200mW Single-Chip Transmitter ICs for
868MHz/915MHz ISM Bands
MAX2900–MAX2904
AC ELECTRICAL CHARACTERISTICS
(MAX290_ EV kits. V
CC
= +2.7V to +4.5V, R
RLPF
= 68kΩ, R
PWRSET
= 22kΩ, f
RF
= 917.28MHz (MAX2900/MAX2901/MAX2902) or f
RF
= 868MHz (MAX2903/MAX2904), VASK = VREG, f
REF
= 14.56MHz (MAX2900/MAX2901/MAX2902) or f
REF
= 13.62MHz
(MAX2903/MAX2904), chip rate on MODIN = 1.22Mbps, P
OUT
= +23dBm, T
A
= -40°C to +85°C. Typical values are at V
CC
= +4.5V,
T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
ANALOG INPUT PINS
VTUNE Input Capacitance
DIGITAL INPUT PINS
Digital Input Pin Capacitance
VCO AND SYNTHESIZERS SECTION
RFOUT Frequency Range
REFIN Reference Frequency
Range
REFDIV Fixed Reference Divider
Ratio
Main Divider Ratios
PLL Comparison Frequency
VCO Buffer Output Power
REFDIV Fixed Reference
Divider Ratio
VCO Phase Noise
VCO Tuning Gain
VCO Frequency Pulling with
OOK Modulation
PLL Phase Noise
REFOUT Voltage Swing
CPOUT Charge Pump Current
Reference Spurs
Reference Input Voltage for
Nominal Operation
MODIN Frequency Range
Modulation Filter Nominal 3dB
Bandwidth
Modulation Filter Final Attenuation Measured at 30MHz
Carrier Suppression
Noise Power Density
At 960MHz (measured at RFOUT at
+23dBm output power)
28
Using an external frequency reference
200
(MAX2900/MAX2901/MAX2902)
(MAX2903/MAX2904)
(MAX2900/MAX2901/MAX2902)
(MAX2903/MAX2904)
(MAX2900)
Table 4 (MAX2900)
(MAX2901/MAX2903)
(MAX2900)
(MAX2901/MAX2903)
300Ω differential load (MAX2901–MAX2904)
(MAX2901/MAX2903)
At 100kHz offset, measured at RFOUT,
PLL loop BW = 5kHz
(MAX2900/MAX2901/MAX2902)
(MAX2903/MAX2904)
OOKIN clocked at 19kHz, internal (crystal)
or external reference frequency
Measured at RFOUT, 5kHz offset,
PLL loop BW = 50kHz
100
500
-62
300
44
1
902
867
14
13
4
249
62
3.5
13
-12
1
-101
65
85
5
60
-96
86
1
dBc/Hz
MHz/V
kHz RMS
kHz peak
dBc/Hz
mVp-p
µA
dBc
mV
3.64
917.28
868
14.56
13.78
4
928
870
15
14.5
4
256
63
3.75
15
MHz
dBm
MHz
MHz
3
pF
VTUNE = +1.35V
15
pF
CONDITIONS
MIN
-3σ
TYP
+3σ
MAX
UNITS
BPSK, OOK MODULATOR, AND PA
1.2
1
41
28
-150
8
Mb/s
MHz
dB
dB
dBc/Hz
4
_______________________________________________________________________________________
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
