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Complete SDARS Receiver
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2140 EV kit, current drawn at VOUTANT, I VOUTANT = 150mA max, V CC = 3.1V to 3.6V, VINANT = 3.1V to 5.3V, f RF = 2320MHz
to 2345MHz, f LO = 2076MHz, T A = -40°C to +85°C. Typical values are at V CC = VINANT = 3.3V, f RF = 2338MHz, T A = +25°C, unless
otherwise noted.) (Note 2)
Interstage (IF) 259MHz SAW filter specification: insertion loss = 19dB max, 9.3MHz to 12MHz from center attenuation = 24dB min,
beyond 12MHz from center attenuation = 40dB min.
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
0Hz < f offset < 10kHz
(Note 9)
Synthesized VCO Spurs
VCOspur
10kHz < f offset < 1MHz
(Note 9)
dBc
1MHz < f offset < 10MHz
-47
XTAL Oscillator Frequency
Range
XTALrge
24
49
MHz
XTAL Oscillator Frequency Error
XTALerror
Using an external XTAL (Note 8)
-16
+16
ppm
XTAL Oscillator Input Voltage
XTALswing Using an external TCXO
0.8
V CC
V P-P
XTAL Oscillator Input Duty Cycle
Reference Buffer Output Voltage
Reference Buffer Output Duty
Cycle
Maximum REFOUT Pin Loading
XTALduty
REFV
REFduty
REFOUT_1d
Using an external TCXO
Using the REFOUT pin loading specified
below (Note 4)
Using an external XTAL, not overdriven;
bit RFD = 0, using the REFOUT pin loading
specified below
REFOUT pin frequency = 24MHz
REFOUT pin frequency = 48MHz
47
0.95
45
50
1.10
50
20
8
53
55
%
V P-P
%
pF
TIMING CHARACTERISTICS
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SERIAL INTERFACE (Note 2)
Serial Clock Frequency
f SCL
200
kHz
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
Note 8:
Note 9:
At T A = -40°C, minimum and maximum values are guaranteed by design and characterization.
Minimum and maximum values are guaranteed by design and characterization, unless otherwise noted.
At T A = +25°C, minimum and maximum values are guaranteed by design and characterization.
At T A = +25°C and T A = +85°C, parameters are production tested.
IF AGC reference level is defined as being the required voltage applied on pin AGCPWM, and the corresponding receiver
IF gain, to measure 20mV P-P at each I/Q differential output when the RF input power is -91dBm. If even for zero volts
applied on pin AGCPWM the I/Q differential outputs are below 20mV P-P when the RF input power is -91dBm, then the refer-
ence level is defined as zero volts.
In-band IP2 and IP3 are measured with two CW tones at RF input: f 1 = 2339.55MHz, f 2 = 2339.75MHz.
Out-of-band IP2 and IP3 are measured with two CW tones at RF input: f 1 = 2326.25MHz, f 2 = 2330.25MHz.
Error computed using a crystal with no error.
No spur in the offset frequency range.
6
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