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Low-Cost RF Up/Downconverter
with LNA and PA Driver
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2411A EV kit, V CC = +3.0V, V GC = +2.15V, RXEN = TXEN = low, all measurements performed in 50 ? environment,
f LO = 1.5GHz, P LO = -10dBm, f LNAIN = f PADRIN = f RXMXIN = 1.9GHz, P LNAIN = -32dBm, P PADRIN = P RXMXIN = -22dBm,
f IF, IF = 400MHz, P IF = -32dBm (Note 1), all impedance measurements made directly to pin (no matching network), T A = +25°C,
unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
TRANSMIT MIXER (TXEN = high)
Conversion Gain (Note 1)
Output IP3
T A = +25°C
T A = T MIN to T MAX
(Notes 1, 7)
6.8
5.7
8.5
0.5
9.3
10.4
dB
dBm
Output 1dB Compression Point
LO Leakage
-11.1
-58
dBm
dBm
Noise Figure
IF Frequency
Intermod Spurious Response
(Note 8)
Single sideband
(Notes 2, 5)
F OUT = 2LO-2IF = 2.2GHz
F OUT = 2LO-3IF = 1.8GHz
F OUT = 3LO-6IF = 2.1GHz
8.3
-45.5
-70
-90
450
dB
MHz
dBc
PA DRIVER (TXEN = high)
Gain (Note 2)
Output IP3
T A = +25°C
T A = T MIN to T MAX
(Note 4)
13
12.3
15
18
16.4
17
dB
dBm
Output 1dB Compression Point
Gain-Control Range
6.3
35
dBm
dB
Gain-Control Sensitivity
(Note 9)
12
dB/V
LOCAL-OSCILLATOR INPUTS (RXEN = TXEN = high)
Input Relative VSWR
Receive mode (TXEN = low)
Transmit mode (RXEN = low)
1.10
1.02
POWER MANAGEMENT (RXEN = TXEN = low)
Receiver Turn-On Time (Notes 2, 10)
Transmitter Turn-On Time (Notes 2, 11)
RXEN = low to high
TXEN = low to high
0.5
0.3
2.5
2.5
μs
μs
Note 1: Power delivered to IF SMA connector of MAX2411A EV kit. Power delivered to MAX2411A IC is approximately 1.0dB less
due to balun losses.
Note 2: Guaranteed by design and characterization.
Note 3: Two tones at 1.9GHz and 1.901GHz at -32dBm per tone.
Note 4: Two tones at 1.9GHz and 1.901GHz at -22dBm per tone.
Note 5: Mixer operation guaranteed to this frequency. For optimum gain, adjust output match. See the Typical Operating
Characteristics for graphs of IF port impedance versus IF frequency.
Note 6: At this LO drive level, the mixer conversion gain is typically 1dB lower than with -10dBm LO drive.
Note 7: Two tones at 400MHz and 401MHz at -32dBm per tone.
Note 8: Transmit mixer output at -17dBm.
Note 9: Calculated from measurements taken at V GC = 1.0V and V GC = 1.5V.
Note 10: Time from RXEN = low to RXEN = high transition until the combined receive gain is within 1dB of its final value. Measured
with 47pF blocking capacitors on LNAIN and LNAOUT.
Note 11: Time from TXEN = low to TXEN = high transition until the combined transmit gain is within 1dB of its final value. Measured
with 47pF blocking capacitors on PADRIN and PADROUT.
_______________________________________________________________________________________
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