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1700MHz to 2200MHz High-Linearity,
SPI-Controlled DVGA with Integrated Loopback Mixer
Typical Operating Characteristics (continued)
(MAX2059 Typical Application Circuit , V CC = +4.75V to +5.25V, digital attenuators set for maximum gain, 1700MHz ≤ f RF ≤ 2200MHz,
40MHz ≤ f LO ≤ 100MHz, T C = -40°C to +85°C. Typical values are at V CC = 5.0V, P IN = 0dBm, f RF = 1850MHz, f LO = 95MHz, f LBOUT =
f RF - f LO , and T C = +25°C, unless otherwise noted.)
0
MIXER OUTPUT RETURN LOSS
vs. RF FREQUENCY (MIXER DISABLED)
0
MIXER OUTPUT RETURN LOSS
vs. RF FREQUENCY (MIXER DISABLED)
0
LO RETURN LOSS vs. LO FREQUENCY
(MIXER ENABLED)
5
T C = +5 ° C
T C = -40 ° C
5
10
10
10
T C = +85 ° C
15
15
20
T C = +25 ° C
20
T C = +85 ° C
T C = +25 ° C
20
V CC = 4.75V, 5.0V, 5.25V
30
25
30
25
30
40
T C = +5 ° C
T C = -40 ° C
1700
1800
1900 2000 2100
2200
2300
1700
1800
1900 2000 2100 2200
2300
0
50 100 150
200
RF FREQUENCY (MHz)
LO RETURN LOSS vs. LO FREQUENCY
(MIXER ENABLED)
0
10
RF FREQUENCY (MHz)
0
-10
LO FREQUENCY (MHz)
ATTEN A ONLY (NO PC BOARD LOSS)
GAIN vs. RF FREQUENCY
20
30
40
V CC = 4.75V, 5.0V, 5.25V
-20
-30
-40
0
50 100 150
200
1500 1600 1700 1800 1900 2000 2100 2200 2300
3
LO FREQUENCY (MHz)
ATTEN A ONLY
ABS ACCURACY vs. RF FREQUENCY
1.0
RF FREQUENCY (MHz)
ATTEN A ONLY
REL ACCURACY vs. RF FREQUENCY
2
0.5
1
0
0
-1
-0.5
-2
-3
-4
-5
STATES 24dB–31dB
-1.0
-1.5
24dB ATTEN
-6
ATTEN
1500 1600 1700 1800 1900 2000 2100 2200 2300
RF FREQUENCY (MHz)
-2.0
1500 1600 1700 1800 1900 2000 2100 2200 2300
RF FREQUENCY (MHz)
8
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