MAX1472 datasheet(4/9 Pages) MAXIM

4 / 9 page

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

ASK Transmitter

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Typical Operating Characteristics

(Typical Application Circuit, VDD = 2.7V, TA = +25°C, unless otherwise noted.)

SUPPLY CURRENT vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

3.2

2.4

2.8

2.0

3.6

VENABLE = VIH,

VDATA = VIH,

fRF = 315MHz

-40

°C

+25

°C

+85

°C

+125

°C

SUPPLY CURRENT vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

3.2

2.8

2.4

1.1

1.2

1.3

1.4

1.5

1.6

1.7

1.8

1.9

2.0

3.6

+85

°C

+125

°C

-40

°C

+25

°C

VENABLE = VIH,

VDATA = VIL,

fRF = 315MHz

SUPPLY CURRENT vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

3.2

2.8

2.4

2.0

3.6

VENABLE = VIH,

VDATA = VIH,

fRF = 433MHz

+25

°C

-40

°C

+125

°C

+85

°C

SUPPLY CURRENT vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

3.2

2.8

2.4

1.2

1.4

1.6

1.8

2.0

2.2

2.0

3.6

+125

°C

-40

°C

VENABLE = VIH,

VDATA = VIL,

fRF = 433MHz

+85

°C

+25

°C

OUTPUT POWER vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

3.2

2.4

2.8

2.0

3.6

VENABLE = VIH,

VDATA = VIH,

fRF = 315MHz

-40

°C

-25

°C

+85

°C

+125

°C

OUTPUT POWER vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

3.2

2.4

2.8

2.0

3.6

VENABLE = VIH,

VDATA = VIH,

fRF = 433MHz

-40

°C

+25

°C

+85

°C

+125

°C

REFERENCE SPUR MAGNITUDE

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

3.2

2.8

2.4

-83

-81

-79

-77

-75

-73

-71

-69

-67

-65

-85

2.0

3.6

315MHz

433MHz

FREQUENCY STABILITY

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

3.2

2.8

2.4

-3

-2

-1

-4

2.0

3.6

433MHz

315MHz

TRANSMIT POWER EFFICIENCY

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

3.2

2.8

2.4

2.0

3.6

+25

°C

+85

°C

+125

°C

-40

°C

CW OUTPUT

fRF = 315MHz

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