Dual 50MHz to 1000MHz High-Linearity,
Serial/Parallel-Controlled Digital VGA
+5V SUPPLY AC ELECTRICAL CHARACTERISTICS (continued)
( 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
Amplitude Overshoot/
Undershoot
Switching Speed
Input Return Loss
Output Return Loss
SYMBOL
RL IN
RL OUT
CONDITIONS
Elapsed time = 15ns
Between any
two states
Elapsed time = 40ns
31dB to 0dB
RF settled to
within Q 0.1dB
0dB to 31dB
50 I source
50 I load
MIN
TYP
1.0
0.05
25
21
21.6
21.2
MAX
UNITS
dB
ns
dB
dB
SERIAL PERIPHERAL INTERFACE (SPI)
Maximum Clock Speed
Data-to-Clock Setup Time
Data-to-Clock Hold Time
Clock-to- CS Setup Time
CS Positive Pulse Width
CS Setup Time
Clock Pulse Width
f CLK
t CS
t CH
t ES
t EW
t EWS
t CW
20
2
2.5
3
7
3.5
5
MHz
ns
ns
ns
ns
ns
ns
+3.3V SUPPLY AC ELECTRICAL CHARACTERISTICS
( Typical Application Circuit , V CC = V CC_AMP_1 = V CC_AMP_2 = V CC_RG = +3.3V, attenuators are set for maximum gain, RF ports
are driven from 50 I sources, AMPSET = 1, PD_1 = PD_2 = 0, 100MHz ≤ fRF ≤ 500MHz, T C = -40 N C to +85 N C. Typical values are at
maximum gain setting, V CC_ = +3.3V, P IN = -20dBm, f RF = 350MHz, and T C = +25 N C, unless otherwise noted.) (Note 6)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Small-Signal Gain
G
20.9
dB
Output Third-Order Intercept
Point
Noise Figure
Total Attenuation Range
OIP3
NF
P OUT = 0dBm/tone
29.6
5.9
30.8
dBm
dB
dB
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
unused ports terminated to 50 I
49.1
dB
Output -1dB Compression Point
P 1dB
(Note 7)
13.4
dBm
Note 5: Operation outside this range is possible, but with degraded performance of some parameters. See the Typical Operating
Characteristics .
Note 6: All limits include external component losses. Output measurements are performed at the RF output port of the Typical
Application Circuit .
Note 7: It is advisable not to continuously operate RF input 1 or RF input 2 above +15dBm.
5
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