MAX2450 Ver la hoja de datos (PDF) - Maxim Integrated
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MAX2450 Datasheet PDF : 8 Pages
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3V, Ultra-Low-Power Quadrature
Modulator/Demodulator
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2450 EV kit, VCC = LO_VCC = ENABLE = 3.0V, fLO = 140MHz, fI_IN/I_IN = fQ_IN/Q_IN = 600kHz, VI_IN/I_IN = VQ_IN/Q_IN = 1.2Vp-p,
fIF_IN = 70.1MHz, VIF_IN = 2.82mVp-p, TA = +25°C, unless otherwise noted.)
PARAMETER
MODULATOR
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Allowable Differential Input Voltage
VI_IN/I_IN,
VQ_IN/Q_IN
(Note 1)
1.35 Vp-p
Input Common-Mode Voltage Range
1.25
1.75
V
I and Q Signal 3dB Bandwidth
BWMOD
15
MHz
VI_IN/I_IN, = VQ_IN/Q_IN = 1.2Vp-p,
IF Differential Output Voltage
VIF_OUT/IF_OUT RL = 200kΩ differential,
65
mVp-p
CL < 5pF differential
IF Output IM3 Level
IM3IF
VI_IN/I_IN = 1.35Vp-p composite
(Note 4)
-60
dBc
IF Output IM5 Level
IM5IF
VI_IN/I_IN = 1.35Vp-p composite
(Note 4)
-60
dBc
Sideband Rejection
38
dBc
Carrier Suppression at Modulator
Output
-36
dBc
Note 1: Guaranteed by design, not tested.
Note 2: fIF_IN = 2 tones at 70.10MHz and 70.11MHz. VIF_IN = 1.41mVp-p per tone.
Note 3: The frequency range can be extended in either direction, but has not been characterized. At higher frequencies, the
modulator IF output amplitude may decrease and distortions may increase.
Note 4: Q_IN/Q_IN ports are terminated. fI_IN/I_IN = 2 tones at 550kHz and 600kHz.
__________________________________________Typical Operating Characteristics
(MAX2450 EV kit, VCC = LO_VCC = ENABLE = 3.0V, fLO = 140MHz, fI_IN/I_IN = fQ_IN/Q_IN = 600kHz, VI_IN/I_IN = VQ_IN/Q_IN = 1.2Vp-p,
fIF_IN = 70.1MHz, VIF_IN = 2.82mVp-p, TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. TEMPERATURE
7.0
6.8
VCC = 3.3V
6.6
6.4
VCC = 3.0V
6.2
6.0
VCC = 2.7V
5.8
5.6
5.4
5.2
5.0
0 10 20 30 40 50 60 70 80
TEMPERATURE (°C)
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
12
10
VCC = 3.3V
8
6
VCC = 3.0V
4
2
VCC = 2.7V
0
0 10 20 30 40 50 60 70 80
TEMPERATURE (°C)
MODULATOR IF OUTPUT
vs. BASEBAND INPUT
-30
-34
-38
-42
-46
dBVRMS
-50
Vp-p = 2 2 x 10 20 (V)
-54
-26 -22 -18 -14 -10 -6
BASEBAND INPUT (dBVRMS)
_______________________________________________________________________________________ 3
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