Rainbow Electronics MAX19985A - Manual (Page 5)

MAX19985A
Dual, SiGe, High-Linearity, 700MHz to 1000MHz
Downconversion Mixer with LO Buffer/Switch
_______________________________________________________________________________________ 5
+3.3V SUPPLY AC ELECTRICAL CHARACTERISTICS
( Typical Application Circuit, RF and LO ports are driven from 50
Ω sources. Typical values are at V
CC = +3.3V, P RF = -5dBm,
P LO = 0dBm, f RF = 900MHz, f LO = 1100MHz, f IF = 200MHz, T C =+25°C, unless otherwise noted.) (Note 6)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Conversion Power Gain G C 8.7 dB
Conversion Power Gain Variation
vs. Frequency
∆G
C
Flatness over any one of three frequency
bands:
f
RF = 824MHz to 849MHz,
f RF = 869MHz to 894MHz,
f RF = 880MHz to 915MHz
0.15 dB
G ai n V ar i ati on Over Tem p er atur e TC G T C = -40°C to +85°C -0.012 dB/°C
Noise Figure NF 9.0 dB
Noise Figure Temperature
Coefficient
TC NF T C = -40°C to +85°C 0.018 dB/°C
Input 1dB Compression Point IP 1dB 10.6 dBm
Third-Order Input Intercept Point IIP3
f RF1 = 900MHz, f RF2 = 901MHz,
f IF = 200MHz, P RF = -5dBm/tone
24.7 dBm
P RF = -10dBm -74.9
2LO-2RF Spur Rejection 2 x 2
f RF = 800MHz,
f LO = 1000MHz,
f SPUR = 900MHz P RF = -5dBm -69.9
dBc
P RF = -10dBm -78
3LO-3RF Spur Rejection 3 x 3
f RF = 800MHz,
f LO = 1000MHz,
f SPUR = 933.333MHz P RF = -5dBm -73
dBc
Maximum LO Leakage at RF Port f LO = 900MHz to 1300MHz, P LO = +3dBm -40 dBm
M axi m um 2LO Leakag e at RF P or t f LO = 900MHz to 1300MHz, P LO = +3dBm -42 dBm
Maximum LO Leakage at IF Port f LO = 900MHz to 1300MHz, P LO = +3dBm -34 dBm
Minimum RF-to-IF Isolation f RF = 824MHz to 915MHz 38 dB
LO-to-LO Isolation
P LO1 = +3dBm, P LO2 = +3dBm,
f LO1 = 900MHz, f LO2 = 901MHz (Note 8)
45 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
48 dB
LO Switching Time 50% of LOS E L to IF settl ed w i thi n 2 d eg r ees 50 ns
RF Input Impedance Z RF 50 Ω
RF Input Return Loss
LO on and IF terminated into matched
impedance
21 dB
LO Input Impedance Z LO 50 Ω
RF and IF terminated into matched
impedance, LO port selected
31
LO Input Return Loss
RF and IF terminated into matched
impedance, LO port unselected
24
dB