L9216B/H
Preliminary Data Sheet
September 2001
High-Voltage Ringing SLIC with Ground Start
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
Function
Fault Protection
RPT
RPR
Protector
30 Ω
30 Ω
Agere
L7591
1%
1%
—
Fusible or PTC Protection resistor.
Fusible or PTC Protection resistor.
—
Secondary protection.
Power Supply
CBAT1
CBAT2
DBAT1
CCC
0.1 µF
20%
20%
—
20%
20%
20%
100 V
50 V
—
10 V
100 V
100 V
VBAT filter capacitor.
VBAT filter capacitor. |VBAT2| < |VBAT1|.
Reverse current.
VCC filter capacitor.
Filter capacitor.
Filter capacitor.
0.1 µF
1N4004
0.1 µF
0.22 µF
0.1 µF
CF1
CF2
Ring/Ring Trip
CRING
CRT
RRT
0.47 µF
0.1 µF
383 kΩ
20%
20%
1%
10 V
10 V
1/16 W
ac-couple input ring signal.
Ring trip filter capacitor.
Ring trip filter resistor.
ac Interface
RGX
RTGS
CGS
CTX
CC1
4750 Ω
1.74 kΩ
12 nF
0.1 µF
0.1 µF
0.1 µF
49.9 kΩ
1%
1%
5%
20%
20%
20%
1%
1/16 W
1/16 W
10 V
10 V
10 V
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.
CC2
RT3
10 V
1/16 W
With RGP and RRCV, sets termination impedance and receive
gain.
RT6
RX
RHB1
RRCV
40.2 kΩ
115 kΩ
113 kΩ
59.0 kΩ
1%
1%
1%
1%
1/16 W
1/16 W
1/16 W
1/16 W
With RX, sets transmit gain.
With RT6, sets transmit gain.
With RX, sets hybrid balance.
With RGP and RT3, sets termination impedance and receive
gain.
RGP
54.9 kΩ
1%
1/16 W
With RRCV and RT3, sets termination impedance and receive
gain.
CN
RN1
RN2
120 pF
127 kΩ
47.5 kΩ
20%
1%
1%
10 V
1/16 W
1/16 W
High frequency compensation.
High frequency compensation.
High frequency compensation, compensate for dc offset at
RCVP/RCVN.
40
Agere Systems Inc.
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