315MHz/434MHz ASK Superheterodyne

Receiver

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5

Typical Operating Characteristics

(

SUPPLY CURRENT vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

4.5

4.7

4.9

5.1

5.3

5.5

6.6

7.0

6.8

7.2

7.4

7.6

7.8

+105

°C

+125

°C

+85

°C

+25

°C

-40

°C

SUPPLY CURRENT vs. RF FREQUENCY

RF FREQUENCY (MHz)

250

300

350

400

450

500

5.0

5.5

6.0

6.5

7.0

7.5

8.0

8.5

9.0

+105

°C

+125

°C

+85

°C

+25

°C

-40

°C

BIT-ERROR RATE

vs. PEAK RF INPUT POWER

PEAK RF INPUT POWER (dBm)

-130

-125

-120

-115

-110

0.01

0.10

1.00

10.00

100.00

315MHz

433.92MHz

SENSITIVITY vs. TEMPERATURE

TEMPERATURE (

°C)

-40

-15

10

35

60

85

110

-120

-118

-116

-114

-112

-110

-108

-106

-104

-102

433.92MHz

315MHz

RSSI vs. RF INPUT POWER

RF INPUT POWER (dBm)

-140 -120 -100

-80

-60

-40

-20

0

1.00

1.20

1.40

1.60

1.80

2.00

2.20

2.40

IF BANDWIDTH = 280kHz

RSSI AND DELTA vs. IF INPUT POWER

IF INPUT POWER (dBm)

MAX7034 toc06

-25

-20

-15

-10

-5

0

5

10

15

-90 -80 -70 -60 -50 -40 -30 -20 -10

0

10

1.00

1.20

1.40

1.60

1.80

2.00

2.20

2.40

RSSI

DELTA

LNA/MIXER VOLTAGE GAIN

vs. IF FREQUENCY

IF FREQUENCY (MHz)

0

5

10

15

20

25

30

-5

5

15

25

35

45

55

65

UPPER SIDEBAND

LOWER SIDEBAND

49.7dB

IMAGE

REJECTION

IMAGE REJECTION vs. RF FREQUENCY

RF FREQUENCY (MHz)

280 300 320 340 360 380 400 420 440 460 480

0

10

20

30

40

50

60

IMAGE REJECTION vs. TEMPERATURE

TEMPERATURE (

°C)

-40

-15

10

35

60

85

110

40

42

44

46

48

50

52

433.92MHz

315MHz