le79555 Zarlink Semiconductor, le79555 Datasheet - Page 16

• Manufacturer Part Number: le79555
• Description: Subscriber Line Interface Circuit
• Manufacturer: Zarlink Semiconductor

- 52 V
BAT
Low ESR
560 pF
0.47 µF
0.47 µF
C
C
CH2
C
FIL
V1
RINGOUT
RYOUT1
RYOUT2
B (RING)
A (TIP)
N/C
330 nF
2.2 nF
R
1.3 kΩ
C
15 nF
L
1mH
MUR120
D
C
C
CH
1
CH1
2.2 nF
220 nF
CHCLK1
BX
QB
DA
DB
C
IN400x
D
C
AX
VBH
HP
Figure 9. Le79555 Engineering Test Circuit
DA
DB
A (TIP)
HPA
HPB
B (RING)
RINGOUT
RYOUT1
RYOUT2
BGND
RSVD
QBAT
VBAT
CHS
VREG
L
Zarlink Semiconductor Inc.
Le79555
16
CHCLK
AGND
VCC
CAS
DET
RSN
VTX
RDC
VDC
D2
D1
C3
C2
C1
RD
13.02 k Ω
35.4 k Ω
R
R
150 kΩ
DC1
D
VDC
R
C
330 nF
T
CAS
+5 V
V
CC
R
13.02 k Ω
D2
D1
C3
C2
C1
DET
C
220 nF
CHCLK
256 kHz
DC2
150 kΩ
DC
R
RX
V
V
RX
TX
ANALOG
GROUND
BATTERY
GROUND