MAX2903EGI Ver la hoja de datos (PDF) - Maxim Integrated
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MAX2903EGI Datasheet PDF : 19 Pages
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200mW Single-Chip Transmitter ICs for
868MHz/915MHz ISM Bands
Typical Operating Characteristics
(MAX290_ EV kits. VCC = +4.5V, fRF = 917.28MHz (MAX2900/MAX2901/MAX2902) or fRF = 868MHz (MAX2903/MAX2904), RRLPF =
68kΩ, RPWRSET = 22kΩ, VASK = VREG, fREF = 14.56MHz (MAX2900/MAX2901/MAX2902) or fREF = 13.78MHz (MAX2903/MAX2904),
chip rate on MODIN = 1.22 Mbps, RF output matching network optimized for +23dBm, VCC = 4.5V, TA = +25°C, unless
otherwise noted.)
160
150
140
130
120
110
100
90
80
2.5
SUPPLY CURRENT vs. VCC
TA = +85°C
TA = +25°C
TA = -40°C
3.0
3.5
4.0
4.5
VCC (V)
SHUTDOWN CURRENT vs. VCC
100
10
1
0.1
2.5
TA = +85°C
TA = +25°C
TA = -40°C
3.0
3.5
4.0
4.5
VCC (V)
OUTPUT POWER vs. VCC
26
24
TA = +85°C
22
TA = +25°C
TA = -40°C
20
18
16
2.5
3.0
3.5
4.0
4.5
VCC (V)
VCO PHASE NOISE AT 917.28MHz
-40dBc/Hz
VCO SUPPLY PUSHING vs. VCC
918.0
100kHz
PLL LOCK TIME
917.5
917.0
916.5
20kHz/div
916.0
915.5
-140dBc/Hz
FREQUENCY OFFSET (MHz)
LOWPASS FILTER 3-dB RESPONSE
vs. RRLPF
3500
3000
2500
2000
1500
1000
500
0
10 20 30 40 50 60 70
RRLPF (kΩ)
915.0
2.5
3.0
3.5
4.0
4.5
VCC (V)
BPSK MODULATION OUTPUT vs. TIME
225deg
45deg/div
-225deg
START 0s
STOP 40μs
-100kHz
START 0s
STOP 30μs
RF POWER vs. FREQUENCY
(MAX2900/MAX2901/MAX2902)
25 A
24 B
C
23
22
21
A: VCC = 4.5V, TA = -40°C
B: VCC = 4.5V, TA = +25°C
C: VCC = 4.5V, TA = +85°C
D: VCC = 2.7V, TA = -40°C
E: VCC = 2.7V, TA = +25°C
F: VCC = 2.7V, TA = +85°C
20
E
D
F
19
18
900 905 910 915 920 925 930
FREQUENCY (MHz)
6 _______________________________________________________________________________________
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