MAX7057 MAXIM [Maxim Integrated Products], MAX7057 Datasheet - Page 7

• Manufacturer Part Number: MAX7057
• Description: 300MHz to 450MHz Frequency-Programmable ASK/FSK Transmitter
• Manufacturer: MAXIM [Maxim Integrated Products]

(50Ω system impedance, AVDD = DVDD = PAVDD = +2.1V to +3.6V, f
wise noted. Typical values are at AVDD = DVDD = PAVDD = +2.7V, T
300MHz to 450MHz Frequency-Programmable
-10
23
21
19
17
15
13
11
10
25
23
21
19
17
15
13
11
-2
-4
-6
-8
9
8
6
4
2
0
9
_______________________________________________________________________________________
2.1
2.1
2.1
f
50% DUTY CYCLE
f
50% DUTY CYCLE
RF
RF
T
= 433.92MHz
A
= 315MHz
= -40°C
2.4
2.4
2.4
FREQUENCY STABILITY
vs. SUPPLY VOLTAGE
vs. SUPPLY VOLTAGE
vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
EFFICIENCY
f
T
EFFICIENCY
T
RF
A
2.7
2.7
A
2.7
f
RF
= +125°C
= +125°C
= 433.92MHz
= 315MHz
T
A
= -40°C
3.0
3.0
3.0
T
A
= +25°C
T
T
A
A
T
= +85°C
A
= +85°C
3.3
3.3
3.3
= +25°C
Typical Operating Characteristics (continued)
3.6
3.6
3.6
A
RF
= +25°C, unless otherwise noted.)
+24
+14
= 300MHz to 450MHz, T
-16
-26
-36
-46
-56
-66
-76
+4
ASK/FSK Transmitter
35
30
25
20
15
10
-6
35
30
25
20
15
10
2.1
2.1
100kHz DEVIATION, 4kHz SQUARE-WAVE
MODULATION. SPAN = 1.00MHz
f
PA ON
f
PA ON
RF
RF
= 433.92MHz
= 315MHz
2.4
2.4
vs. SUPPLY VOLTAGE
vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
T
FSK SPECTRUM
T
T
A
T
A
A
A
EFFICIENCY
EFFICIENCY
= +125°C
= -40°C
= -40°C
2.7
2.7
= +125°C
3.0
3.0
T
A
A
T
T
T
A
= -40°C to +125°C, unless other-
= +25°C
A
A
= +25°C
= +85°C
= +85°C
3.3
3.3
3.6
3.6
7