Datasheet

(50Ω system impedance, V
AVDD
= V
DVDD
= V
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 V
AVDD
= V
DVDD
= V
PAVDD
= +2.7V, T
A
= +25°C, unless otherwise noted.)
-76
-56
-66
-36
-46
-16
-26
-6
+14
+4
+24
FSK SPECTRUM
MAX7057 toc21
(dBm)
100kHz DEVIATION, 4kHz SQUARE-WAVE
MODULATION. SPAN = 1.00MHz
RBW = 10kHz
VBW = 10kHz
VIDEO AVG ON
EFFICIENCY
vs. SUPPLY VOLTAGE
MAX7057 toc20
SUPPLY VOLTAGE (V)
EFFICIENCY (%)
3.33.02.72.4
11
13
15
17
19
21
23
9
2.1 3.6
f
RF
= 433.92MHz
50% DUTY CYCLE
T
A
= +85°C
T
A
= +25°C
T
A
= +125°C
T
A
= -40°C
EFFICIENCY
vs. SUPPLY VOLTAGE
MAX7057 toc19
SUPPLY VOLTAGE (V)
EFFICIENCY (%)
3.33.02.72.4
15
20
25
30
35
10
2.1 3.6
f
RF
= 433.92MHz
PA ON
T
A
= +85°C
T
A
= +125°C
T
A
= +25°C
T
A
= -40°C
EFFICIENCY
vs. SUPPLY VOLTAGE
MAX7057 toc18
SUPPLY VOLTAGE (V)
EFFICIENCY (%)
3.33.02.72.4
13
11
17
21
25
9
15
19
23
2.1 3.6
f
RF
= 315MHz
50% DUTY CYCLE
T
A
= +85°C
T
A
= +125°C
T
A
= +25°C
T
A
= -40°C
EFFICIENCY
vs. SUPPLY VOLTAGE
MAX7057 toc17
SUPPLY VOLTAGE (V)
EFFICIENCY (%)
3.33.02.72.4
15
20
25
30
35
10
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
-10
-4
-6
-8
-2
0
2
4
6
8
10
2.1 2.72.4 3.0 3.3 3.6
FREQUENCY STABILITY
vs. SUPPLY VOLTAGE
MAX7057 toc16
SUPPLY VOLTAGE (V)
FREQUENCY STABILITY (ppm)
f
RF
= 433.92MHz
f
RF
= 315MHz
Maxim Integrated │ 7
www.maximintegrated.com
MAX7057 300MHz to 450MHz Frequency-Programmable
ASK/FSK Transmitter
Typical Operating Characteristics(continued)