Rainbow Electronics MAX7030 - Manual (Page 10)

MAX7030
Low-Cost, 315MHz, 345MHz, and 433.92MHz
ASK Transceiver with Fractional-N PLL
10 ______________________________________________________________________________________
PHASE NOISE vs. OFFSET FREQUENCY
MAX7030 toc31
OFFSET FREQUENCY (Hz)
PHASE NOISE (dBc/Hz)
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-140
f RF = 434MHz
1M 100k 10k 1k 100 10M
REFERENCE SPUR MAGNITUDE
vs. SUPPLY VOLTAGE
MAX7030 toc32
SUPPLY VOLTAGE (V)
REFERENCE SPUR MAGNITUDE (dBc)
3.3 3.0 2.7 2.4
-65
-60
-55
-50
-45
-40
-70
2.1 3.6
434MHz
315MHz
-8
-6
-4
-2
0
2
4
6
8
10
-10
FREQUENCY STABILITY
vs. SUPPLY VOLTAGE
MAX7030 toc33
SUPPLY VOLTAGE (V)
FREQUENCY STABILITY (ppm)
3.3 3.0 2.7 2.4 2.1 3.6
f RF = 434MHz
f RF = 315MHz
Typical Operating Characteristics (continued)
(Typical Operating Circuit, PAV DD = AV DD = DV DD = HV IN = +3.0V, f RF = 433.92MHz, IF BW = 280kHz, 4kbps Manchester encoded,
0.2% BER, T A = +25°C, unless otherwise noted.)
TRANSMITTER