Datasheet

315MHz/433MHz ASK Superheterodyne
Receiver with Extended Dynamic Range
Typical Operating Characteristics
( Typical Application Circuit , V
DD
= 3.3V, f
RF
= 315MHz, T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX1473 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
3.53.43.33.23.1
5.0
5.1
5.2
5.3
5.4
5.5
5.6
4.9
3.0 3.6
+105°C
+85°C
+25°C
-40°C
SUPPLY CURRENT
vs. RF FREQUENCY
MAX1473 toc02
RF FREQUENCY (MHz)
SUPPLY CURRENT (mA)
450400350300
5.0
5.5
6.0
6.5
7.0
4.5
250 500
+105°C
+25°C
+85°C
-40°C
100
0.01
-121
-118
-120 -119
-117 -116
-114
BIT-ERROR RATE
vs. AVERAGE RF INPUT POWER
0.1
1
10
MAX1473 toc03
AVERAGE INPUT POWER (dBm)
BIT-ERROR RATE (%)
-115
f
RF
= 433MHz
f
RF
= 315MHz
SENSITIVITY vs. TEMPERATURE
MAX1473 toc04
TEMPERATURE (°C)
SENSITIVITY (dBm)
10080-20 0 20
40
60
-116
-114
-112
-110
-108
-106
-104
-102
-100
-118
-40 120
PEAK RF INPUT POWER
0.2% BER
IF BANDWIDTH = 280kHz
f
RF
= 433MHz
f
RF
= 315MHz
RSSI vs. RF INPUT POWER
MAX1473 toc05
RF INPUT POWER (dBm)
RSSI (V)
-20-40-60-80-100-120
1.2
1.4
1.6
1.8
2.0
2.2
2.4
1.0
-140 0
IF BANDWIDTH = 280kHz
V
AGCDIS
= 0V
V
AGCDIS
= V
DD
RSSI AND DELTA
vs. IF INPUT POWER
MAX1473 toc06
IF INPUT POWER (dBm)
RSSI (V)
-10-30-50-70
1.2
1.4
1.6
1.8
2.0
2.2
2.4
1.0
DELTA (dB)
-2.5
-1.5
-0.5
0.5
1.5
2.5
3.5
-3.5
-90 10
DELTA
RSSI
SYSTEM GAIN vs. FREQUENCY
MAX1473 toc07
IF FREQUENCY (MHz)
SYSTEM GAIN (dB)
252015105
-20
-10
0
10
20
30
-30
030
UPPER
SIDEBAND
LOWER
SIDEBAND
FROM RFIN TO
MIXOUT
f
RF
= 315MHz
50dB IMAGE
REJECTION
IMAGE REJECTION
vs. RF FREQUENCY
MAX1473 toc08
RF FREQUENCY (MHz)
IMAGE REJECTION (dB)
430380330
35
40
45
50
55
30
280 480
f
RF
= 433MHz
f
RF
= 375MHz
f
RF
= 315MHz
IMAGE REJECTION
vs. TEMPERATURE
MAX1473 toc09
TEMPERATURE (°C)
IMAGE REJECTION (dB)
603510-15
41
42
42
43
43
44
44
45
45
41
-40 85
f
RF
= 315MHz
f
RF
= 375MHz
f
RF
= 433MHz
MAX1473
6
Maxim Integrated