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MAX7031MATJ50+
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P20
MAX7031
Low-Cost, 308MHz, 315MHz, and 433.92MHz
ASK T
ransceiver with Fractional-N PLL
_______________________________________________________________________________________
7
S11 SMITH PLOT OF RFIN
MAX7031 toc14
434MHz
500MHz
400MHz
INPUT IMPEDANCE
vs. INDUCTIVE DEGENERATION
MAX7031 toc15
INDUCTIVE DEGENERATION (nH)
REAL IMPEDANCE (
Ω
)
10
30
40
50
60
70
80
90
20
IMAGINARY IMPEDANCE (
Ω
)
-280
-270
-260
-250
-240
-230
-220
-290
11
0
0
f
RF
= 315MHz
IMAGINARY
IMPEDANCE
REAL IMPEDANCE
INPUT IMPEDANCE
vs. INDUCTIVE DEGENERATION
MAX7031 toc16
INDUCTIVE DEGENERATION (nH)
REAL IMPEDANCE (
Ω
)
10
30
40
50
60
70
80
90
20
IMAGINARY IMPEDANCE (
Ω
)
-210
-200
-190
-180
-170
-160
-150
-220
11
0
0
f
RF
= 434MHz
IMAGINARY
IMPEDANCE
REAL IMPEDANCE
PHASE NOISE vs. OFFSET FREQUENCY
MAX7031 toc17
OFFSET FREQUENCY (Hz)
PHASE NOISE (dBc/Hz)
1M
100k
10k
1k
-110
-100
-90
-80
-70
-60
-50
-120
100
10M
f
RF
= 315MHz
PHASE NOISE vs. OFFSET FREQUENCY
MAX7031 toc18
OFFSET FREQUENCY (Hz)
PHASE NOISE (dBc/Hz)
1M
100k
10k
1k
-110
-100
-90
-80
-70
-60
-50
-120
100
10M
f
RF
= 434MHz
T
ypical Operating Characteristics (continued)
(
Typical Operating Circuit
, V
PAVDD
= V
AVDD
= V
DVDD
= V
HVIN
= +3.0V, f
RF
= 433.92MHz, IF BW = 280kHz. 4kbps Manchester
encoded, 0.2% BER deviation = ±50kHz, T
A
= +25°C, unless otherwise noted.)
RECEIVER
S11 vs. RF FREQUENCY
MAX7031 toc13
RF FREQUENCY (MHz)
S11 (dB)
450
400
350
300
250
-18
-12
-6
0
-24
200
500
433.92MHz
MAX7031
Low-Cost, 308MHz, 315MHz, and 433.92MHz
FSK T
ransceiver with Fractional-N PLL
8
_______________________________________________________________________________________
T
ypical Operating Characteristics (continued)
(
Typical Operating Circuit
, V
PAVDD
= V
AVDD
= V
DVDD
= V
HVIN
= +3.0V, f
RF
= 433.92MHz, IF BW = 280kHz. 4kbps Manchester
encoded, 0.2% BER deviation = ±50kHz, T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX7031 toc19
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
3.3
3.0
2.7
2.4
10
12
14
16
8
2.1
3.6
f
RF
= 315MHz
T
A
= +85
°
C
T
A
= +125
°
C
T
A
= -40
°
C
T
A
= +25
°
C
SUPPLY CURRENT (mA)
11
13
15
17
9
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX7031 toc20
SUPPLY VOLTAGE (V)
3.3
3.0
2.7
2.4
2.1
3.6
f
RF
= 434MHz
T
A
= +85
°
C
T
A
= +125
°
C
T
A
= -40
°
C
T
A
= +25
°
C
SUPPLY CURRENT vs. OUTPUT POWER
MAX7031 toc21
AVERAGE OUTPUT POWER (dBm)
SUPPLY CURRENT (mA)
6
2
-10
-6
-2
5
6
7
8
9
10
11
