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Complete Single-Conversion
Television Tuner
AC ELECTRICAL CHARACTERISTICS
(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
RF INPUT TO IFOUT1 OUTPUT
47
68
Operating Frequency Range
(see Table 7)
Gain specification met across these
frequency bands
174
230
MHz
470
862
Output Frequency
Analog channel PIX carrier
Digital channel center frequency
38.9
36
MHz
Voltage Gain
Source impedance
= 75 Ω , load
impedance = 200 Ω
Maximum gain
(V RAVGC = 3V)
Minimum gain
(V RAVGC = 0.5V)
33
41
-10
49
dB
Input Return Loss
Noise Figure
Input IP2 (In-Band and Out-of-Band Tones)
Selected channel
Maximum gain (V RFAGC = 3V)
Maximum gain (V RFAGC = 3V)
At 12.5dB of gain
10
4.9
20
30
dB
dB
dBm
Input IP3 (In-Band and Out-of-Band Tones)
Input P 1dB
Beats Within Output
Maximum gain (V RFAGC = 3V)
At 12.5dB of gain
Maximum gain (V RFAGC = 3V)
At 12.5dB of gain
0dBmV PIX carrier level
10
-10
-38
-5
-40
dBm
dBm
dBc
VHF input, 140MHz to 500MHz
-60
Beats, Converted to Output
Gain Flatness
Isolation
Port-to-Port Isolation
VHF input, 500MHz to 1400MHz
UHF input, 950MHz to 1400MHz
47MHz to 54MHz
5MHz to 50MHz, RF input to IF output,
relative to desired channel
Isolation between RF input ports at 215MHz
-50
-60
60
27
2.5
dBc
dB P-P
dBc
dB
Image Rejection
Spurious Leakage at RF Input
Measured at 77.8MHz above desired
channel’s center frequency
5Hz to 65MHz
65MHz to 878MHz
57
70
-40
-40
dBc
dBmV
1kHz
-80
Phase Noise (Single-Sideband)
Output Return Loss
10kHz offset
100kHz offset (1.5kHz loop bandwidth)
1MHz offset (1.5kHz loop bandwidth)
Balanced 50 Ω load
-85
-105
-125
20
dBc/Hz
dB
IF VARIABLE-GAIN AMPLIFIER
Input Impedance
Output Impedance
Balanced
Balanced (Note 1)
2000
300
Ω
Ω
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