Datasheet

6 Maxim Integrated
280MHz to 450MHz Programmable
ASK/FSK Transmitter
MAX7060
AC ELECTRICAL CHARACTERISTICS (3V OPERATION)
(Typical Application Circuit, 50I system impedance, tuned for 315MHz to 434MHz operation. V
DD5
= V
GPOVDD
= V
AVDD
=
V
DVDD
= V
PAVDD
= 2.1V to 3.6V, f
RF
= 280MHz to 450MHz, f
XTAL
= 15MHz to 16MHz, T
A
= -40NC to +125NC, unless oth-
erwise noted. Typical values are at V
DD5
= V
GPOVDD
= V
AVDD
= V
DVDD
= V
PAVDD
= 2.7V, T
A
= +25NC, PA matched for
optimum output power, unless otherwise noted. All min and max values are 100% tested at T
A
= +125NC and guaranteed by design
and characterization over temperature, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
GENERAL CHARACTERISTICS
Frequency Range 280 450 MHz
Power-On Time t
ON
ENABLE low-to-high transition, frequency
settled to within 50kHz of the desired car-
rier (includes time for V
PAVOUT
to settle)
120
Fs
ENABLE low-to-high transition, frequency
settled to within 5kHz of the desired carrier
(includes time for V
PAVOUT
to settle)
200
Maximum Data Rate
(PApwr = 0x19)
ASK mode
(no shaping)
Manchester encoded 50
kbps
Nonreturn to zero 100
FSK mode
Manchester encoded 70
Nonreturn to zero 140
Carrier-Frequency Switching
Time
Time from end of SPI write or change of
FREQ0, FREQ1, or FREQ2 pins, to
frequency settled to within 5kHz of desired
carrier
60
Fs
PLL
VCO Gain K
VCO
340 MHz/V
PLL Phase Noise
f
RF
= 315MHz
10kHz offset -78
dBc/Hz
1MHz offset -97
f
RF
= 433.92MHz
10kHz offset -74
1MHz offset -97
Loop Bandwidth 300 kHz
Reference Frequency Input Level 500 mV
P-P
Frequency Divider Range 19 28
CRYSTAL OSCILLATOR
Frequency Deviation (FSK)
Q2 Q100
kHz
Crystal Frequency f
XTAL
15
to 16
MHz
Frequency Pulling by Power
Supply
4 ppm/V
Crystal Load Capacitance
(Note 3)
10 pF
POWER AMPLIFIER
Output Transmit Power (Note 1) P
OUT
V
PAVDD
= 2.1V, PApwr = 0x1E +10
dBmV
PAVDD
= 3.6V, PApwr = 0x1E +15
PApwr
= 0x00 -14.5
Power-Control Step Size 0.95 dB
Modulation Depth (Note 1) 70
dB