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Complete Single-Conversion
Television Tuner
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX3541 EV kit, V CC = +3.1V to +3.5V, T A = -40°C to +85°C, 75 Ω system impedance, default register settings, V RFAGC = V IFAGC =
+3V (minimum attenuation), unless otherwise noted. Typical values are at V CC = +3.3V, T A = +25°C, unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Passband Voltage Gain
Source load =
1.1k Ω ,
output load = 1k Ω
Maximum gain setting
(V IFAGC = 3V)
Minimum gain setting
(V IFAGC = 0.5V)
54
59
63
21
dB
Passband Gain Flatness
Output Voltage
AGC Gain Slope
Equivalent Input Voltage Noise Density
Noise Figure Change vs. Attenuation
IM3
32MHz to 40MHz (Note 1)
V IFAGC = 3V (Note 1)
V IFAGC = 3V to 0.5V (Note 1)
At 36MHz, maximum gain (V IFAGC = 3V)
(Note 1)
V OUT = 1V P-P , 40dB < gain < 60dB (Note 1)
-56
< 0.35
1.2
2.5
27
7.3
dB
V P-P
dB/V
nV/ √ Hz
dB/dB
dBc
IF OVERLOAD DETECTOR (See the IF Overload Detector Section)
Output Overload Attack Point
0.7
V P-P
Attack Point Accuracy
OD REG = 3
±1
dB
Detector Output Voltage Range
Detector Gain
Negative polarity, overload reduces V DET
(open collector, 0.3mA sink)
0.5
70
3.0
V
V/V
FREQUENCY SYNTHESIZER
REFERENCE OSCILLATOR
Frequency
DIVIDERS
RF N-Divider Ratio
RF R-Divider Ratio
LO PHASE DETECTOR AND CHARGE PUMP
256
16
8
32,767
127
MHz
Comparison Frequency
Charge-Pump Current
Charge-Pump Three-State Current
Charge-Pump Compliance Range
Charge-Pump Current Matching
CP = 00
CP = 01
CP = 10
CP = 11
63
0.4
0.5
1
1.5
2
±5
5
250
V CC -
0.4
kHz
mA
nA
V
%
LOCAL OSCILLATOR
VCO Tuning Range
VCO Tuning Gain
Tank frequency
Tank oscillator gain
2200
4400
500
MHz
MHz/V
2-WIRE SERIAL INTERFACE
Clock Frequency
Note 1: Guaranteed by design and characterization.
4
_______________________________________________________________________________________
400
kHz
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