Dual 50MHz to 1000MHz High-Linearity,
Serial/Parallel-Controlled Digital VGA
RECOMMENDED AC OPERATING CONDITIONS
PARAMETER
RF Frequency
SYMBOL
f RF
(Note 5)
CONDITIONS
MIN
50
TYP
MAX
1000
UNITS
MHz
+5V SUPPLY AC ELECTRICAL CHARACTERISTICS
( Typical Application Circuit , V CC = V CC_AMP_1 = V CC_AMP_2 = V CC_RG = +4.75V to +5.25V, attenuators are set for maximum gain,
RF ports are driven from 50 I sources, AMPSET = 0, PD_1 = PD_2 = 0, 100MHz ≤ f RF ≤ 500MHz, T C = -40 N C to +85 N C. Typical
values are at maximum gain setting, V CC_ = +5.0V, P IN = -20dBm, f RF = 350MHz, and T C = +25 N C, unless otherwise noted.) (Note 6)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
f RF = 50MHz
f RF = 100MHz
f RF = 200MHz
22.0
21.7
21.3
Small-Signal Gain
G
f RF = 350MHz, T C = +2 5 N C
18
21.0
23
dB
f RF = 450MHz
f RF = 750MHz
f RF = 900MHz
20.8
19.9
18.3
Gain vs. Temperature
From 100MHz to 200MHz
-0.006
0.35
dB/ N C
Gain Flatness vs. Frequency
Any 100MHz frequency band from
200MHz to 500MHz
f RF = 50MHz
f RF = 100MHz
f RF = 200MHz
0.25
5.2
5.4
5.6
dB
Noise Figure
NF
f RF = 350MHz
5.8
dB
f RF = 450MHz
f RF = 750MHz
f RF = 900MHz
5.9
6.4
6.7
Total Attenuation Range
30.8
dB
Output Second-Order Intercept
Point (Minimum Attenuation)
OIP2
P OUT = 0dBm/tone, D f = 1MHz, f 1 + f 2
51.6
dBm
RF input 1 amplified power measured at
RF output 2 relative to RF output 1, all
48.8
Path Isolation
unused ports terminated to 50 I
RF input 2 amplified power measured at
RF output 1 relative to RF output 2, all
49.4
dB
unused ports terminated to 50 I
3
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