Datasheet

MAX7032
CLKOUT SPUR MAGNITUDE
vs. SUPPLY VOLTAGE
MAX7032 toc38
SUPPLY VOLTAGE (V)
CLKOUT SPUR MAGNITUDE (dBc)
3.33.02.72.4
-64
-62
-60
-58
-56
-66
2.1 3.6
f
CLKOUT
= f
XTAL
/8
f
CLKOUT
= f
XTAL
/2
f
CLKOUT
= f
XTAL
/4
f
RF
= 434MHz
CLKOUT SPUR = f
RF
± f
CLKOUT
10pF LOAD CAPACITANCE
Low-Cost, Crystal-Based, Programmable,
ASK/FSK Transceiver with Fractional-N PLL
______________________________________________________________________________________ 11
EFFICIENCY vs. SUPPLY VOLTAGE
MAX7032 toc32
SUPPLY VOLTAGE (V)
EFFICIENCY (%)
3.33.02.72.4
15
20
25
30
10
2.1 3.6
T
A
= +85°C
T
A
= +125°C
T
A
= +25°C
T
A
= -40°C
f
RF
= 315MHz
50% DUTY CYCLE
EFFICIENCY vs. SUPPLY VOLTAGE
MAX7032 toc33
SUPPLY VOLTAGE (V)
EFFICIENCY (%)
3.33.02.72.4
20
25
30
15
2.1 3.6
T
A
= +85°C
T
A
= +125°C
T
A
= +25°C
T
A
= -40°C
f
RF
= 434MHz
50% DUTY CYCLE
PHASE NOISE vs. OFFSET FREQUENCY
MAX7032 toc34
OFFSET FREQUENCY (Hz)
PHASE NOISE (dBc/Hz)
1M100k10k1k
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-140
100 10M
f
RF
= 315MHz
PHASE NOISE
vs. OFFSET FREQUENCY
MAX7032 toc35
OFFSET FREQUENCY (Hz)
PHASE NOISE (dBc/Hz)
1M100k10k1k
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-140
100 10M
f
RF
= 434MHz
REFERENCE SPUR MAGNITUDE
vs. SUPPLY VOLTAGE
MAX7032 toc36
SUPPLY VOLTAGE (V)
REFERENCE SPUR MAGNITUDE (dBc)
3.33.02.72.4
-65
-60
-55
-50
-45
-40
-70
2.1 3.6
433.92MHz
315MHz
FREQUENCY STABILITY
vs. SUPPLY VOLTAGE
MAX7032 toc37
SUPPLY VOLTAGE (V)
FREQUENCY STABILITY (ppm)
3.33.02.72.4
-8
-6
-4
-2
0
2
4
6
8
10
-10
2.1 3.6
f
RF
= 315MHz
f
RF
= 434MHz
Typical Operating Characteristics (continued)
( Typical Application Circuit , V
PAVDD
= V
AVDD
= V
DVDD
= V
HVIN
= +3.0V, f
RF
= 433.92MHz, T
A
= +25°C, IF BW = 280kHz, data rate
= 4kbps Manchester encoded, frequency deviation = ±50kHz, BER = 0.2% average RF power, unless otherwise noted.)
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