MAX2442 Ver la hoja de datos (PDF) - Maxim Integrated
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MAX2442 Datasheet PDF : 12 Pages
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900MHz Image-Reject Receivers
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX242X/MAX246X EV kit, VCC = +3.3V; fLO = 925.7MHz (MAX2440), fLO = 961MHz (MAX2441), fLO = 985MHz (MAX2442),
fRXIN = 915MHz; PRXIN = -35dBm; VLNAGAIN = 2V; VVCOON = VRXON = 2.4V; RXON = MOD = DIV1 = PREGND = GND; TA = +25°C,
unless otherwise noted.)
PARAMETER
OSCILLATOR AND PRESCALER
CONDITIONS
Oscillator Frequency Range
(Notes 5, 10)
Oscillator Phase Noise
Oscillator Pulling
Prescaler Output Level
Oscillator Buffer Output Level
10kHz offset (Note 11)
Standby to RX
Standby mode with PRXIN = -45dBm to
PRXIN = 0dBm (Note 12)
ZL = 100kΩ | | 10pF
DIV1 = 2.4V, ZL = 50Ω
(Note 5)
TA = +25°C
TA = TMIN to TMAX
Required Modulus Setup Time
Divide-by-64/65 mode (Notes 5, 13)
MIN
TYP MAX UNITS
690
1100 MHz
82
dBc/Hz
8
kHz
70
500
-11
-8
-12
mVp-p
dBm
10
ns
Note 5: Guaranteed by design and characterization.
Note 6: Image rejection typically falls to 30dBc at the frequency extremes.
Note 7: Refer to the Typical Operating Characteristics for plots showing receiver gain versus LNAGAIN voltage, input IP3 versus
LNAGAIN voltage, and noise figure versus LNAGAIN voltage.
Note 8: Two tones at PRXIN = -45dBm each, f1 = 915.0MHz and f2 = 915.2MHz.
Note 9: Time delay from RXON = 0.45V to RXON = 2.4V transition to the time the output envelope reaches 90% of its final value.
Note 10: Refers to useable operating range. Tuning range of any given tank circuit design is typically much narrower (refer to Figure 1).
Note 11: Using tank components L3 = 5.0nH (Coilcraft A02T), C2 = C3 = C26 = 3.3pF, R6 = R7 = 10Ω.
Note 12: This approximates a typical application in which a transmitter is followed by an external PA and a T/R switch with finite
isolation.
Note 13: Relative to the rising edge of PREOUT.
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