參數(shù)資料
型號: LUCL8560FAU-DT
英文描述: Low-Power SLIC with Ringing
中文描述: 低功耗振鈴用戶接口
文件頁數(shù): 38/46頁
文件大小: 842K
代理商: LUCL8560FAU-DT
Data Sheet
April 2000
L8560 Low-Power SLIC with Ringing
38
Lucent Technologies Inc.
Applications
(continued)
ac Design
(continued)
ac equivalent circuits using a T7504 codec (V
CC
only) are shown in Figures 37 and 38. Use the following two equa-
tions for Figure 37 below:
R
STP
= 1 k
x {[R
GP
(k
) || R
RCV
(k
)]/24 (k
)}
C
STP
= 270 pF/{[R
GP
(k
) || R
RCV
(k
)]/24 (k
)}
12-2554.p (F)
Figure 37. ac Equivalent Circuit Not Including Spare Op Amp
Use the following two equations for Figure 38 below:
R
STN
= 1 k
x {[R
GN
(k
) || R
RCV
(k
)]/24 (k
)}
C
STN
= 270 pF/{[R
GN
(k
) || R
RCV
(k
)]/24 (k
)}
12-3013.j (F)
Figure 38. ac Equivalent Circuit Including Spare Op Amp
R
P
Z
T
+
R
P
V
T/R
I
T/R
V
S
Z
T/R
+
RING
A
V
= –1
A
V
= 1
VITR
+
+
CURRENT
SENSE
TIP
+
R
T3
R
RCV
R
HB1
R
T6
RCVN
RCVP
R
X
VGSX
VFXIN
VFR
1/2 T7504 CODEC
R
GP
+2.4 V
–0.400 V/mA
A
V
= 4
L8560 SLIC
VFXIP
R
STP
C
STP
+
Z
T5
SN
AGND
R
T5X
C
STN
R
P
Z
T
+
R
P
V
T/R
I
T/R
V
S
Z
T/R
+
RING
A
V
= –1
A
V
= 1
VITR
+
+
CURRENT
SENSE
TIP
R
T4
+
R
T3
R
RCV
R
HB1
R
T6
RCVN
RCVP
R
X
VGSX
VFXIN
VFRO
1/4 T7504 CODEC
R
GN
+2.4 V
L8560 SLIC
A
V
= 4
R
STN
XMT
VFXIP
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