MAX3542(2010) Ver la hoja de datos (PDF) - Maxim Integrated
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MAX3542 Datasheet PDF : 20 Pages
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Complete Single-Conversion
Television Tuner
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX3542 EV kit, VCC = +3.1V to +3.5V, TA = 0°C to +70°C, 75Ω system impedance, default register settings, VRFAGC = VIFAGC =
+3V (minimum attenuation), unless otherwise noted. Typical values are at VCC = +3.3V, TA = +25°C, unless otherwise noted.) (Note 1)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Passband Voltage Gain
Passband Gain Flatness
Maximum gain setting
Source load =
(VIFAGC = 3V)
54
59
63
1.1kΩ,
dB
output load = 1kΩ
Minimum gain setting
(VIFAGC = 0.5V)
21
32MHz to 40MHz (Note 2)
1.2
dB
Output Voltage
AGC Gain Slope
Equivalent Input-Voltage Noise Density
VIFAGC = 3V (Note 2)
VIFAGC = 3V to 0.5V (Note 2)
At 36MHz, maximum gain (VIFAGC = 3V)
(Note 2)
2.5
VP-P
27
dB/V
7.3 nV/√Hz
Noise Figure Change vs. Attenuation
< 0.35
IM3
VOUT = 1VP-P, 40dB < gain < 60dB (Note 2) -56
IF OVERLOAD DETECTOR (See the IF Overload Detector Section)
Output Overload Attack Point
0.7
Attack Point Accuracy
OD REG = 3
±1
dB/dB
dBc
VP-P
dB
Detector Output-Voltage Range
Negative polarity, overload reduces VDET
(open collector, 0.3mA sink)
0.5
3.0
V
Detector Gain
FREQUENCY SYNTHESIZER—REFERENCE OSCILLATOR
Frequency
70
V/V
8
MHz
DIVIDERS
RF N-Divider Ratio
RF R-Divider Ratio
LO PHASE DETECTOR AND CHARGE PUMP
256
32,767
16
127
Comparison Frequency
CP = 00
63
500
kHz
0.5
Charge-Pump Current
Charge-Pump Three-State Current
CP = 01
CP = 10
CP = 11
1
mA
1.5
2
±5
nA
Charge-Pump Compliance Range
0.4
VCC -
0.4
V
Charge-Pump Current Matching
5
%
LOCAL OSCILLATOR
VCO Tuning Range
Tank frequency
2200
4400 MHz
VCO Tuning Gain
2-WIRE SERIAL INTERFACE
Clock Frequency
Tank oscillator gain
500 MHz/V
400
kHz
Note 1: Min/max values are production tested at TA = +70°C.
Note 2: Guaranteed by design and characterization.
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