L9214A/G
Low-Cost Ringing SLIC
Preliminary Data Sheet
October 2001
Test Configurations (continued)
100 µF
368 Ω
VBAT OR VCC
VITR
TIP
VS
100 Ω
DISCONNECT
BYPASS CAPACITOR
BASIC
4.7 µF
TEST CIRCUIT
368 Ω
100 µF
VS
RING
VBAT OR
VCC
TIP
+
VT/R
–
BASIC
TEST CIRCUIT
VS
VITR
LONGITUDINAL BALANCE = 20log
600 Ω
12-2584.D (F)
RING
Figure 8. Longitudinal Balance
VS
VT/R
PSRR = 20log
12-2582.c (F)
VITR
Figure 6. Metallic PSRR
PT
+
BASIC
TEST CIRCUIT
RCVN
OR
RCVP
VT/R
600 Ω
VBAT OR VCC
RCVN
OR
–
DISCONNECT
BYPASS CAPACITOR
100 Ω
4.7 µF
PR
RCVP
VS
VS
VBAT OR
VCC
VXMT
------------
GXMT =
VT ⁄ R
67.5 Ω
TIP
VT ⁄ R
------------------------------------------------
GRCV =
10 µF
BASIC
TEST CIRCUIT
VRCVP OR VRCVN
12-2587.J (F)
67.5 Ω
56.3 Ω
+
RING
VM
–
Figure 9. ac Gains
10 µF
VS
VM
PSRR = 20log
12-2583.b (F)
Figure 7. Longitudinal PSRR
Agere Systems Inc.
23
AGERE [ AGERE SYSTEMS ]
