Typical operating characteristics – Rainbow Electronics MAX7057 User Manual
Page 5
MAX7057
300MHz to 450MHz Frequency-Programmable
ASK/FSK Transmitter
_______________________________________________________________________________________
5
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX7057 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
3.3
3.0
2.7
2.4
9
10
11
12
13
14
15
16
17
18
8
2.1
3.6
f
RF
= 315MHz
PA ON
T
A
= +25
°C
T
A
= -40
°C
T
A
= +85
°C
T
A
= +125
°C
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX7057 toc02
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
3.3
3.0
2.7
2.4
6
7
8
9
10
11
12
5
2.1
3.6
f
RF
= 315MHz
50% DUTY CYCLE
T
A
= +25
°C
T
A
= -40
°C
T
A
= +85
°C
T
A
= +125
°C
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX7057 toc03
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
3.3
3.0
2.7
2.4
2.5
3.0
3.5
4.0
4.5
5.0
6.0
5.5
2.0
2.1
3.6
f
RF
= 315MHz
PA OFF
T
A
= +25
°C
T
A
= -40
°C
T
A
= +85
°C
T
A
= +125
°C
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX7057 toc04
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
3.3
3.0
2.7
2.4
9
10
11
12
13
14
15
16
17
18
8
2.1
3.6
f
RF
= 433.92MHz
PA ON
T
A
= +25
°C
T
A
= -40
°C
T
A
= +85
°C
T
A
= +125
°C
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX7057 toc05
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
3.3
3.0
2.7
2.4
6
7
8
9
10
11
12
5
2.1
3.6
f
RF
= 433.92MHz
50% DUTY CYCLE
T
A
= +25
°C
T
A
= -40
°C
T
A
= +85
°C
T
A
= +125
°C
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX7057 toc06
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
3.3
3.0
2.7
2.4
3.5
4.0
4.5
5.0
5.5
6.0
7.0
6.5
3.0
2.1
3.6
f
RF
= 433.92MHz
PA OFF
T
A
= -40
°C
T
A
= +85
°C
T
A
= +125
°C
T
A
= +25
°C
Typical Operating Characteristics
(50Ω system impedance, AVDD = DVDD = PAVDD = +2.1V to +3.6V, f
RF
= 300MHz to 450MHz, T
A
= -40°C to +125°C, unless other-
wise noted. Typical values are at AVDD = DVDD = PAVDD = +2.7V, T
A
= +25°C, unless otherwise noted.)
OUTPUT POWER
vs. SUPPLY VOLTAGE
MAX7057 toc07
SUPPLY VOLTAGE (V)
OUTPUT POWER (dBm)
3.3
3.0
2.7
2.4
2
4
6
8
10
14
12
0
2.1
3.6
f
RF
= 315MHz
PA ON
T
A
= +85
°C
T
A
= +125
°C
T
A
= +25
°C
T
A
= -40
°C
OUTPUT POWER
vs. SUPPLY VOLTAGE
MAX7057 toc08
SUPPLY VOLTAGE (V)
OUTPUT POWER (dBm)
3.3
3.0
2.7
2.4
2
4
6
8
10
14
12
0
2.1
3.6
f
RF
= 433.92MHz
PA ON
T
A
= +85
°C
T
A
= +125
°C
T
A
= -40
°C, +25°C
SUPPLY CURRENT AND OUTPUT POWER
vs. EXTERNAL RESISTOR
MAX7057 toc09
EXTERNAL RESISTOR (
Ω)
SUPPLY CURRENT (mA)
OUTPUT POWER (dBm)
1000
100
10
1
2
4
6
8
10
14
12
0
-15
-10
-5
0
5
15
10
-25
-20
0.1
10,000
f
RF
= 315MHz
PA ON
SUPPLY CURRENT
OUTPUT POWER