Rainbow Electronics MAX19998 - Manual (Page 4)

SiGe, High-Linearity, 2300MHz to 4000MHz
Downconversion Mixer with LO Buffer
MAX19998
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3.3V SUPPLY AC ELECTRICAL CHARACTERISTICS—fRF = 3100MHz to 3900MHz,
LOW-SIDE LO INJECTION
(Typical Application Circuit, with tuning elements outlined in Table 1, R1 = 845ω, R2 = 1.1kω, RF and LO ports are driven from 50I
sources, f
RF > f LO . Typical values are for T C = +25NC, V CC = 3.3V, PRF = -5dBm, P LO = 0dBm, f RF = 3500MHz, f LO = 3200MHz, f IF
= 300MHz, unless otherwise noted.) (Note 7)
5.0V SUPPLY AC ELECTRICAL CHARACTERISTICS—fRF = 3100MHz to 3900MHz,
LOW-SIDE LO INJECTION (continued)
(Typical Application Circuit, with tuning elements outlined in Table 1, R1 = 698ω, R2 = 604ω, V CC = 4.75V to 5.25V, RF and LO ports
are driven from 50I sources, P LO = -3dBm to +3dBm, P RF = -5dBm, f RF = 3100MHz to 3900MHz, f IF = 300MHz, f LO = 2800MHz to
3600MHz, f RF > f LO , T C = -40NC to +85NC. Typical values are for T C = +25NC, V CC = 5.0V, P RF = -5dBm, P LO = 0dBm, f RF = 3500MHz,
f LO = 3200MHz, f IF = 300MHz. All parameters are guaranteed by design and characterization, unless otherwise noted.) (Note 7)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Small-Signal Conversion Gain G C 8.4 dB
Gain Variation vs. Frequency D G C
f RF = 3100MHz to 3900MHz, any 100MHz
band
0.15 dB
Conversion Gain Temperature
Coefficient
TC CG
f
RF
= 3100MHz to 3900MHz,
T C = -40NC to +85NC
-0.01 dB/NC
Input 1dB Compression Point IP 1dB (Note 10) 7.7 dBm
Third-Order Input Intercept Point IIP3 f RF1 - f RF2 = 1MHz, P RF1 = P RF2 = -5dBm/tone 20.1 dBm
IIP3 Variation with T C
f RF1 - f RF2 = 1MHz, P RF1 = P RF2 = -5dBm/tone,
T C = -40NC to +85NC
Q 0.2 dB
Single-Sideband Noise Figure NF SSB No blockers present 9.3 dB
Noise Figure Temperature
Coefficient
TC NF
Single sideband, no blockers present,
T
C = -40NC to +85NC
0.018 dB/NC
2RF - 2LO Spur Rejection 2 x 2 f SPUR = f LO + 150MHz
P RF = -10dBm 64
dBc
P RF = -5dBm 59
3RF - 3LO Spur Rejection 3 x 3 f SPUR = f LO + 100MHz
P RF = -10dBm 74
dBc
P RF = -5dBm 64
RF Input Return Loss RL RF
LO on and IF terminated into a matched
impedance
30 dB
LO Input Return Loss RL LO
RF and IF terminated into a matched imped-
ance
20 dB
IF Output Impedance Z IF
Nominal differential impedance at the IC’s IF
outputs
200
I
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
RF-to-IF Isolation f RF = 3500MHz, P LO = +3dBm (Note 9) 27 29.5 dB
LO Leakage at RF Port
f LO = 2800MHz to 3600MHz, P LO = +3dBm
(Note 9)
-26 dBm
2LO Leakage at RF Port P LO = +3dBm -29 dBm
LO Leakage at IF Port P LO = +3dBm (Note 9) -22 dBm