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Low-Voltage IF Transceiver with
Limiter/RSSI and Quadrature Modulator
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2510 test fixture; V CC = +3.0V; RXEN = TXEN = low; 0.01μF across CZ and CZ ; MIXOUT tied to VREF through 165 ? resistor;
TXOUT and TXOUT loaded with 100 ? differential; LO terminated with 50 ? , LO AC grounded; GC open; LIMOUT, LIMOUT are AC
coupled to 250 ? load; 330pF at RSSI pin; 0.1μF connected from VREF pin to GND; P RXIN, RXIN = -30dBm differentially driven (input
matched); f RXIN, RXIN = 240MHz; bias voltage at I, I , Q, Q = 1.4V; V I,Q = 500mVp-p; f I,Q = 200kHz; f LO, LO = 230MHz; P LO = -13dBm;
T A = +25°C; unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
LIMITING AMPLIFIER AND RSSI (RXEN = high, f LIMIN = 10MHz, P LIMIN = -30dBm from 50 ? source, unless otherwise noted)
Limiter Output Voltage Swing
Phase Variation
Minimum Linear RSSI Range
Minimum Monotonic RSSI Range
RSSI Slope
LIMOUT, LIMOUT
-75dBm to 5dBm
-75dBm to 5dBm
-85dBm to 5dBm
-75dBm to 5dBm from 50 ?
±270
±300
±4.5
80
90
20
±350
mV
degrees
dB
dB
mV/dB
RSSI Maximum Zero-Scale Intercept (Note 6)
-86
dBm
RSSI Relative Error (Notes 6, 7)
Minimum-Scale RSSI Voltage
Maximum-Scale RSSI Voltage
T A = +25°C
T A = -40°C to +85°C (Note 3)
At LIMIN input of -75dBm
At LIMIN input of +5dBm
±0.5
0.25
1.8
±2.0
±3.0
dB
V
V
TRANSMITTER (TXEN = high)
Frequency Range
I, I , Q, Q Allowable Common-Mode
Voltage Range
(Note 8)
I, I , Q, Q inputs are 250mVp-p centered around
this voltage, GC = 2.0V (Note 9)
I, Q are 500mVp-p while I , Q are held at this DC
voltage (Note 9)
100
1.3
1.4
600
V CC -
1.2
V CC -
1.3
MHz
V
GC = 0.5V
-41
Output Power
GC = open
GC = 2.0V (Note 9)
T A = +25°C
T A = -40°C to +85°C
-2.5
-3
-16
1
dBm
I, I , Q, Q 1dB Bandwidth
Unwanted Sideband Suppression
LO Rejection
Output IM3 Level
Output IM5 Level
(Note 3)
90° phase difference between I and Q inputs;
GC = 2V
90° phase difference between I and Q inputs;
measured to fundamental tone; GC = 2V
GC = 0.5V (Note 11)
GC = 2V (Note 11)
GC = 2V (Note 11)
70
30
30
80
40
44
-49
-33
-51
MHz
dBc
dBc
dBc
dBc
Note 1: This pin is internally terminated to approximately 1.35V through the specified resistance.
Note 2: Downconverter gain is typically greater than 20dB. Operation outside this frequency range is possible but has not been
characterized.
Note 3: Guaranteed by design and characterization.
_______________________________________________________________________________________
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