ATTL7554BP Agere Systems, ATTL7554BP Datasheet - Page 25

• Manufacturer Part Number: ATTL7554BP
• Description: L7554 Low-Power SLIC
• Manufacturer: Agere Systems

Data Sheet
March 1997
Lucent Technologies Inc.
Applications
ac Design
ac equivalent circuits using a T7513 Codec are shown in Figures 32 and 33.
V
V
S
S
Z
T/R
Z
Z
T
T/R
Z
V
+
–
T
R
R
T/R
I
P
P
T/R
V
+
–
(continued)
R
R
PR 40
T/R
PT 40
P
I
P
T/R
PR 40
PT 40
(continued)
Figure 32. ac Equivalent Circuit Not Including Spare Op Amp
Figure 33. ac Equivalent Circuit Including Spare Op Amp
A
A
V
V
= –1
= 1
A
A
V
V
–
+
= –1
= 1
L7554 SLIC
–0.4 V/mA
A
V
= 4
VITR
–
+
–
+
ATT7564 SLIC
RCVN
RCVP
L7554 SLIC
–0.4 V/mA
R
AGND
A
T4
V
SN
= 4
–
+
VITR
–
+
Z
RCVN
RCVP
T5
R
XMT
GN
R
R
G
T3
R
T1
R
R
RCV
T2
R
HB1
R
R
R
RCV
T6
HB1
L7554 Low-Power SLIC
VFXIN
VFXIP
(PWROP)
VFR
VFXIN
VFXIP
(PWROP)
VFR
T7513 CODEC
T7513 CODEC
–
+
R
X
–
+
R
X
VGSX
12-2554.a (C)
VGSX
12-3013 (C)
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