STLC7550TQF7TR STMicroelectronics, STLC7550TQF7TR Datasheet - Page 20

• Manufacturer Part Number: STLC7550TQF7TR
• Description: IC ANALOG FRONT END LV 48-TQFP
• Manufacturer: STMicroelectronics

Specifications of STLC7550TQF7TR

• Number Of Bits: 16
• Number Of Channels: 1
• Power (watts): 30mW
• Voltage - Supply, Analog: 3V
• Voltage - Supply, Digital: 3V
• Package / Case: 48-TQFP, 48-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Typical application
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Typical application
Figure 12. Line Interface - Differential Duplexor
All capacitor, resistor and impedance values are provided for indication only. These values
must be readjusted according to line transformer characteristics and also
telecommunication regulations in force in individual countries.
Refer to Application Note AN930 for more detailed information. Contact your local
representative.
OUT+
OUT-
IN+
IN-
VCM
13.2kΩ
13.2kΩ
680pF
2.2nF
2.2nF
1.2kΩ
1.2kΩ
22kΩ
22kΩ
22kΩ
22kΩ
C'
R'
R'
r
Rev 9
100pF
100pF
VCM
C : Improve the low frequency response.
Its value depends on the transformer inductance.
C' : Reduces the DC offset gain.
Z0 : Nominal line impedance
C
2R
C
2R
Z0/2
Z0/2
R
R
Phone
Line
STLC7550