STLC1511 查看數據表（PDF） - STMicroelectronics
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STLC1511 Datasheet PDF : 31 Pages
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STLC1511
<19>Minimum DS frequency is 36*4.3125kHz=155.25kHz and as such the coupling capacitors between RXINP/N and RXDCIP/N
must be such that the high pass pole is ~15kHz (typical). With a 1kW minimum input impedance at RXDCIP/N this gives a capacitor
value of about 10nF. This gives a 1t settling time of 10ms.To guarantee 12-bit performance a minimum of 10t settling gives 100ms.
<20>Minimum DS frequency is 7*4.3125kHz=30.1875kHz and as such the coupling capacitors between RXINP/N and RXDCIP/N
must be such that the high pass pole is ~3kHz (typical). With a 1kW minimum input impedance at RXDCIP/N this gives a capacitor
value of about 53nF. This gives a 1t settling time of 53ms.To guarantee 12-bit performance a minimum of 10t settling gives 530ms.
3.3 TRANSMIT PATH SPECIFICATIONS
Table 3. Transmit Path Specifications
Unless otherwise noted, typical specifications apply for VCC=5 Volts, temperature=27×C, nominal process and
current. Maximum and minimum performance is with VCC ±5%, -40 =<Tjunction =< 105×C, and worst case process.
Description
min
typ
max
Units
Comments
Absolute Gain1 2
0 =< D =< 16
D > 16
-(2 · D) - 1.8 -(2 · D)
-33.8
-32.0
-(2 · D) - 1.0 dB
-31.0
Where “D” is the binary
value in b[11:7] of the
control word.
Includes Vcc,
temperature, process,
and frequency variation.
Gain Step Size
1.8
2.0
2.2
dB
For a 1 LSB change in
the control word at a
fixed frequency f (30kHz
=< f =< 540kHz)
Relative Gain Accuracy3
(relative to ideal gain of 2dB per -0.4
step.)
+0.4
For more than a 1LSB
change in the control
dB
word.
Assumes a fixed Vcc,
temperature, and
frequency.
Gain Variation with Temperature4 -0.3
0.3
dB
For a fixed Vcc and
frequency f (30kHz =< f
=< 540kHz) relative to
27oC.
Gain Variation with Supply
-0.1
Voltage5
0.1
dB
For a fixed frequency f.
(30kHz =< f =< 540kHz)
and fixed temperature
relative to Vcc=5.0V.
Gain Variation with Frequency6
30kHz =< f =< 120kHz
155kHz =< f =< 540kHz
-0.6
-1.0
For a fixed Vcc and
temperature.
0
dB
relative to 30kHz
0
relative to 155kHz
9/31
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