MAX2426 Ver la hoja de datos (PDF) - Maxim Integrated
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MAX2426 Datasheet PDF : 14 Pages
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900MHz Image-Reject Receiver
with Transmit Mixer
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2424/MAX2426 EV kit, VCC = +3.3V, fRXIN = 915MHz, PRXIN = -35dBm, VTXIN = VTXIN = 2.3V (DC bias), VTXIN = 250mVp-p,
fTXIN = 1MHz, VLNAGAIN = 2V, VVCOON = 2.4V, RXON = TXON = MOD = DIV1 = PREGND = GND, TA = +25°C, unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP MAX UNITS
OSCILLATOR AND PRESCALER
Oscillator Frequency Range
(Note 6)
800
1100 MHz
Oscillator Phase Noise
10kHz offset (Note 14)
MAX2424
MAX2426
82
dBc/Hz
72
Oscillator Pulling
Standby to TX or Standby to RX
MAX2424
MAX2426
RX to TX with PRXIN=-45dBm (RX mode) MAX2424
to PRXIN = 0dBm (TX mode) (Note 15) MAX2426
8
35
kHz
70
110
Prescaler Output Level
Oscillator Buffer Output Level
(Notes 6, 14)
ZL = 100kΩ | | 10pF
VDIV1 = 2.4V, ZL = 50Ω,
ZL = 50Ω
TA = +25°C
TA = -40°C to +85°C
500
-11
-8
-12
mVp-p
dBm
Required Modulus Setup Time
(Notes 6, 16)
÷ 64/65 mode
10
ns
Required Modulus Hold Time
(Notes 6, 16)
÷ 64/65 mode
0
ns
Note 6: Guaranteed by design and characterization.
Note 7: Image rejection typically falls to 30dBc at the frequency extremes.
Note 8: Refer to the Typical Operating Characteristics for a plot showing Receiver Gain vs. LNAGAIN Voltage, Input IP3 vs.
LNAGAIN Voltage, and Noise Figure vs. LNAGAIN Voltage.
Note 9: Two tones at PRXIN = -45dBm each, f1 = 915.0MHz and f2 = 915.2MHz.
Note 10: Time delay from VRXON = 0.45V to VRXON = 2.4V transition to the time the output envelope reaches 90% of its final value.
Note 11: Output power typically falls to -10dBm at the frequency extremes.
Note 12: Two tones at VTXIN = 125mVp-p, f1 = 1.0MHz, and f2 = 1.2MHz.
Note 13: Time delay from VTXON = 0.45V to VTXON = 2.4V transition to the time the output envelope reaches 90% of its final value.
Note 14: Using tank components L3 = 5.0nH (Coilcraft A02T), C2 = C3 = C26 = 3.3pF, R6 = R7 = 10Ω.
Note 15: This approximates a typical application in which TXOUT is followed by an external PA and a T/R switch with finite isolation.
Note 16: Relative to the rising edge of PREOUT.
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