MAX7060ATG/V+ Maxim Integrated Products, MAX7060ATG/V+ Datasheet - Page 26

• Manufacturer Part Number: MAX7060ATG/V+
• Description: RF Transmitter 300MHz to 450MHz Fre quency-and-Output-Po
• Manufacturer: Maxim Integrated Products

Specifications of MAX7060ATG/V+

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

280MHz to 450MHz Programmable
ASK/FSK Transmitter
The MAX7060 can be operated by controlling certain
pins directly, thereby eliminating the need for an SPI
controller. There is a restricted selection of frequency
and power settings, but operation is simpler. The pins
that are used in manual mode are as follows:
Pin 1:
Pins 5, 6, 7: FREQ0, FREQ1, FREQ2
Pin 19:
Pins 20, 21: SDI_PWR1 and SCLK_PWR0 (2-pin power
Pins 22, 23: ENABLE and DIN (PA variable capacitor
setting, data input, enable)
To put the MAX7060 in manual mode, set any of the
FREQ0, FREQ1, FREQ2 pins (5, 6, and 7) to logic-high.
These pins are normally pulled down, so the default
state of the MAX7060 is for SPI operation. The settings in
Table 25 can be made in manual mode.
Table 25. Manual Mode Frequency Selection
Table 26. Manual Mode Frequency Pair Switching
26
LOW FREQUENCY
_____________________________________________________________________________________
315.00
418.00
433.62
315.00
315.00
345.00
390.00
(MHz)
FREQ2
0
0
0
0
1
1
1
1
GPO2_MOD (modulation mode, 0 = ASK,
1 = FSK)
CS_DEV (FSK deviation selection, 0 = Q16kHz,
1 = Q50kHz)
selection)
Manual Mode Settings
HIGH FREQUENCY
433.92
433.92
433.92
390.00
372.00
433.92
433.92
(MHz)
FREQ1
0
0
1
1
0
0
1
1
001 to 111. Set FREQ0 high, shorting FREQ1 and FREQ2, toggling 1 line.
100 to 111. Set FREQ2 high, shorting FREQ1 and FREQ0, toggling 1 line.
010 to 111. Set FREQ1 high, shorting FREQ2 and FREQ0, toggling 1 line.
001 to 011. Set FREQ0 high and FREQ2 low, toggling FREQ1.
001 to 101. Set FREQ1 low and FREQ0 high, toggling pin FREQ2.
110 to 111. Set FREQ2 and FREQ1 high, toggling FREQ0.
011 to 111. Set FREQ1 and FREQ0 high, toggling FREQ2.
FREQ0
0
1
0
1
0
1
0
1
There are seven internally set fractional-N divide ratios
that correspond to commonly used frequencies when a
16MHz crystal is used.
Notice that the MAX7060 can be operated manually at
any single frequency over its 280MHz to 450MHz operat-
ing range by choosing a crystal frequency and one of the
divide ratios from Table 25. For example, a transmitting
frequency of 308MHz can be achieved by selecting the
19.68750 divide ratio and a 15.6444MHz crystal.
The frequency settings in the manual mode of opera-
tion were designed in a way that allows the customer to
toggle only one control line between low and high states
to switch between seven commonly used frequency
pairs (see Table 26).
Reset pin 1 (GPO2_MOD) to 0 for ASK modulation and
1 for FSK modulation. Analog shaping in ASK mode is
enabled by using the ROUT pin. The turn-on and turn-off
time is fixed at approximately 1µs.
FREQ2, FREQ1, FREQ0
FREQUENCY (MHz)
315.00
433.62
390.00
418.00
372.00
345.00
433.92
SPI
ASK or FSK Modulation
Frequency Selection
DIVIDE RATIO
19.68750
27.10125
24.37500
26.12500
23.25000
21.56250
27.12000
N/A