12
4
-14
10
f
RF
= 315MHz
SUPPLY CURRENT vs. OUTPUT POWER
MAX7031 toc22
AVERAGE OUTPUT POWER (dBm)
SUPPLY CURRENT (mA)
6
2
-10
-6
-2
5
6
7
8
9
10
11
12
13
14
-14
10
f
RF
= 434MHz
OUTPUT POWER vs. SUPPLY VOLTAGE
MAX7031 toc 23
SUPPLY VOLTAGE (V)
OUTPUT POWER (dBm)
3.3
3.0
2.7
2.4
6
8
10
12
14
4
2.1
3.6
f
RF
= 315MHz
T
A
= +85
°
C
T
A
= +125
°
C
T
A
= +25
°
C
T
A
= -40
°
C
OUTPUT POWER (dBm)
6
8
10
12
14
4
OUTPUT POWER vs. SUPPLY VOLTAGE
MAX7030 toc24
SUPPLY VOLTAGE (V)
3.3
3.0
2.7
2.4
2.1
3.6
T
A
= +85
°
C
T
A
= +125
°
C
T
A
= +25
°
C
T
A
= -40
°
C
f
RF
= 434MHz
EFFICIENCY vs. SUPPLY VOLTAGE
MAX7031 toc25
SUPPLY VOLTAGE (V)
EFFFICIENCY (%)
3.3
3.0
2.7
2.4
25
30
35
40
20
2.1
3.6
T
A
= +85
°
C
T
A
= +125
°
C
T
A
= +25
°
C
T
A
= -40
°
C
f
RF
= 315MHz
EFFICIENCY vs. SUPPLY VOLTAGE
MAX7031 toc26
SUPPLY VOLTAGE (V)
EFFFICIENCY (%)
3.3
3.0
2.7
2.4
25
30
35
40
20
2.1
3.6
T
A
= +85
°
C
T
A
= +125
°
C
T
A
= +25
°
C
T
A
= -40
°
C
f
RF
= 434MHz
TRANSMITTER
MAX7031
Low-Cost, 308MHz, 315MHz, and 433.92MHz
ASK T
ransceiver with Fractional-N PLL
_______________________________________________________________________________________
9
PHASE NOISE vs. OFFSET FREQUENCY
(TRANSMIT MODE)
MAX7031 toc27
OFFSET FREQUENCY (Hz)
PHASE NOISE (d
Bc
/H
z)
1M
100k
10k
1k
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-140
100
10M
f
RF
= 315MHz
PHASE NOISE vs. OFFSET FREQUENCY
(TRANSMIT MODE)
MAX7031 toc28
OFFSET FREQUENCY (Hz)
PHASE NOISE (d
Bc
/H
z)
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-140
f
RF
= 434MHz
1M
100k
10k
1k
100
10M
REFERENCE SPUR MAGNITUDE
vs. SUPPLY VOLTAGE
MAX7031 toc29
SUPPLY VOLTAGE (V)
REFERENCE SPUR MAGNITUDE (dBc)
3.3
3.0
2.7
2.4
-65
-60
-55
-50
-45
-40
-70
2.1
3.6
434MHz
315MHz
-8
-6
-4
-2
0
2
4
6
8
10
-10
FREQUENCY STABILITY
vs. SUPPLY VOLTAGE
MAX7031 toc30
SUPPLY VOLTAGE (V)
FREQUENCY STABILITY (ppm)
3.3
3.0
2.7
2.4
2.1
3.6
f
RF
= 434MHz
f
RF
= 315MHz
T
ypical Operating Characteristics (continued)
(
Typical Operating Circuit
, V
PAVDD
= V
AVDD
= V
DVDD
= V
HVIN
= +3.0V, f
RF
= 433.92MHz, IF BW = 280kHz. 4kbps Manchester
encoded, 0.2% BER deviation = ±50kHz, T
A
= +25°C, unless otherwise noted.)
TRANSMITTER
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P20
MAX7031MATJ50+
Mfr. #:
Buy MAX7031MATJ50+
Manufacturer:
Maxim Integrated
Description:
RF Transceiver 308/315/433.92MHz FSK Transceiver
Lifecycle:
New from this manufacturer.
Delivery:
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EMS
Payment:
T/T
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