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Preliminary
3-29
RF3320
Rev A10 010514
3
Note 1: The enable time is determined by the value of the capacitor on pin 8 (RAMP). A higher capacitor value will
increase the enable time, but will reduce the transient voltage.
Parameter
Specification
Unit
Condition
Min.
Typ.
Max.
AC Specifications, cont’d
Output Step Size
0.8
1.0
1.1
dB
Isolation in Transmit Disable
Mode
-80
-95
dBc
Maximum Gain, 20MHz
Output Noise
Maximum Gain
-37
-30
dBmV/
160kHz
-96dBc for a 59dBmV carrier in a 160kHz
bandwidth.
Minimum Gain
-55
-50
dBmV/
160kHz
-64dBc for an 8dBmV carrier in a 160kHz
bandwidth.
Transmit Disabled
-75
-70
dBmV/
160kHz
TXEN =0
TX EN Enable Time
0.5
1.0
µS
Time for gain to reach 99% of final value.
SeeNote1.
TX EN Transient Duration
2.4
3.0
µSSee Note 1.
Output Switching Transients
5
10
mVP-P
Maximum Gain
35
mVP-P
Minimum Gain
Output Impedance
255
300
345
Ω
Chip output impedance is nominally 300
Ω.
Differential to single-ended output conver-
sion to 75
Ω is performed in a balun with a
2:1 turns ratio, corresponding to a 4:1 imped-
ance ratio.
Input Impedance
75
Ω
Differential
Thermal
ThetaJC
28
°C/W
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