Complete 450MHz Quadrature Transmitter
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2370 EV kit, V CC = +2.7V to +3.3V, SHDN = IDLE = TXGATE = high, V GC = 2.5V, R BIAS = 10k ? , 50 ? system, T A = -40 ° C to
+85 ° C. Typical values are at V CC_ = SHDN = IDLE = TXGATE = CS = 3.0V, f REF = 19.2MHz, LO input power = -15dBm, f LO = 575MHz,
f RFOUT = 455MHz, f IF = 120MHz, registers set according to Table 1, input voltage at I and Q = 130mV RMS differential,
cascade specifications assume 400 ? IF filter with 5dB insertion loss, T A = +25 ° C, unless otherwise noted.) (Note 1)
PARAMETER
Output Power Variation Over
Temperature
CONDITIONS
Relative to +25 ° C, T A = -40 ° C to +85 ° C
MIN
TYP
0, -2
MAX
UNITS
dB
IF PLL
Reference Frequency
Reference Frequency Signal Level
5
0.1
30
0.6
MHz
V P-P
IF Main-Divide Ratio
IF Reference-Divide Ratio
VCO Operating Range
256
2
190 to 390
16,383
2047
MHz
ICP = 00
96
139
174
Charge-Pump Source/Sink
Current
Turbolock Boost Current
ICP = 01
ICP = 10
ICP = 11
ICP = 11, ICP_MAX = 1
135
190
267
533
192
278
390
774
240
348
488
968
μA
μA
Charge-Pump Source/Sink
Current Matching
IF Charge-Pump Compliance
All values of ICP, over compliance range
0.5
6
V CCIFCP -
0.5V
%
V
RF PLL
RF PLL Frequency Range
Reference Frequency
RF Main-Divide Ratio
RF Reference-Divide Ratio
RF PLL operated at 2x LO frequency
5
4096
2
1300
30
262,143
8191
MHz
MHz
RCP = 00
220
325
406
Charge-Pump Source/Sink
Current
Turbolock Boost Current
RCP = 01
RCP = 10
RCP = 11
(Note 5)
441
499
717
1152
650
738
1063
1694
813
923
1329
2118
μA
μA
Charge-Pump Source/Sink
Current Matching
RF Charge-Pump Compliance
Phase-Detector Noise Floor
All values of RCP, over compliance range
RCP = 11, RCP_TURBO1 = RCP_TURBO2 = 0, 50kHz
comparison frequency
0.5
-162
6
V CCRFCP -
0.5V
%
V
dBc/Hz
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Guaranteed by production test at T A = +25 ° C to +85 ° C, design and characterization at T A = -40 ° C.
ACPR is met over the specified V CM range.
V CM must be supplied by the I/Q baseband source with ±8μA current capability.
Guaranteed by design and characterization to 6 σ .
When enabled with RCP_TURBO1 and RCP_TURBO2 (see Tables 3 and 4), the total charge-pump current is specified.
For all values of RCP, the total turbolock current is 1.63 times the corresponding nonturbo current value.
4
_______________________________________________________________________________________
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