MAX3580
Direct-Conversion TV Tuner
_______________________________________________________________________________________ 3
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
170 230
Operating Frequency Range f
RF
Gain specification met across this
frequency band
470 878
MHz
RF_AGC = BB_AGC = +2.85V 74
Overall Voltage Gain (Note 2)
RF_AGC = BB_AGC = +0.5V 26
dB
RF Gain Flatness W i thi n each V H F- III and U H F b and ( N ote 10) -3 +3 dB
Input Return Loss Wor st case acr oss b and sel ected , 75Ω system 7 dB
230MHz 5.4
470MHz 4.7
Noise Figure (DSB) (Notes 3, 4) NF
858MHz 6.5
dB
Broadband (Notes 4, 5) 12
Input 2nd-Order Intercept Point IIP2
Br oad b and , RF_AGC ad j usted for 49d B of g ai n > 26
dBm
Broadband (Notes 4, 6) > -4
Br oad b and , RF_AGC ad j usted for 49d B of g ai n > 12
Narrowband (Notes 4, 7) -15 Input 3rd-Order Intercept Point IIP3
Narrowband, RF_AGC adjusted for 49dB of
gain (Note 7)
3
dBm
P
DESIRED
= -78dBm and converted to
3.75MHz, P
TONE
10MHz higher (Note 4)
-24
RF 1dB Desense
RF_AGC adjusted for 49dB of gain,
P
DESIRED
= -55dBm
-1
dBm
RF i np ut r ang e of 170M H z to 960M H z ( N ote 8) -60
LO Harmonic Reception
RF input range of 960MHz to 1400MHz > -40
dBc
RF Channel Flatness
8MHz RF channel at baseband, tested at
169MHz and 469MHz
-1 +1 dB
Isolation
DC to 30MHz, RF input to baseband output,
relative to desired channel
> 60 dBc
I/Q phase error at 1MHz -3 +3 D eg r ees
Quadrature Accuracy
I/Q amplitude error at 1MHz -1.5 +1.5 dB
50MHz to 470MHz -50 -20
470MHz to 878MHz -50 -35
Spurious at the RF Input (Note 3)
878MHz to 1732MHz < -50 -20
dBmV
At 1kHz to 10kHz (Note 3) -80 -90
At 100kHz (Note 3) -94 -107
Phase Noise (Single-Sideband,
Closed Loop)
ΦN
At 1MHz -130
dBc/Hz
AC ELECTRICAL CHARACTERISTICS
(MAX3580 EV kit, V
CC
= +3.1V to +3.5V, GND = 0V. RF_AGC = BB_AGC = +2.85V, RF input terminated into a 75Ω load, BBI_ and
BBQ_ loaded by R
L
greater than 2kΩ and C
L
less than 10pF, VCO active, registers are set according to the recommended default
register conditions, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
CC
= +3.3V, T
A
= +25°C, unless otherwise
noted.) (Note 1)
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