STLC1512 查看數據表（PDF） - STMicroelectronics
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STLC1512 Datasheet PDF : 26 Pages
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STLC1512
noise floor which will degrade the SNDR of the re-
ceive signal.
The same is true of the transmit signal. If the signal is
undistorted it will show up out of band in the receive
path and will not degrade SNDR. However, if the
transmit signal is distorted by the cross-talk mecha-
nism it will show up in the receive band and could re-
duce the SNDR.
The cross-talk numbers are specified from output to
output under maximum gain conditions.
Table 2. Chip Performance Specifications
Description
Rx Cross-Talk into Tx
Undistorted
Rx Cross-Talk into Tx
Distorted
Tx Cross-talk into Rx
Undistorted
Tx Cross-talk into Rx
Distorted
min nom max
Units
Comments
-55
dB
Measured from the active low pass filter
output in the receive path to tip and ring.
-73
dB
Measured from the active low pass filter
output in the receive path to tip and ring.
-50
dB
Measured from tip and ring to the active
low pass filter output with the maximum
gain setting in place.
-86
dB
Measured from tip and ring to the active
low pass filter output with the maximum
gain setting in place.
4.2 Power Amplifier Performance
Specifications
The power amplifier must be specified with all of the
external components in the application diagram.
Without these components the amplifier will not func-
tion correctly. Specifications that are measured at the
chip are specified as such in the comments.
Table 3 contains the conditions over which the spec-
ifications in Table 4 apply. The limits on the specifica-
tions in Table are valid over all of the ranges
specified in Table 3. The nominal values of the spec-
ification occur at the nominal value of all of the condi-
tions in Table 3 unless otherwise specified.
...
Table 3. Power Amplifier Performance Limits
Description
min nom max
Units
Comments1,2
Gain
19.9 20.1 20.3 dB
Ambient Temperature
-40
27
85
oC
Line Impedance
80
100
160
W
A nominal chip will have no problem
driving 200 Ω or 50 Ω.
Supply voltage for TXVCC
4.75 5.0
5.25 V
<1>Nominal specifications are for nominal bias and process
<2>Maximum and minimum specifications are for worst case process and bias conditions
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