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300MHz-to-450MHz Low-Power,
Crystal-Based ASK Transmitter
Typical Operating Characteristics (continued)
(Typical Application Circuit, V DD = 2.7V, T A = +25°C, unless otherwise noted.)
50
TRANSMIT POWER EFFICIENCY
vs. SUPPLY VOLTAGE
50
TRANSMIT POWER EFFICIENCY
vs. SUPPLY VOLTAGE
45
TRANSMIT POWER EFFICIENCY
vs. SUPPLY VOLTAGE
45
-40°C
+25°C
45
40
-40°C
+25°C
40
-40°C
+25°C
40
35
35
30
25
+85°C
+ 125    °C
CW OUTPUT
f RF = 433MHz
35
30
25
20
+85°C
+ 125    °C
OOK OUTPUT AT
50% DUTY CYCLE
f RF = 315MHz
30
25
20
+85°C
+ 125    °C
OOK OUTPUT AT
50% DUTY CYCLE
f RF = 433MHz
2.0
2.4
2.8
3.2
3.6
2.0
2.4
2.8
3.2
3.6
2.0
2.4
2.8
3.2
3.6
SUPPLY VOLTAGE (V)
PHASE NOISE vs. OFFSET FREQUENCY
SUPPLY VOLTAGE (V)
SUPPLY CURRENT AND OUTPUT POWER
vs. EXTERNAL RESISTOR
SUPPLY VOLTAGE (V)
SUPPLY CURRENT vs. OUTPUT POWER
-40
-50
-60
-70
-80
12
10
8
POWER
CURRENT
MAX1472 toc14
f RF = 315MHz
12
10
8
10
9
8
7
f RF = 315MHz
CW
-90
6
6
6
-100
-110
-120
-130
-140
4
2
0
4
2
0
5
4
3
2
50% DUTY CYCLE
10
100
1k
10k
100k
1M
10M
0.1
1
10
100
1000
0
2
4
6
8
10
f OFFSET (Hz)
FREQUENCY SETTLING TIME
MAX1472 toc16
25kHz/div
EXTERNAL RESISTOR ( ? )
ENABLE
TRANSITION
FROM LOW
TO HIGH
OUTPUT POWER (dBm)
AM DEMODULATION OF PA OUTPUT
MAX1472 toc17
DATA RATE
= 100kHz
2.5kHz/div
START: 0s
1ms
ENABLE
TRANSITION
FROM LOW
TO HIGH
15%/div
START: 0s
1ms
START: 0s
STOP: 20 μ s
5
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相关代理商/技术参数
MAX1473ETJ 制造商:Maxim Integrated Products 功能描述:315MHZ/433MHZ ASK SUPERHETERODYNE RECEIVER WI - Rail/Tube
MAX1473ETJ+ 功能描述:射频接收器 315MHz/434MHz Superheterodyne Rcvr RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel
MAX1473ETJ+T 功能描述:射频接收器 315MHz/434MHz Superheterodyne Rcvr RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel
MAX1473ETJ-T 制造商:Maxim Integrated Products 功能描述:315MHZ/433MHZ ASK SUPERHETERODYNE RECEIVER WI - Tape and Reel
MAX1473EUI 功能描述:射频接收器 RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel
MAX1473EUI/V+ 功能描述:射频接收器 315MHz/434MHz Superheterodyne Rcvr RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel
MAX1473EUI/V+T 功能描述:射频接收器 315MHz/434MHz Superheterodyne Rcvr RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel
MAX1473EUI+ 功能描述:射频接收器 315MHz/434MHz Superheterodyne Rcvr RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel