MAX1472 datasheet(2/9 Pages) MAXIM

2 / 9 page

300MHz-to-450MHz Low-Power, Crystal-Based

ASK Transmitter

_______________________________________________________________________________________

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.

VDD to GND ..........................................................-0.3V to +4.0V

All Other Pins to GND ................................-0.3V to (VDD + 0.3V)

Continuous Power Dissipation (TA = +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

ELECTRICAL CHARACTERISTICS

(Typical Application Circuit, output power is referenced to 50

Ω, VDD = 2.1V to 3.6V, VENABLE = VDD, TA = -40°C to +125°C, unless

otherwise noted. Typical values are at VDD = 2.7V, TA = +25

°C, unless otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

SYSTEM PERFORMANCE

Supply Voltage

VDD

2.1

3.6

VENABLE = VDD

(Note 2)

5.3

9.2

VENABLE = VDD,

VDATA = VDD

9.1

16.4

fRF = 315MHz

VENABLE = VDD,

VDATA = 0V

1.5

2.1

VENABLE = VDD

(Note 2)

5.7

VENABLE = VDD,

VDATA = VDD

9.6

Supply Current

IDD

fRF = 433MHz

VENABLE = VDD,

VDATA = 0V

1.7

2.5

VENABLE < VIL, TA < +85

°C (Note 3)

350

Standby Current

ISTDBY

VENABLE < VIL TA < +125

°C (Note 3)

1.7

µA

Frequency Range

fRF

(Note 1)

300

450

MHz

Data Rate

(Note 3)

100

kbps

Modulation Depth

ON to OFF POUT ratio (Note 4)

TA = +25

°C, VDD = 2.7V (Notes 8, 9)

7.3

10.3

12.8

TA = +125

°C, VDD = 2.1V (Notes 8, 9)

3.3

6.0

Output Power

POUT

TA = -40

°C, VDD = 3.6V (Notes 8, 9)

13.7

16.2

dBm

To fOFFSET < 50kHz (Note 5)

220

Turn-On Time

tON

To fOFFSET < 5kHz (Note 5)

450

µs

fRF = 315MHz (Note 6)

43.6

Transmit Efficiency with CW

fRF = 433MHz (Note 6)

41.3

fRF = 315MHz (Note 7)

37.6

Transmit Efficiency at 50%

Duty Cycle

fRF = 433MHz (Note 7)

35.1

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