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STLC3065QTR 데이터시트(PDF) 13 Page - STMicroelectronics

부품명 STLC3065QTR
상세설명  WLL SUBSCRIBER LINE INTERFACE CIRCUIT
PDF  27 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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STLC3065QTR 데이터시트(HTML) 13 Page - STMicroelectronics

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EXTERNAL COMPONENTS
Name
Function
Formula
Typ. Value
RREF
Bias setting current
RREF = 1.3/Ibias
Ibias = 50
µA
26k
Ω 1%
CSVR
Negative Battery Filter
CSVR = 1/(2
π ⋅ fp ⋅ 1.8MΩ)
fp = 50Hz
1.5nF 10%
100VL
RD
Ring Trip threshold setting
resistor
RD = 100/IRTH
2K
Ω <RD < 5KΩ
4.12k
Ω 1%
@ IRTH = 24mA
CAC
AC/DC split capacitance
22
µF 20% 15VL
@ RD = 4.12k
Ω
RP
Line protection resistor
Rp > 30
Ω
41
Ω 1%
RS
Protection and series switches
resistance image
RS = 100
⋅ (Rp + 9Ω)5kΩ @Rp = 41Ω
ZAC
Two wire AC impedance
ZAC = 50
⋅ (Zs - 2Rp - 18Ω)
25k
Ω 1%
@ Zs = 600
Ω
ZA (1)
SLIC impedance balancing
network
ZA = 50
⋅ Zs
30k
Ω 1%
@ Zs = 600
Ω
ZB (1)
Line impedance balancing
network
ZB = 50
⋅ Zl
30k
Ω 1%
@ Zl = 600
Ω
CCOMP
AC feedback loop compensation
CCOMP = 1/(2
π⋅fo⋅100⋅(RP+9Ω))
fo = 250kHz
120pF 10% 10VL
@Rp = 41
Ω
CH
Trans-Hybrid Loss frequency
compensation
CH = CCOMP
120pF 10% 10VL
RLIM
Current limiting programming
RLIM = 1300/Ilim
32.5k
Ω < RLIM < 65kΩ
52.3k
Ω 1%
@ Ilim = 25mA
RTH
Off-hook threshold programming
(ACTIVE mode)
RTH = 260/ITH
27k
Ω < RTH < 52kΩ
28.7k
Ω 1%
@ITH = 9mA
CREV
Reverse polarity transition time
programming
CREV = (1/3750)
⋅ ∆T/∆VTR)
22nF 10% 10V
@ 12V/ms
RTTX (3)
Pulse metering cancellation
resistor
RTTX = 50Re[(Zlttx+2Rp+18
Ω)]
15k
Ω
@Zlttx = 200
Ω real
CTTX (3)
Pulse metering cancellation
capacitor
CTTX = 1/{50
⋅2π⋅fttx[-lm(Zlttx)]}
100nF 10% 10V (2)
@ Zlttx = 200
Ω real
RLV
Pulse metering level resistor
RLV = 63.3
⋅103⋅α⋅VLOTTX
α = (|Zlttx + 2Rp + 18Ω|/|Zlttx|)
27k
Ω 1%
@VLOTTX = 275mVrms
CS
Pulse metering shaping
capacitor
CS =
τ/(2⋅RLV)
100nF 10% 10V
@
τ = 6ms, RLV = 27.1kΩ
CFL
Pulse metering filter capacitor
CFL = 2/(2
π⋅fttx⋅RLV)
1nF 10% 10V
@fttx = 12kHz
RLV = 27k
Ω
RDD
Pull up resistors
100k
Ω
CVCC
Internally supply filter capacitor
100nF 20% 10V
CVpos
Positive supply filter capacitor
with low impedance for switch
mode power supply
100
µF(4)
CV
Battery supply filter capacitor
with low impedance for switch
mode power supply
100
µF 20% 100V (5)
CVB
High frequency noise filter
470nF 20% 100VL
STLC3065
13/27



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