1-P3P4-P6P7-P8

MAX2232EEE+T

Mfr. #:
Buy MAX2232EEE+T
Manufacturer:
Maxim Integrated
Description:
RF Amplifier 900MHz ISM-Band 250mW Power Amp
Lifecycle:
New from this manufacturer.
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