Manual
MAX7030
Low-Cost, 315MHz, 345MHz, and 433.92MHz
ASK Transceiver with Fractional-N PLL
_______________________________________________________________________________________ 5
AC ELECTRICAL CHARACTERISTICS (continued)
(Typical Application Circuit, 50Ω system impedance, PAV
DD
= AV
DD
= DV
DD
= HV
IN
= +2.1V to +3.6V, f
RF
= 315MHz, 345MHz, or
433.92MHz, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at PAV
DD
= AV
DD
= DV
DD
= HV
IN
= +2.7V, T
A
= +25°C,
unless otherwise noted.) (Note 1)
Note 1:
Supply current, output power, and efficiency are greatly dependent on board layout and PAOUT match.
Note 2: 100% tested at T
A
= +125°C. Guaranteed by design and characterization overtemperature.
Note 3: 50% duty cycle at 10kHz ASK data (Manchester coded).
Note 4: Guaranteed by design and characterization. Not production tested.
Note 5: Time for final signal detection; does not include baseband filter settling.
Note 6: Efficiency = P
OUT
/ (V
DD
x I
DD
).
Note 7: Dependent on PC board trace capacitance.
Note 8: Input impedance is measured at the LNAIN pin. Note that the impedance at 315MHz includes the 12nH
inductive degeneration from the LNA source to ground. The impedance at 434MHz includes a 10nH induc-
tive degeneration connected from the LNA source to ground. The equivalent input circuit is 50Ω in series
with ~2.2pF. The voltage conversion is measured with the LNA input-matching inductor, the degeneration
inductor, and the LNA/mixer tank in place, and does not include the IF filter insertion loss.
Typical Operating Characteristics
(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.)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX7030 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
3.33.02.72.4
5.8
6.0
6.2
6.4
6.6
6.8
7.0
5.6
2.1 3.6
+85°C
+125°C
+25°C
-40°C
SUPPLY CURRENT vs. RF FREQUENCY
MAX7030 toc02
RF FREQUENCY (MHz)
SUPPLY CURRENT (mA)
425400325 350 375
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
6.0
300 450
+85°C
+125°C
+25°C
-40°C
DEEP-SLEEP CURRENT vs. TEMPERATURE
MAX7030 toc03
TEMPERATURE (°C)
DEEP-SLEEP CURRENT (µA)
1108535 60-10-15
2
4
6
8
10
12
14
16
18
0
-40
V
CC
= +3.6V
V
CC
= +3.0V
V
CC
= +2.1V
RECEIVER
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
CRYSTAL OSCILLATOR
Crystal Frequency f
XTAL
(f
RF
-10.7)
/ 24
MHz
Maximum Crystal Inductance 50 mH
Frequency Pulling by V
DD
2
ppm/V
Crystal Load Capacitance (Note 7) 4.5 pF