Datasheet
MAX1472
300MHz-to-450MHz Low-Power,
Crystal-Based ASK Transmitter
2
ABSOLUTE MAXIMUM RATINGS
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
DD
to GND ..........................................................-0.3V to +4.0V
All Other Pins to GND ................................-0.3V to (V
DD
+ 0.3V)
Continuous Power Dissipation (T
A
= +70°C)
8-Pin SOT23 (derate 8.9mW/°C above +70°C)............714mW
Operating Temperature Range .........................-40°C to +125°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
ELECTRICAL CHARACTERISTICS
(
Typical Application Circuit
, output power is referenced to 50Ω, V
DD
= 2.1V to 3.6V, V
ENABLE
= V
DD
, T
A
= -40°C to +125°C, unless
otherwise noted. Typical values are at V
DD
= 2.7V, T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SYSTEM PERFORMANCE
Supply Voltage V
DD
2.1 3.6 V
V
ENABLE
= V
DD
(Note 2)
5.3 9.4
V
ENABLE
= V
DD
,
V
DATA
= V
DD
9.1 16.6f
RF
= 315MHz
V
ENABLE
= V
DD
,
V
DATA
= 0V
1.5 2.3
V
ENABLE
= V
DD
(Note 2)
5.7
V
ENABLE
= V
DD
,
V
DATA
= V
DD
9.6
Supply Current I
DD
f
RF
= 433MHz
V
ENABLE
= V
DD
,
V
DATA
= 0V
1.7 2.7
mA
V
ENABLE
< V
IL
, T
A
< +85°C (Note 3) 5 350 nA
Standby Current I
STDBY
V
ENABLE
< V
IL
T
A
< +125°C (Note 3) 1.7 µA
Frequency Range f
RF
(Note 1) 300 450 MHz
Data Rate (Note 3) 0 100 kbps
Modulation Depth ON to OFF P
OUT
ratio (Note 4) 90 dB
T
A
= +25°C, V
DD
= 2.7V (Notes 5, 6) 7.3 10.3 12.8
T
A
= + 125° C , V
D D
= 2.1V ( N otes 5, 6) 3.3 6.0
Output Power P
OUT
T
A
= -40°C, V
DD
= 3.6V (Notes 5, 6) 13.7 16.2
dBm
To f
OFFSET
< 50kHz (Note 7) 220
Turn-On Time t
ON
To f
OFFSET
< 5kHz (Note 7) 450
µs
f
RF
= 315MHz (Note 8) 43.6
Transmit Efficiency with CW
f
RF
= 433MHz (Note 8) 41.3
%
f
RF
= 315MHz (Note 9) 37.6
Transmit Efficiency at 50%
Duty Cycle
f
RF
= 433MHz (Note 9) 35.1
%