Altec Analog Socket Modem AL2094S - Manual (Page 22)

AL2094S Designers Guide
Doc. No. DG_2094E Altec Electronic AG Seite 22 / 30
F1
TS250-130
P1
RJ11
1
2
3
4
5
6
NC
OT
T
R
OR
NC
R2
0R
RV1
TVB270SC
P2
SOCKET MODEM
1
2
R1
0R
C1
1000PF
X2/Y3
L1
1
4
8
5
X2/Y3
C2
1000PF
Note: Meets ITU-T K.21 Surge Requirements
F IGURE 3-4. R ECOMMENDED T ELEPHONE L INE I NTERFACE FOR W ORLD CLASS SOCKET MODEM .
Table 3-7. DAA Part List
REF TYPE Manufacturer PART No
L1
Common Mode Coke
Epcos
Microspire
B82790-C0475-N265
ESC-X1-M47-1S
C1, C2
High Voltage Capacitor / MLCC
X2 / Y3 Types
Johansson
Novacap
Syfer
302R29W102KV3E
LS1808N102K302
1808JA250102KCT
F1
Fuse: U.S. Models
Europe
Models
Littlefuse
Raychem
F1250T
TS250-130
RV1
Thyristor Surge Protectors:
U.S. Models
Europe Models
Teccor
Raychem
P3100SC
TVB270SC
The common mode choke L1 is optional in both Figures 3.3 and 3.4 and it’s need depends on the
characteristics of the target hardware. The need for this choke must be evaluated at EMV
measurement (conducted emission) of the final product. If not used populate R1, R2.