Instruction Manual

MAX1471
315MHz/434MHz Low-Power, 3V/5V
ASK/FSK Superheterodyne Receiver
_______________________________________________________________________________________ 5
6.0
6.4
6.8
7.2
7.6
8.0
2.4 2.7 3.0 3.3 3.6
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX1471 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
+125°C
+105°C
+85°C
+25°C
-40°C
6.0
6.6
6.4
6.2
6.8
7.0
7.2
7.4
7.6
7.8
8.0
300 325 375350 400 425 450
SUPPLY CURRENT
vs. RF FREQUENCY
MAX1471 toc02
RF FREQUENCY (MHz)
SUPPLY CURRENT (mA)
+125°C
-40°C
+25°C
+105°C
+85°C
0
2
6
4
10
8
12
-40 10-15 35 60 85 110
DEEP-SLEEP CURRENT
vs. TEMPERATURE
MAX1471 toc03
TEMPERATURE (
°
C)
DEEP-SLEEP CURRENT (µA)
100
10
1
0.1
0.01
-123 -121 -119 -117 -115 -113
-111
BIT-ERROR RATE
vs. AVERAGE INPUT POWER (ASK DATA)
MAX1471 toc04
AVERAGE INPUT POWER (dBm)
BIT-ERROR RATE (%)
0.2% BER
f
RF
= 434MHz
f
RF
= 315MHz
280kHz IF BW
100
10
1
0.1
0.01
-115 -110-113 -108 -105
BIT-ERROR RATE
vs. AVERAGE INPUT POWER (FSK DATA)
MAX1471 toc05
AVERAGE INPUT POWER (dBm)
BIT-ERROR RATE
0.2% BER
f
RF
= 434MHz
f
RF
= 315MHz
280kHz IF BW
FREQUENCY DEVIATION = ±50kHz
-120
-117
-111
-114
-105
-108
-102
-40 10-15 35 60 85 110
SENSITIVITY
vs. TEMPERATURE (ASK DATA)
MAX1471 toc06
TEMPERATURE (
°
C)
SENSITIVITY (dBm)
280kHz IF BW
0.2% BER
f
RF
= 434MHz
f
RF
= 315MHz
-112
-110
-106
-108
-104
-102
-40 10-15 35 60 85 110
SENSITIVITY
vs. TEMPERATURE (FSK DATA)
MAX1471 toc07
TEMPERATURE (
°
C)
SENSITIVITY (dBm)
280kHz IF BW
0.2% BER
f
RF
= 434MHz
f
RF
= 315MHz
FREQUENCY DEVIATION = ±50kHz
-98
-112
110100
SENSITIVITY vs. FREQUENCY
DEVIATION (FSK DATA)
-108
-110
MAX1471 toc08
FREQUENCY DEVIATION (kHz)
SENSITIVITY (dBm)
-106
-102
-104
-100
280kHz IF BW
0.2% BER
RSSI vs. RF INPUT POWER
MAX1471 toc09
0
0.2
0.6
0.4
1.2
1.4
1.0
0.8
1.6
RSSI (V)
-130 -90 -70-110
-50
-30 -10 10
RF INPUT POWER (dBm)
AGC HYSTERESIS: 3dB
HIGH-GAIN MODE
LOW-GAIN MODE
AGC SWITCH
POINT
Typical Operating Characteristics
(Typical Application Circuit, AV
DD
= DV
DD
= HV
IN
= +3.0V, f
RF
= 434MHz, T
A
= +25°C, unless otherwise noted.)