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MAX2021
High-Dynamic-Range, Direct Up-/Downconversion
650MHz to 1200MHz Quadrature Mod/Demod
AC ELECTRICAL CHARACTERISTICS (Demodulator)
(MAX2021 Typical Application Circuit when operated as a demodulator, V CC = 4.75V to 5.25V, GND = 0V, I/Q outputs are recombined
using network shown in Figure 5. Losses of combining network not included in measurements. V DC for BBI+. BBI-, BBQ+, BBQ- = 0V,
P RF = P LO = 0dBm, 750MHz ≤ f LO ≤ 1200MHz, 50 Ω LO and RF system impedance, R1 = 432 Ω , R2 = 619 Ω , R3 = 332 Ω , T C = -40°C to
+85°C. Typical values are at V CC = 5V, T C = +25°C, unless otherwise noted.) (Note 6)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
RF INPUT
Conversion Loss
Noise Figure
Noise Figure Under-Blocking
Input Third-Order Intercept
Input Second-Order Intercept
Input 1dB Compression
I/Q Gain Mismatch
L C
NF
NF BLOCK
IIP3
IIP2
P 1dB
f BB = 25MHz (Note 11)
f LO = 900MHz
f BLOCKER = 900MHz, P RF = 11dBm,
f RF = f LO = 890MHz (Note 12)
f RF1 = 925MHz, f RF2 = 926MHz, f LO =
900MHz, P RF = P LO = 0dBm, f SPUR = 24MHz
f RF1 = 925MHz, f RF2 = 926MHz, f LO =
900MHz, P RF = P LO = 0dBm, f SPUR = 51MHz
f IF = 50MHz, f LO = 900MHz, P LO = 0dBm
f BB = 1MHz, f LO = 900MHz, P LO = 0dBm
9.2
9.3
17.8
35.2
76
30
0.06
dB
dB
dB
dBm
dBm
dBm
dB
I/Q Phase Mismatch
Minimum Demodulation 3dB
Bandwidth
Minimum 1dB Gain Flatness
f BB = 1MHz,
f LO = 900MHz
LO = 1160MHz LO > RF
LO = 1160MHz LO > RF
P LO = 0dBm
P LO = -3dBm
1.1
0.15
> 550
> 450
Degrees
MHz
MHz
AC ELECTRICAL CHARACTERISTICS (Demodulator LO = 965MHz)
(Typical Application Circuit when operated as a demodulator. I/Q outputs are recombined using network shown in Figure 5. Losses of
combining network not included in measurements. RF and LO ports are driven from 50 Ω sources. Typical values are for T A = +25°C,
V CC = 5.0V, I/Q DC voltage return = 0V, P RF = 0dBm, P LO = 0dBm, f RF = 780MHz, f LO = 965MHz, f IF = 185MHz, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Conversion Loss
Noise Figure
Lc
NF SSB
10.1
10.4
dB
dB
Noise Figure Under Blocking
NF BLOCK
f BLOCKER = 700MHz, P BLOCKER = 11dBm,
f LO = 965MHz, f RF = 865MHz, (Note 12)
19
dB
f RF1 = 780MHz, f RF2 = 781MHz,
P RF1 = P RF2 = 0dBm, f IF1 = 185MHz,
34.5
Input Third-Order Intercept
Point
IIP3
f IF2 = 184MHz
f RF1 = 780MHz, f RF2 = 735MHz,
P RF1 = P RF2 = 0dBm, f IF1 = 185MHz,
34.6
dBm
f IF2 = 230MHz
4
Maxim Integrated
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