L9216B/H
High-Voltage Ringing SLIC with Ground Start
Preliminary Data Sheet
September 2001
ac Applications
(continued)
Design Examples
(continued)
Blocking Capacitors
(continued)
Table 25. Parts List L9216; Agere T7504 First-Generation Codec Complex Termination; Meter Pulse
Application
Termination impedance = 220
Ω
+ (820
Ω
|| 115 nF), hybrid balance = 220
Ω
+ (820
Ω
|| 115 nF) Tx = 0 dBm,
Rx = 0 dBm.
Name
Value Tolerance
Rating
Fault Protection
R
PT
30
Ω
1%
Fusible or PTC
R
PR
30
Ω
1%
Fusible or PTC
Protector
Agere
—
—
L7591
Power Supply
C
BAT1
0.1
µF
20%
100 V
C
BAT2
0.1
µF
20%
50 V
D
BAT1
1N4004
—
—
C
CC
0.1
µF
20%
10 V
C
F1
0.22
µF
20%
100 V
C
F2
0.1
µF
20%
100 V
Ring/Ring Trip
C
RING
0.47
µF
20%
10 V
C
RT
0.1
µF
20%
10 V
R
RT
383 kΩ
1%
1/16 W
ac Interface
R
GX
4750
Ω
1%
1/16 W
R
TGS
1.74 kΩ
1%
1/16 W
C
GS
12 nF
5%
10 V
C
TX
0.1
µF
20%
10 V
C
C1
0.1
µF
20%
10 V
C
C2
0.1
µF
20%
10 V
R
T3
49.9 kΩ
1%
1/16 W
R
T6
R
X
R
HB1
R
RCV
R
GP
C
N
R
N1
R
N2
40.2 kΩ
115 kΩ
113 kΩ
59.0 kΩ
54.9 kΩ
120 pF
127 kΩ
47.5 kΩ
1%
1%
1%
1%
1%
20%
1%
1%
1/16 W
1/16 W
1/16 W
1/16 W
1/16 W
10 V
1/16 W
1/16 W
Function
Protection resistor.
Protection resistor.
Secondary protection.
V
BAT
filter capacitor.
V
BAT
filter capacitor. |V
BAT2
| < |V
BAT1
|.
Reverse current.
V
CC
filter capacitor.
Filter capacitor.
Filter capacitor.
ac-couple input ring signal.
Ring trip filter capacitor.
Ring trip filter resistor.
Sets T/R to VITR transconductance.
Gain shaping for complex termination.
Gain shaping for complex termination.
ac/dc separation.
dc blocking capacitor.
dc blocking capacitor.
With R
GP
and R
RCV
, sets termination impedance and receive
gain.
With R
X
, sets transmit gain.
With R
T6
, sets transmit gain.
With R
X
, sets hybrid balance.
With R
GP
and R
T3
, sets termination impedance and receive
gain.
With R
RCV
and R
T3
, sets termination impedance and receive
gain.
High frequency compensation.
High frequency compensation.
High frequency compensation, compensate for dc offset at
RCVP/RCVN.
40
Agere Systems Inc.
ZARLINK [ ZARLINK SEMICONDUCTOR INC ]
