User Manual

MAX7058
315MHz/390MHz Dual-Frequency
ASK Transmitter
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PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
GENERAL CHARACTERISTICS
Frequency Range 300 315/390 450 MHz
ENABLE transition low-to-high, frequency
settled to within 50kHz of the desired carrier
110
Power-On Time t
ON
ENABLE transition low-to-high, frequency
settled to within 5kHz of the desired carrier
250
µs
Manchester encoded 50
Maximum Data Rate
Nonreturn to zero (NRZ) 100
kbps
Frequency Switching Time
Time from low-to-high or high-to-low
transition of FSEL to frequency settled to
within 5kHz of the desired carrier
30 µs
PHASE-LOCKED LOOP (PLL)
VCO Gain K
VCO
320 MHz/V
10kHz offset -87
f
RF
= 315MHz
1MHz offset -98
10kHz offset -84
PLL Phase Noise
f
RF
= 390MHz
1MHz offset -98
dBc/Hz
Loop Bandwidth 600 kHz
Reference Frequency Input Level 500 mV
P-P
Fr eq uency- D i vi d er Rang e 21 26
CRYSTAL OSCILLATOR
Crystal Frequency f
XTAL
15 MHz
Frequency Pulling by V
DD
4 ppm/V
C r ystal Load C ap aci tance (Note 4) 10 pF
AC ELECTRICAL CHARACTERISTICS
( Typical Operating Circuit , 50Ω system impedance, AVDD = DVDD = PAVDD = +2.1V to +3.6V, f
RF
= 315MHz or 390MHz, T
A
=
-40°C to +125°C, unless otherwise noted. Typical values are at AVDD = DVDD = PAVDD = +2.7V, T
A
= +25°C, unless otherwise
noted. All min and max values are 100% tested at T
A
= +125°C, and guaranteed by design and characterization over temperature,
unless otherwise noted.)