ATTL7554AP Просмотр технического описания (PDF) - Agere -> LSI Corporation
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ATTL7554AP Datasheet PDF : 28 Pages
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L7554 Low-Power SLIC
Data Sheet
March 1997
Test Configurations
VBAT
0.1 µF
VCC
0.1 µF
100 Ω
VREG VBAT BGND VCC
PT
AGND
VTR
RLOOP
100 Ω
PR
SN
L7554
SLIC
XMT
RCVN
68.1 kΩ
DCOUT
IPROG
24.9 kΩ
LCTH
RTSP
RTSN
ICM
VTX TXI
RCVP
B0
B1
B2
NLC
NRDET
RGDET
CF1
CF2
FB2 FB1
0.1 µF
20 kΩ
20 kΩ
65 kΩ
26 kΩ
XMT
10 kΩ
RCV
0.1 µF
0.1 µF
Figure 4. L7554 Basic Test Circuit
12-2570 (C)
VBAT OR VCC
100 Ω
4.7 µF
DISCONNECT
BYPASS CAP
900 Ω
VS
VBAT OR
VCC
TP
+
BASIC
VT/R
TEST CIRCUIT
–
PR
PSRR = 20 log --V----S---
V T/R
Figure 5. Metallic PSRR
12-2335.a (C)
VBAT OR VCC
100 Ω
4.7 µF
DISCONNECT
BYPASS CAP
67.5 Ω
10 µF
+
67.5 Ω
VM
–
56.3 Ω
10 µF
VS
VBAT OR
VCC
PT
BASIC
TEST CIRCUIT
PR
PSRR = 20 log -V----S-
VM
Figure 6. Longitudinal PSRR
12-2336.a (C)
12
Lucent Technologies Inc.
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