Datasheet

DS21Q58 E1 Quad Transceiver
50 of 74
Figure 21-3. External Analog Connections (Protected Interface)
RTIP1
RRING1
TTIP1
TRING1
1/4 DS21Q58
0.47mF
(NONPOLARIZED
)
DVDD
DVSS
0.1
m
F
RVDD
RVSS
0.1
m
F
+VDD
0.01mF
2.048MHz
MCLK
S
1:1
0.1mF
FUSE
FUSE
60 60
+VDD
C2
D5
D6
D7
D8
68
m
F
S
TRANSMI
T
LINE
FUSE
FUSE
0.1
m
F
+VDD
C1
D1
D2
D3
D4
TVDD
TVSS
2:1
RECEIVE
LINE
NOTE 1: ALL RESISTOR VALUES ARE ±1%.
NOTE 2: C1 = C2 = 0.1mF.
NOTE 3: S IS A 6V TRANSIENT SUPPRESSOR.
NOTE 4: D1 TO D8 ARE SCHOTTKY DIODES.
NOTE 5: THE FUSES ARE OPTIONAL TO PREVENT AC POWER LINE CROSSES FROM COMPROMISING THE TRANSFORMERS.
NOTE 6: THE 68mF IS USED TO KEEP THE LOCAL POWER PLANE POTENTIAL WITHIN TOLERANCE DURING A SURGE.