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Complete Dual-Band
Quadrature Transmitter
_______________________________________________________________________________________   3
AC ELECTRICAL CHARACTERISTICS
(MAX2369 Evaluation Kit: 50& system, operating modes as defined in Table 6, input voltage at I and Q = 200mV
RMS
differential,
common mode = V
CC
/2, 300kHz quadrature CW tones, IF synthesizer locked with passive lead-lag second-order loop filter, REF =
200mVp-p at 19.44MHz, V
CC
= SHDN = CS = TXGATE = +2.75V, V
BAT
= +2.75V, IF output load = 400&, LOH, LOL input power =
-7dBm, f
LOL
= 1017.26MHz, f
LOH
= 2061.26MHz, IFIN = 125mV
RMS
at 181.26MHz, IS-136 TDMA modulation, f
RFH
= 1880MHz, f
RFL
= 836MHz, T
A
= +25癈, unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
MODULATOR, QUADRATURE MODES (Digital Cellular, Digital PCS, FM IQ)
IF Frequency Range
120235
MHz
I/Q Common-Mode Input
Voltage
V
CC
 = 2.7V to 3.0V (Notes 2, 3, 4)
1.35
V
CC
 / 2
V
CC
 
1.25
V
IF Gain Control Range
VGC = 0.5V to 2.5V, IFG = 100
85
dB
IF Output Power, Digital Mode
VGC = 2.5V, IFG = 100
-10
dBm
Gain Variation Over Temperature    Relative to +25癈, T
A
 = -40癈 to +85癈 (Note 4)
?.8
dB
RX Band Noise Power
VGC = 2.5V, IFG = 100, F
IF
 = 181.26MHz, noise
measured at F
IF
 ?20MHz
-145
dBm/Hz
Carrier Suppression
VGC = 2.5V, IFG = 100
30
49
dB
Sideband Suppression
VGC = 2.5V, IFG = 100
30
38
dB
MODULATOR, FM MODE
IF Gain Control Range
VGC = 0.5V to 2.5V, IFG = 100
85
dB
VGC = 2.5V, IFG = 111, I/Q modulation
-8.5
Output Power
VGC = 2.5V, IFG = 111, direct VCO modulation
-5.5
dBm
UPCONVERTER AND PREDRIVER
IF Frequency Range
120235
MHz
Low-Band Frequency Range
RFL port
8001000
MHz
High-Band Frequency Range
RFH port
17002000
MHz
LOL Frequency Range
8001150
MHz
LOH Frequency Range
14002300
MHz
VGC = 2.5V, NADC modulation, ACPR < -32dBc/
-55dBc at +30kHz/+60kHz offset
5.8
7
Output Power, RFL (Note 4)
VGC = 2.5V, FM mode
9
12
dBm
Output Power, RFH (Note 4)
VGC = 2.6V, NADC modulation, ACPR = -32dB/
-55dBc at +30kHz/+60kHz offset
4
6.6
dBm
Power-Control Range
VGC = 0.5V to 2.5V
30
dB
Gain Variation Over Temperature    Relative to +25癈, T
A
 = -40癈 to +85癈 (Note 4)
?
dB
RFL
-25
RF Image Rejection (Note 4)
RFH
-24
dBc
RFL, VGC = 2.5V
-22
LO Leakage (Note 4)
RFH, VGC = 2.6V
-24
dBm
RFL, VGC = 2.5V
-133
RX Band Noise Power
RFH, VGC = 2.6V
-134
dBm/
Hz
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