Rainbow Electronics MAX19985A - Manual (Page 4)

MAX19985A
Dual, SiGe, High-Linearity, 700MHz to 1000MHz
Downconversion Mixer with LO Buffer/Switch
4 _______________________________________________________________________________________
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
P RF = -10dBm -63 -76
2LO-2RF Spur Rejection 2 x 2
f RF = 800MHz,
f LO = 1000MHz,
f SPUR = 900MHz
P RF = -5dBm
(Note 9)
-58 -71
dBc
P RF = -10dBm -65 -78
3LO-3RF Spur Rejection 3 x 3
f
RF
= 800MHz,
f LO = 1000MHz,
f SPUR = 933.3MHz
P RF = -5dBm
(Note 9)
-60 -73
dBc
LO Leakage at RF Port
f LO = 900MHz to 1300MHz, P LO = +3dBm
(Note 10)
-40 -20 dBm
f LO = 900MHz to 1200MHz, P LO = +3dBm
(Note 10)
-38 -25
2LO Leakage at RF Port
f
L O
= 1200M H z to 1300M H z, P
L O
= + 3d Bm
(Note 10)
-35 -22
dBm
3LO Leakage at RF Port
f LO = 900MHz to 1300MHz, P LO = +3dBm
(Note 10)
-50 -28 dBm
4LO Leakage at RF Port
f LO = 900MHz to 1300MHz, P LO = +3dBm
(Note 9)
-25 -15 dBm
LO Leakage at IF Port
f LO = 900MHz to 1300MHz, P LO = +3dBm
(Note 10)
-35 -23 dBm
RF-to-IF Isolation f RF = 824MHz to 915MHz (Note 10) 30 38 dB
LO-to-LO Isolation
P LO1 = +3dBm, P LO2 = +3dBm,
f LO1 = 900MHz, f LO2 = 901MHz,
P RF = -5dBm (Notes 8, 10)
40 46 dB
Channel-to-Channel Isolation
RFM AIN ( RFD IV ) conver ted p ow er m easur ed
at IFD IV ( IFM AIN ) , r el ati ve to IFM AIN ( IFD IV ) ,
al l unused p or ts ter m i nated to 50
Ω ( N ote 9)
40 48 dB
LO Switching Time 50% of LOS E L to IF settl ed w i thi n 2 d eg r ees 50 1000 ns
RF Input Impedance Z RF 50 Ω
RF Input Return Loss
LO on and IF terminated into matched
impedance
20 dB
LO Input Impedance Z LO 50 Ω
RF and IF terminated into matched
impedance, LO port selected
20
LO Input Return Loss
RF and IF terminated into matched
impedance, LO port unselected
20
dB
IF Terminal Output Impedance Z IF
Nominal differential impedance at the IC’s
IF output
200 Ω
IF Return Loss
RF terminated in 50 Ω; transformed to 50Ω
using external components shown in the
Typical Application Circuit 18 dB
+5.0V SUPPLY AC ELECTRICAL CHARACTERISTICS (continued)
( Typical Application Circuit, V CC = +4.75V to +5.25V, RF and LO ports are driven from 50
Ω sources, P
LO = -3dBm to +3dBm,
P RF = -5dBm, f RF = 700MHz to 1000MHz, f LO = 900MHz to 1200MHz, f IF = 200MHz, f RF < f LO , T C = -40°C to +85°C. Typical values
are at V CC = +5.0V, P RF = -5dBm, P LO = 0dBm, f RF =900MHz, f LO = 1100MHz, f IF = 200MHz, T C =+25°C, all parameters are guaran-
teed by design and characterization, unless otherwise noted.) (Note 6)