Ac electrical characteristics – Rainbow Electronics MAX3541 User Manual
Page 3
MAX3541
Complete Single-Conversion
Television Tuner
_______________________________________________________________________________________
3
AC ELECTRICAL CHARACTERISTICS
(MAX3541 EV kit, V
CC
= +3.1V to +3.5V, T
A
= -40°C to +85°C, 75Ω 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
174
230
Operating Frequency Range
(see Table 7)
Gain specification met across these
frequency bands
470
862
MHz
Analog channel PIX carrier
38.9
Output Frequency
Digital channel center frequency
36
MHz
Maximum gain
(V
RAVGC
= 3V)
33
41
49
Voltage Gain
Source impedance
= 75
Ω, load
impedance = 200
Ω Minimum gain
(V
RAVGC
= 0.5V)
-10
dB
Input Return Loss
Selected channel
10
dB
Noise Figure
Maximum gain (V
RFAGC
= 3V)
4.9
dB
Maximum gain (V
RFAGC
= 3V)
20
Input IP2 (In-Band and Out-of-Band Tones)
At 12.5dB of gain
30
dBm
Maximum gain (V
RFAGC
= 3V)
-10
Input IP3 (In-Band and Out-of-Band Tones)
At 12.5dB of gain
10
dBm
Maximum gain (V
RFAGC
= 3V)
-38
Input P
1dB
At 12.5dB of gain
-5
dBm
Beats Within Output
0dBmV PIX carrier level
-40
dBc
VHF input, 140MHz to 500MHz
-60
VHF input, 500MHz to 1400MHz
-50
Beats, Converted to Output
UHF input, 950MHz to 1400MHz
-60
dBc
Gain Flatness
47MHz to 54MHz
2.5
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
27
dB
Image Rejection
Measured at 77.8MHz above desired
channel’s center frequency
57
70
dBc
5Hz to 65MHz
-40
Spurious Leakage at RF Input
65MHz to 878MHz
-40
dBmV
1kHz
-80
10kHz offset
-85
100kHz offset (1.5kHz loop bandwidth)
-105
Phase Noise (Single-Sideband)
1MHz offset (1.5kHz loop bandwidth)
-125
dBc/Hz
Output Return Loss
Balanced 50
Ω load
20
dB
IF VARIABLE-GAIN AMPLIFIER
Input Impedance
Balanced
2000
Ω
Output Impedance
Balanced (Note 1)
300
Ω