le79r241 Zarlink Semiconductor, le79r241 Datasheet - Page 20

• Manufacturer Part Number: le79r241
• Description: Intelligent Subscriber Line Interface Circuit
• Manufacturer: Zarlink Semiconductor

LINE CARD PARTS LIST- INTERNAL RINGING
The following list defines the parts and part values required to meet target specification limits for channel i of the line card (i =
1,2,3,4).
Notes:
1.
2.
3.
U1
U2
U3, U4, U5, U6
DT1
DH
RFA
RSA
RT
RRX
RREF
RSHB, RSLB, RSPB
RHLa
RHLb
RHLc
RHLd
CHLb
CHLd
RMT
RLG
RTEST
CAD
CBATH
CHP
CS1
RMGL
RMGP
i
Required to insure VBH < VBL during startup. May not be needed for some supplies.
DT2i is optional - Should be put if Le79R251 is used.
Value can be adjusted to suit application.
i
1
i
i
i
, DT2
, DL
i
i
, RFB
i
i
i
i
, CS2
, RSB
, CBD
i
i
i
i
i
i
i
i
i
, CBATL
i
, DT1
i
i
i
2
Item
i
i
2
i
, DT2
i
, CBATP
i
, DLH
i
i
Le79R241 ISLIC
device
VE790 series ISLAC
device
B1100CC
Diode
Diode
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Capacitor
Capacitor
Resistor
Resistor
Resistor
Capacitor
Capacitor
Capacitor
Capacitor
Resistor
Resistor
Type
Zarlink Semiconductor Inc.
100 mA
80.6 kΩ
90.9 kΩ
69.8 kΩ
40.2 kΩ
4.32 kΩ
2.87 kΩ
2.87 kΩ
0.82 µF
3.01 kΩ
6.04 kΩ
200 kΩ
750 kΩ
100 nF
100 nF
3.3 nF
Value
22 nF
22 nF
50 Ω
2 kΩ
1 kΩ
1 kΩ
1 A
20
10%
10%
10%
20%
20%
20%
Tol.
2%
2%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
5%
5%
-
-
-
-
-
Rating
1/10 W
1/10 W
1/10 W
1/10 W
100 V
100 V
100 V
1/4 W
1/8 W
1/8 W
1/8 W
1/8 W
1/8 W
1/8 W
100 V
100 V
100 V
100 V
10 V
10 V
2 W
1 W
2 W
2 W
Impedance control resistor
Receive path gain resistor
Current reference setting resistor
Feed/metering capacitor - Not Polarized
Feed/metering capacitor -Ceramic
Longitudinal loop current gain resistor
Ceramic
Protector speed up capacitor
codec
TECCOR Battrax protector
50 ns response time
Fusible or PTC protection resistors
Sense resistors
Battery sense resistors
Feed/metering resistor
Feed/metering resistor
Feed/metering resistor
Feed/metering resistor
Metallic loop current gain resistor
Test board
Ceramic
High pass filter capacitor - Ceramic
Thermal management resistor
Thermal management resistor
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