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IF Digitally Controlled Variable-Gain Amplifier
AC ELECTRICAL CHARACTERISTICS
(Typical application circuit without matching, V CC = +4.75V to +5.25V, GND = 0V, max gain (B0 = B1 = B2 = B3 = B4 = 0), R 1 =
825 ? , P OUT = 5dBm, f IN = 50MHz, 50 ? RF system impedance. Typical values are at V CC = +5V and T A = +25°C, unless otherwise
noted.) (Notes 1, 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Frequency Range
Gain
Noise Figure
Minimum Reverse Isolation
Output 1dB Compression Point
2nd-Order Output Intercept Point
3rd-Order Output Intercept Point
2nd Harmonic
3rd Harmonic
RF Gain-Control Range
Gain-Control Resolution
Attenuation Absolute Accuracy
Attenuation Relative Accuracy
Gain Drift Over Temperature
Gain Flatness Over 50MHz BW
f R
G
NF
P 1dB
OIP2
OIP3
2f IN
3f IN
No attenuation
Max gain
Max gain
Max gain
f 1 + f 2 , f 1 = 50MHz, f 2 = 51MHz, 5dBm/tone
All gain conditions, 5dBm/tone
Compared to the ideal expected
attenuation
Between adjacent states
T A = -40°C to +85°C
Peak-to-peak for all settings,
F CENTER = 75MHz
50
15.5
4.7
22
20.6
42
34.7
-44
-68
23
1
0.15/
-0.05
±0.05
±0.1
0.1
400
MHz
dB
dB
dB
dBm
dBm
dBm
dBc
dBc
dB
dB
dB
dB
dB
dB
Peak-to-peak for all settings,
F CENTER = 200MHz
0.2
Attenuator Switching Time
Input Return Loss
Output Return Loss
50% control to 90% RF
f R = 50MHz to 250MHz, all gain conditions
f R = 50MHz to 250MHz, all gain conditions
40
15
15
ns
dB
dB
Note 1: Guaranteed by design and characterization.
Note 2: All limits reflect losses of external components. Output measurements are taken at RF OUT using the typical application
circuit.
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3
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