User guide
MAX3540
Complete Single-Conversion Television Tuner
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PARAMETER CONDITIONS MIN TYP MAX UNITS
RF INPUT TO IFOUT1_ OUTPUT
VHF_IN, LPF enabled, INPT = 00 54 100
VHF_IN, LPF disabled, INPT = 01 100 300
Operating Frequency Range
(See Table 7)
UHF_IN, INPT = 10 300 860
MHz
Analog channel PIX carrier 45.75
Output Frequency
Digital channel center frequency 44
MHz
Maximum gain, V
RFAGC
= 3V,
54MHz to 860MHz
34
Maximum gain, V
RFAGC
= 3V,
broadcast channels
28.0 34 45.5
Voltage Gain
Source impedance =
75
Ω, load impedance =
200
Ω
M i ni m um g ai n, V
R FA GC
= 0.5V -11
dB
VHF_IN 54 300
Operating Frequency Range
Gain specification met
across these frequency
bands
UHF_IN 300 860
MHz
Input Return Loss Worst case, selected channel 8 dB
Noise Figure Maximum gain, V
RFVGC
= 3V (Note 1) 4.4 dB
Maximum gain, V
RFVGC
= 3V 15
Input IP2
(In-Band and Out-of-Band Tones)
At 12.5dB of gain 29
dBm
Maximum gain, V
RFVGC
= 3V -13
Input IP3
(In-Band and Out-of-Band Tones)
At 12.5dB of gain 5 11
dBm
Maximum gain, V
RFVGC
= 3V -24.5
Input P
1dB At 12.5dB of gain, CW tone at f
C
- 36MHz, tested at Ch
69 in UHF band
-3
dBm
Beats Within Output 0dBmV PIX carrier level (Note 1) -60 dBc
VHF_IN from 150MHz to 960MHz -60
VHF_IN from 960MHz to 1400MHz -40Beats, Converted to Output
UHF_IN from 600MHz to 1400MHz -40
dBc
Gain Flatness 54MHz to 60MHz 1.5 dB
P-P
Isolation
5MHz to 50MHz, RF input to IF output, relative to desired
channel
60 dBc
Port-to-Port Isolation Isolation between RF input ports at 215MHz 30 dB
54MHz to 860MHz 70
Image Rejection
Measured at 91.5MHz
above desired channel’s
center frequency
Broadcast channels,
T
A
= +25°C
66
dBc
5MHz to 65MHz -40
Spurious Leakage at RF Input
65MHz to 878MHz -40
dBmV
10kHz offset -85
100kHz offset, 1.5kHz loop bandwidth -105Phase Noise (Single-Sideband)
1MHz offset, 1.5kHz loop bandwidth -125
dBc/Hz
Output Return Loss Balanced 50Ω load 9 dB
AC ELECTRICAL CHARACTERISTICS
(MAX3540 Evaluation Kit, V
CC
= +3.1V to +3.5V, 75Ω system impedance, default register settings, V
RFAGC
= V
IFAGC
= +3V (minimum
attenuation), T
A
= 0°C to +85°C, unless otherwise noted. Typical values are at V
CC
= +3.3V, T
A
= +25°C, unless otherwise noted.)