MAX2903EGI Ver la hoja de datos (PDF) - Unspecified
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MAX2903EGI Datasheet PDF : 19 Pages
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200mW Single-Chip Transmitter ICs for
868MHz/915MHz ISM Bands
AC ELECTRICAL CHARACTERISTICS
(MAX290_ EV kits. VCC = +2.7V to +4.5V, RRLPF = 68kΩ, RPWRSET = 22kΩ, fRF = 917.28MHz (MAX2900/MAX2901/MAX2902) or fRF
= 868MHz (MAX2903/MAX2904), VASK = VREG, fREF = 14.56MHz (MAX2900/MAX2901/MAX2902) or fREF = 13.62MHz
(MAX2903/MAX2904), chip rate on MODIN = 1.22Mbps, POUT = +23dBm, TA = -40°C to +85°C. Typical values are at VCC = +4.5V,
TA = +25°C, unless otherwise noted.) (Note 1)
PARAMETER
CONDITIONS
MIN -3σ TYP +3σ MAX UNITS
ANALOG INPUT PINS
VTUNE Input Capacitance
VTUNE = +1.35V
15
pF
DIGITAL INPUT PINS
Digital Input Pin Capacitance
3
pF
VCO AND SYNTHESIZERS SECTION
RFOUT Frequency Range
(MAX2900/MAX2901/MAX2902)
(MAX2903/MAX2904)
902
917.28
928
MHz
867
868
870
REFIN Reference Frequency
Range
(MAX2900/MAX2901/MAX2902)
(MAX2903/MAX2904)
14
14.56
15
MHz
13
13.78
14.5
REFDIV Fixed Reference Divider
Ratio
(MAX2900)
4
4
4
Table 4 (MAX2900)
249
256
Main Divider Ratios
(MAX2901/MAX2903)
62
63
PLL Comparison Frequency
(MAX2900)
(MAX2901/MAX2903)
3.5
3.64
3.75
MHz
13
15
VCO Buffer Output Power
300Ω differential load (MAX2901–MAX2904)
-12
d Bm
REFDIV Fixed Reference
Divider Ratio
(MAX2901/MAX2903)
1
1
1
VCO Phase Noise
At 100kHz offset, measured at RFOUT,
PLL loop BW = 5kHz
-101
dBc/Hz
VCO Tuning Gain
(MAX2900/MAX2901/MAX2902)
(MAX2903/MAX2904)
44
65
86
MHz/V
85
VCO Frequency Pulling with
OOK Modulation
OOKIN clocked at 19kHz, internal (crystal)
or external reference frequency
5
kHz RMS
60
kHz peak
PLL Phase Noise
Measured at RFOUT, 5kHz offset,
PLL loop BW = 50kHz
-96
dBc/Hz
REFOUT Voltage Swing
100
mVp-p
CPOUT Charge Pump Current
500
µA
Reference Spurs
-62
d Bc
Reference Input Voltage for
Nominal Operation
Using an external frequency reference
200
300
mV
BPSK, OOK MODULATOR, AND PA
MODIN Frequency Range
1.2
8
Mb/s
Modulation Filter Nominal 3dB
Bandwidth
1
MHz
Modulation Filter Final Attenuation Measured at 30MHz
28
41
dB
Carrier Suppression
28
dB
Noise Power Density
At 960MHz (measured at RFOUT at
+23dBm output power)
-150
dBc/Hz
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